- 01 Aug, 2010 40 commits
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Marcelo Tosatti authored
Signed-off-by:Marcelo Tosatti <mtosatti@redhat.com>
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Dongxiao Xu authored
SDM suggests VMXON should be called before VMPTRLD, and VMXOFF should be called after doing VMCLEAR. Therefore in vmm coexistence case, we should firstly call VMXON before any VMCS operation, and then call VMXOFF after the operation is done. Signed-off-by:
Dongxiao Xu <dongxiao.xu@intel.com> Signed-off-by:
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Dongxiao Xu authored
Originally VMCLEAR/VMPTRLD is called on vcpu migration. To support hosted VMM coexistance, VMCLEAR is executed on vcpu schedule out, and VMPTRLD is executed on vcpu schedule in. This could also eliminate the IPI when doing VMCLEAR. Signed-off-by:
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Dongxiao Xu authored
Do some preparations for vmm coexistence support. Signed-off-by:
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Dongxiao Xu authored
Define vmcs_load() and kvm_cpu_vmxon() to avoid direct call of asm code. Also move VMXE bit operation out of kvm_cpu_vmxoff(). Signed-off-by:
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Gui Jianfeng authored
There's no member "cr4_nxe" in struct kvm_mmu_page_role, it names "nxe" now. Update mmu document. Signed-off-by:
Gui Jianfeng <guijianfeng@cn.fujitsu.com> Signed-off-by:
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Avi Kivity authored
We drop the mmu lock between freeing memory and allocating the roots; this allows some other vcpu to sneak in and allocate memory. While the race is benign (resulting only in temporary overallocation, not oom) it is simple and easy to fix by moving the freeing close to the allocation. Signed-off-by:
Avi Kivity <avi@redhat.com> Signed-off-by:
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Gleb Natapov authored
Do not kill VM when instruction emulation fails. Inject #UD and report failure to userspace instead. Userspace may choose to reenter guest if vcpu is in userspace (cpl == 3) in which case guest OS will kill offending process and continue running. Signed-off-by:
Gleb Natapov <gleb@redhat.com> Signed-off-by:
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Avi Kivity authored
Signed-off-by: -
Avi Kivity authored
Signed-off-by: -
Gui Jianfeng authored
Currently, kvm_mmu_zap_page() returning the number of freed children sp. This might confuse the caller, because caller don't know the actual freed number. Let's make kvm_mmu_zap_page() return the number of pages it actually freed. Signed-off-by:
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Gui Jianfeng authored
Fix a debug output error in walk_addr Signed-off-by:
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Gui Jianfeng authored
Sometime cmpxchg_gpte doesn't modify gpte, in such case, don't mark page table page as dirty. Signed-off-by:
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Joerg Roedel authored
This patch enables setting of efer bit 13 which is allowed in all SVM capable processors. This is necessary for the SLES11 version of Xen 4.0 to boot with nested svm. Signed-off-by:
Joerg Roedel <joerg.roedel@amd.com> Signed-off-by:
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Joerg Roedel authored
This patch adds a function to dump the vmcb into the kernel log and calls it after a failed vmrun to ease debugging. Signed-off-by:
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Avi Kivity authored
KVM_REQ_KICK poisons vcpu->requests by having a bit set during normal operation. This causes the fast path check for a clear vcpu->requests to fail all the time, triggering tons of atomic operations. Fix by replacing KVM_REQ_KICK with a vcpu->guest_mode atomic. Signed-off-by: -
Gleb Natapov authored
Return exception as a result of instruction emulation and handle injection in KVM code. Signed-off-by:
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Gleb Natapov authored
Emulator shouldn't access vcpu directly. Signed-off-by:
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Gleb Natapov authored
Emulator shouldn't access vcpu directly. Signed-off-by:
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Gleb Natapov authored
emulate_sysexit() should use shadowed registers copy instead of looking into vcpu state directly. Signed-off-by:
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Gleb Natapov authored
Removes the need for set_flags() callback. Signed-off-by:
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Gleb Natapov authored
Return new RIP as part of instruction emulation result instead of updating KVM's RIP from x86 emulator code. Signed-off-by:
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Gleb Natapov authored
If emulation failed return immediately. Signed-off-by:
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Gleb Natapov authored
Return error to x86 emulator instead of injection exception behind its back. Signed-off-by:
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Gleb Natapov authored
It is not called directly outside of the file it's defined in anymore. Signed-off-by:
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Gleb Natapov authored
Currently emulator returns -1 when emulation failed or IO is needed. Caller tries to guess whether emulation failed by looking at other variables. Make it easier for caller to recognise error condition by always returning -1 in case of failure. For this new emulator internal return value X86EMUL_IO_NEEDED is introduced. It is used to distinguish between error condition (which returns X86EMUL_UNHANDLEABLE) and condition that requires IO exit to userspace to continue emulation. Signed-off-by:
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Gleb Natapov authored
Fill in run->mmio details in (read|write)_emulated function just like pio does. There is no point in filling only vcpu fields there just to copy them into vcpu->run a little bit later. Signed-off-by:
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Gleb Natapov authored
Currently X86EMUL_PROPAGATE_FAULT, X86EMUL_RETRY_INSTR and X86EMUL_CMPXCHG_FAILED have the same value so caller cannot distinguish why function such as emulator_cmpxchg_emulated() (which can return both X86EMUL_PROPAGATE_FAULT and X86EMUL_CMPXCHG_FAILED) failed. Signed-off-by:
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Gleb Natapov authored
Make (get|set)_dr() callback return error if it fails instead of injecting exception behind emulator's back. Signed-off-by:
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Gleb Natapov authored
Make set_cr() callback return error if it fails instead of injecting #GP behind emulator's back. Signed-off-by:
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Gleb Natapov authored
Use callbacks from x86_emulate_ops to access segments instead of calling into kvm directly. Signed-off-by:
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Gleb Natapov authored
On VMX it is expensive to call get_cached_descriptor() just to get segment base since multiple vmcs_reads are done instead of only one. Introduce new call back get_cached_segment_base() for efficiency. Signed-off-by:
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Gleb Natapov authored
Add (set|get)_msr callbacks to x86_emulate_ops instead of calling them directly. Signed-off-by:
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Gleb Natapov authored
Add (set|get)_dr callbacks to x86_emulate_ops instead of calling them directly. Signed-off-by:
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Gleb Natapov authored
ljmp/lcall instruction operand contains address and segment. It can be 10 bytes long. Currently we decode it as two different operands. Fix it by introducing new kind of operand that can hold entire far address. Signed-off-by:
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Gleb Natapov authored
Make it more explicit what we are checking for. Signed-off-by:
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Gleb Natapov authored
Dst operand is already initialized during decoding stage. No need to reinitialize. Signed-off-by:
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Gleb Natapov authored
This instruction does not need generic decoding for its dst operand. Signed-off-by:
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Gleb Natapov authored
Introduce read cache which is needed for instruction that require more then one exit to userspace. After returning from userspace the instruction will be re-executed with cached read value. Signed-off-by:
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Avi Kivity authored
cr0.ts may change between entries, so we copy cr0 to HOST_CR0 before each entry. That is slow, so instead, set HOST_CR0 to have TS set unconditionally (which is a safe value), and issue a clts() just before exiting vcpu context if the task indeed owns the fpu. Saves ~50 cycles/exit. Signed-off-by:
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