root / target-i386 / cpuid.c @ ebda377f
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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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|
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#include "qemu-option.h" |
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#include "qemu-config.h" |
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|
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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 */, "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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NULL, "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" /* Intel xd */, NULL, "mmxext", "mmx", |
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"fxsr", "fxsr_opt" /* AMD ffxsr */, "pdpe1gb" /* AMD Page1GB */, "rdtscp", |
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NULL, "lm" /* Intel 64 */, "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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static const char *kvm_feature_name[] = { |
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"kvmclock", "kvm_nopiodelay", "kvm_mmu", NULL, "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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|
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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 success, otherwise return zero
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*/
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static int 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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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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break;
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} |
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return (mask ? 1 : 0); |
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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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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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} 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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.model_id = "QEMU Virtual CPU version " QEMU_VERSION,
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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 | |
| 333 |
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) | |
| 361 |
CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX, |
| 362 |
/* 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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{
|
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.name = "qemu32",
|
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.level = 4,
|
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.family = 6,
|
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.model = 3,
|
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.stepping = 3,
|
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.features = PPRO_FEATURES, |
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.ext_features = CPUID_EXT_SSE3 | CPUID_EXT_POPCNT, |
| 378 |
.xlevel = 0x80000004,
|
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.model_id = "QEMU Virtual CPU version " QEMU_VERSION,
|
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}, |
| 381 |
{
|
| 382 |
.name = "kvm32",
|
| 383 |
.level = 5,
|
| 384 |
.family = 15,
|
| 385 |
.model = 6,
|
| 386 |
.stepping = 1,
|
| 387 |
.features = PPRO_FEATURES | |
| 388 |
CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_PSE36, |
| 389 |
.ext_features = CPUID_EXT_SSE3, |
| 390 |
.ext2_features = PPRO_FEATURES & EXT2_FEATURE_MASK, |
| 391 |
.ext3_features = 0,
|
| 392 |
.xlevel = 0x80000008,
|
| 393 |
.model_id = "Common 32-bit KVM processor"
|
| 394 |
}, |
| 395 |
{
|
| 396 |
.name = "coreduo",
|
| 397 |
.level = 10,
|
| 398 |
.family = 6,
|
| 399 |
.model = 14,
|
| 400 |
.stepping = 8,
|
| 401 |
.features = PPRO_FEATURES | CPUID_VME | |
| 402 |
CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_DTS | CPUID_ACPI | |
| 403 |
CPUID_SS | CPUID_HT | CPUID_TM | CPUID_PBE, |
| 404 |
.ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_VMX | |
| 405 |
CPUID_EXT_EST | CPUID_EXT_TM2 | CPUID_EXT_XTPR | CPUID_EXT_PDCM, |
| 406 |
.ext2_features = CPUID_EXT2_NX, |
| 407 |
.xlevel = 0x80000008,
|
| 408 |
.model_id = "Genuine Intel(R) CPU T2600 @ 2.16GHz",
|
| 409 |
}, |
| 410 |
{
|
| 411 |
.name = "486",
|
| 412 |
.level = 1,
|
| 413 |
.family = 4,
|
| 414 |
.model = 0,
|
| 415 |
.stepping = 0,
|
| 416 |
.features = I486_FEATURES, |
| 417 |
.xlevel = 0,
|
| 418 |
}, |
| 419 |
{
|
| 420 |
.name = "pentium",
|
| 421 |
