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- 22 May, 2011 40 commits
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Takuya Yoshikawa authored
In addition, one comma at the end of a statement is replaced with a semicolon. Signed-off-by:
Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Takuya Yoshikawa authored
This way, we can avoid checking the user space address many times when we read the guest memory. Although we can do the same for write if we check which slots are writable, we do not care write now: reading the guest memory happens more often than writing. [avi: change VERIFY_READ to VERIFY_WRITE] Signed-off-by:
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Takuya Yoshikawa authored
When we optimized walk_addr_generic() by not using the generic guest memory reader, we replaced copy_from_user() with get_user(): commit e30d2a170506830d5eef5e9d7990c5aedf1b0a51 KVM: MMU: Optimize guest page table walk commit 15e2ac9a43d4d7d08088e404fddf2533a8e7d52e KVM: MMU: Fix 64-bit paging breakage on x86_32 But as Andi pointed out later, copy_from_user() does the same as get_user() as long as we give a constant size to it. So we use copy_from_user() to clean up the code. The only, noticeable, regression introduced by this is 64-bit gpte reading on x86_32 hosts needed for PAE guests. But this can be mitigated by implementing 8-byte get_user() for x86_32, if needed. Signed-off-by:
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Scott Wood authored
Signed-off-by:
Scott Wood <scottwood@freescale.com> Signed-off-by:
Alexander Graf <agraf@suse.de>
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Scott Wood authored
Linux doesn't use USPRG0 (now renamed VRSAVE in the architecture, even when Altivec isn't involved), but a guest might. Signed-off-by:
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Stuart Yoder authored
Convert to microseconds when displaying (with fix from Bharat Bhushan <Bharat.Bhushan@freescale.com>). This reduces rounding error with large quantities of short exits. Signed-off-by:
Stuart Yoder <stuart.yoder@freescale.com> Signed-off-by:
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Scott Wood authored
The exit type setting for mfspr/mtspr is moved from 44x to toplevel SPR emulation. This enables it on e500, and makes sure that all SPRs are covered. Exit accounting for tlbwe and tlbsx is added to e500. Signed-off-by:
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Scott Wood authored
Return the actual host SVR for now, as we already do for PVR. Eventually we may support Qemu overriding PVR/SVR if the situation is appropriate, once we implement KVM_SET_SREGS on e500. Signed-off-by:
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Avi Kivity authored
Since the emulator now checks segment limits and access rights, it generates a lot more accesses to the vmcs segment fields. Undo some of the performance hit by cacheing those fields in a read-only cache (the entire cache is invalidated on any write, or on guest exit). Signed-off-by: -
Avi Kivity authored
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 authored
Avoids a VMREAD. Signed-off-by: -
Joe Perches authored
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 <joe@perches.com> Acked-by:
Joerg Roedel <joerg.roedel@amd.com> Signed-off-by:
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Takuya Yoshikawa authored
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:
Jan Kiszka <jan.kiszka@web.de> Signed-off-by:
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Jeff Mahoney authored
This patch fixes some sparse warning about "dubious one-bit signed bitfield." Signed-off-by:
Jeff Mahoney <jeffm@suse.com> Originally-by:
Jan Blunck <jblunck@suse.de> Signed-off-by:
Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by:
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BrillyWu@viatech.com.cn authored
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 <brillywu@viatech.com.cn> Signed-off-by:
Kary Jin <karyjin@viatech.com.cn> Signed-off-by:
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Gleb Natapov authored
Signed-off-by:
Gleb Natapov <gleb@redhat.com> Signed-off-by:
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Gleb Natapov authored
mmio_index should be taken into account when copying data from userspace. Signed-off-by:
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Gleb Natapov authored
Signed-off-by:
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Gleb Natapov authored
Remove unused variable mmio_fault_cr2. Signed-off-by:
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Avi Kivity authored
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 authored
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: -
Takuya Yoshikawa authored
For this, em_pushf/popf() are introduced. Signed-off-by:
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Takuya Yoshikawa authored
For this, emulate_pusha/popa() are converted to em_pusha/popa(). Signed-off-by:
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Takuya Yoshikawa authored
In addition, the RET emulation is changed to call em_pop() to remove the pop_instruction label. Signed-off-by:
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Takuya Yoshikawa authored
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:
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Takuya Yoshikawa authored
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:
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Avi Kivity authored
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 authored
Signed-off-by: -
Avi Kivity authored
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 authored
Signed-off-by: -
Randy Dunlap authored
arch/x86/kvm/emulate.c:2598: warning: integer constant is too large for 'long' type Signed-off-by:
Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by:
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Clemens Noss authored
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 <cnoss@gmx.de> Signed-off-by:
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Liu Yuan authored
Function ioapic_debug() in the ioapic_deliver() misnames one filed by reference. This patch correct it. Signed-off-by:
Liu Yuan <tailai.ly@taobao.com> Signed-off-by:
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Roedel, Joerg authored
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: stable@kernel.org Signed-off-by:
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Avi Kivity authored
No longer used. Signed-off-by: -
Avi Kivity authored
We can use container_of() instead. Signed-off-by: -
Avi Kivity authored
Instead of calling kvm_emulate_wbinvd() directly. Signed-off-by: -
Avi Kivity authored
Artificial, but needed to remove direct calls to KVM. Signed-off-by: -
Avi Kivity authored
Instead of reaching into vcpu internals. Signed-off-by: -
Avi Kivity authored
Removing direct calls to KVM. Signed-off-by:
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