History | View | Annotate | Download (117.2 kB)
Disable phsyical memory handling in userspace emulation.
Code to handle physical memory access is not meaningful in usrmode emulation,so disable it.
Signed-off-by: Paul Brook <paul@codesourcery.com>
Add tb_page_addr_t
The page tracking code in exec.c is used by both userspace and systememulation. Userspace emulation uses it to track virtual pages, andsystem emulation to track ram pages. Introduce a new type to hold thiskind of address.
Fix last page errors in page_check_range and page_set_flags.
The addr < end comparison prevents iterating over the lastpage in the guest address space; an iteration based onlength avoids this problem.
At the same time, assert that the given address is in the...
Implement multi-level page tables.
Define L1_MAP_ADDR_SPACE_BITS to be either the virtual address size(in user mode) or physical address size (in system mode), and usethat to size l1_map. This rewrites page_find_alloc, page_flush_tb,and walk_memory_regions....
Move TARGET_PHYS_ADDR_SPACE_BITS to target-*/cpu.h.
Removes a set of ifdefs from exec.c.
Introduce TARGET_VIRT_ADDR_SPACE_BITS for all targets otherthan Alpha. This will be used for page_find_alloc, which issupposed to be using virtual addresses in the first place....
KVM: Rework VCPU state writeback API
This grand cleanup drops all reset and vmsave/load relatedsynchronization points in favor of four(!) generic hooks:
- cpu_synchronize_all_states in qemu_savevm_state_complete (initial sync from kernel before vmsave)...
Add option to use file backed guest memory
Port qemu-kvm's -mem-path and -mem-prealloc options. These are usefulfor backing guest memory with huge pages via hugetlbfs.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>CC: john cooper <john.cooper@redhat.com>
Avoid tlb_set_page in userspace emulation
tlb_set_page isn't meaningful for userspace emulation, so remove it.
Move subpage definitions
Move definitions for subpage handling into !CONFIG_USER_ONLY code.
Remove bogus cpu_physical_memory_rw
Userspace doesn't have physical memory, so cpu_physical_memory_rwmakes no sense. This is only used to implement cpu_memory_rw_debug, sojust implement that directly instead.
Remove l1_phys_map from userspace emulation
Userspace emulation doesn't have a physical address space, sol1_phys_map makes no sense. This code is never actually used, so don'ttry and build it.
Fix userspace breakpoint invalidation
Remove bogus virtual->physical address translation inbreakpoint_invalidate for userspace emulation.
qemu: memory notifiers
This adds notifiers for phys memory changes: a set of callbacks thatvhost can register and update kernel accordingly. Down the road, kvmcode can be switched to use these as well, instead of calling kvm codedirectly from exec.c as is done now....
kvm: move kvm to use memory notifiers
remove direct kvm calls from exec.c, makekvm use memory notifiers framework instead.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>Acked-by: Avi Kivity <avi@redhat.com>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Merge remote branch 'qemu-kvm/uq/master' into staging-tmp
fix locking error with current_tb
Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
linux-user: remove signal handler before calling abort()
Qemu may hang in host_signal_handler after qemu has done aseppuku with cpu_abort(). But at this stage we are not reallyinterested in target process coredump anymore, so unregisterhost_signal_handler to die grafefully....
exec.c: dead assignments
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
kvm: Flush coalesced MMIO buffer periodly
The default action of coalesced MMIO is, cache the writing in buffer, until:1. The buffer is full.2. Or the exit to QEmu due to other reasons.
But this would result in a very late writing in some condition.1. The each time write to MMIO content is small....
win32: pair qemu_memalign() with qemu_vfree()
Win32 suffers from a very big memory leak when dealing with SCSI devices.Each read/write request allocates memory with qemu_memalign (ieVirtualAlloc) but frees it with qemu_free (ie free).Pair all qemu_memalign() calls with qemu_vfree() to prevent such leaks....
linux-user: enable tb unlinking when compiled with NPTL
Fixes receiving signals when guest code is being executed in a tightloop. For an example, try interrupting the following code with ctrl-c.
http://nchipin.kos.to/test-loop.c
The tight loop is ofcourse brainless, but it is also exactly how the waitpid* testcases...
