root / target-i386 / cpu.c @ 09faecf2
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/*
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* i386 CPUID helper functions
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <inttypes.h> |
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#include "cpu.h" |
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#include "kvm.h" |
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#include "qemu-option.h" |
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#include "qemu-config.h" |
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#include "qapi/qapi-visit-core.h" |
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#include "hyperv.h" |
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/* feature flags taken from "Intel Processor Identification and the CPUID
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* Instruction" and AMD's "CPUID Specification". In cases of disagreement
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* between feature naming conventions, aliases may be added.
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*/
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static const char *feature_name[] = { |
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"fpu", "vme", "de", "pse", |
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"tsc", "msr", "pae", "mce", |
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"cx8", "apic", NULL, "sep", |
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"mtrr", "pge", "mca", "cmov", |
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"pat", "pse36", "pn" /* Intel psn */, "clflush" /* Intel clfsh */, |
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NULL, "ds" /* Intel dts */, "acpi", "mmx", |
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"fxsr", "sse", "sse2", "ss", |
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"ht" /* Intel htt */, "tm", "ia64", "pbe", |
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}; |
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static const char *ext_feature_name[] = { |
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"pni|sse3" /* Intel,AMD sse3 */, "pclmulqdq|pclmuldq", "dtes64", "monitor", |
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"ds_cpl", "vmx", "smx", "est", |
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"tm2", "ssse3", "cid", NULL, |
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"fma", "cx16", "xtpr", "pdcm", |
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NULL, NULL, "dca", "sse4.1|sse4_1", |
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"sse4.2|sse4_2", "x2apic", "movbe", "popcnt", |
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"tsc-deadline", "aes", "xsave", "osxsave", |
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"avx", NULL, NULL, "hypervisor", |
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}; |
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static const char *ext2_feature_name[] = { |
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"fpu", "vme", "de", "pse", |
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"tsc", "msr", "pae", "mce", |
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"cx8" /* AMD CMPXCHG8B */, "apic", NULL, "syscall", |
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"mtrr", "pge", "mca", "cmov", |
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"pat", "pse36", NULL, NULL /* Linux mp */, |
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"nx|xd", NULL, "mmxext", "mmx", |
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"fxsr", "fxsr_opt|ffxsr", "pdpe1gb" /* AMD Page1GB */, "rdtscp", |
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NULL, "lm|i64", "3dnowext", "3dnow", |
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}; |
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static const char *ext3_feature_name[] = { |
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"lahf_lm" /* AMD LahfSahf */, "cmp_legacy", "svm", "extapic" /* AMD ExtApicSpace */, |
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"cr8legacy" /* AMD AltMovCr8 */, "abm", "sse4a", "misalignsse", |
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"3dnowprefetch", "osvw", "ibs", "xop", |
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"skinit", "wdt", NULL, NULL, |
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"fma4", NULL, "cvt16", "nodeid_msr", |
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NULL, NULL, NULL, NULL, |
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NULL, NULL, NULL, NULL, |
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NULL, NULL, NULL, NULL, |
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}; |
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|
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static const char *kvm_feature_name[] = { |
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"kvmclock", "kvm_nopiodelay", "kvm_mmu", "kvmclock", "kvm_asyncpf", NULL, NULL, NULL, |
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
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}; |
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static const char *svm_feature_name[] = { |
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"npt", "lbrv", "svm_lock", "nrip_save", |
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"tsc_scale", "vmcb_clean", "flushbyasid", "decodeassists", |
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NULL, NULL, "pause_filter", NULL, |
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"pfthreshold", NULL, NULL, NULL, |
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NULL, NULL, NULL, NULL, |
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NULL, NULL, NULL, NULL, |
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NULL, NULL, NULL, NULL, |
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NULL, NULL, NULL, NULL, |
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}; |
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|
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/* collects per-function cpuid data
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*/
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typedef struct model_features_t { |
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uint32_t *guest_feat; |
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uint32_t *host_feat; |
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uint32_t check_feat; |
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const char **flag_names; |
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uint32_t cpuid; |
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} model_features_t; |
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int check_cpuid = 0; |
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int enforce_cpuid = 0; |
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void host_cpuid(uint32_t function, uint32_t count,
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uint32_t *eax, uint32_t *ebx, uint32_t *ecx, uint32_t *edx) |
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{
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#if defined(CONFIG_KVM)
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uint32_t vec[4];
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#ifdef __x86_64__
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asm volatile("cpuid" |
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: "=a"(vec[0]), "=b"(vec[1]), |
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"=c"(vec[2]), "=d"(vec[3]) |
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: "0"(function), "c"(count) : "cc"); |
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#else
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asm volatile("pusha \n\t" |
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"cpuid \n\t"
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"mov %%eax, 0(%2) \n\t"
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"mov %%ebx, 4(%2) \n\t"
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"mov %%ecx, 8(%2) \n\t"
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"mov %%edx, 12(%2) \n\t"
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"popa"
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: : "a"(function), "c"(count), "S"(vec) |
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: "memory", "cc"); |
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#endif
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if (eax)
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*eax = vec[0];
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if (ebx)
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*ebx = vec[1];
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if (ecx)
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*ecx = vec[2];
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if (edx)
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*edx = vec[3];
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#endif
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} |
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#define iswhite(c) ((c) && ((c) <= ' ' || '~' < (c))) |
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/* general substring compare of *[s1..e1) and *[s2..e2). sx is start of
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* a substring. ex if !NULL points to the first char after a substring,
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* otherwise the string is assumed to sized by a terminating nul.
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* Return lexical ordering of *s1:*s2.
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*/
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static int sstrcmp(const char *s1, const char *e1, const char *s2, |
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const char *e2) |
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{
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for (;;) {
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if (!*s1 || !*s2 || *s1 != *s2)
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return (*s1 - *s2);
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++s1, ++s2; |
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if (s1 == e1 && s2 == e2)
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return (0); |
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else if (s1 == e1) |
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return (*s2);
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else if (s2 == e2) |
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return (*s1);
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} |
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} |
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/* compare *[s..e) to *altstr. *altstr may be a simple string or multiple
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* '|' delimited (possibly empty) strings in which case search for a match
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* within the alternatives proceeds left to right. Return 0 for success,
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* non-zero otherwise.
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*/
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static int altcmp(const char *s, const char *e, const char *altstr) |
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{
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const char *p, *q; |
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for (q = p = altstr; ; ) {
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while (*p && *p != '|') |
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++p; |
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if ((q == p && !*s) || (q != p && !sstrcmp(s, e, q, p)))
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return (0); |
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if (!*p)
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return (1); |
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else
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q = ++p; |
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} |
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} |
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/* search featureset for flag *[s..e), if found set corresponding bit in
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* *pval and return true, otherwise return false
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*/
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static bool lookup_feature(uint32_t *pval, const char *s, const char *e, |
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const char **featureset) |
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{
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uint32_t mask; |
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const char **ppc; |
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bool found = false; |
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for (mask = 1, ppc = featureset; mask; mask <<= 1, ++ppc) { |
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if (*ppc && !altcmp(s, e, *ppc)) {
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*pval |= mask; |
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found = true;
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} |
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} |
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return found;
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} |
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static void add_flagname_to_bitmaps(const char *flagname, uint32_t *features, |
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uint32_t *ext_features, |
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uint32_t *ext2_features, |
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uint32_t *ext3_features, |
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uint32_t *kvm_features, |
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uint32_t *svm_features) |
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{
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if (!lookup_feature(features, flagname, NULL, feature_name) && |
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!lookup_feature(ext_features, flagname, NULL, ext_feature_name) &&
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!lookup_feature(ext2_features, flagname, NULL, ext2_feature_name) &&
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!lookup_feature(ext3_features, flagname, NULL, ext3_feature_name) &&
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!lookup_feature(kvm_features, flagname, NULL, kvm_feature_name) &&
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!lookup_feature(svm_features, flagname, NULL, svm_feature_name))
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fprintf(stderr, "CPU feature %s not found\n", flagname);
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} |
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|
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typedef struct x86_def_t { |
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struct x86_def_t *next;
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const char *name; |
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uint32_t level; |
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uint32_t vendor1, vendor2, vendor3; |
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int family;
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int model;
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int stepping;
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int tsc_khz;
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uint32_t features, ext_features, ext2_features, ext3_features; |
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uint32_t kvm_features, svm_features; |
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uint32_t xlevel; |
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char model_id[48]; |
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int vendor_override;
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uint32_t flags; |
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/* Store the results of Centaur's CPUID instructions */
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uint32_t ext4_features; |
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uint32_t xlevel2; |
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/* The feature bits on CPUID[EAX=7,ECX=0].EBX */
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uint32_t cpuid_7_0_ebx_features; |
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} x86_def_t; |
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|
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#define I486_FEATURES (CPUID_FP87 | CPUID_VME | CPUID_PSE)
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#define PENTIUM_FEATURES (I486_FEATURES | CPUID_DE | CPUID_TSC | \
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CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_MMX | CPUID_APIC) |
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#define PENTIUM2_FEATURES (PENTIUM_FEATURES | CPUID_PAE | CPUID_SEP | \
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CPUID_MTRR | CPUID_PGE | CPUID_MCA | CPUID_CMOV | CPUID_PAT | \ |
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CPUID_PSE36 | CPUID_FXSR) |
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#define PENTIUM3_FEATURES (PENTIUM2_FEATURES | CPUID_SSE)
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#define PPRO_FEATURES (CPUID_FP87 | CPUID_DE | CPUID_PSE | CPUID_TSC | \
