xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

KVM: x86: Invert emulation re-execute behavior to make it opt-in

Browse Source 
Re-execution of an instruction after emulation decode failure is
intended to be used only when emulating shadow page accesses.  Invert
the flag to make allowing re-execution opt-in since that behavior is
by far in the minority.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
This commit is contained in:
Sean Christopherson
2018-08-23 13:56:48 -07:00
committed by Radim Krčmář
parent 35be0aded7
commit 8065dbd1ee
3 changed files with 5 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/kvm/x86.c
View File

@@ -5870,7 +5870,7 @@ static bool reexecute_instruction(struct kvm_vcpu *vcpu, gva_t cr2,
gpa_t gpa = cr2;
kvm_pfn_t pfn;
if (emulation_type & EMULTYPE_NO_REEXECUTE)
if (!(emulation_type & EMULTYPE_ALLOW_REEXECUTE))
return false;
if (!vcpu->arch.mmu.direct_map) {