.level = 1,
|
| 422 |
.family = 5,
|
| 423 |
.model = 4,
|
| 424 |
.stepping = 3,
|
| 425 |
.features = PENTIUM_FEATURES, |
| 426 |
.xlevel = 0,
|
| 427 |
}, |
| 428 |
{
|
| 429 |
.name = "pentium2",
|
| 430 |
.level = 2,
|
| 431 |
.family = 6,
|
| 432 |
.model = 5,
|
| 433 |
.stepping = 2,
|
| 434 |
.features = PENTIUM2_FEATURES, |
| 435 |
.xlevel = 0,
|
| 436 |
}, |
| 437 |
{
|
| 438 |
.name = "pentium3",
|
| 439 |
.level = 2,
|
| 440 |
.family = 6,
|
| 441 |
.model = 7,
|
| 442 |
.stepping = 3,
|
| 443 |
.features = PENTIUM3_FEATURES, |
| 444 |
.xlevel = 0,
|
| 445 |
}, |
| 446 |
{
|
| 447 |
.name = "athlon",
|
| 448 |
.level = 2,
|
| 449 |
.vendor1 = CPUID_VENDOR_AMD_1, |
| 450 |
.vendor2 = CPUID_VENDOR_AMD_2, |
| 451 |
.vendor3 = CPUID_VENDOR_AMD_3, |
| 452 |
.family = 6,
|
| 453 |
.model = 2,
|
| 454 |
.stepping = 3,
|
| 455 |
.features = PPRO_FEATURES | CPUID_PSE36 | CPUID_VME | CPUID_MTRR | CPUID_MCA, |
| 456 |
.ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) | CPUID_EXT2_MMXEXT | CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT, |
| 457 |
.xlevel = 0x80000008,
|
| 458 |
/* XXX: put another string ? */
|
| 459 |
.model_id = "QEMU Virtual CPU version " QEMU_VERSION,
|
| 460 |
}, |
| 461 |
{
|
| 462 |
.name = "n270",
|
| 463 |
/* original is on level 10 */
|
| 464 |
.level = 5,
|
| 465 |
.family = 6,
|
| 466 |
.model = 28,
|
| 467 |
.stepping = 2,
|
| 468 |
.features = PPRO_FEATURES | |
| 469 |
CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_VME | CPUID_DTS | |
| 470 |
CPUID_ACPI | CPUID_SS | CPUID_HT | CPUID_TM | CPUID_PBE, |
| 471 |
/* Some CPUs got no CPUID_SEP */
|
| 472 |
.ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_SSSE3 | |
| 473 |
CPUID_EXT_DSCPL | CPUID_EXT_EST | CPUID_EXT_TM2 | CPUID_EXT_XTPR, |
| 474 |
.ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) | CPUID_EXT2_NX, |
| 475 |
.ext3_features = CPUID_EXT3_LAHF_LM, |
| 476 |
.xlevel = 0x8000000A,
|
| 477 |
.model_id = "Intel(R) Atom(TM) CPU N270 @ 1.60GHz",
|
| 478 |
}, |
| 479 |
}; |
| 480 |
|
| 481 |
static int cpu_x86_fill_model_id(char *str) |
| 482 |
{
|
| 483 |
uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0; |
| 484 |
int i;
|
| 485 |
|
| 486 |
for (i = 0; i < 3; i++) { |
| 487 |
host_cpuid(0x80000002 + i, 0, &eax, &ebx, &ecx, &edx); |
| 488 |
memcpy(str + i * 16 + 0, &eax, 4); |
| 489 |
memcpy(str + i * 16 + 4, &ebx, 4); |
| 490 |
memcpy(str + i * 16 + 8, &ecx, 4); |
| 491 |
memcpy(str + i * 16 + 12, &edx, 4); |
| 492 |
} |
| 493 |
return 0; |
| 494 |
} |
| 495 |
|
| 496 |
static int cpu_x86_fill_host(x86_def_t *x86_cpu_def) |
| 497 |
{
|
| 498 |
uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0; |
| 499 |
|
| 500 |
x86_cpu_def->name = "host";
|
| 501 |
host_cpuid(0x0, 0, &eax, &ebx, &ecx, &edx); |
| 502 |
x86_cpu_def->level = eax; |
| 503 |
x86_cpu_def->vendor1 = ebx; |
| 504 |
x86_cpu_def->vendor2 = edx; |
| 505 |
x86_cpu_def->vendor3 = ecx; |
| 506 |
|
| 507 |
host_cpuid(0x1, 0, &eax, &ebx, &ecx, &edx); |
| 508 |
x86_cpu_def->family = ((eax >> 8) & 0x0F) + ((eax >> 20) & 0xFF); |
| 509 |
x86_cpu_def->model = ((eax >> 4) & 0x0F) | ((eax & 0xF0000) >> 12); |
| 510 |
x86_cpu_def->stepping = eax & 0x0F;
|
| 511 |
x86_cpu_def->ext_features = ecx; |
| 512 |
x86_cpu_def->features = edx; |
| 513 |
|
| 514 |
host_cpuid(0x80000000, 0, &eax, &ebx, &ecx, &edx); |
| 515 |
x86_cpu_def->xlevel = eax; |
| 516 |
|
| 517 |
host_cpuid(0x80000001, 0, &eax, &ebx, &ecx, &edx); |
| 518 |
x86_cpu_def->ext2_features = edx; |
| 519 |
x86_cpu_def->ext3_features = ecx; |
| 520 |
cpu_x86_fill_model_id(x86_cpu_def->model_id); |
| 521 |
x86_cpu_def->vendor_override = 0;
|
| 522 |
|
| 523 |
|
| 524 |
/*
|
| 525 |
* Every SVM feature requires emulation support in KVM - so we can't just
|
| 526 |
* read the host features here. KVM might even support SVM features not
|
| 527 |
* available on the host hardware. Just set all bits and mask out the
|
| 528 |
* unsupported ones later.
|
| 529 |
*/
|
| 530 |
x86_cpu_def->svm_features = -1;
|
| 531 |
|
| 532 |
return 0; |
| 533 |
} |
| 534 |
|
| 535 |
static int unavailable_host_feature(struct model_features_t *f, uint32_t mask) |
| 536 |
{
|
| 537 |
int i;
|
| 538 |
|
| 539 |
for (i = 0; i < 32; ++i) |
| 540 |
if (1 << i & mask) { |
| 541 |
fprintf(stderr, "warning: host cpuid %04x_%04x lacks requested"
|
| 542 |
" flag '%s' [0x%08x]\n",
|
| 543 |
f->cpuid >> 16, f->cpuid & 0xffff, |
| 544 |
f->flag_names[i] ? f->flag_names[i] : "[reserved]", mask);
|
| 545 |
break;
|
| 546 |
} |
| 547 |
return 0; |
| 548 |
} |
| 549 |
|
| 550 |
/* best effort attempt to inform user requested cpu flags aren't making
|
| 551 |
* their way to the guest. Note: ft[].check_feat ideally should be
|
| 552 |
* specified via a guest_def field to suppress report of extraneous flags.
|
| 553 |
*/
|
| 554 |
static int check_features_against_host(x86_def_t *guest_def) |
| 555 |
{
|
| 556 |
x86_def_t host_def; |
| 557 |
uint32_t mask; |
| 558 |
int rv, i;
|
| 559 |
struct model_features_t ft[] = {
|
| 560 |
{&guest_def->features, &host_def.features,
|
| 561 |
~0, feature_name, 0x00000000}, |
| 562 |
{&guest_def->ext_features, &host_def.ext_features,
|
| 563 |
~CPUID_EXT_HYPERVISOR, ext_feature_name, 0x00000001},
|
| 564 |
{&guest_def->ext2_features, &host_def.ext2_features,
|
| 565 |
~PPRO_FEATURES, ext2_feature_name, 0x80000000},
|
| 566 |
{&guest_def->ext3_features, &host_def.ext3_features,
|
| 567 |
~CPUID_EXT3_SVM, ext3_feature_name, 0x80000001}};
|
| 568 |
|
| 569 |
cpu_x86_fill_host(&host_def); |
| 570 |
for (rv = 0, i = 0; i < ARRAY_SIZE(ft); ++i) |
| 571 |
for (mask = 1; mask; mask <<= 1) |
| 572 |
if (ft[i].check_feat & mask && *ft[i].guest_feat & mask &&
|
| 573 |
!(*ft[i].host_feat & mask)) {
|
| 574 |
unavailable_host_feature(&ft[i], mask); |
| 575 |
rv = 1;
|
| 576 |
} |
| 577 |
return rv;
|
| 578 |
} |
| 579 |
|
| 580 |
static int cpu_x86_find_by_name(x86_def_t *x86_cpu_def, const char *cpu_model) |
| 581 |
{
|
| 582 |
unsigned int i; |
| 583 |
x86_def_t *def; |
| 584 |
|
| 585 |
char *s = strdup(cpu_model);
|
| 586 |
char *featurestr, *name = strtok(s, ","); |
| 587 |
/* Features to be added*/
|
| 588 |
uint32_t plus_features = 0, plus_ext_features = 0; |
| 589 |
uint32_t plus_ext2_features = 0, plus_ext3_features = 0; |
| 590 |
uint32_t plus_kvm_features = 0, plus_svm_features = 0; |
| 591 |
/* Features to be removed */
|
| 592 |
uint32_t minus_features = 0, minus_ext_features = 0; |
| 593 |
uint32_t minus_ext2_features = 0, minus_ext3_features = 0; |
| 594 |
uint32_t minus_kvm_features = 0, minus_svm_features = 0; |
| 595 |
uint32_t numvalue; |
| 596 |
|
| 597 |
for (def = x86_defs; def; def = def->next)
|
| 598 |
if (!strcmp(name, def->name))
|
| 599 |
break;
|
| 600 |
if (kvm_enabled() && strcmp(name, "host") == 0) { |
| 601 |
cpu_x86_fill_host(x86_cpu_def); |
| 602 |
} else if (!def) { |
| 603 |
goto error;
|
| 604 |
} else {
|
| 605 |
memcpy(x86_cpu_def, def, sizeof(*def));
|
| 606 |
} |
| 607 |
|
| 608 |
plus_kvm_features = ~0; /* not supported bits will be filtered out later */ |
| 609 |
|
| 610 |
add_flagname_to_bitmaps("hypervisor", &plus_features,
|
| 611 |
&plus_ext_features, &plus_ext2_features, &plus_ext3_features, |
| 612 |
&plus_kvm_features, &plus_svm_features); |
| 613 |
|
| 614 |
featurestr = strtok(NULL, ","); |
| 615 |
|
| 616 |
while (featurestr) {
|
| 617 |
char *val;
|
| 618 |
if (featurestr[0] == '+') { |
| 619 |
add_flagname_to_bitmaps(featurestr + 1, &plus_features,
|
| 620 |
&plus_ext_features, &plus_ext2_features, |
| 621 |
&plus_ext3_features, &plus_kvm_features, |
| 622 |
&plus_svm_features); |
| 623 |
} else if (featurestr[0] == '-') { |
| 624 |
add_flagname_to_bitmaps(featurestr + 1, &minus_features,
|
| 625 |
&minus_ext_features, &minus_ext2_features, |
| 626 |
&minus_ext3_features, &minus_kvm_features, |
| 627 |
&minus_svm_features); |
| 628 |
} else if ((val = strchr(featurestr, '='))) { |
| 629 |
*val = 0; val++;
|
| 630 |
if (!strcmp(featurestr, "family")) { |
| 631 |
char *err;
|
| 632 |
numvalue = strtoul(val, &err, 0);
|
| 633 |
if (!*val || *err) {
|
| 634 |
fprintf(stderr, "bad numerical value %s\n", val);
|
| 635 |
goto error;
|
| 636 |
} |
| 637 |
x86_cpu_def->family = numvalue; |
| 638 |
} else if (!strcmp(featurestr, "model")) { |
| 639 |
char *err;
|
| 640 |
numvalue = strtoul(val, &err, 0);
|
| 641 |
if (!*val || *err || numvalue > 0xff) { |
| 642 |
fprintf(stderr, "bad numerical value %s\n", val);
|
| 643 |
goto error;
|
| 644 |
} |
| 645 |
x86_cpu_def->model = numvalue; |
| 646 |
} else if (!strcmp(featurestr, "stepping")) { |
| 647 |
char *err;
|
| 648 |
numvalue = strtoul(val, &err, 0);
|
| 649 |
if (!*val || *err || numvalue > 0xf) { |
| 650 |
fprintf(stderr, "bad numerical value %s\n", val);
|
| 651 |
goto error;
|
| 652 |
} |
| 653 |
x86_cpu_def->stepping = numvalue ; |
| 654 |
} else if (!strcmp(featurestr, "level")) { |
| 655 |
char *err;
|
| 656 |
numvalue = strtoul(val, &err, 0);
|
| 657 |
if (!*val || *err) {
|
| 658 |
fprintf(stderr, "bad numerical value %s\n", val);
|
| 659 |
goto error;
|
| 660 |
} |
| 661 |
x86_cpu_def->level = numvalue; |
| 662 |
} else if (!strcmp(featurestr, "xlevel")) { |
| 663 |
char *err;
|
| 664 |
numvalue = strtoul(val, &err, 0);
|
| 665 |
if (!*val || *err) {
|
| 666 |
fprintf(stderr, "bad numerical value %s\n", val);
|
| 667 |
goto error;
|
| 668 |
} |
| 669 |
if (numvalue < 0x80000000) { |
| 670 |
numvalue += 0x80000000;
|
| 671 |
} |
| 672 |
x86_cpu_def->xlevel = numvalue; |
| 673 |
} else if (!strcmp(featurestr, "vendor")) { |
| 674 |
if (strlen(val) != 12) { |
| 675 |
fprintf(stderr, "vendor string must be 12 chars long\n");
|
| 676 |
goto error;
|
| 677 |
} |
| 678 |
x86_cpu_def->vendor1 = 0;
|
| 679 |
x86_cpu_def->vendor2 = 0;
|
| 680 |
x86_cpu_def->vendor3 = 0;
|
| 681 |
for(i = 0; i < 4; i++) { |
| 682 |
x86_cpu_def->vendor1 |= ((uint8_t)val[i ]) << (8 * i);
|
| 683 |
x86_cpu_def->vendor2 |= ((uint8_t)val[i + 4]) << (8 * i); |
| 684 |
x86_cpu_def->vendor3 |= ((uint8_t)val[i + 8]) << (8 * i); |
| 685 |
} |
| 686 |
x86_cpu_def->vendor_override = 1;
|
| 687 |
} else if (!strcmp(featurestr, "model_id")) { |
| 688 |
pstrcpy(x86_cpu_def->model_id, sizeof(x86_cpu_def->model_id),
|
| 689 |
val); |
| 690 |
} else {
|
| 691 |
fprintf(stderr, "unrecognized feature %s\n", featurestr);
|
| 692 |
goto error;
|
| 693 |
} |
| 694 |
} else if (!strcmp(featurestr, "check")) { |
| 695 |
check_cpuid = 1;
|
| 696 |
} else if (!strcmp(featurestr, "enforce")) { |
| 697 |
check_cpuid = enforce_cpuid = 1;
|
| 698 |
} else {
|
| 699 |
fprintf(stderr, "feature string `%s' not in format (+feature|-feature|feature=xyz)\n", featurestr);
|
| 700 |
goto error;
|
| 701 |
} |
| 702 |
featurestr = strtok(NULL, ","); |
| 703 |
} |
| 704 |
x86_cpu_def->features |= plus_features; |
| 705 |
x86_cpu_def->ext_features |= plus_ext_features; |
| 706 |
x86_cpu_def->ext2_features |= plus_ext2_features; |
| 707 |
x86_cpu_def->ext3_features |= plus_ext3_features; |
| 708 |
x86_cpu_def->kvm_features |= plus_kvm_features; |
| 709 |
x86_cpu_def->svm_features |= plus_svm_features; |
| 710 |
x86_cpu_def->features &= ~minus_features; |
| 711 |
x86_cpu_def->ext_features &= ~minus_ext_features; |
| 712 |
x86_cpu_def->ext2_features &= ~minus_ext2_features; |
| 713 |
x86_cpu_def->ext3_features &= ~minus_ext3_features; |
| 714 |
x86_cpu_def->kvm_features &= ~minus_kvm_features; |
| 715 |
x86_cpu_def->svm_features &= ~minus_svm_features; |
| 716 |
if (check_cpuid) {
|
| 717 |
if (check_features_against_host(x86_cpu_def) && enforce_cpuid)
|
| 718 |
goto error;
|
| 719 |
} |
| 720 |
free(s); |
| 721 |
return 0; |
| 722 |
|
| 723 |
error:
|
| 724 |
free(s); |
| 725 |
return -1; |
| 726 |
} |
| 727 |
|
| 728 |
/* generate a composite string into buf of all cpuid names in featureset
|
| 729 |
* selected by fbits. indicate truncation at bufsize in the event of overflow.
|
| 730 |
* if flags, suppress names undefined in featureset.
|
| 731 |
*/
|
| 732 |
static void listflags(char *buf, int bufsize, uint32_t fbits, |
| 733 |
const char **featureset, uint32_t flags) |
| 734 |
{
|
| 735 |
const char **p = &featureset[31]; |
| 736 |
char *q, *b, bit;
|
| 737 |
int nc;
|
| 738 |
|
| 739 |
b = 4 <= bufsize ? buf + (bufsize -= 3) - 1 : NULL; |
| 740 |
*buf = '\0';
|
| 741 |
for (q = buf, bit = 31; fbits && bufsize; --p, fbits &= ~(1 << bit), --bit) |
| 742 |
if (fbits & 1 << bit && (*p || !flags)) { |
| 743 |
if (*p)
|
| 744 |
nc = snprintf(q, bufsize, "%s%s", q == buf ? "" : " ", *p); |
| 745 |
else
|
| 746 |
nc = snprintf(q, bufsize, "%s[%d]", q == buf ? "" : " ", bit); |
| 747 |
if (bufsize <= nc) {
|
| 748 |
if (b) {
|
| 749 |
memcpy(b, "...", sizeof("...")); |
| 750 |
} |
| 751 |
return;
|
| 752 |
} |
| 753 |
q += nc; |
| 754 |
bufsize -= nc; |
| 755 |
} |
| 756 |
} |
| 757 |
|
| 758 |
/* generate CPU information:
|
| 759 |
* -? list model names
|
| 760 |
* -?model list model names/IDs
|
| 761 |
* -?dump output all model (x86_def_t) data
|
| 762 |
* -?cpuid list all recognized cpuid flag names
|
| 763 |
*/
|
| 764 |
void x86_cpu_list(FILE *f, fprintf_function cpu_fprintf, const char *optarg) |
| 765 |
{
|
| 766 |
unsigned char model = !strcmp("?model", optarg); |
| 767 |
unsigned char dump = !strcmp("?dump", optarg); |
| 768 |
unsigned char cpuid = !strcmp("?cpuid", optarg); |
| 769 |
x86_def_t *def; |
| 770 |
char buf[256]; |
| 771 |
|
| 772 |
if (cpuid) {
|
| 773 |
(*cpu_fprintf)(f, "Recognized CPUID flags:\n");
|
| 774 |
listflags(buf, sizeof (buf), (uint32_t)~0, feature_name, 1); |
| 775 |
(*cpu_fprintf)(f, " f_edx: %s\n", buf);
|
| 776 |
listflags(buf, sizeof (buf), (uint32_t)~0, ext_feature_name, 1); |
| 777 |
(*cpu_fprintf)(f, " f_ecx: %s\n", buf);
|
| 778 |
listflags(buf, sizeof (buf), (uint32_t)~0, ext2_feature_name, 1); |
| 779 |