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CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_PGE | CPUID_CMOV | \ |
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CPUID_PAT | CPUID_FXSR | CPUID_MMX | CPUID_SSE | CPUID_SSE2 | \ |
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CPUID_PAE | CPUID_SEP | CPUID_APIC) |
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#define EXT2_FEATURE_MASK 0x0183F3FF |
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|
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#define TCG_FEATURES (CPUID_FP87 | CPUID_PSE | CPUID_TSC | CPUID_MSR | \
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CPUID_PAE | CPUID_MCE | CPUID_CX8 | CPUID_APIC | CPUID_SEP | \ |
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CPUID_MTRR | CPUID_PGE | CPUID_MCA | CPUID_CMOV | CPUID_PAT | \ |
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CPUID_PSE36 | CPUID_CLFLUSH | CPUID_ACPI | CPUID_MMX | \ |
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CPUID_FXSR | CPUID_SSE | CPUID_SSE2 | CPUID_SS) |
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/* partly implemented:
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CPUID_MTRR, CPUID_MCA, CPUID_CLFLUSH (needed for Win64)
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CPUID_PSE36 (needed for Solaris) */
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/* missing:
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CPUID_VME, CPUID_DTS, CPUID_SS, CPUID_HT, CPUID_TM, CPUID_PBE */
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#define TCG_EXT_FEATURES (CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | \
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CPUID_EXT_CX16 | CPUID_EXT_POPCNT | \ |
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CPUID_EXT_HYPERVISOR) |
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/* missing:
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CPUID_EXT_DTES64, CPUID_EXT_DSCPL, CPUID_EXT_VMX, CPUID_EXT_EST,
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CPUID_EXT_TM2, CPUID_EXT_XTPR, CPUID_EXT_PDCM, CPUID_EXT_XSAVE */
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#define TCG_EXT2_FEATURES ((TCG_FEATURES & EXT2_FEATURE_MASK) | \
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CPUID_EXT2_NX | CPUID_EXT2_MMXEXT | CPUID_EXT2_RDTSCP | \ |
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CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT) |
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/* missing:
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CPUID_EXT2_PDPE1GB */
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#define TCG_EXT3_FEATURES (CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM | \
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CPUID_EXT3_CR8LEG | CPUID_EXT3_ABM | CPUID_EXT3_SSE4A) |
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#define TCG_SVM_FEATURES 0 |
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|
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/* maintains list of cpu model definitions
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*/
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static x86_def_t *x86_defs = {NULL}; |
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|
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/* built-in cpu model definitions (deprecated)
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*/
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static x86_def_t builtin_x86_defs[] = {
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{
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.name = "qemu64",
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.level = 4,
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.vendor1 = CPUID_VENDOR_AMD_1, |
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.vendor2 = CPUID_VENDOR_AMD_2, |
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.vendor3 = CPUID_VENDOR_AMD_3, |
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.family = 6,
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.model = 2,
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.stepping = 3,
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.features = PPRO_FEATURES | |
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CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | |
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CPUID_PSE36, |
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.ext_features = CPUID_EXT_SSE3 | CPUID_EXT_CX16 | CPUID_EXT_POPCNT, |
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.ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) | |
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CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX, |
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.ext3_features = CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM | |
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CPUID_EXT3_ABM | CPUID_EXT3_SSE4A, |
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.xlevel = 0x8000000A,
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}, |
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{
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.name = "phenom",
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.level = 5,
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.vendor1 = CPUID_VENDOR_AMD_1, |
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.vendor2 = CPUID_VENDOR_AMD_2, |
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.vendor3 = CPUID_VENDOR_AMD_3, |
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.family = 16,
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.model = 2,
|
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.stepping = 3,
|
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.features = PPRO_FEATURES | |
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CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | |
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CPUID_PSE36 | CPUID_VME | CPUID_HT, |
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.ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_CX16 | |
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CPUID_EXT_POPCNT, |
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.ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) | |
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CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX | |
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CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT | CPUID_EXT2_MMXEXT | |
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CPUID_EXT2_FFXSR | CPUID_EXT2_PDPE1GB | CPUID_EXT2_RDTSCP, |
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/* Missing: CPUID_EXT3_CMP_LEG, CPUID_EXT3_EXTAPIC,
|
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CPUID_EXT3_CR8LEG,
|
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CPUID_EXT3_MISALIGNSSE, CPUID_EXT3_3DNOWPREFETCH,
|
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CPUID_EXT3_OSVW, CPUID_EXT3_IBS */
|
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.ext3_features = CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM | |
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CPUID_EXT3_ABM | CPUID_EXT3_SSE4A, |
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.svm_features = CPUID_SVM_NPT | CPUID_SVM_LBRV, |
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.xlevel = 0x8000001A,
|
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.model_id = "AMD Phenom(tm) 9550 Quad-Core Processor"
|
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}, |
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{
|
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.name = "core2duo",
|
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.level = 10,
|
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.family = 6,
|
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.model = 15,
|
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.stepping = 11,
|
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.features = PPRO_FEATURES | |
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CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | |
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CPUID_PSE36 | CPUID_VME | CPUID_DTS | CPUID_ACPI | CPUID_SS | |
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CPUID_HT | CPUID_TM | CPUID_PBE, |
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.ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_SSSE3 | |
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CPUID_EXT_DTES64 | CPUID_EXT_DSCPL | CPUID_EXT_VMX | CPUID_EXT_EST | |
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CPUID_EXT_TM2 | CPUID_EXT_CX16 | CPUID_EXT_XTPR | CPUID_EXT_PDCM, |
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.ext2_features = CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX, |
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.ext3_features = CPUID_EXT3_LAHF_LM, |
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.xlevel = 0x80000008,
|
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.model_id = "Intel(R) Core(TM)2 Duo CPU T7700 @ 2.40GHz",
|
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}, |
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{
|
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.name = "kvm64",
|
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.level = 5,
|
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.vendor1 = CPUID_VENDOR_INTEL_1, |
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.vendor2 = CPUID_VENDOR_INTEL_2, |
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.vendor3 = CPUID_VENDOR_INTEL_3, |
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.family = 15,
|
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.model = 6,
|
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.stepping = 1,
|
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/* Missing: CPUID_VME, CPUID_HT */
|
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.features = PPRO_FEATURES | |
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CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | |
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CPUID_PSE36, |
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/* Missing: CPUID_EXT_POPCNT, CPUID_EXT_MONITOR */
|
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.ext_features = CPUID_EXT_SSE3 | CPUID_EXT_CX16, |
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/* Missing: CPUID_EXT2_PDPE1GB, CPUID_EXT2_RDTSCP */
|
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.ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) | |
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CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX, |
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/* Missing: CPUID_EXT3_LAHF_LM, CPUID_EXT3_CMP_LEG, CPUID_EXT3_EXTAPIC,
|
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CPUID_EXT3_CR8LEG, CPUID_EXT3_ABM, CPUID_EXT3_SSE4A,
|
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CPUID_EXT3_MISALIGNSSE, CPUID_EXT3_3DNOWPREFETCH,
|
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CPUID_EXT3_OSVW, CPUID_EXT3_IBS, CPUID_EXT3_SVM */
|
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.ext3_features = 0,
|
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.xlevel = 0x80000008,
|
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.model_id = "Common KVM processor"
|
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}, |
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{
|
| 382 |
.name = "qemu32",
|
| 383 |
.level = 4,
|
| 384 |
.family = 6,
|
| 385 |
.model = 3,
|
| 386 |
.stepping = 3,
|
| 387 |
.features = PPRO_FEATURES, |
| 388 |
.ext_features = CPUID_EXT_SSE3 | CPUID_EXT_POPCNT, |
| 389 |
.xlevel = 0x80000004,
|
| 390 |
}, |
| 391 |
{
|
| 392 |
.name = "kvm32",
|
| 393 |
.level = 5,
|
| 394 |
.family = 15,
|
| 395 |
.model = 6,
|
| 396 |
.stepping = 1,
|
| 397 |
.features = PPRO_FEATURES | |
| 398 |
CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_PSE36, |
| 399 |
.ext_features = CPUID_EXT_SSE3, |
| 400 |
.ext2_features = PPRO_FEATURES & EXT2_FEATURE_MASK, |
| 401 |
.ext3_features = 0,
|
| 402 |
.xlevel = 0x80000008,
|
| 403 |
.model_id = "Common 32-bit KVM processor"
|
| 404 |
}, |
| 405 |
{
|
| 406 |
.name = "coreduo",
|
| 407 |
.level = 10,
|
| 408 |
.family = 6,
|
| 409 |
.model = 14,
|
| 410 |
.stepping = 8,
|
| 411 |
.features = PPRO_FEATURES | CPUID_VME | |
| 412 |
CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_DTS | CPUID_ACPI | |
| 413 |
CPUID_SS | CPUID_HT | CPUID_TM | CPUID_PBE, |
| 414 |
.ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_VMX | |
| 415 |
CPUID_EXT_EST | CPUID_EXT_TM2 | CPUID_EXT_XTPR | CPUID_EXT_PDCM, |
| 416 |
.ext2_features = CPUID_EXT2_NX, |
| 417 |
.xlevel = 0x80000008,
|
| 418 |
.model_id = "Genuine Intel(R) CPU T2600 @ 2.16GHz",
|
| 419 |
}, |
| 420 |
{
|
| 421 |
.name = "486",
|
| 422 |
.level = 1,
|
| 423 |
.family = 4,
|
| 424 |
.model = 0,
|
| 425 |
.stepping = 0,
|
| 426 |
.features = I486_FEATURES, |
| 427 |
.xlevel = 0,
|
| 428 |
}, |
| 429 |
{
|
| 430 |
.name = "pentium",
|
| 431 |
.level = 1,
|
| 432 |
.family = 5,
|
| 433 |
.model = 4,
|
| 434 |
.stepping = 3,
|
| 435 |
.features = PENTIUM_FEATURES, |
| 436 |
.xlevel = 0,
|
| 437 |
}, |
| 438 |
{
|
| 439 |
.name = "pentium2",
|
| 440 |
.level = 2,
|
| 441 |
.family = 6,
|
| 442 |
.model = 5,
|
| 443 |
.stepping = 2,
|
| 444 |
.features = PENTIUM2_FEATURES, |
| 445 |
.xlevel = 0,
|
| 446 |
}, |
| 447 |
{
|
| 448 |
.name = "pentium3",
|
| 449 |
.level = 2,
|
| 450 |
.family = 6,
|
| 451 |
.model = 7,
|
| 452 |
.stepping = 3,
|
| 453 |
.features = PENTIUM3_FEATURES, |
| 454 |
.xlevel = 0,
|
| 455 |
}, |
| 456 |
{
|
| 457 |
.name = "athlon",
|
| 458 |
.level = 2,
|
| 459 |
.vendor1 = CPUID_VENDOR_AMD_1, |
| 460 |
.vendor2 = CPUID_VENDOR_AMD_2, |
| 461 |
.vendor3 = CPUID_VENDOR_AMD_3, |
| 462 |
.family = 6,
|
| 463 |
.model = 2,
|
| 464 |
.stepping = 3,
|
| 465 |
.features = PPRO_FEATURES | CPUID_PSE36 | CPUID_VME | CPUID_MTRR | CPUID_MCA, |
| 466 |
.ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) | CPUID_EXT2_MMXEXT | CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT, |
| 467 |
.xlevel = 0x80000008,
|
| 468 |
}, |
| 469 |
{
|
| 470 |
.name = "n270",
|
| 471 |
/* original is on level 10 */
|
| 472 |
.level = 5,
|
| 473 |
.family = 6,
|
| 474 |
.model = 28,
|
| 475 |
.stepping = 2,
|
| 476 |
.features = PPRO_FEATURES | |
| 477 |
CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_VME | CPUID_DTS | |
| 478 |
CPUID_ACPI | CPUID_SS | CPUID_HT | CPUID_TM | CPUID_PBE, |
| 479 |
/* Some CPUs got no CPUID_SEP */
|
| 480 |
.ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_SSSE3 | |
| 481 |
CPUID_EXT_DSCPL | CPUID_EXT_EST | CPUID_EXT_TM2 | CPUID_EXT_XTPR, |
| 482 |
.ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) | CPUID_EXT2_NX, |
| 483 |
.ext3_features = CPUID_EXT3_LAHF_LM, |
| 484 |
.xlevel = 0x8000000A,
|
| 485 |
.model_id = "Intel(R) Atom(TM) CPU N270 @ 1.60GHz",
|
| 486 |
}, |
| 487 |
}; |
| 488 |
|
| 489 |
static int cpu_x86_fill_model_id(char *str) |
| 490 |
{
|
| 491 |
uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0; |
| 492 |
int i;
|
| 493 |
|
| 494 |
for (i = 0; i < 3; i++) { |
| 495 |
host_cpuid(0x80000002 + i, 0, &eax, &ebx, &ecx, &edx); |
| 496 |
memcpy(str + i * 16 + 0, &eax, 4); |
| 497 |
memcpy(str + i * 16 + 4, &ebx, 4); |
| 498 |
memcpy(str + i * 16 + 8, &ecx, 4); |
| 499 |
memcpy(str + i * 16 + 12, &edx, 4); |
| 500 |
} |
| 501 |
return 0; |
| 502 |
} |
| 503 |
|
| 504 |
static int cpu_x86_fill_host(x86_def_t *x86_cpu_def) |
| 505 |
{
|
| 506 |
uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0; |
| 507 |
|
| 508 |
x86_cpu_def->name = "host";
|
| 509 |
host_cpuid(0x0, 0, &eax, &ebx, &ecx, &edx); |
| 510 |
x86_cpu_def->level = eax; |
| 511 |
x86_cpu_def->vendor1 = ebx; |
| 512 |
x86_cpu_def->vendor2 = edx; |
| 513 |
x86_cpu_def->vendor3 = ecx; |
| 514 |
|
| 515 |
host_cpuid(0x1, 0, &eax, &ebx, &ecx, &edx); |
| 516 |
x86_cpu_def->family = ((eax >> 8) & 0x0F) + ((eax >> 20) & 0xFF); |
| 517 |
x86_cpu_def->model = ((eax >> 4) & 0x0F) | ((eax & 0xF0000) >> 12); |
| 518 |
x86_cpu_def->stepping = eax & 0x0F;
|
| 519 |
x86_cpu_def->ext_features = ecx; |
| 520 |
x86_cpu_def->features = edx; |
| 521 |
|
| 522 |
if (kvm_enabled() && x86_cpu_def->level >= 7) { |
| 523 |
x86_cpu_def->cpuid_7_0_ebx_features = kvm_arch_get_supported_cpuid(kvm_state, 0x7, 0, R_EBX); |
| 524 |
} else {
|
| 525 |
x86_cpu_def->cpuid_7_0_ebx_features = 0;
|
| 526 |
} |
| 527 |
|
| 528 |
host_cpuid(0x80000000, 0, &eax, &ebx, &ecx, &edx); |
| 529 |
x86_cpu_def->xlevel = eax; |
| 530 |
|
| 531 |
host_cpuid(0x80000001, 0, &eax, &ebx, &ecx, &edx); |
| 532 |
x86_cpu_def->ext2_features = edx; |
| 533 |
x86_cpu_def->ext3_features = ecx; |
| 534 |
cpu_x86_fill_model_id(x86_cpu_def->model_id); |
| 535 |
x86_cpu_def->vendor_override = 0;
|
| 536 |
|
| 537 |
/* Call Centaur's CPUID instruction. */
|
| 538 |
if (x86_cpu_def->vendor1 == CPUID_VENDOR_VIA_1 &&
|
| 539 |
x86_cpu_def->vendor2 == CPUID_VENDOR_VIA_2 && |
| 540 |
x86_cpu_def->vendor3 == CPUID_VENDOR_VIA_3) {
|
| 541 |
host_cpuid(0xC0000000, 0, &eax, &ebx, &ecx, &edx); |
| 542 |
if (eax >= 0xC0000001) { |
| 543 |
/* Support VIA max extended level */
|
| 544 |
x86_cpu_def->xlevel2 = eax; |
| 545 |
host_cpuid(0xC0000001, 0, &eax, &ebx, &ecx, &edx); |
| 546 |
x86_cpu_def->ext4_features = edx; |
| 547 |
} |
| 548 |
} |
| 549 |
|
| 550 |
/*
|
| 551 |
* Every SVM feature requires emulation support in KVM - so we can't just
|
| 552 |
* read the host features here. KVM might even support SVM features not
|
| 553 |
* available on the host hardware. Just set all bits and mask out the
|
| 554 |
* unsupported ones later.
