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| author | Nadav Amit <namit@cs.technion.ac.il> | 2014-11-02 11:54:52 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-11-07 15:44:07 +0100 |
| commit | 9d88fca71a99a65c37cbfe481b4aa4e91a27ff13 (patch) | |
| tree | 9e698aa68ff7b8cbabcdcda3b3d1ac46d86636b3 /arch/x86/include | |
| parent | 0fcc207c66a7cff024b05367b86d70d742072d61 (diff) | |
| download | talos-op-linux-9d88fca71a99a65c37cbfe481b4aa4e91a27ff13.tar.gz talos-op-linux-9d88fca71a99a65c37cbfe481b4aa4e91a27ff13.zip | |
KVM: x86: MOV to CR3 can set bit 63
Although Intel SDM mentions bit 63 is reserved, MOV to CR3 can have bit 63 set.
As Intel SDM states in section 4.10.4 "Invalidation of TLBs and
Paging-Structure Caches": " MOV to CR3. ... If CR4.PCIDE = 1 and bit 63 of the
instruction’s source operand is 0 ..."
In other words, bit 63 is not reserved. KVM emulator currently consider bit 63
as reserved. Fix it.
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 904535fe825e..dc932d388c43 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -51,6 +51,7 @@ | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG)) #define CR3_L_MODE_RESERVED_BITS 0xFFFFFF0000000000ULL +#define CR3_PCID_INVD (1UL << 63) #define CR4_RESERVED_BITS \ (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\ | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \ |
