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

KVM: x86: Check kvm_rebooting in kvm_spurious_fault()

Browse Source 
Explicitly check kvm_rebooting in kvm_spurious_fault() prior to invoking
BUG(), as opposed to assuming the caller has already done so.  Letting
kvm_spurious_fault() be called "directly" will allow VMX to better
optimize its low level assembly flows.

As a happy side effect, kvm_spurious_fault() no longer needs to be
marked as a dead end since it doesn't unconditionally BUG().

Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson
2019-07-19 13:41:06 -07:00
committed by Paolo Bonzini
parent 90a48843a1
commit 4b526de50e
3 changed files with 3 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
arch/x86/kvm/x86.c
View File

@@ -360,7 +360,8 @@ EXPORT_SYMBOL_GPL(kvm_set_apic_base);
asmlinkage __visible void kvm_spurious_fault(void)
{
/* Fault while not rebooting. We want the trace. */
BUG();
if (!kvm_rebooting)
BUG();
}
EXPORT_SYMBOL_GPL(kvm_spurious_fault);