|
| 555 |
*/
|
| 556 |
x86_cpu_def->svm_features = -1;
|
| 557 |
|
| 558 |
return 0; |
| 559 |
} |
| 560 |
|
| 561 |
static int unavailable_host_feature(struct model_features_t *f, uint32_t mask) |
| 562 |
{
|
| 563 |
int i;
|
| 564 |
|
| 565 |
for (i = 0; i < 32; ++i) |
| 566 |
if (1 << i & mask) { |
| 567 |
fprintf(stderr, "warning: host cpuid %04x_%04x lacks requested"
|
| 568 |
" flag '%s' [0x%08x]\n",
|
| 569 |
f->cpuid >> 16, f->cpuid & 0xffff, |
| 570 |
f->flag_names[i] ? f->flag_names[i] : "[reserved]", mask);
|
| 571 |
break;
|
| 572 |
} |
| 573 |
return 0; |
| 574 |
} |
| 575 |
|
| 576 |
/* best effort attempt to inform user requested cpu flags aren't making
|
| 577 |
* their way to the guest. Note: ft[].check_feat ideally should be
|
| 578 |
* specified via a guest_def field to suppress report of extraneous flags.
|
| 579 |
*/
|
| 580 |
static int check_features_against_host(x86_def_t *guest_def) |
| 581 |
{
|
| 582 |
x86_def_t host_def; |
| 583 |
uint32_t mask; |
| 584 |
int rv, i;
|
| 585 |
struct model_features_t ft[] = {
|
| 586 |
{&guest_def->features, &host_def.features,
|
| 587 |
~0, feature_name, 0x00000000}, |
| 588 |
{&guest_def->ext_features, &host_def.ext_features,
|
| 589 |
~CPUID_EXT_HYPERVISOR, ext_feature_name, 0x00000001},
|
| 590 |
{&guest_def->ext2_features, &host_def.ext2_features,
|
| 591 |
~PPRO_FEATURES, ext2_feature_name, 0x80000000},
|
| 592 |
{&guest_def->ext3_features, &host_def.ext3_features,
|
| 593 |
~CPUID_EXT3_SVM, ext3_feature_name, 0x80000001}};
|
| 594 |
|
| 595 |
cpu_x86_fill_host(&host_def); |
| 596 |
for (rv = 0, i = 0; i < ARRAY_SIZE(ft); ++i) |
| 597 |
for (mask = 1; mask; mask <<= 1) |
| 598 |
if (ft[i].check_feat & mask && *ft[i].guest_feat & mask &&
|
| 599 |
!(*ft[i].host_feat & mask)) {
|
| 600 |
unavailable_host_feature(&ft[i], mask); |
| 601 |
rv = 1;
|
| 602 |
} |
| 603 |
return rv;
|
| 604 |
} |
| 605 |
|
| 606 |
static void x86_cpuid_version_get_family(Object *obj, Visitor *v, void *opaque, |
| 607 |
const char *name, Error **errp) |
| 608 |
{
|
| 609 |
X86CPU *cpu = X86_CPU(obj); |
| 610 |
CPUX86State *env = &cpu->env; |
| 611 |
int64_t value; |
| 612 |
|
| 613 |
value = (env->cpuid_version >> 8) & 0xf; |
| 614 |
if (value == 0xf) { |
| 615 |
value += (env->cpuid_version >> 20) & 0xff; |
| 616 |
} |
| 617 |
visit_type_int(v, &value, name, errp); |
| 618 |
} |
| 619 |
|
| 620 |
static void x86_cpuid_version_set_family(Object *obj, Visitor *v, void *opaque, |
| 621 |
const char *name, Error **errp) |
| 622 |
{
|
| 623 |
X86CPU *cpu = X86_CPU(obj); |
| 624 |
CPUX86State *env = &cpu->env; |
| 625 |
const int64_t min = 0; |
| 626 |
const int64_t max = 0xff + 0xf; |
| 627 |
int64_t value; |
| 628 |
|
| 629 |
visit_type_int(v, &value, name, errp); |
| 630 |
if (error_is_set(errp)) {
|
| 631 |
return;
|
| 632 |
} |
| 633 |
if (value < min || value > max) {
|
| 634 |
error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
|
| 635 |
name ? name : "null", value, min, max);
|
| 636 |
return;
|
| 637 |
} |
| 638 |
|
| 639 |
env->cpuid_version &= ~0xff00f00;
|
| 640 |
if (value > 0x0f) { |
| 641 |
env->cpuid_version |= 0xf00 | ((value - 0x0f) << 20); |
| 642 |
} else {
|
| 643 |
env->cpuid_version |= value << 8;
|
| 644 |
} |
| 645 |
} |
| 646 |
|
| 647 |
static void x86_cpuid_version_get_model(Object *obj, Visitor *v, void *opaque, |
| 648 |
const char *name, Error **errp) |
| 649 |
{
|
| 650 |
X86CPU *cpu = X86_CPU(obj); |
| 651 |
CPUX86State *env = &cpu->env; |
| 652 |
int64_t value; |
| 653 |
|
| 654 |
value = (env->cpuid_version >> 4) & 0xf; |
| 655 |
value |= ((env->cpuid_version >> 16) & 0xf) << 4; |
| 656 |
visit_type_int(v, &value, name, errp); |
| 657 |
} |
| 658 |
|
| 659 |
static void x86_cpuid_version_set_model(Object *obj, Visitor *v, void *opaque, |
| 660 |
const char *name, Error **errp) |
| 661 |
{
|
| 662 |
X86CPU *cpu = X86_CPU(obj); |
| 663 |
CPUX86State *env = &cpu->env; |
| 664 |
const int64_t min = 0; |
| 665 |
const int64_t max = 0xff; |
| 666 |
int64_t value; |
| 667 |
|
| 668 |
visit_type_int(v, &value, name, errp); |
| 669 |
if (error_is_set(errp)) {
|
| 670 |
return;
|
| 671 |
} |
| 672 |
if (value < min || value > max) {
|
| 673 |
error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
|
| 674 |
name ? name : "null", value, min, max);
|
| 675 |
return;
|
| 676 |
} |
| 677 |
|
| 678 |
env->cpuid_version &= ~0xf00f0;
|
| 679 |
env->cpuid_version |= ((value & 0xf) << 4) | ((value >> 4) << 16); |
| 680 |
} |
| 681 |
|
| 682 |
static void x86_cpuid_version_get_stepping(Object *obj, Visitor *v, |
| 683 |
void *opaque, const char *name, |
| 684 |
Error **errp) |
| 685 |
{
|
| 686 |
X86CPU *cpu = X86_CPU(obj); |
| 687 |
CPUX86State *env = &cpu->env; |
| 688 |
int64_t value; |
| 689 |
|
| 690 |
value = env->cpuid_version & 0xf;
|
| 691 |
visit_type_int(v, &value, name, errp); |
| 692 |
} |
| 693 |
|
| 694 |
static void x86_cpuid_version_set_stepping(Object *obj, Visitor *v, |
| 695 |
void *opaque, const char *name, |
| 696 |
Error **errp) |
| 697 |
{
|
| 698 |
X86CPU *cpu = X86_CPU(obj); |
| 699 |
CPUX86State *env = &cpu->env; |
| 700 |
const int64_t min = 0; |
| 701 |
const int64_t max = 0xf; |
| 702 |
int64_t value; |
| 703 |
|
| 704 |
visit_type_int(v, &value, name, errp); |
| 705 |
if (error_is_set(errp)) {
|
| 706 |
return;
|
| 707 |
} |
| 708 |
if (value < min || value > max) {
|
| 709 |
error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
|
| 710 |
name ? name : "null", value, min, max);
|
| 711 |
return;
|
| 712 |
} |
| 713 |
|
| 714 |
env->cpuid_version &= ~0xf;
|
| 715 |
env->cpuid_version |= value & 0xf;
|
| 716 |
} |
| 717 |
|
| 718 |
static void x86_cpuid_get_level(Object *obj, Visitor *v, void *opaque, |
| 719 |
const char *name, Error **errp) |
| 720 |
{
|
| 721 |
X86CPU *cpu = X86_CPU(obj); |
| 722 |
|
| 723 |
visit_type_uint32(v, &cpu->env.cpuid_level, name, errp); |
| 724 |
} |
| 725 |
|
| 726 |
static void x86_cpuid_set_level(Object *obj, Visitor *v, void *opaque, |
| 727 |
const char *name, Error **errp) |
| 728 |
{
|
| 729 |
X86CPU *cpu = X86_CPU(obj); |
| 730 |
|
| 731 |
visit_type_uint32(v, &cpu->env.cpuid_level, name, errp); |
| 732 |
} |
| 733 |
|
| 734 |
static void x86_cpuid_get_xlevel(Object *obj, Visitor *v, void *opaque, |
| 735 |
const char *name, Error **errp) |
| 736 |
{
|
| 737 |
X86CPU *cpu = X86_CPU(obj); |
| 738 |
|
| 739 |
visit_type_uint32(v, &cpu->env.cpuid_xlevel, name, errp); |
| 740 |
} |
| 741 |
|
| 742 |
static void x86_cpuid_set_xlevel(Object *obj, Visitor *v, void *opaque, |
| 743 |
const char *name, Error **errp) |
| 744 |
{
|
| 745 |
X86CPU *cpu = X86_CPU(obj); |
| 746 |
|
| 747 |
visit_type_uint32(v, &cpu->env.cpuid_xlevel, name, errp); |
| 748 |
} |
| 749 |
|
| 750 |
static char *x86_cpuid_get_vendor(Object *obj, Error **errp) |
| 751 |
{
|
| 752 |
X86CPU *cpu = X86_CPU(obj); |
| 753 |
CPUX86State *env = &cpu->env; |
| 754 |
char *value;
|
| 755 |
int i;
|
| 756 |
|
| 757 |
value = (char *)g_malloc(12 + 1); |
| 758 |
for (i = 0; i < 4; i++) { |
| 759 |
value[i ] = env->cpuid_vendor1 >> (8 * i);
|
| 760 |
value[i + 4] = env->cpuid_vendor2 >> (8 * i); |
| 761 |
value[i + 8] = env->cpuid_vendor3 >> (8 * i); |
| 762 |
} |
| 763 |
value[12] = '\0'; |
| 764 |
return value;
|
| 765 |
} |
| 766 |
|
| 767 |
