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

kvm: x86: Add ability to skip TLB flush when switching CR3

Browse Source 
Remove the implicit flush from the set_cr3 handlers, so that the
callers are able to decide whether to flush the TLB or not.

Signed-off-by: Junaid Shahid <junaids@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Junaid Shahid
2018-06-27 14:59:12 -07:00
committed by Paolo Bonzini
parent 50c28f21d0
commit afe828d1de
4 changed files with 2 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

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

@@ -4070,6 +4070,7 @@ static bool fast_cr3_switch(struct kvm_vcpu *vcpu, gpa_t new_cr3,
kvm_make_request(KVM_REQ_LOAD_CR3, vcpu);
kvm_make_request(KVM_REQ_MMU_SYNC, vcpu);
kvm_x86_ops->tlb_flush(vcpu, true);
__clear_sp_write_flooding_count(
page_header(mmu->root_hpa));
@@ -4851,6 +4852,7 @@ int kvm_mmu_load(struct kvm_vcpu *vcpu)
if (r)
goto out;
kvm_mmu_load_cr3(vcpu);
kvm_x86_ops->tlb_flush(vcpu, true);
out:
return r;
}