Fix win32 log file location
/tmp doesn't exist under win32. Ease the pain of win32 development slightly.
From: Juha Riihimäki <juha.riihimaki@nokia.com>Signed-off-by: Riku Voipio <riku.voipio@nokia.com>Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Give a error when running out of iomem areas.
The limit of iomem areas is quite low. Without thedebug print, it is quite hard to figure out why moredevices are not getting registered.
Signed-off-by: Riku Voipio <riku.voipio@nokia.com>Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Allocate physical memory in low virtual address space
KVM on S390x requires the virtual address space of the guest's RAM to bewithin the first 256GB.
The general direction I'd like to see KVM on S390 move is that this requirementis losened, but for now that's what we're stuck with....
Add support for GNU/kFreeBSD
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
ksm support
Call MADV_MERGEABLE on guest memory allocations. MADV_MERGABLE will beavailable starting in Linux 2.6.32. This system call registers a region ofvirtual address space with Linux as a candidate for transparent memorysharing.
Patchworks-ID: 35447...
fix comment on cpu_register_physical_memory_offset
We don't require full pages in cpu_register_physical_memory,except for RAM.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
vmstate: remove const from pre_save() functions
Signed-off-by: Juan Quintela <quintela@redhat.com>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
vmstate: add version_id argument to post_load
Revert "Get rid of _t suffix"
In the very least, a change like this requires discussion on the list.
The naming convention is goofy and it causes a massive merge problem. Somethinglike this must be presented on the list first so people can provide input...
Get rid of _t suffix
Some not so obvious bits, slirp and Xen were left alone for the timebeing.
Signed-off-by: malc <av1474@comtv.ru>
Fix sys-queue.h conflict for good
Problem: Our file sys-queue.h is a copy of the BSD file, but there aresome additions and it's not entirely compatible. Because of that, there havebeen conflicts with system headers on BSD systems. Some hacks have beenintroduced in the commits 15cc9235840a22c289edbe064a9b3c19c5f49896,...
vmstate: port cpu_comon
microblaze: Trap on bus accesses to unmapped areas.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
kvm: Simplify cpu_synchronize_state()
cpu_synchronize_state() is a little unreadable since the 'modified'argument isn't self-explanatory. Simplify it by making it alwayssynchronize the kernel state into qemu, and automatically flush theregisters back to the kernel if they've been synchronized on this...
Make CPURead/WriteFunc structure 'const'
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Unbreak large mem support by removing kqemu
kqemu introduces a number of restrictions on the i386 target. The worst is thatit prevents large memory from working in the default build.
Furthermore, kqemu is fundamentally flawed in a number of ways. It relies on...
Fix Sparse warnings: "Using plain integer as NULL pointer"
rename USE_NPTL to CONFIG_USE_NPTL
Remove setvbuf(<handle>, NULL, _IOLBF, 0) calls for Win32
On Win32 the setvbuf function requires the last parameter to be size between 2 and INT_MAX bytes, so the calls always failed. Since the whole point of the calls is to set line-buffered mode for the file handle and that's not supported on Win32 anyway, conditionally remove them....
Fix most warnings (errors with -Werror) when debugging is enabled
I used the following command to enable debugging:perl -p -i -e 's/^\/\/#define DEBUG/#define DEBUG/g' * /* *//*
tlb flush cleanup
Use static empty variable s_cputlb_empty_entry to clear entries,also reset addend member when clearing entries.This helps running with valgrind/memcheck
Signed-off-by: igor.v.kovalenko@gmail.com
--Kind regards,Igor V. KovalenkoSigned-off-by: Anthony Liguori <aliguori@us.ibm.com>
Update to a hopefully more future proof FSF address
cpu_unregister_map_client: fix memory leak.
fix memory leak in cpu_unregister_map_client() and cpu_notify_map_clients().
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Win32: Reduce section alignment for Windows.