(*cpu_fprintf)(f, " extf_edx: %s\n", buf);
|
| 780 |
listflags(buf, sizeof (buf), (uint32_t)~0, ext3_feature_name, 1); |
| 781 |
(*cpu_fprintf)(f, " extf_ecx: %s\n", buf);
|
| 782 |
return;
|
| 783 |
} |
| 784 |
for (def = x86_defs; def; def = def->next) {
|
| 785 |
snprintf(buf, sizeof (buf), def->flags ? "[%s]": "%s", def->name); |
| 786 |
if (model || dump) {
|
| 787 |
(*cpu_fprintf)(f, "x86 %16s %-48s\n", buf, def->model_id);
|
| 788 |
} else {
|
| 789 |
(*cpu_fprintf)(f, "x86 %16s\n", buf);
|
| 790 |
} |
| 791 |
if (dump) {
|
| 792 |
memcpy(buf, &def->vendor1, sizeof (def->vendor1));
|
| 793 |
memcpy(buf + 4, &def->vendor2, sizeof (def->vendor2)); |
| 794 |
memcpy(buf + 8, &def->vendor3, sizeof (def->vendor3)); |
| 795 |
buf[12] = '\0'; |
| 796 |
(*cpu_fprintf)(f, |
| 797 |
" family %d model %d stepping %d level %d xlevel 0x%x"
|
| 798 |
" vendor \"%s\"\n",
|
| 799 |
def->family, def->model, def->stepping, def->level, |
| 800 |
def->xlevel, buf); |
| 801 |
listflags(buf, sizeof (buf), def->features, feature_name, 0); |
| 802 |
(*cpu_fprintf)(f, " feature_edx %08x (%s)\n", def->features,
|
| 803 |
buf); |
| 804 |
listflags(buf, sizeof (buf), def->ext_features, ext_feature_name,
|
| 805 |
0);
|
| 806 |
(*cpu_fprintf)(f, " feature_ecx %08x (%s)\n", def->ext_features,
|
| 807 |
buf); |
| 808 |
listflags(buf, sizeof (buf), def->ext2_features, ext2_feature_name,
|
| 809 |
0);
|
| 810 |
(*cpu_fprintf)(f, " extfeature_edx %08x (%s)\n",
|
| 811 |
def->ext2_features, buf); |
| 812 |
listflags(buf, sizeof (buf), def->ext3_features, ext3_feature_name,
|
| 813 |
0);
|
| 814 |
(*cpu_fprintf)(f, " extfeature_ecx %08x (%s)\n",
|
| 815 |
def->ext3_features, buf); |
| 816 |
(*cpu_fprintf)(f, "\n");
|
| 817 |
} |
| 818 |
} |
| 819 |
if (kvm_enabled()) {
|
| 820 |
(*cpu_fprintf)(f, "x86 %16s\n", "[host]"); |
| 821 |
} |
| 822 |
} |
| 823 |
|
| 824 |
int cpu_x86_register (CPUX86State *env, const char *cpu_model) |
| 825 |
{
|
| 826 |
x86_def_t def1, *def = &def1; |
| 827 |
|
| 828 |
memset(def, 0, sizeof(*def)); |
| 829 |
|
| 830 |
if (cpu_x86_find_by_name(def, cpu_model) < 0) |
| 831 |
return -1; |
| 832 |
if (def->vendor1) {
|
| 833 |
env->cpuid_vendor1 = def->vendor1; |
| 834 |
env->cpuid_vendor2 = def->vendor2; |
| 835 |
env->cpuid_vendor3 = def->vendor3; |
| 836 |
} else {
|
| 837 |
env->cpuid_vendor1 = CPUID_VENDOR_INTEL_1; |
| 838 |
env->cpuid_vendor2 = CPUID_VENDOR_INTEL_2; |
| 839 |
env->cpuid_vendor3 = CPUID_VENDOR_INTEL_3; |
| 840 |
} |
| 841 |
env->cpuid_vendor_override = def->vendor_override; |
| 842 |
env->cpuid_level = def->level; |
| 843 |
if (def->family > 0x0f) |
| 844 |
env->cpuid_version = 0xf00 | ((def->family - 0x0f) << 20); |
| 845 |
else
|
| 846 |
env->cpuid_version = def->family << 8;
|
| 847 |
env->cpuid_version |= ((def->model & 0xf) << 4) | ((def->model >> 4) << 16); |
| 848 |
env->cpuid_version |= def->stepping; |
| 849 |
env->cpuid_features = def->features; |
| 850 |
env->cpuid_ext_features = def->ext_features; |
| 851 |
env->cpuid_ext2_features = def->ext2_features; |
| 852 |
env->cpuid_ext3_features = def->ext3_features; |
| 853 |
env->cpuid_xlevel = def->xlevel; |
| 854 |
env->cpuid_kvm_features = def->kvm_features; |
| 855 |
env->cpuid_svm_features = def->svm_features; |
| 856 |
if (!kvm_enabled()) {
|
| 857 |
env->cpuid_features &= TCG_FEATURES; |
| 858 |
env->cpuid_ext_features &= TCG_EXT_FEATURES; |
| 859 |
env->cpuid_ext2_features &= (TCG_EXT2_FEATURES |
| 860 |
#ifdef TARGET_X86_64
|
| 861 |
| CPUID_EXT2_SYSCALL | CPUID_EXT2_LM |
| 862 |
#endif
|
| 863 |
); |
| 864 |
env->cpuid_ext3_features &= TCG_EXT3_FEATURES; |
| 865 |
env->cpuid_svm_features &= TCG_SVM_FEATURES; |
| 866 |
} |
| 867 |
{
|
| 868 |
const char *model_id = def->model_id; |
| 869 |
int c, len, i;
|
| 870 |
if (!model_id)
|
| 871 |
model_id = "";
|
| 872 |
len = strlen(model_id); |
| 873 |
for(i = 0; i < 48; i++) { |
| 874 |
if (i >= len)
|
| 875 |
c = '\0';
|
| 876 |
else
|
| 877 |
c = (uint8_t)model_id[i]; |
| 878 |
env->cpuid_model[i >> 2] |= c << (8 * (i & 3)); |
| 879 |
} |
| 880 |
} |
| 881 |
return 0; |
| 882 |
} |
| 883 |
|
| 884 |
#if !defined(CONFIG_USER_ONLY)
|
| 885 |
/* copy vendor id string to 32 bit register, nul pad as needed
|
| 886 |
*/
|
| 887 |
static void cpyid(const char *s, uint32_t *id) |
| 888 |
{
|
| 889 |
char *d = (char *)id; |
| 890 |
char i;
|
| 891 |
|
| 892 |
for (i = sizeof (*id); i--; ) |
| 893 |
*d++ = *s ? *s++ : '\0';
|
| 894 |
} |
| 895 |
|
| 896 |
/* interpret radix and convert from string to arbitrary scalar,