static void x86_cpuid_set_vendor(Object *obj, const char *value, |
| 768 |
Error **errp) |
| 769 |
{
|
| 770 |
X86CPU *cpu = X86_CPU(obj); |
| 771 |
CPUX86State *env = &cpu->env; |
| 772 |
int i;
|
| 773 |
|
| 774 |
if (strlen(value) != 12) { |
| 775 |
error_set(errp, QERR_PROPERTY_VALUE_BAD, "",
|
| 776 |
"vendor", value);
|
| 777 |
return;
|
| 778 |
} |
| 779 |
|
| 780 |
env->cpuid_vendor1 = 0;
|
| 781 |
env->cpuid_vendor2 = 0;
|
| 782 |
env->cpuid_vendor3 = 0;
|
| 783 |
for (i = 0; i < 4; i++) { |
| 784 |
env->cpuid_vendor1 |= ((uint8_t)value[i ]) << (8 * i);
|
| 785 |
env->cpuid_vendor2 |= ((uint8_t)value[i + 4]) << (8 * i); |
| 786 |
env->cpuid_vendor3 |= ((uint8_t)value[i + 8]) << (8 * i); |
| 787 |
} |
| 788 |
env->cpuid_vendor_override = 1;
|
| 789 |
} |
| 790 |
|
| 791 |
static char *x86_cpuid_get_model_id(Object *obj, Error **errp) |
| 792 |
{
|
| 793 |
X86CPU *cpu = X86_CPU(obj); |
| 794 |
CPUX86State *env = &cpu->env; |
| 795 |
char *value;
|
| 796 |
int i;
|
| 797 |
|
| 798 |
value = g_malloc(48 + 1); |
| 799 |
for (i = 0; i < 48; i++) { |
| 800 |
value[i] = env->cpuid_model[i >> 2] >> (8 * (i & 3)); |
| 801 |
} |
| 802 |
value[48] = '\0'; |
| 803 |
return value;
|
| 804 |
} |
| 805 |
|
| 806 |
static void x86_cpuid_set_model_id(Object *obj, const char *model_id, |
| 807 |
Error **errp) |
| 808 |
{
|
| 809 |
X86CPU *cpu = X86_CPU(obj); |
| 810 |
CPUX86State *env = &cpu->env; |
| 811 |
int c, len, i;
|
| 812 |
|
| 813 |
if (model_id == NULL) { |
| 814 |
model_id = "";
|
| 815 |
} |
| 816 |
len = strlen(model_id); |
| 817 |
memset(env->cpuid_model, 0, 48); |
| 818 |
for (i = 0; i < 48; i++) { |
| 819 |
if (i >= len) {
|
| 820 |
c = '\0';
|
| 821 |
} else {
|
| 822 |
c = (uint8_t)model_id[i]; |
| 823 |
} |
| 824 |
env->cpuid_model[i >> 2] |= c << (8 * (i & 3)); |
| 825 |
} |
| 826 |
} |
| 827 |
|
| 828 |
static void x86_cpuid_get_tsc_freq(Object *obj, Visitor *v, void *opaque, |
| 829 |
const char *name, Error **errp) |
| 830 |
{
|
| 831 |
X86CPU *cpu = X86_CPU(obj); |
| 832 |
int64_t value; |
| 833 |
|
| 834 |
value = cpu->env.tsc_khz * 1000;
|
| 835 |
visit_type_int(v, &value, name, errp); |
| 836 |
} |
| 837 |
|
| 838 |
static void x86_cpuid_set_tsc_freq(Object *obj, Visitor *v, void *opaque, |
| 839 |
const char *name, Error **errp) |
| 840 |
{
|
| 841 |
X86CPU *cpu = X86_CPU(obj); |
| 842 |
const int64_t min = 0; |
| 843 |
const int64_t max = INT_MAX;
|
| 844 |
int64_t value; |
| 845 |
|
| 846 |
visit_type_int(v, &value, name, errp); |
| 847 |
if (error_is_set(errp)) {
|
| 848 |
return;
|
| 849 |
} |
| 850 |
if (value < min || value > max) {
|
| 851 |
error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
|
| 852 |
name ? name : "null", value, min, max);
|
| 853 |
return;
|
| 854 |
} |
| 855 |
|
| 856 |
cpu->env.tsc_khz = value / 1000;
|
| 857 |
} |
| 858 |
|
| 859 |
static int cpu_x86_find_by_name(x86_def_t *x86_cpu_def, const char *cpu_model) |
| 860 |
{
|
| 861 |
unsigned int i; |
| 862 |
x86_def_t *def; |
| 863 |
|
| 864 |
char *s = g_strdup(cpu_model);
|
| 865 |
char *featurestr, *name = strtok(s, ","); |
| 866 |
/* Features to be added*/
|
| 867 |
uint32_t plus_features = 0, plus_ext_features = 0; |
| 868 |
uint32_t plus_ext2_features = 0, plus_ext3_features = 0; |
| 869 |
uint32_t plus_kvm_features = 0, plus_svm_features = 0; |
| 870 |
/* Features to be removed */
|
| 871 |
uint32_t minus_features = 0, minus_ext_features = 0; |
| 872 |
uint32_t minus_ext2_features = 0, minus_ext3_features = 0; |
| 873 |
uint32_t minus_kvm_features = 0, minus_svm_features = 0; |
| 874 |
uint32_t numvalue; |
| 875 |
|
| 876 |
for (def = x86_defs; def; def = def->next)
|
| 877 |
if (name && !strcmp(name, def->name))
|
| 878 |
break;
|
| 879 |
if (kvm_enabled() && name && strcmp(name, "host") == 0) { |
| 880 |
cpu_x86_fill_host(x86_cpu_def); |
| 881 |
} else if (!def) { |
| 882 |
goto error;
|
| 883 |
} else {
|
| 884 |
memcpy(x86_cpu_def, def, sizeof(*def));
|
| 885 |
} |
| 886 |
|
| 887 |
plus_kvm_features = ~0; /* not supported bits will be filtered out later */ |
| 888 |
|
| 889 |
add_flagname_to_bitmaps("hypervisor", &plus_features,
|
| 890 |
&plus_ext_features, &plus_ext2_features, &plus_ext3_features, |
| 891 |
&plus_kvm_features, &plus_svm_features); |
| 892 |
|
| 893 |
featurestr = strtok(NULL, ","); |
| 894 |
|
| 895 |
while (featurestr) {
|
| 896 |
char *val;
|
| 897 |
if (featurestr[0] == '+') { |
| 898 |
add_flagname_to_bitmaps(featurestr + 1, &plus_features,
|
| 899 |
&plus_ext_features, &plus_ext2_features, |
| 900 |
&plus_ext3_features, &plus_kvm_features, |
| 901 |
&plus_svm_features); |
| 902 |
} else if (featurestr[0] == '-') { |
| 903 |
add_flagname_to_bitmaps(featurestr + 1, &minus_features,
|
| 904 |
&minus_ext_features, &minus_ext2_features, |
| 905 |
&minus_ext3_features, &minus_kvm_features, |
| 906 |
&minus_svm_features); |
| 907 |
} else if ((val = strchr(featurestr, '='))) { |
| 908 |
*val = 0; val++;
|
| 909 |
if (!strcmp(featurestr, "family")) { |
| 910 |
char *err;
|
| 911 |
numvalue = strtoul(val, &err, 0);
|
| 912 |
if (!*val || *err || numvalue > 0xff + 0xf) { |
| 913 |
fprintf(stderr, "bad numerical value %s\n", val);
|
| 914 |
goto error;
|
| 915 |
} |
| 916 |
x86_cpu_def->family = numvalue; |
| 917 |
} else if (!strcmp(featurestr, "model")) { |
| 918 |
char *err;
|
| 919 |
numvalue = strtoul(val, &err, 0);
|
| 920 |
if (!*val || *err || numvalue > 0xff) { |
| 921 |
fprintf(stderr, "bad numerical value %s\n", val);
|
| 922 |
goto error;
|
| 923 |
} |
| 924 |
x86_cpu_def->model = numvalue; |
| 925 |
} else if (!strcmp(featurestr, "stepping")) { |
| 926 |
char *err;
|
| 927 |
numvalue = strtoul(val, &err, 0);
|
| 928 |
if (!*val || *err || numvalue > 0xf) { |
| 929 |
fprintf(stderr, "bad numerical value %s\n", val);
|
| 930 |
goto error;
|
| 931 |
} |
| 932 |
x86_cpu_def->stepping = numvalue ; |
| 933 |
} else if (!strcmp(featurestr, "level")) { |
| 934 |
char *err;
|
| 935 |
numvalue = strtoul(val, &err, 0);
|
| 936 |
if (!*val || *err) {
|
| 937 |
fprintf(stderr, "bad numerical value %s\n", val);
|
| 938 |
goto error;
|
| 939 |
} |
| 940 |
x86_cpu_def->level = numvalue; |
| 941 |
} else if (!strcmp(featurestr, "xlevel")) { |
| 942 |
char *err;
|
| 943 |
numvalue = strtoul(val, &err, 0);
|
| 944 |
if (!*val || *err) {
|
| 945 |
fprintf(stderr, "bad numerical value %s\n", val);
|
| 946 |
goto error;
|
| 947 |
} |
| 948 |
if (numvalue < 0x80000000) { |
| 949 |
numvalue += 0x80000000;
|
| 950 |
} |
| 951 |
x86_cpu_def->xlevel = numvalue; |
| 952 |
} else if (!strcmp(featurestr, "vendor")) { |
| 953 |
if (strlen(val) != 12) { |
| 954 |
fprintf(stderr, "vendor string must be 12 chars long\n");
|
| 955 |
goto error;
|
| 956 |
} |
| 957 |
x86_cpu_def->vendor1 = 0;
|
| 958 |
x86_cpu_def->vendor2 = 0;
|
| 959 |
x86_cpu_def->vendor3 = 0;
|
| 960 |
for(i = 0; i < 4; i++) { |
| 961 |
x86_cpu_def->vendor1 |= ((uint8_t)val[i ]) << (8 * i);
|
| 962 |
x86_cpu_def->vendor2 |= ((uint8_t)val[i + 4]) << (8 * i); |
| 963 |
x86_cpu_def->vendor3 |= ((uint8_t)val[i + 8]) << (8 * i); |
| 964 |
} |
| 965 |
x86_cpu_def->vendor_override = 1;
|
| 966 |
} else if (!strcmp(featurestr, "model_id")) { |
| 967 |
pstrcpy(x86_cpu_def->model_id, sizeof(x86_cpu_def->model_id),
|
| 968 |
val); |
| 969 |