Maximum alignment for Win32 is 16, so don't tryto set it to 32. Otherwise the compiler complains:
exec.c:102: warning: alignment of 'code_gen_prologue'is greater than maximum object file alignment. Using 16...
exec.c: remove unnecessary #if NB_MMU_MODES
remove unnecessary #if NB_MMU_MODES by using loop.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>Acked-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
provide cpu_index to env mapping
There are some people interested in, given a cpu number,pick its CPUState. KVM is an example, although not yet in tree.This patch provides a way of doing that.
Signed-off-by: Glauber Costa <glommer@redhat.com>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Rearrange io_mem_init()
Move io_mem_init() downwards to avoid a forward declaration. No code change.
Signed-off-by: Avi Kivity <avi@redhat.com>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Remove io_index argument from cpu_register_io_memory()
The parameter is always zero except when registering the three internalio regions (ROM, unassigned, notdirty). Remove the parameter to reducethe API's power, thus facilitating future change.
Signed-off-by: Avi Kivity <avi@redhat.com>...
linux-user: implemented ELF coredump support for ARM target
When target process is killed with signal (such signal thatshould dump core) a coredump file is created. This file issimilar than coredump generated by Linux (there are few exceptionsthough)....
fix gdbstub support for multiple threads in usermode, v3
When debugging multi-threaded programs, QEMU's gdb stub would report thecorrect number of threads (the qfThreadInfo and qsThreadInfo packets).However, the stub was unable to actually switch between threads (the T...
kvm: Rework dirty bitmap synchronization
Extend kvm_physical_sync_dirty_bitmap() so that is can sync acrossmultiple slots. Useful for updating the whole dirty log duringmigration. Moreover, properly pass down errors the whole call chain.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>...
kvm: Add missing bits to support live migration
This patch adds the missing hooks to allow live migration in KVM mode.It adds proper synchronization before/after saving/restoring the VCPUstates (note: PPC is untested), hooks intocpu_physical_memory_set_dirty_tracking() to enable dirty memory logging...
Fix typos in comments in exec.c
This patch fixes several typos in comments in exec.c:
longet -> longer recommanded -> recommended ajustments -> adjustments inconsistancies -> inconsistencies phsical -> physical positionned -> positioned...
kvm: Avoid COW if KVM MMU is asynchronous
Avi Kivity wrote:
Suggest wrapping in a function and hiding it deep inside kvm-all.c.
Done in v2:
---------->
If the KVM MMU is asynchronous (kernel does not support MMU_NOTIFIER),we have to avoid COW for the guest memory. Otherwise we risk serious...
Remove cpu_get_io_memory_{read,write}.
qemu: introduce qemu_cpu_kick (Marcelo Tosatti)
To notify cpu of pending interrupt.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7243 c046a42c-6fe2-441c-8c8c-71466251a162
added -numa cmdline parameter parser (Andre Przywara)
adds a -numa command line parameter and sets a QEMU global array withthe memory sizes. The CPU-to-node assignemnt is written into theCPUState. If no specific values for memory and CPUs are given,all resources will be split equally across all nodes....
kqemu: merge CONFIG_KQEMU and USE_KQEMU
Basically a recursive ":%s/USE_KQEMU/CONFIG_KQEMU/g".
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7189 c046a42c-6fe2-441c-8c8c-71466251a162
Implement dynamic guest ram allocation.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7088 c046a42c-6fe2-441c-8c8c-71466251a162
Remove code phys_ram_base uses.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7085 c046a42c-6fe2-441c-8c8c-71466251a162
Cleanup SPARC/TCX framebuffer allocation.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7059 c046a42c-6fe2-441c-8c8c-71466251a162
Allow 5 mmu indexes.
This is necessary for alpha because it has 4 protection levels and pal mode.