|
| 897 |
* otherwise flag failure
|
| 898 |
*/
|
| 899 |
#define setscalar(pval, str, perr) \
|
| 900 |
{ \
|
| 901 |
char *pend; \
|
| 902 |
unsigned long ul; \ |
| 903 |
\ |
| 904 |
ul = strtoul(str, &pend, 0); \
|
| 905 |
*str && !*pend ? (*pval = ul) : (*perr = 1); \
|
| 906 |
} |
| 907 |
|
| 908 |
/* map cpuid options to feature bits, otherwise return failure
|
| 909 |
* (option tags in *str are delimited by whitespace)
|
| 910 |
*/
|
| 911 |
static void setfeatures(uint32_t *pval, const char *str, |
| 912 |
const char **featureset, int *perr) |
| 913 |
{
|
| 914 |
const char *p, *q; |
| 915 |
|
| 916 |
for (q = p = str; *p || *q; q = p) {
|
| 917 |
while (iswhite(*p))
|
| 918 |
q = ++p; |
| 919 |
while (*p && !iswhite(*p))
|
| 920 |
++p; |
| 921 |
if (!*q && !*p)
|
| 922 |
return;
|
| 923 |
if (!lookup_feature(pval, q, p, featureset)) {
|
| 924 |
fprintf(stderr, "error: feature \"%.*s\" not available in set\n",
|
| 925 |
(int)(p - q), q);
|
| 926 |
*perr = 1;
|
| 927 |
return;
|
| 928 |
} |
| 929 |
} |
| 930 |
} |
| 931 |
|
| 932 |
/* map config file options to x86_def_t form
|
| 933 |
*/
|
| 934 |
static int cpudef_setfield(const char *name, const char *str, void *opaque) |
| 935 |
{
|
| 936 |
x86_def_t *def = opaque; |
| 937 |
int err = 0; |
| 938 |
|
| 939 |
if (!strcmp(name, "name")) { |
| 940 |
def->name = strdup(str); |
| 941 |
} else if (!strcmp(name, "model_id")) { |
| 942 |
strncpy(def->model_id, str, sizeof (def->model_id));
|
| 943 |
} else if (!strcmp(name, "level")) { |
| 944 |
setscalar(&def->level, str, &err) |
| 945 |
} else if (!strcmp(name, "vendor")) { |
| 946 |
cpyid(&str[0], &def->vendor1);
|
| 947 |
cpyid(&str[4], &def->vendor2);
|
| 948 |
cpyid(&str[8], &def->vendor3);
|
| 949 |
} else if (!strcmp(name, "family")) { |
| 950 |
setscalar(&def->family, str, &err) |
| 951 |
} else if (!strcmp(name, "model")) { |
| 952 |
setscalar(&def->model, str, &err) |
| 953 |
} else if (!strcmp(name, "stepping")) { |
| 954 |
setscalar(&def->stepping, str, &err) |
| 955 |
} else if (!strcmp(name, "feature_edx")) { |
| 956 |
setfeatures(&def->features, str, feature_name, &err); |
| 957 |
} else if (!strcmp(name, "feature_ecx")) { |
| 958 |
setfeatures(&def->ext_features, str, ext_feature_name, &err); |
| 959 |
} else if (!strcmp(name, "extfeature_edx")) { |
| 960 |
setfeatures(&def->ext2_features, str, ext2_feature_name, &err); |
| 961 |
} else if (!strcmp(name, "extfeature_ecx")) { |
| 962 |
setfeatures(&def->ext3_features, str, ext3_feature_name, &err); |
| 963 |
} else if (!strcmp(name, "xlevel")) { |
| 964 |
setscalar(&def->xlevel, str, &err) |
| 965 |
} else {
|
| 966 |
fprintf(stderr, "error: unknown option [%s = %s]\n", name, str);
|
| 967 |
return (1); |
| 968 |
} |
| 969 |
if (err) {
|
| 970 |
fprintf(stderr, "error: bad option value [%s = %s]\n", name, str);
|
| 971 |
return (1); |
| 972 |
} |
| 973 |
return (0); |
| 974 |
} |
| 975 |
|
| 976 |
/* register config file entry as x86_def_t
|
| 977 |
*/
|
| 978 |
static int cpudef_register(QemuOpts *opts, void *opaque) |
| 979 |
{
|
| 980 |
x86_def_t *def = qemu_mallocz(sizeof (x86_def_t));
|
| 981 |
|
| 982 |
qemu_opt_foreach(opts, cpudef_setfield, def, 1);
|
| 983 |
def->next = x86_defs; |
| 984 |
x86_defs = def; |
| 985 |
return (0); |
| 986 |
} |
| 987 |
|
| 988 |
void cpu_clear_apic_feature(CPUX86State *env)
|
| 989 |
{
|
| 990 |
env->cpuid_features &= ~CPUID_APIC; |
| 991 |
} |
| 992 |
|
| 993 |
#endif /* !CONFIG_USER_ONLY */ |
| 994 |
|
| 995 |
/* register "cpudef" models defined in configuration file. Here we first
|
| 996 |
* preload any built-in definitions
|
| 997 |
*/
|
| 998 |
void x86_cpudef_setup(void) |
| 999 |
{
|
| 1000 |
int i;
|
| 1001 |
|
| 1002 |
for (i = 0; i < ARRAY_SIZE(builtin_x86_defs); ++i) { |
| 1003 |
builtin_x86_defs[i].next = x86_defs; |
| 1004 |
builtin_x86_defs[i].flags = 1;
|
| 1005 |
x86_defs = &builtin_x86_defs[i]; |
| 1006 |
} |
| 1007 |
#if !defined(CONFIG_USER_ONLY)
|
| 1008 |
qemu_opts_foreach(qemu_find_opts("cpudef"), cpudef_register, NULL, 0); |
| 1009 |
#endif
|
| 1010 |
} |
| 1011 |
|
| 1012 |
static void get_cpuid_vendor(CPUX86State *env, uint32_t *ebx, |
| 1013 |
uint32_t *ecx, uint32_t *edx) |
| 1014 |
{
|
| 1015 |
*ebx = env->cpuid_vendor1; |
| 1016 |
*edx = env->cpuid_vendor2; |
| 1017 |
*ecx = env->cpuid_vendor3; |
| 1018 |
|
| 1019 |
/* sysenter isn't supported on compatibility mode on AMD, syscall
|
| 1020 |
* isn't supported in compatibility mode on Intel.
