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2011-05-22KVM: x86 emulator: consolidate segment accessorsAvi Kivity3-93/+83
Instead of separate accessors for the segment selector and cached descriptor, use one accessor for both. This simplifies the code somewhat. Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: VMX: Avoid reading %rip unnecessarily when handling exceptionsAvi Kivity1-1/+1
Avoids a VMREAD. Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: SVM: Make dump_vmcb static, reduce textJoe Perches1-82/+94
dump_vmcb isn't used outside this module, make it static. Shrink text and object by ~1% by standardizing formats. $ size arch/x86/kvm/svm.o* text data bss dec hex filename 52910 580 10072 63562 f84a arch/x86/kvm/svm.o.new 53563 580 10072 64215 fad7 arch/x86/kvm/svm.o.old Signed-off-by: Joe Perches <[email protected]> Acked-by: Joerg Roedel <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: MMU: Fix 64-bit paging breakage on x86_32Takuya Yoshikawa1-1/+15
Fix regression introduced by commit e30d2a170506830d5eef5e9d7990c5aedf1b0a51 KVM: MMU: Optimize guest page table walk On x86_32, get_user() does not support 64-bit values and we fail to build KVM at the point of 64-bit paging. This patch fixes this by using get_user() twice for that condition. Signed-off-by: Takuya Yoshikawa <[email protected]> Reported-by: Jan Kiszka <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: ia64: fix sparse warningsJeff Mahoney1-13/+13
This patch fixes some sparse warning about "dubious one-bit signed bitfield." Signed-off-by: Jeff Mahoney <[email protected]> Originally-by: Jan Blunck <[email protected]> Signed-off-by: Jan Blunck <[email protected]> Acked-by: Xiantao Zhang <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: Add CPUID support for VIA CPU[email protected]1-0/+40
The CPUIDs for Centaur are added, and then the features of PadLock hardware engine on VIA CPU, such as "ace", "ace_en" and so on, can be passed into the kvm guest. Signed-off-by: Brilly Wu <[email protected]> Signed-off-by: Kary Jin <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: call cache_all_regs() only once during instruction emulationGleb Natapov1-8/+6
Signed-off-by: Gleb Natapov <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: Fix compound mmioGleb Natapov1-1/+2
mmio_index should be taken into account when copying data from userspace. Signed-off-by: Gleb Natapov <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: emulator: Propagate fault in far jump emulationGleb Natapov1-1/+2
Signed-off-by: Gleb Natapov <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: mmio_fault_cr2 is not usedGleb Natapov2-2/+1
Remove unused variable mmio_fault_cr2. Signed-off-by: Gleb Natapov <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: consolidate group handlingAvi Kivity1-40/+40
Move all groups into a single field and handle them in a single place. This saves bits when we add more group types (3 bits -> 7 groups types). Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: MMU: Add unlikely() annotations to walk_addr_generic()Avi Kivity1-13/+15
walk_addr_generic() is a hot path and is also hard for the cpu to predict - some of the parameters (fetch_fault in particular) vary wildly from invocation to invocation. Add unlikely() annotations where appropriate; all walk failures are considered unlikely, as are cases where we have to mark the accessed or dirty bit, as they are slow paths both in kvm and on real processors. Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: Use opcode::execute for PUSHF/POPF (9C/9D)Takuya Yoshikawa1-11/+20
For this, em_pushf/popf() are introduced. Signed-off-by: Takuya Yoshikawa <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: Use opcode::execute for PUSHA/POPA (60/61)Takuya Yoshikawa1-11/+5
For this, emulate_pusha/popa() are converted to em_pusha/popa(). Signed-off-by: Takuya Yoshikawa <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: Use opcode::execute for POP reg (58-5F)Takuya Yoshikawa1-6/+10
In addition, the RET emulation is changed to call em_pop() to remove the pop_instruction label. Signed-off-by: Takuya Yoshikawa <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: Use opcode::execute for Group 1, CMPS and SCASTakuya Yoshikawa1-72/+89
The following instructions are changed to use opcode::execute. Group 1 (80-83) ADD (00-05), OR (08-0D), ADC (10-15), SBB (18-1D), AND (20-25), SUB (28-2D), XOR (30-35), CMP (38-3D) CMPS (A6-A7), SCAS (AE-AF) The last two do the same as CMP in the emulator, so em_cmp() is used. Signed-off-by: Takuya Yoshikawa <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: MMU: Optimize guest page table walkTakuya Yoshikawa1-3/+20
This patch optimizes the guest page table walk by using get_user() instead of copy_from_user(). With this patch applied, paging64_walk_addr_generic() has become about 0.5us to 1.0us faster on my Phenom II machine with NPT on. Signed-off-by: Takuya Yoshikawa <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: SVM: Get rid of x86_intercept_map::validAvi Kivity2-8/+5
By reserving 0 as an invalid x86_intercept_stage, we no longer need to store a valid flag in x86_intercept_map. Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: Use opcode::execute for 0F 01 opcodeAvi Kivity1-43/+13
Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: Don't force #UD for 0F 01 /5Avi Kivity1-3/+0
While it isn't defined, no need to force a #UD. If it becomes defined in the future this can cause wierd problems for the guest. Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: move 0F 01 sub-opcodes into their own functionsAvi Kivity1-47/+99
Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: fix const value warning on i386 in svm insn RAX checkRandy Dunlap1-1/+1
arch/x86/kvm/emulate.c:2598: warning: integer constant is too large for 'long' type Signed-off-by: Randy Dunlap <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: avoid calling wbinvd() macroClemens Noss1-1/+1