} else if (!strcmp(featurestr, "tsc_freq")) { |
| 970 |
int64_t tsc_freq; |
| 971 |
char *err;
|
| 972 |
|
| 973 |
tsc_freq = strtosz_suffix_unit(val, &err, |
| 974 |
STRTOSZ_DEFSUFFIX_B, 1000);
|
| 975 |
if (tsc_freq < 0 || *err) { |
| 976 |
fprintf(stderr, "bad numerical value %s\n", val);
|
| 977 |
goto error;
|
| 978 |
} |
| 979 |
x86_cpu_def->tsc_khz = tsc_freq / 1000;
|
| 980 |
} else if (!strcmp(featurestr, "hv_spinlocks")) { |
| 981 |
char *err;
|
| 982 |
numvalue = strtoul(val, &err, 0);
|
| 983 |
if (!*val || *err) {
|
| 984 |
fprintf(stderr, "bad numerical value %s\n", val);
|
| 985 |
goto error;
|
| 986 |
} |
| 987 |
hyperv_set_spinlock_retries(numvalue); |
| 988 |
} else {
|
| 989 |
fprintf(stderr, "unrecognized feature %s\n", featurestr);
|
| 990 |
goto error;
|
| 991 |
} |
| 992 |
} else if (!strcmp(featurestr, "check")) { |
| 993 |
check_cpuid = 1;
|
| 994 |
} else if (!strcmp(featurestr, "enforce")) { |
| 995 |
check_cpuid = enforce_cpuid = 1;
|
| 996 |
} else if (!strcmp(featurestr, "hv_relaxed")) { |
| 997 |
hyperv_enable_relaxed_timing(true);
|
| 998 |
} else if (!strcmp(featurestr, "hv_vapic")) { |
| 999 |
hyperv_enable_vapic_recommended(true);
|
| 1000 |
} else {
|
| 1001 |
fprintf(stderr, "feature string `%s' not in format (+feature|-feature|feature=xyz)\n", featurestr);
|
| 1002 |
goto error;
|
| 1003 |
} |
| 1004 |
featurestr = strtok(NULL, ","); |
| 1005 |
} |
| 1006 |
x86_cpu_def->features |= plus_features; |
| 1007 |
x86_cpu_def->ext_features |= plus_ext_features; |
| 1008 |
x86_cpu_def->ext2_features |= plus_ext2_features; |
| 1009 |
x86_cpu_def->ext3_features |= plus_ext3_features; |
| 1010 |
x86_cpu_def->kvm_features |= plus_kvm_features; |
| 1011 |
x86_cpu_def->svm_features |= plus_svm_features; |
| 1012 |
x86_cpu_def->features &= ~minus_features; |
| 1013 |
x86_cpu_def->ext_features &= ~minus_ext_features; |
| 1014 |
x86_cpu_def->ext2_features &= ~minus_ext2_features; |
| 1015 |
x86_cpu_def->ext3_features &= ~minus_ext3_features; |
| 1016 |
x86_cpu_def->kvm_features &= ~minus_kvm_features; |
| 1017 |
x86_cpu_def->svm_features &= ~minus_svm_features; |
| 1018 |
if (check_cpuid) {
|
| 1019 |
if (check_features_against_host(x86_cpu_def) && enforce_cpuid)
|
| 1020 |
goto error;
|
| 1021 |
} |
| 1022 |
g_free(s); |
| 1023 |
return 0; |
| 1024 |
|
| 1025 |
error:
|
| 1026 |
g_free(s); |
| 1027 |
return -1; |
| 1028 |
} |
| 1029 |
|
| 1030 |
/* generate a composite string into buf of all cpuid names in featureset
|
| 1031 |
* selected by fbits. indicate truncation at bufsize in the event of overflow.
|
| 1032 |
* if flags, suppress names undefined in featureset.
|
| 1033 |
*/
|
| 1034 |
static void listflags(char *buf, int bufsize, uint32_t fbits, |
| 1035 |
const char **featureset, uint32_t flags) |
| 1036 |
{
|
| 1037 |
const char **p = &featureset[31]; |
| 1038 |
char *q, *b, bit;
|
| 1039 |
int nc;
|
| 1040 |
|
| 1041 |
b = 4 <= bufsize ? buf + (bufsize -= 3) - 1 : NULL; |
| 1042 |
*buf = '\0';
|
| 1043 |
for (q = buf, bit = 31; fbits && bufsize; --p, fbits &= ~(1 << bit), --bit) |
| 1044 |
if (fbits & 1 << bit && (*p || !flags)) { |
| 1045 |
if (*p)
|
| 1046 |
nc = snprintf(q, bufsize, "%s%s", q == buf ? "" : " ", *p); |
| 1047 |
else
|
| 1048 |
nc = snprintf(q, bufsize, "%s[%d]", q == buf ? "" : " ", bit); |
| 1049 |
if (bufsize <= nc) {
|
| 1050 |
if (b) {
|
| 1051 |
memcpy(b, "...", sizeof("...")); |
| 1052 |
} |
| 1053 |
return;
|
| 1054 |
} |
| 1055 |
q += nc; |
| 1056 |
bufsize -= nc; |
| 1057 |
} |
| 1058 |
} |
| 1059 |
|
| 1060 |
/* generate CPU information:
|
| 1061 |
* -? list model names
|
| 1062 |
* -?model list model names/IDs
|
| 1063 |
* -?dump output all model (x86_def_t) data
|
| 1064 |
* -?cpuid list all recognized cpuid flag names
|
| 1065 |
*/
|
| 1066 |
void x86_cpu_list(FILE *f, fprintf_function cpu_fprintf, const char *optarg) |
| 1067 |
{
|
| 1068 |
unsigned char model = !strcmp("?model", optarg); |
| 1069 |
unsigned char dump = !strcmp("?dump", optarg); |
| 1070 |
unsigned char cpuid = !strcmp("?cpuid", optarg); |
| 1071 |
x86_def_t *def; |
| 1072 |
char buf[256]; |
| 1073 |
|
| 1074 |
if (cpuid) {
|
| 1075 |
(*cpu_fprintf)(f, "Recognized CPUID flags:\n");
|
| 1076 |
listflags(buf, sizeof (buf), (uint32_t)~0, feature_name, 1); |
| 1077 |
(*cpu_fprintf)(f, " f_edx: %s\n", buf);
|
| 1078 |
listflags(buf, sizeof (buf), (uint32_t)~0, ext_feature_name, 1); |
| 1079 |
(*cpu_fprintf)(f, " f_ecx: %s\n", buf);
|
| 1080 |
listflags(buf, sizeof (buf), (uint32_t)~0, ext2_feature_name, 1); |
| 1081 |
(*cpu_fprintf)(f, " extf_edx: %s\n", buf);
|
| 1082 |
listflags(buf, sizeof (buf), (uint32_t)~0, ext3_feature_name, 1); |
| 1083 |
(*cpu_fprintf)(f, " extf_ecx: %s\n", buf);
|
| 1084 |
return;
|
| 1085 |
} |
| 1086 |
for (def = x86_defs; def; def = def->next) {
|
| 1087 |
snprintf(buf, sizeof (buf), def->flags ? "[%s]": "%s", def->name); |
| 1088 |
if (model || dump) {
|
| 1089 |
(*cpu_fprintf)(f, "x86 %16s %-48s\n", buf, def->model_id);
|
| 1090 |
} else {
|
| 1091 |
(*cpu_fprintf)(f, "x86 %16s\n", buf);
|
| 1092 |
} |
| 1093 |
if (dump) {
|
| 1094 |
memcpy(buf, &def->vendor1, sizeof (def->vendor1));
|
| 1095 |
memcpy(buf + 4, &def->vendor2, sizeof (def->vendor2)); |
| 1096 |
memcpy(buf + 8, &def->vendor3, sizeof (def->vendor3)); |
| 1097 |
buf[12] = '\0'; |
| 1098 |
(*cpu_fprintf)(f, |
| 1099 |
" family %d model %d stepping %d level %d xlevel 0x%x"
|
| 1100 |
" vendor \"%s\"\n",
|
| 1101 |
def->family, def->model, def->stepping, def->level, |
| 1102 |
def->xlevel, buf); |
| 1103 |
listflags(buf, sizeof (buf), def->features, feature_name, 0); |
| 1104 |
(*cpu_fprintf)(f, " feature_edx %08x (%s)\n", def->features,
|
| 1105 |
buf); |
| 1106 |
listflags(buf, sizeof (buf), def->ext_features, ext_feature_name,
|
| 1107 |
0);
|
| 1108 |
(*cpu_fprintf)(f, " feature_ecx %08x (%s)\n", def->ext_features,
|
| 1109 |
buf); |
| 1110 |
listflags(buf, sizeof (buf), def->ext2_features, ext2_feature_name,
|
| 1111 |
0);
|
| 1112 |
(*cpu_fprintf)(f, " extfeature_edx %08x (%s)\n",
|
| 1113 |
def->ext2_features, buf); |
| 1114 |
listflags(buf, sizeof (buf), def->ext3_features, ext3_feature_name,
|
| 1115 |
0);
|
| 1116 |
(*cpu_fprintf)(f, " extfeature_ecx %08x (%s)\n",
|
| 1117 |
def->ext3_features, buf); |
| 1118 |
(*cpu_fprintf)(f, "\n");
|
| 1119 |
} |
| 1120 |
} |
| 1121 |
if (kvm_enabled()) {
|
| 1122 |
(*cpu_fprintf)(f, "x86 %16s\n", "[host]"); |
| 1123 |
} |
| 1124 |
} |
| 1125 |
|
| 1126 |
int cpu_x86_register(X86CPU *cpu, const char *cpu_model) |
| 1127 |
{
|
| 1128 |
CPUX86State *env = &cpu->env; |
| 1129 |
x86_def_t def1, *def = &def1; |
| 1130 |
Error *error = NULL;
|
| 1131 |
|
| 1132 |
memset(def, 0, sizeof(*def)); |
| 1133 |
|
| 1134 |
if (cpu_x86_find_by_name(def, cpu_model) < 0) |
| 1135 |
return -1; |
| 1136 |
if (def->vendor1) {
|
| 1137 |
env->cpuid_vendor1 = def->vendor1; |
| 1138 |
env->cpuid_vendor2 = def->vendor2; |
| 1139 |
env->cpuid_vendor3 = def->vendor3; |
| 1140 |
} else {
|
| 1141 |
env->cpuid_vendor1 = CPUID_VENDOR_INTEL_1; |
| 1142 |
env->cpuid_vendor2 = CPUID_VENDOR_INTEL_2; |
| 1143 |
env->cpuid_vendor3 = CPUID_VENDOR_INTEL_3; |
| 1144 |
} |
| 1145 |
env->cpuid_vendor_override = def->vendor_override; |
| 1146 |
object_property_set_int(OBJECT(cpu), def->level, "level", &error);
|
| 1147 |