Signed-off-by: Tristan Gingold <gingold@adacore.com>Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7028 c046a42c-6fe2-441c-8c8c-71466251a162
Fix some win32 compile warnings
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6984 c046a42c-6fe2-441c-8c8c-71466251a162
ROM write access for debugging (Jan Kiszka)
Enhance cpu_memory_rw_debug so that it can write even to ROM regions.This allows to modify ROM via gdb (I see no point in denying this to theuser), and it will enable us to drop kvm_patch_opcode_byte().
Credits go to Avi for suggesting this....
Delete some unused macros detected with -Wp,-Wunused-macros use
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6856 c046a42c-6fe2-441c-8c8c-71466251a162
Guest debugging support for KVM (Jan Kiszka)
This is a backport of the guest debugging support for the KVMaccelerator that is now part of the KVM tree. It implements the reworkedKVM kernel API for guest debugging (KVM_CAP_SET_GUEST_DEBUG) which isnot yet part of any mainline kernel but will probably be 2.6.30 stuff....
Use a dedicated function to request exit from execution loop
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6762 c046a42c-6fe2-441c-8c8c-71466251a162
Clear CPU_INTERRUPT_EXIT on VM load
CPU_INTERRUPT_EXIT is not set anymore in env->interrupt_request sincerevision 6728. Make sure the bit is cleared on VM load.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6756 c046a42c-6fe2-441c-8c8c-71466251a162
Support for DragonFly BSD (Hasso Tepper)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6746 c046a42c-6fe2-441c-8c8c-71466251a162
Sparse fixes: NULL use, header order, ANSI prototypes, static
Fix Sparse warnings: * use NULL instead of plain 0 * rearrange header include order to avoid redefining types accidentally * ANSIfy SLIRP * avoid "restrict" keyword * add static
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6736 c046a42c-6fe2-441c-8c8c-71466251a162
The _exit syscall is used for both thread termination in NPTL applications,and process termination in legacy applications. Try to guess which we wantbased on the presence of multiple threads.
Also implement locking when modifying the CPU list.
Signed-off-by: Paul Brook <paul@codesourcery.com>...
Fix race condition on access to env->interrupt_request
env->interrupt_request is accessed as the bit level from both main codeand signal handler, making a race condition possible even on CISC CPU.This causes freeze of QEMU under high load when running the dyntick...
Fix unassigned region offsets.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6639 c046a42c-6fe2-441c-8c8c-71466251a162
Fix cpu_physical_memory_rw() for 64-bit I/O accesses
KVM uses cpu_physical_memory_rw() to access the I/O devices. When aread or write with a length of 8-byte is requested, it is split into 24-byte accesses.
This has been broken in revision 5849. After this revision, only the...
qemu: add cpu_unregister_io_memory and make io mem table index dynamic (Marcelo Tosatti)
So drivers can clear their mem io table entries on exit back to unassignedstate.
Also make the io mem index allocation dynamic.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>...
toplevel: remove error handling from qemu_malloc() callers (Avi Kivity)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6531 c046a42c-6fe2-441c-8c8c-71466251a162
Log reset events (Jan Kiszka)
Original idea&code by Kevin Wolf, split-up in two patches and added morearchs.
This patch introduces a flag to log CPU resets. Useful for tracingunexpected resets (such as those triggered by x86 triple faults).
Add map client retry notification (Avi Kivity)
The target memory mapping API may fail if the bounce buffer resourcesare exhausted. Add a notification mechanism to allow clients to retrythe mapping operation when resources become available again.
Add target memory mapping API (Avi Kivity)
Devices accessing large amounts of memory (as with DMA) will wish to obtaina pointer to guest memory rather than access it indirectly viacpu_physical_memory_rw(). Add a new API to convert target addresses tohost pointers....
global s/fflush(logfile)/qemu_log_flush()/ (Eduardo Habkost)
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6339 c046a42c-6fe2-441c-8c8c-71466251a162
Convert references to logfile/loglevel to use qemu_log*() macros
This is a large patch that changes all occurrences of logfile/loglevelglobal variables to use the new qemu_log*() macros.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>...
Adopt cpu_copy to new breakpoint API (Jan Kaszka)
Latest changes to the cpu_breakpoint/watchpoint API broke cpu_copy. Thispatch fixes it by cloning the breakpoint and watchpoint listsappropriately.