|
| 1021 |
* Normally we advertise the actual cpu vendor, but you can override
|
| 1022 |
* this if you want to use KVM's sysenter/syscall emulation
|
| 1023 |
* in compatibility mode and when doing cross vendor migration
|
| 1024 |
*/
|
| 1025 |
if (kvm_enabled() && ! env->cpuid_vendor_override) {
|
| 1026 |
host_cpuid(0, 0, NULL, ebx, ecx, edx); |
| 1027 |
} |
| 1028 |
} |
| 1029 |
|
| 1030 |
void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
|
| 1031 |
uint32_t *eax, uint32_t *ebx, |
| 1032 |
uint32_t *ecx, uint32_t *edx) |
| 1033 |
{
|
| 1034 |
/* test if maximum index reached */
|
| 1035 |
if (index & 0x80000000) { |
| 1036 |
if (index > env->cpuid_xlevel)
|
| 1037 |
index = env->cpuid_level; |
| 1038 |
} else {
|
| 1039 |
if (index > env->cpuid_level)
|
| 1040 |
index = env->cpuid_level; |
| 1041 |
} |
| 1042 |
|
| 1043 |
switch(index) {
|
| 1044 |
case 0: |
| 1045 |
*eax = env->cpuid_level; |
| 1046 |
get_cpuid_vendor(env, ebx, ecx, edx); |
| 1047 |
break;
|
| 1048 |
case 1: |
| 1049 |
*eax = env->cpuid_version; |
| 1050 |
*ebx = (env->cpuid_apic_id << 24) | 8 << 8; /* CLFLUSH size in quad words, Linux wants it. */ |
| 1051 |
*ecx = env->cpuid_ext_features; |
| 1052 |
*edx = env->cpuid_features; |
| 1053 |
if (env->nr_cores * env->nr_threads > 1) { |
| 1054 |
*ebx |= (env->nr_cores * env->nr_threads) << 16;
|
| 1055 |
*edx |= 1 << 28; /* HTT bit */ |
| 1056 |
} |
| 1057 |
break;
|
| 1058 |
case 2: |
| 1059 |
/* cache info: needed for Pentium Pro compatibility */
|
| 1060 |
*eax = 1;
|
| 1061 |
*ebx = 0;
|
| 1062 |
*ecx = 0;
|
| 1063 |
*edx = 0x2c307d;
|
| 1064 |
break;
|
| 1065 |
case 4: |
| 1066 |
/* cache info: needed for Core compatibility */
|
| 1067 |
if (env->nr_cores > 1) { |
| 1068 |
*eax = (env->nr_cores - 1) << 26; |
| 1069 |
} else {
|
| 1070 |
*eax = 0;
|
| 1071 |
} |
| 1072 |
switch (count) {
|
| 1073 |
case 0: /* L1 dcache info */ |
| 1074 |
*eax |= 0x0000121;
|
| 1075 |
*ebx = 0x1c0003f;
|
| 1076 |
*ecx = 0x000003f;
|
| 1077 |
*edx = 0x0000001;
|
| 1078 |
break;
|
| 1079 |
case 1: /* L1 icache info */ |
| 1080 |
*eax |= 0x0000122;
|
| 1081 |
*ebx = 0x1c0003f;
|
| 1082 |
*ecx = 0x000003f;
|
| 1083 |
*edx = 0x0000001;
|
| 1084 |
break;
|
| 1085 |
case 2: /* L2 cache info */ |
| 1086 |
*eax |= 0x0000143;
|
| 1087 |
if (env->nr_threads > 1) { |
| 1088 |
*eax |= (env->nr_threads - 1) << 14; |
| 1089 |
} |
| 1090 |
*ebx = 0x3c0003f;
|
| 1091 |
*ecx = 0x0000fff;
|
| 1092 |
*edx = 0x0000001;
|
| 1093 |
break;
|
| 1094 |
default: /* end of info */ |
| 1095 |
*eax = 0;
|
| 1096 |
*ebx = 0;
|
| 1097 |
*ecx = 0;
|
| 1098 |
*edx = 0;
|
| 1099 |
break;
|
| 1100 |
} |
| 1101 |
break;
|
| 1102 |
case 5: |
| 1103 |
/* mwait info: needed for Core compatibility */
|
| 1104 |
*eax = 0; /* Smallest monitor-line size in bytes */ |
| 1105 |
*ebx = 0; /* Largest monitor-line size in bytes */ |
| 1106 |
*ecx = CPUID_MWAIT_EMX | CPUID_MWAIT_IBE; |
| 1107 |
*edx = 0;
|
| 1108 |
break;
|
| 1109 |
case 6: |
| 1110 |
/* Thermal and Power Leaf */
|
| 1111 |
*eax = 0;
|
| 1112 |
*ebx = 0;
|
| 1113 |
*ecx = 0;
|
| 1114 |
*edx = 0;
|
| 1115 |
break;
|
| 1116 |
case 9: |
| 1117 |
/* Direct Cache Access Information Leaf */
|
| 1118 |
*eax = 0; /* Bits 0-31 in DCA_CAP MSR */ |
| 1119 |
*ebx = 0;
|
| 1120 |
*ecx = 0;
|
| 1121 |
*edx = 0;
|
| 1122 |
break;
|
| 1123 |
case 0xA: |
| 1124 |
/* Architectural Performance Monitoring Leaf */
|
| 1125 |
*eax = 0;
|
| 1126 |
*ebx = 0;
|
| 1127 |
*ecx = 0;
|
| 1128 |
*edx = 0;
|
| 1129 |
break;
|
| 1130 |
case 0xD: |
| 1131 |
/* Processor Extended State */
|
| 1132 |
if (!(env->cpuid_ext_features & CPUID_EXT_XSAVE)) {
|
| 1133 |
*eax = 0;
|
| 1134 |
*ebx = 0;
|
| 1135 |
*ecx = 0;
|
| 1136 |
*edx = 0;
|
| 1137 |
break;
|
| 1138 |
} |
| 1139 |
if (kvm_enabled()) {
|
| 1140 |
*eax = kvm_arch_get_supported_cpuid(env, 0xd, count, R_EAX);
|
| 1141 |
*ebx = kvm_arch_get_supported_cpuid(env, 0xd, count, R_EBX);
|
| 1142 |
*ecx = kvm_arch_get_supported_cpuid(env, 0xd, count, R_ECX);
|
| 1143 |
*edx = kvm_arch_get_supported_cpuid(env, 0xd, count, R_EDX);
|
| 1144 |
} else {
|
| 1145 |
*eax = 0;
|
| 1146 |
*ebx = 0;
|
| 1147 |
*ecx = 0;
|
| 1148 |
*edx = 0;
|
| 1149 |
} |
| 1150 |
break;
|
| 1151 |
case 0x80000000: |
| 1152 |
*eax = env->cpuid_xlevel; |
| 1153 |
*ebx = env->cpuid_vendor1; |
| 1154 |
*edx = env->cpuid_vendor2; |
| 1155 |
*ecx = env->cpuid_vendor3; |
| 1156 |
break;
|
| 1157 |
case 0x80000001: |
| 1158 |
*eax = env->cpuid_version; |
| 1159 |
*ebx = 0;
|
| 1160 |
*ecx = env->cpuid_ext3_features; |
| 1161 |
*edx = env->cpuid_ext2_features; |
| 1162 |
|
| 1163 |
/* The Linux kernel checks for the CMPLegacy bit and
|
| 1164 |
* discards multiple thread information if it is set.