object_property_set_int(OBJECT(cpu), def->family, "family", &error);
|
| 1148 |
object_property_set_int(OBJECT(cpu), def->model, "model", &error);
|
| 1149 |
object_property_set_int(OBJECT(cpu), def->stepping, "stepping", &error);
|
| 1150 |
env->cpuid_features = def->features; |
| 1151 |
env->cpuid_ext_features = def->ext_features; |
| 1152 |
env->cpuid_ext2_features = def->ext2_features; |
| 1153 |
env->cpuid_ext3_features = def->ext3_features; |
| 1154 |
object_property_set_int(OBJECT(cpu), def->xlevel, "xlevel", &error);
|
| 1155 |
env->cpuid_kvm_features = def->kvm_features; |
| 1156 |
env->cpuid_svm_features = def->svm_features; |
| 1157 |
env->cpuid_ext4_features = def->ext4_features; |
| 1158 |
env->cpuid_7_0_ebx = def->cpuid_7_0_ebx_features; |
| 1159 |
env->cpuid_xlevel2 = def->xlevel2; |
| 1160 |
object_property_set_int(OBJECT(cpu), (int64_t)def->tsc_khz * 1000,
|
| 1161 |
"tsc-frequency", &error);
|
| 1162 |
if (!kvm_enabled()) {
|
| 1163 |
env->cpuid_features &= TCG_FEATURES; |
| 1164 |
env->cpuid_ext_features &= TCG_EXT_FEATURES; |
| 1165 |
env->cpuid_ext2_features &= (TCG_EXT2_FEATURES |
| 1166 |
#ifdef TARGET_X86_64
|
| 1167 |
| CPUID_EXT2_SYSCALL | CPUID_EXT2_LM |
| 1168 |
#endif
|
| 1169 |
); |
| 1170 |
env->cpuid_ext3_features &= TCG_EXT3_FEATURES; |
| 1171 |
env->cpuid_svm_features &= TCG_SVM_FEATURES; |
| 1172 |
} |
| 1173 |
object_property_set_str(OBJECT(cpu), def->model_id, "model-id", &error);
|
| 1174 |
if (error_is_set(&error)) {
|
| 1175 |
error_free(error); |
| 1176 |
return -1; |
| 1177 |
} |
| 1178 |
return 0; |
| 1179 |
} |
| 1180 |
|
| 1181 |
#if !defined(CONFIG_USER_ONLY)
|
| 1182 |
/* copy vendor id string to 32 bit register, nul pad as needed
|
| 1183 |
*/
|
| 1184 |
static void cpyid(const char *s, uint32_t *id) |
| 1185 |
{
|
| 1186 |
char *d = (char *)id; |
| 1187 |
char i;
|
| 1188 |
|
| 1189 |
for (i = sizeof (*id); i--; ) |
| 1190 |
*d++ = *s ? *s++ : '\0';
|
| 1191 |
} |
| 1192 |
|
| 1193 |
/* interpret radix and convert from string to arbitrary scalar,
|
| 1194 |
* otherwise flag failure
|
| 1195 |
*/
|
| 1196 |
#define setscalar(pval, str, perr) \
|
| 1197 |
{ \
|
| 1198 |
char *pend; \
|
| 1199 |
unsigned long ul; \ |
| 1200 |
\ |
| 1201 |
ul = strtoul(str, &pend, 0); \
|
| 1202 |
*str && !*pend ? (*pval = ul) : (*perr = 1); \
|
| 1203 |
} |
| 1204 |
|
| 1205 |
/* map cpuid options to feature bits, otherwise return failure
|
| 1206 |
* (option tags in *str are delimited by whitespace)
|
| 1207 |
*/
|
| 1208 |
static void setfeatures(uint32_t *pval, const char *str, |
| 1209 |
const char **featureset, int *perr) |
| 1210 |
{
|
| 1211 |
const char *p, *q; |
| 1212 |
|
| 1213 |
for (q = p = str; *p || *q; q = p) {
|
| 1214 |
while (iswhite(*p))
|
| 1215 |
q = ++p; |
| 1216 |
while (*p && !iswhite(*p))
|
| 1217 |
++p; |
| 1218 |
if (!*q && !*p)
|
| 1219 |
return;
|
| 1220 |
if (!lookup_feature(pval, q, p, featureset)) {
|
| 1221 |
fprintf(stderr, "error: feature \"%.*s\" not available in set\n",
|
| 1222 |
(int)(p - q), q);
|
| 1223 |
*perr = 1;
|
| 1224 |
return;
|
| 1225 |
} |
| 1226 |
} |
| 1227 |
} |
| 1228 |
|
| 1229 |
/* map config file options to x86_def_t form
|
| 1230 |
*/
|
| 1231 |
static int cpudef_setfield(const char *name, const char *str, void *opaque) |
| 1232 |
{
|
| 1233 |
x86_def_t *def = opaque; |
| 1234 |
int err = 0; |
| 1235 |
|
| 1236 |
if (!strcmp(name, "name")) { |
| 1237 |
g_free((void *)def->name);
|
| 1238 |
def->name = g_strdup(str); |
| 1239 |
} else if (!strcmp(name, "model_id")) { |
| 1240 |
strncpy(def->model_id, str, sizeof (def->model_id));
|
| 1241 |
} else if (!strcmp(name, "level")) { |
| 1242 |
setscalar(&def->level, str, &err) |
| 1243 |
} else if (!strcmp(name, "vendor")) { |
| 1244 |
cpyid(&str[0], &def->vendor1);
|
| 1245 |
cpyid(&str[4], &def->vendor2);
|
| 1246 |
cpyid(&str[8], &def->vendor3);
|
| 1247 |
} else if (!strcmp(name, "family")) { |
| 1248 |
setscalar(&def->family, str, &err) |
| 1249 |
} else if (!strcmp(name, "model")) { |
| 1250 |
setscalar(&def->model, str, &err) |
| 1251 |
} else if (!strcmp(name, "stepping")) { |
| 1252 |
setscalar(&def->stepping, str, &err) |
| 1253 |
} else if (!strcmp(name, "feature_edx")) { |
| 1254 |
setfeatures(&def->features, str, feature_name, &err); |
| 1255 |
} else if (!strcmp(name, "feature_ecx")) { |
| 1256 |
setfeatures(&def->ext_features, str, ext_feature_name, &err); |
| 1257 |
} else if (!strcmp(name, "extfeature_edx")) { |
| 1258 |
setfeatures(&def->ext2_features, str, ext2_feature_name, &err); |
| 1259 |
} else if (!strcmp(name, "extfeature_ecx")) { |
| 1260 |
setfeatures(&def->ext3_features, str, ext3_feature_name, &err); |
| 1261 |
} else if (!strcmp(name, "xlevel")) { |
| 1262 |
setscalar(&def->xlevel, str, &err) |
| 1263 |
} else {
|
| 1264 |
fprintf(stderr, "error: unknown option [%s = %s]\n", name, str);
|
| 1265 |
return (1); |
| 1266 |
} |
| 1267 |
if (err) {
|
| 1268 |
fprintf(stderr, "error: bad option value [%s = %s]\n", name, str);
|
| 1269 |
return (1); |
| 1270 |
} |
| 1271 |
return (0); |
| 1272 |
} |
| 1273 |
|
| 1274 |
/* register config file entry as x86_def_t
|
| 1275 |
*/
|
| 1276 |
static int cpudef_register(QemuOpts *opts, void *opaque) |
| 1277 |
{
|
| 1278 |
x86_def_t *def = g_malloc0(sizeof (x86_def_t));
|
| 1279 |
|
| 1280 |
qemu_opt_foreach(opts, cpudef_setfield, def, 1);
|
| 1281 |
def->next = x86_defs; |
| 1282 |
x86_defs = def; |
| 1283 |
return (0); |
| 1284 |
} |
| 1285 |
|
| 1286 |
void cpu_clear_apic_feature(CPUX86State *env)
|
| 1287 |
{
|
| 1288 |
env->cpuid_features &= ~CPUID_APIC; |
| 1289 |
} |
| 1290 |
|
| 1291 |
#endif /* !CONFIG_USER_ONLY */ |
| 1292 |
|
| 1293 |
/* register "cpudef" models defined in configuration file. Here we first
|
| 1294 |
* preload any built-in definitions
|
| 1295 |
*/
|
| 1296 |
void x86_cpudef_setup(void) |
| 1297 |
{
|
| 1298 |
int i, j;
|
| 1299 |
static const char *model_with_versions[] = { "qemu32", "qemu64", "athlon" }; |
| 1300 |
|
| 1301 |
for (i = 0; i < ARRAY_SIZE(builtin_x86_defs); ++i) { |
| 1302 |
builtin_x86_defs[i].next = x86_defs; |
| 1303 |
builtin_x86_defs[i].flags = 1;
|
| 1304 |
|
| 1305 |
/* Look for specific "cpudef" models that */
|
| 1306 |
/* have the QEMU version in .model_id */
|
| 1307 |
for (j = 0; j < ARRAY_SIZE(model_with_versions); j++) { |
| 1308 |
if (strcmp(model_with_versions[j], builtin_x86_defs[i].name) == 0) { |
| 1309 |
pstrcpy(builtin_x86_defs[i].model_id, sizeof(builtin_x86_defs[i].model_id), "QEMU Virtual CPU version "); |
| 1310 |
pstrcat(builtin_x86_defs[i].model_id, sizeof(builtin_x86_defs[i].model_id), qemu_get_version());
|
| 1311 |
break;
|
| 1312 |
} |
| 1313 |
} |
| 1314 |
|
| 1315 |
x86_defs = &builtin_x86_defs[i]; |
| 1316 |
} |
| 1317 |
#if !defined(CONFIG_USER_ONLY)
|
| 1318 |
qemu_opts_foreach(qemu_find_opts("cpudef"), cpudef_register, NULL, 0); |
| 1319 |
#endif
|
| 1320 |
} |
| 1321 |
|
| 1322 |
static void get_cpuid_vendor(CPUX86State *env, uint32_t *ebx, |
| 1323 |
uint32_t *ecx, uint32_t *edx) |
| 1324 |
{
|
| 1325 |
*ebx = env->cpuid_vendor1; |
| 1326 |
*edx = env->cpuid_vendor2; |
| 1327 |
*ecx = env->cpuid_vendor3; |
| 1328 |
|
| 1329 |
/* sysenter isn't supported on compatibility mode on AMD, syscall
|
| 1330 |
* isn't supported in compatibility mode on Intel.
