| Message ID | 20230509135110.1664-1-yan.y.zhao@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | KVM: x86/mmu: refine memtype related mmu zap | expand |
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index e7f78fe79b32..ed1e3939bd05 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -942,7 +942,7 @@ void kvm_post_set_cr0(struct kvm_vcpu *vcpu, unsigned long old_cr0, unsigned lon if (((cr0 ^ old_cr0) & X86_CR0_CD) && kvm_arch_has_noncoherent_dma(vcpu->kvm) && !kvm_check_has_quirk(vcpu->kvm, KVM_X86_QUIRK_CD_NW_CLEARED)) - kvm_zap_gfn_range(vcpu->kvm, 0, ~0ULL); + kvm_zap_gfn_for_memtype(vcpu->kvm, gpa_to_gfn(0), gpa_to_gfn(~0ULL)); } EXPORT_SYMBOL_GPL(kvm_post_set_cr0);
Call new helper kvm_zap_gfn_for_memtype() to skip zap mmu if EPT is not enabled. Guest CR0_CD value will affect memory type of EPT leaf entry with noncoherent DMA present. But mmu zap is not necessary if EPT is not enabled. Suggested-by: Chao Gao <chao.gao@intel.com> Signed-off-by: Yan Zhao <yan.y.zhao@intel.com> --- arch/x86/kvm/x86.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)