Thanks to Lionel Landwerlin for pointing out.
Signed-off-by: Jan Kiszka <jan.kiszka@web.de>...
Update FSF address in GPL/LGPL boilerplate
The attached patch updates the FSF address in the GPL/LGPL boilerplatein most GPL/LGPLed files, and also in COPYING.LIB.
Signed-off-by: Stuart Brady <stuart.brady@gmail.com>Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>...
CRIS: Remove CRIS specific do_unassigned_access.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6140 c046a42c-6fe2-441c-8c8c-71466251a162
KVM: Coalesced MMIO support
MMIO exits are more expensive in KVM or Xen than in QEMU because theyinvolve, at least, privilege transitions. However, MMIO writeoperations can be effectively batched if those writes do not have sideeffects.
Good examples of this include VGA pixel operations when in a planar...
linux-user: Fix h2g usage in page_find_alloc
Paul's comment on my first approach to fix the h2g usage inpage_find_alloc finally open my eyes about what the code is actuallysupposed to do:
With the help of h2g_valid we can no cleanly check if a freshly allocate...
Cosmetic cleanups to previous patch.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5852 c046a42c-6fe2-441c-8c8c-71466251a162
Change MMIO callbacks to use offsets, not absolute addresses.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5849 c046a42c-6fe2-441c-8c8c-71466251a162
Fix the comment added in r5844.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5846 c046a42c-6fe2-441c-8c8c-71466251a162
arm: Reserve code buffer in memory range reachable for pc-relative branch.
Unfortunately this range is so narrow that I'm not sure if it makes moresense to always use memory load to pc kind of branch instead.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5844 c046a42c-6fe2-441c-8c8c-71466251a162
Use sys-queue.h for break/watchpoint managment (Jan Kiszka)
This switches cpu_break/watchpoint_* to TAILQ wrappers, simplifying thecode and also fixing a use after release issue incpu_break/watchpoint_remove_all.
vga optimization (Glauber Costa)
Hypervisors like KVM perform badly while doing mmio ona loop, because it'll generate an exit on each access.This is the case with VGA, which results in very badperformance.
In this patch, we map the linear frame buffer as RAM,...
Fix Windows build
ENOBUFS is not defined on Win32. Use ENOMEM instead which is more portable.
This was reported by Hervé Poussineau.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5749 c046a42c-6fe2-441c-8c8c-71466251a162
Introduce BP_CPU as a breakpoint type (Jan Kiszka)
Add another breakpoint/watchpoint type to BP_GDB: BP_CPU. This type isintended for hardware-assisted break/watchpoint emulations like the x86architecture requires.
To keep the highest priority for BP_GDB breakpoints, this type is...
Introduce BP_WATCHPOINT_HIT flag (Jan Kiszka)
When one watchpoint is hit, others might have triggered as well. Tosupport users of the watchpoint API which need to detect such cases,the BP_WATCHPOINT_HIT flag is introduced and maintained.
Remove premature memop TB terminations (Jan Kiszka)
Now that we can properly restore the pc on watchpoint hits, there is nomore need for prematurely terminating TBs if watchpoints are present.Remove all related bits.
Restore pc on watchpoint hits (Jan Kiszka)
In order to provide accurate information about the triggeringinstruction, this patch adds the required bits to restore the pc if theaccess happened inside a TB. With the BP_STOP_BEFORE_ACCESS flag, thewatchpoint user can control if the debug trap should be issued on or...
Respect length of watchpoints (Jan Kiszka)
This adds length support for watchpoints. To keep things simple, onlyaligned watchpoints are accepted.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
...
Refactor and enhance break/watchpoint API (Jan Kiszka)
This patch prepares the QEMU cpu_watchpoint/breakpoint API to allow thesucceeding enhancements this series comes with.
First of all, it overcomes MAX_BREAKPOINTS/MAX_WATCHPOINTS by switchingto dynamically allocated data structures that are kept in linked lists....