|
| 1331 |
* Normally we advertise the actual cpu vendor, but you can override
|
| 1332 |
* this if you want to use KVM's sysenter/syscall emulation
|
| 1333 |
* in compatibility mode and when doing cross vendor migration
|
| 1334 |
*/
|
| 1335 |
if (kvm_enabled() && ! env->cpuid_vendor_override) {
|
| 1336 |
host_cpuid(0, 0, NULL, ebx, ecx, edx); |
| 1337 |
} |
| 1338 |
} |
| 1339 |
|
| 1340 |
void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
|
| 1341 |
uint32_t *eax, uint32_t *ebx, |
| 1342 |
uint32_t *ecx, uint32_t *edx) |
| 1343 |
{
|
| 1344 |
/* test if maximum index reached */
|
| 1345 |
if (index & 0x80000000) { |
| 1346 |
if (index > env->cpuid_xlevel) {
|
| 1347 |
if (env->cpuid_xlevel2 > 0) { |
| 1348 |
/* Handle the Centaur's CPUID instruction. */
|
| 1349 |
if (index > env->cpuid_xlevel2) {
|
| 1350 |
index = env->cpuid_xlevel2; |
| 1351 |
} else if (index < 0xC0000000) { |
| 1352 |
index = env->cpuid_xlevel; |
| 1353 |
} |
| 1354 |
} else {
|
| 1355 |
index = env->cpuid_xlevel; |
| 1356 |
} |
| 1357 |
} |
| 1358 |
} else {
|
| 1359 |
if (index > env->cpuid_level)
|
| 1360 |
index = env->cpuid_level; |
| 1361 |
} |
| 1362 |
|
| 1363 |
switch(index) {
|
| 1364 |
case 0: |
| 1365 |
*eax = env->cpuid_level; |
| 1366 |
get_cpuid_vendor(env, ebx, ecx, edx); |
| 1367 |
break;
|
| 1368 |
case 1: |
| 1369 |
*eax = env->cpuid_version; |
| 1370 |
*ebx = (env->cpuid_apic_id << 24) | 8 << 8; /* CLFLUSH size in quad words, Linux wants it. */ |
| 1371 |
*ecx = env->cpuid_ext_features; |
| 1372 |
*edx = env->cpuid_features; |
| 1373 |
if (env->nr_cores * env->nr_threads > 1) { |
| 1374 |
*ebx |= (env->nr_cores * env->nr_threads) << 16;
|
| 1375 |
*edx |= 1 << 28; /* HTT bit */ |
| 1376 |
} |
| 1377 |
break;
|
| 1378 |
case 2: |
| 1379 |
/* cache info: needed for Pentium Pro compatibility */
|
| 1380 |
*eax = 1;
|
| 1381 |
*ebx = 0;
|
| 1382 |
*ecx = 0;
|
| 1383 |
*edx = 0x2c307d;
|
| 1384 |
break;
|
| 1385 |
case 4: |
| 1386 |
/* cache info: needed for Core compatibility */
|
| 1387 |
if (env->nr_cores > 1) { |
| 1388 |
*eax = (env->nr_cores - 1) << 26; |
| 1389 |
} else {
|
| 1390 |
*eax = 0;
|
| 1391 |
} |
| 1392 |
switch (count) {
|
| 1393 |
case 0: /* L1 dcache info */ |
| 1394 |
*eax |= 0x0000121;
|
| 1395 |
*ebx = 0x1c0003f;
|
| 1396 |
*ecx = 0x000003f;
|
| 1397 |
*edx = 0x0000001;
|
| 1398 |
break;
|
| 1399 |
case 1: /* L1 icache info */ |
| 1400 |
*eax |= 0x0000122;
|
| 1401 |
*ebx = 0x1c0003f;
|
| 1402 |
*ecx = 0x000003f;
|
| 1403 |
*edx = 0x0000001;
|
| 1404 |
break;
|
| 1405 |
case 2: /* L2 cache info */ |
| 1406 |
*eax |= 0x0000143;
|
| 1407 |
if (env->nr_threads > 1) { |
| 1408 |
*eax |= (env->nr_threads - 1) << 14; |
| 1409 |
} |
| 1410 |
*ebx = 0x3c0003f;
|
| 1411 |
*ecx = 0x0000fff;
|
| 1412 |
*edx = 0x0000001;
|
| 1413 |
break;
|
| 1414 |
default: /* end of info */ |
| 1415 |
*eax = 0;
|
| 1416 |
*ebx = 0;
|
| 1417 |
*ecx = 0;
|
| 1418 |
*edx = 0;
|
| 1419 |
break;
|
| 1420 |
} |
| 1421 |
break;
|
| 1422 |
case 5: |
| 1423 |
/* mwait info: needed for Core compatibility */
|
| 1424 |
*eax = 0; /* Smallest monitor-line size in bytes */ |
| 1425 |
*ebx = 0; /* Largest monitor-line size in bytes */ |
| 1426 |
*ecx = CPUID_MWAIT_EMX | CPUID_MWAIT_IBE; |
| 1427 |
*edx = 0;
|
| 1428 |
break;
|
| 1429 |
case 6: |
| 1430 |
/* Thermal and Power Leaf */
|
| 1431 |
*eax = 0;
|
| 1432 |
*ebx = 0;
|
| 1433 |
*ecx = 0;
|
| 1434 |
*edx = 0;
|
| 1435 |
break;
|
| 1436 |
case 7: |
| 1437 |
/* Structured Extended Feature Flags Enumeration Leaf */
|
| 1438 |
if (count == 0) { |
| 1439 |
*eax = 0; /* Maximum ECX value for sub-leaves */ |
| 1440 |
*ebx = env->cpuid_7_0_ebx; /* Feature flags */
|
| 1441 |
*ecx = 0; /* Reserved */ |
| 1442 |
*edx = 0; /* Reserved */ |
| 1443 |
} else {
|
| 1444 |
*eax = 0;
|
| 1445 |
*ebx = 0;
|
| 1446 |
*ecx = 0;
|
| 1447 |
*edx = 0;
|
| 1448 |
} |
| 1449 |
break;
|
| 1450 |
case 9: |
| 1451 |
/* Direct Cache Access Information Leaf */
|
| 1452 |
*eax = 0; /* Bits 0-31 in DCA_CAP MSR */ |
| 1453 |
*ebx = 0;
|
| 1454 |
*ecx = 0;
|
| 1455 |
*edx = 0;
|
| 1456 |
break;
|
| 1457 |
case 0xA: |
| 1458 |
/* Architectural Performance Monitoring Leaf */
|
| 1459 |
if (kvm_enabled()) {
|
| 1460 |
KVMState *s = env->kvm_state; |
| 1461 |
|
| 1462 |
*eax = kvm_arch_get_supported_cpuid(s, 0xA, count, R_EAX);
|
| 1463 |
*ebx = kvm_arch_get_supported_cpuid(s, 0xA, count, R_EBX);
|
| 1464 |
*ecx = kvm_arch_get_supported_cpuid(s, 0xA, count, R_ECX);
|
| 1465 |
*edx = kvm_arch_get_supported_cpuid(s, 0xA, count, R_EDX);
|
| 1466 |
} else {
|
| 1467 |
*eax = 0;
|
| 1468 |
*ebx = 0;
|
| 1469 |
*ecx = 0;
|
| 1470 |
*edx = 0;
|
| 1471 |
} |
| 1472 |
break;
|
| 1473 |
case 0xD: |
| 1474 |
/* Processor Extended State */
|
| 1475 |
if (!(env->cpuid_ext_features & CPUID_EXT_XSAVE)) {
|
| 1476 |
*eax = 0;
|
| 1477 |
*ebx = 0;
|
| 1478 |
*ecx = 0;
|
| 1479 |
*edx = 0;
|
| 1480 |
break;
|
| 1481 |
} |
| 1482 |
if (kvm_enabled()) {
|
| 1483 |
KVMState *s = env->kvm_state; |
| 1484 |
|
| 1485 |
*eax = kvm_arch_get_supported_cpuid(s, 0xd, count, R_EAX);
|
| 1486 |
*ebx = kvm_arch_get_supported_cpuid(s, 0xd, count, R_EBX);
|
| 1487 |
*ecx = kvm_arch_get_supported_cpuid(s, 0xd, count, R_ECX);
|
| 1488 |
*edx = kvm_arch_get_supported_cpuid(s, 0xd, count, R_EDX);
|
| 1489 |
} else {
|
| 1490 |
*eax = 0;
|
| 1491 |
*ebx = 0;
|
| 1492 |
*ecx = 0;
|
| 1493 |
*edx = 0;
|
| 1494 |
} |
| 1495 |
break;
|
| 1496 |
case 0x80000000: |
| 1497 |
*eax = env->cpuid_xlevel; |
| 1498 |
*ebx = env->cpuid_vendor1; |
| 1499 |
*edx = env->cpuid_vendor2; |
| 1500 |
*ecx = env->cpuid_vendor3; |
| 1501 |
break;
|
| 1502 |
case 0x80000001: |
| 1503 |
*eax = env->cpuid_version; |
| 1504 |
*ebx = 0;
|
| 1505 |
*ecx = env->cpuid_ext3_features; |
| 1506 |
*edx = env->cpuid_ext2_features; |
| 1507 |
|
| 1508 |
/* The Linux kernel checks for the CMPLegacy bit and
|
| 1509 |
* discards multiple thread information if it is set.
|
| 1510 |
* So dont set it here for Intel to make Linux guests happy.