|
| 1165 |
* So dont set it here for Intel to make Linux guests happy.
|
| 1166 |
*/
|
| 1167 |
if (env->nr_cores * env->nr_threads > 1) { |
| 1168 |
uint32_t tebx, tecx, tedx; |
| 1169 |
get_cpuid_vendor(env, &tebx, &tecx, &tedx); |
| 1170 |
if (tebx != CPUID_VENDOR_INTEL_1 ||
|
| 1171 |
tedx != CPUID_VENDOR_INTEL_2 || |
| 1172 |
tecx != CPUID_VENDOR_INTEL_3) {
|
| 1173 |
*ecx |= 1 << 1; /* CmpLegacy bit */ |
| 1174 |
} |
| 1175 |
} |
| 1176 |
break;
|
| 1177 |
case 0x80000002: |
| 1178 |
case 0x80000003: |
| 1179 |
case 0x80000004: |
| 1180 |
*eax = env->cpuid_model[(index - 0x80000002) * 4 + 0]; |
| 1181 |
*ebx = env->cpuid_model[(index - 0x80000002) * 4 + 1]; |
| 1182 |
*ecx = env->cpuid_model[(index - 0x80000002) * 4 + 2]; |
| 1183 |
*edx = env->cpuid_model[(index - 0x80000002) * 4 + 3]; |
| 1184 |
break;
|
| 1185 |
case 0x80000005: |
| 1186 |
/* cache info (L1 cache) */
|
| 1187 |
*eax = 0x01ff01ff;
|
| 1188 |
*ebx = 0x01ff01ff;
|
| 1189 |
*ecx = 0x40020140;
|
| 1190 |
*edx = 0x40020140;
|
| 1191 |
break;
|
| 1192 |
case 0x80000006: |
| 1193 |
/* cache info (L2 cache) */
|
| 1194 |
*eax = 0;
|
| 1195 |
*ebx = 0x42004200;
|
| 1196 |
*ecx = 0x02008140;
|
| 1197 |
*edx = 0;
|
| 1198 |
break;
|
| 1199 |
case 0x80000008: |
| 1200 |
/* virtual & phys address size in low 2 bytes. */
|
| 1201 |
/* XXX: This value must match the one used in the MMU code. */
|
| 1202 |
if (env->cpuid_ext2_features & CPUID_EXT2_LM) {
|
| 1203 |
/* 64 bit processor */
|
| 1204 |
/* XXX: The physical address space is limited to 42 bits in exec.c. */
|
| 1205 |
*eax = 0x00003028; /* 48 bits virtual, 40 bits physical */ |
| 1206 |
} else {
|
| 1207 |
if (env->cpuid_features & CPUID_PSE36)
|
| 1208 |
*eax = 0x00000024; /* 36 bits physical */ |
| 1209 |
else
|
| 1210 |
*eax = 0x00000020; /* 32 bits physical */ |
| 1211 |
} |
| 1212 |
*ebx = 0;
|
| 1213 |
*ecx = 0;
|
| 1214 |
*edx = 0;
|
| 1215 |
if (env->nr_cores * env->nr_threads > 1) { |
| 1216 |
*ecx |= (env->nr_cores * env->nr_threads) - 1;
|
| 1217 |
} |
| 1218 |
break;
|
| 1219 |
case 0x8000000A: |
| 1220 |
if (env->cpuid_ext3_features & CPUID_EXT3_SVM) {
|
| 1221 |
*eax = 0x00000001; /* SVM Revision */ |
| 1222 |
*ebx = 0x00000010; /* nr of ASIDs */ |
| 1223 |
*ecx = 0;
|
| 1224 |
*edx = env->cpuid_svm_features; /* optional features */
|
| 1225 |
} else {
|
| 1226 |
*eax = 0;
|
| 1227 |
*ebx = 0;
|
| 1228 |
*ecx = 0;
|
| 1229 |
*edx = 0;
|
| 1230 |
} |
| 1231 |
break;
|
| 1232 |
default:
|
| 1233 |
/* reserved values: zero */
|
| 1234 |
*eax = 0;
|
| 1235 |
*ebx = 0;
|
| 1236 |
*ecx = 0;
|
| 1237 |
*edx = 0;
|
| 1238 |
break;
|
| 1239 |
} |
| 1240 |
} |