Commit 0b56652e33c72092956c651ab6ceb9f0ad081153 fails to build: CC [M] arch/x86/kvm/emulate.o arch/x86/kvm/emulate.c: In function 'x86_emulate_insn': arch/x86/kvm/emulate.c:4095:25: error: macro "wbinvd" passed 1 arguments, but takes just 0 arch/x86/kvm/emulate.c:4095:3: warning: statement with no effect make[2]: *** [arch/x86/kvm/emulate.o] Error 1 make[1]: *** [arch/x86/kvm] Error 2 make: *** [arch/x86] Error 2 Work around this for now. Signed-off-by: Clemens Noss <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: ioapic: Fix an error field referenceLiu Yuan1-1/+1
Function ioapic_debug() in the ioapic_deliver() misnames one filed by reference. This patch correct it. Signed-off-by: Liu Yuan <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: MMU: Make cmpxchg_gpte aware of nesting tooRoedel, Joerg1-7/+23
This patch makes the cmpxchg_gpte() function aware of the difference between l1-gfns and l2-gfns when nested virtualization is in use. This fixes a potential data-corruption problem in the l1-guest and makes the code work correct (at least as correct as the hardware which is emulated in this code) again. Cc: [email protected] Signed-off-by: Joerg Roedel <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: drop x86_emulate_ctxt::vcpuAvi Kivity2-3/+0
No longer used. Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: Avoid using x86_emulate_ctxt.vcpuAvi Kivity1-1/+1
We can use container_of() instead. Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: add new ->wbinvd() callbackAvi Kivity3-1/+8
Instead of calling kvm_emulate_wbinvd() directly. Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: add ->fix_hypercall() callbackAvi Kivity4-5/+8
Artificial, but needed to remove direct calls to KVM. Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: add new ->halt() callbackAvi Kivity3-1/+8
Instead of reaching into vcpu internals. Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: make emulate_invlpg() an emulator callbackAvi Kivity4-5/+5
Removing direct calls to KVM. Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: emulate CLTS internallyAvi Kivity3-9/+11
Avoid using ctxt->vcpu; we can do everything with ->get_cr() and ->set_cr(). A side effect is that we no longer activate the fpu on emulated CLTS; but that should be very rare. Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: Replace calls to is_pae() and is_paging with ->get_cr()Avi Kivity1-2/+2
Avoid use of ctxt->vcpu. Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: drop use of is_long_mode()Avi Kivity1-7/+12
Requires ctxt->vcpu, which is to be abolished. Replace with open calls to get_msr(). Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: add and use new callbacks set_idt(), set_gdt()Avi Kivity4-24/+21
Replacing direct calls to realmode_lgdt(), realmode_lidt(). Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: avoid using ctxt->vcpu in check_perm() callbacksAvi Kivity1-2/+2
Unneeded for register access. Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: drop vcpu argument from intercept callbackAvi Kivity3-4/+4
Making the emulator caller agnostic. Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: drop vcpu argument from cr/dr/cpl/msr callbacksAvi Kivity3-59/+73
Making the emulator caller agnostic. Signed-off-by: Avi Kivity <[email protected]>
2011-05-22KVM: x86 emulator: drop vcpu argument from segment/gdt/idt callbacksAvi Kivity3-83/+90
Making the emulator caller agnostic. [Takuya Yoshikawa: fix typo leading to LDT failures] Signed-off-by: Takuya Yoshikawa <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-05-22Merge branch 'perf/core' of ↵Ingo Molnar13-47/+138
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into perf/urgent Conflicts: tools/perf/builtin-top.c Semantic conflict: util/include/linux/list.h # fix prefetch.h removal fallout Signed-off-by: Ingo Molnar <[email protected]>
2011-05-22Merge branch 'topic/hda' into for-linusTakashi Iwai15-3276/+4107
2011-05-22Merge branch 'topic/asoc' into for-linusTakashi Iwai112-2596/+15215
2011-05-22Merge branch 'topic/misc' into for-linusTakashi Iwai48-1297/+1722
2011-05-22Merge branch 'topic/lola' into for-linusTakashi Iwai10-0/+3429
2011-05-22Merge branch 'flushing' into for-linusJames Bottomley8-124/+182
2011-05-22Merge branch 'topic/asoc' of ↵Mark Brown13-23/+24
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 into for-2.6.40
2011-05-22ASoC: core: Don't set "(null)" as a driver nameJarkko Nikula1-1/+1
Commit 22de71b ("ASoC: core - allow ASoC more flexible machine name") writes "(null)" to driver name string in struct snd_card if card->driver_name is NULL. This causes segmentation faults with some user space ALSA utilities like aplay and arecord. Fix this by using the card->name if no driver name is specified. Signed-off-by: Jarkko Nikula <[email protected]> Acked-by: Liam Girdwood <[email protected]> Signed-off-by: Mark Brown <[email protected]>
2011-05-22perf tools: Propagate event parse error handlingFrederic Weisbecker4-11/+33
Better handle event parsing error by propagating the details in upper layers or by dumping some failure message. So that the user knows he has some crazy events in the batch. Signed-off-by: Frederic Weisbecker <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Stephane Eranian <[email protected]>
2011-05-22perf tools: Robustify dynamic sample content fetchFrederic Weisbecker1-0/+26
Ensure the size of the dynamic fields such as callchains or raw events don't overlap the whole event boundaries. This prevents from dereferencing junk if the given size of the callchain goes too eager. Reported-by: Linus Torvalds <[email protected]> Reported-by: Ingo Molnar <[email protected]> Signed-off-by: Frederic Weisbecker <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Stephane Eranian <[email protected]>
2011-05-22perf tools: Pre-check sample size before parsingFrederic Weisbecker7-5/+41
Check that the total size of the sample fields having a fixed size do not exceed the one of the whole event. This robustifies the sample parsing. Signed-off-by: Frederic Weisbecker <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Stephane Eranian <[email protected]>
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