|
| 1511 |
*/
|
| 1512 |
if (env->nr_cores * env->nr_threads > 1) { |
| 1513 |
uint32_t tebx, tecx, tedx; |
| 1514 |
get_cpuid_vendor(env, &tebx, &tecx, &tedx); |
| 1515 |
if (tebx != CPUID_VENDOR_INTEL_1 ||
|
| 1516 |
tedx != CPUID_VENDOR_INTEL_2 || |
| 1517 |
tecx != CPUID_VENDOR_INTEL_3) {
|
| 1518 |
*ecx |= 1 << 1; /* CmpLegacy bit */ |
| 1519 |
} |
| 1520 |
} |
| 1521 |
break;
|
| 1522 |
case 0x80000002: |
| 1523 |
case 0x80000003: |
| 1524 |
case 0x80000004: |
| 1525 |
*eax = env->cpuid_model[(index - 0x80000002) * 4 + 0]; |
| 1526 |
*ebx = env->cpuid_model[(index - 0x80000002) * 4 + 1]; |
| 1527 |
*ecx = env->cpuid_model[(index - 0x80000002) * 4 + 2]; |
| 1528 |
*edx = env->cpuid_model[(index - 0x80000002) * 4 + 3]; |
| 1529 |
break;
|
| 1530 |
case 0x80000005: |
| 1531 |
/* cache info (L1 cache) */
|
| 1532 |
*eax = 0x01ff01ff;
|
| 1533 |
*ebx = 0x01ff01ff;
|
| 1534 |
*ecx = 0x40020140;
|
| 1535 |
*edx = 0x40020140;
|
| 1536 |
break;
|
| 1537 |
case 0x80000006: |
| 1538 |
/* cache info (L2 cache) */
|
| 1539 |
*eax = 0;
|
| 1540 |
*ebx = 0x42004200;
|
| 1541 |
*ecx = 0x02008140;
|
| 1542 |
*edx = 0;
|
| 1543 |
break;
|
| 1544 |
case 0x80000008: |
| 1545 |
/* virtual & phys address size in low 2 bytes. */
|
| 1546 |
/* XXX: This value must match the one used in the MMU code. */
|
| 1547 |
if (env->cpuid_ext2_features & CPUID_EXT2_LM) {
|
| 1548 |
/* 64 bit processor */
|
| 1549 |
/* XXX: The physical address space is limited to 42 bits in exec.c. */
|
| 1550 |
*eax = 0x00003028; /* 48 bits virtual, 40 bits physical */ |
| 1551 |
} else {
|
| 1552 |
if (env->cpuid_features & CPUID_PSE36)
|
| 1553 |
*eax = 0x00000024; /* 36 bits physical */ |
| 1554 |
else
|
| 1555 |
*eax = 0x00000020; /* 32 bits physical */ |
| 1556 |
} |
| 1557 |
*ebx = 0;
|
| 1558 |
*ecx = 0;
|
| 1559 |
*edx = 0;
|
| 1560 |
if (env->nr_cores * env->nr_threads > 1) { |
| 1561 |
*ecx |= (env->nr_cores * env->nr_threads) - 1;
|
| 1562 |
} |
| 1563 |
break;
|
| 1564 |
case 0x8000000A: |
| 1565 |
if (env->cpuid_ext3_features & CPUID_EXT3_SVM) {
|
| 1566 |
*eax = 0x00000001; /* SVM Revision */ |
| 1567 |
*ebx = 0x00000010; /* nr of ASIDs */ |
| 1568 |
*ecx = 0;
|
| 1569 |
*edx = env->cpuid_svm_features; /* optional features */
|
| 1570 |
} else {
|
| 1571 |
*eax = 0;
|
| 1572 |
*ebx = 0;
|
| 1573 |
*ecx = 0;
|
| 1574 |
*edx = 0;
|
| 1575 |
} |
| 1576 |
break;
|
| 1577 |
case 0xC0000000: |
| 1578 |
*eax = env->cpuid_xlevel2; |
| 1579 |
*ebx = 0;
|
| 1580 |
*ecx = 0;
|
| 1581 |
*edx = 0;
|
| 1582 |
break;
|
| 1583 |
case 0xC0000001: |
| 1584 |
/* Support for VIA CPU's CPUID instruction */
|
| 1585 |
*eax = env->cpuid_version; |
| 1586 |
*ebx = 0;
|
| 1587 |
*ecx = 0;
|
| 1588 |
*edx = env->cpuid_ext4_features; |
| 1589 |
break;
|
| 1590 |
case 0xC0000002: |
| 1591 |
case 0xC0000003: |
| 1592 |
case 0xC0000004: |
| 1593 |
/* Reserved for the future, and now filled with zero */
|
| 1594 |
*eax = 0;
|
| 1595 |
*ebx = 0;
|
| 1596 |
*ecx = 0;
|
| 1597 |
*edx = 0;
|
| 1598 |
break;
|
| 1599 |
default:
|
| 1600 |
/* reserved values: zero */
|
| 1601 |
*eax = 0;
|
| 1602 |
*ebx = 0;
|
| 1603 |
*ecx = 0;
|
| 1604 |
*edx = 0;
|
| 1605 |
break;
|
| 1606 |
} |
| 1607 |
} |
| 1608 |
|
| 1609 |
/* CPUClass::reset() */
|
| 1610 |
static void x86_cpu_reset(CPUState *s) |
| 1611 |
{
|
| 1612 |
X86CPU *cpu = X86_CPU(s); |
| 1613 |
X86CPUClass *xcc = X86_CPU_GET_CLASS(cpu); |
| 1614 |
CPUX86State *env = &cpu->env; |
| 1615 |
int i;
|
| 1616 |
|
| 1617 |
if (qemu_loglevel_mask(CPU_LOG_RESET)) {
|
| 1618 |
qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
|
| 1619 |
log_cpu_state(env, X86_DUMP_FPU | X86_DUMP_CCOP); |
| 1620 |
} |
| 1621 |
|
| 1622 |
xcc->parent_reset(s); |
| 1623 |
|
| 1624 |
|
| 1625 |
memset(env, 0, offsetof(CPUX86State, breakpoints));
|
| 1626 |
|
| 1627 |
tlb_flush(env, 1);
|
| 1628 |
|
| 1629 |
env->old_exception = -1;
|
| 1630 |
|
| 1631 |
/* init to reset state */
|
| 1632 |
|
| 1633 |
#ifdef CONFIG_SOFTMMU
|
| 1634 |
env->hflags |= HF_SOFTMMU_MASK; |
| 1635 |
#endif
|
| 1636 |
env->hflags2 |= HF2_GIF_MASK; |
| 1637 |
|
| 1638 |
cpu_x86_update_cr0(env, 0x60000010);
|
| 1639 |
env->a20_mask = ~0x0;
|
| 1640 |
env->smbase = 0x30000;
|
| 1641 |
|
| 1642 |
env->idt.limit = 0xffff;
|
| 1643 |
env->gdt.limit = 0xffff;
|
| 1644 |
env->ldt.limit = 0xffff;
|
| 1645 |
env->ldt.flags = DESC_P_MASK | (2 << DESC_TYPE_SHIFT);
|
| 1646 |
env->tr.limit = 0xffff;
|
| 1647 |
env->tr.flags = DESC_P_MASK | (11 << DESC_TYPE_SHIFT);
|
| 1648 |
|
| 1649 |
cpu_x86_load_seg_cache(env, R_CS, 0xf000, 0xffff0000, 0xffff, |
| 1650 |
DESC_P_MASK | DESC_S_MASK | DESC_CS_MASK | |
| 1651 |
DESC_R_MASK | DESC_A_MASK); |
| 1652 |
cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffff, |
| 1653 |
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | |
| 1654 |
DESC_A_MASK); |
| 1655 |
cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffff, |
| 1656 |
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | |
| 1657 |
DESC_A_MASK); |
| 1658 |
cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffff, |
| 1659 |
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | |
| 1660 |
DESC_A_MASK); |
| 1661 |
cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffff, |
| 1662 |
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | |
| 1663 |
DESC_A_MASK); |
| 1664 |
cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffff, |
| 1665 |
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | |
| 1666 |
DESC_A_MASK); |
| 1667 |
|
| 1668 |
env->eip = 0xfff0;
|
| 1669 |
env->regs[R_EDX] = env->cpuid_version; |
| 1670 |
|
| 1671 |
env->eflags = 0x2;
|
| 1672 |
|
| 1673 |
/* FPU init */
|
| 1674 |
for (i = 0; i < 8; i++) { |
| 1675 |
env->fptags[i] = 1;
|
| 1676 |
} |
| 1677 |
env->fpuc = 0x37f;
|
| 1678 |
|
| 1679 |
env->mxcsr = 0x1f80;
|
| 1680 |
|
| 1681 |
env->pat = 0x0007040600070406ULL;
|
| 1682 |
env->msr_ia32_misc_enable = MSR_IA32_MISC_ENABLE_DEFAULT; |
| 1683 |
|
| 1684 |
memset(env->dr, 0, sizeof(env->dr)); |
| 1685 |
env->dr[6] = DR6_FIXED_1;
|
| 1686 |
env->dr[7] = DR7_FIXED_1;
|
| 1687 |
cpu_breakpoint_remove_all(env, BP_CPU); |
| 1688 |
cpu_watchpoint_remove_all(env, BP_CPU); |
| 1689 |
} |
| 1690 |
|
| 1691 |
static void mce_init(X86CPU *cpu) |
| 1692 |
{
|
| 1693 |
CPUX86State *cenv = &cpu->env; |
| 1694 |
unsigned int bank; |
| 1695 |
|
| 1696 |
if (((cenv->cpuid_version >> 8) & 0xf) >= 6 |
| 1697 |
&& (cenv->cpuid_features & (CPUID_MCE | CPUID_MCA)) == |
| 1698 |
(CPUID_MCE | CPUID_MCA)) {
|
| 1699 |
cenv->mcg_cap = MCE_CAP_DEF | MCE_BANKS_DEF; |
| 1700 |
cenv->mcg_ctl = ~(uint64_t)0;
|
| 1701 |
for (bank = 0; bank < MCE_BANKS_DEF; bank++) { |
| 1702 |
cenv->mce_banks[bank * 4] = ~(uint64_t)0; |
| 1703 |
} |
| 1704 |
} |
| 1705 |
} |
| 1706 |
|
| 1707 |
void x86_cpu_realize(Object *obj, Error **errp)
|
| 1708 |
{
|
| 1709 |
X86CPU *cpu = X86_CPU(obj); |
| 1710 |
|
| 1711 |
mce_init(cpu); |
| 1712 |
qemu_init_vcpu(&cpu->env); |
| 1713 |
} |
| 1714 |
|
| 1715 |
static void x86_cpu_initfn(Object *obj) |
| 1716 |
{
|
| 1717 |
X86CPU *cpu = X86_CPU(obj); |
| 1718 |
CPUX86State *env = &cpu->env; |
| 1719 |
|
| 1720 |
cpu_exec_init(env); |
| 1721 |
|
| 1722 |
object_property_add(obj, "family", "int", |
| 1723 |
x86_cpuid_version_get_family, |
| 1724 |
x86_cpuid_version_set_family, NULL, NULL, NULL); |
| 1725 |
object_property_add(obj, "model", "int", |
| 1726 |
x86_cpuid_version_get_model, |
| 1727 |
x86_cpuid_version_set_model, NULL, NULL, NULL); |
| 1728 |
object_property_add(obj, "stepping", "int", |
| 1729 |
x86_cpuid_version_get_stepping, |
| 1730 |
x86_cpuid_version_set_stepping, NULL, NULL, NULL); |
| 1731 |
object_property_add(obj, "level", "int", |
| 1732 |
x86_cpuid_get_level, |
| 1733 |
x86_cpuid_set_level, NULL, NULL, NULL); |
| 1734 |
object_property_add(obj, "xlevel", "int", |
| 1735 |
x86_cpuid_get_xlevel, |
| 1736 |
x86_cpuid_set_xlevel, NULL, NULL, NULL); |
| 1737 |
object_property_add_str(obj, "vendor",
|
| 1738 |
x86_cpuid_get_vendor, |
| 1739 |
x86_cpuid_set_vendor, NULL);
|
| 1740 |
object_property_add_str(obj, "model-id",
|
| 1741 |
x86_cpuid_get_model_id, |
| 1742 |
x86_cpuid_set_model_id, NULL);
|
| 1743 |
object_property_add(obj, "tsc-frequency", "int", |
| 1744 |
x86_cpuid_get_tsc_freq, |
| 1745 |
x86_cpuid_set_tsc_freq, NULL, NULL, NULL); |
| 1746 |
|
| 1747 |
env->cpuid_apic_id = env->cpu_index; |
| 1748 |
} |
| 1749 |
|
| 1750 |
static void x86_cpu_common_class_init(ObjectClass *oc, void *data) |
| 1751 |
{
|
| 1752 |
X86CPUClass *xcc = X86_CPU_CLASS(oc); |
| 1753 |
CPUClass *cc = CPU_CLASS(oc); |
| 1754 |
|
| 1755 |
xcc->parent_reset = cc->reset; |
| 1756 |
cc->reset = x86_cpu_reset; |
| 1757 |
} |
| 1758 |
|
| 1759 |
static const TypeInfo x86_cpu_type_info = { |
| 1760 |
.name = TYPE_X86_CPU, |
| 1761 |
.parent = TYPE_CPU, |
| 1762 |
.instance_size = sizeof(X86CPU),
|
| 1763 |
.instance_init = x86_cpu_initfn, |
| 1764 |
.abstract = false,
|
| 1765 |
.class_size = sizeof(X86CPUClass),
|
| 1766 |
.class_init = x86_cpu_common_class_init, |
| 1767 |
}; |
| 1768 |
|
| 1769 |
static void x86_cpu_register_types(void) |
| 1770 |
{
|
| 1771 |
type_register_static(&x86_cpu_type_info); |
| 1772 |
} |
| 1773 |
|
| 1774 |
type_init(x86_cpu_register_types) |