diff mbox series

[2/7] kvm: x86/mmu: Use kvm_mmu_invalidate_gva() in kvm_mmu_invpcid_gva()

Message ID 20230105095848.6061-3-jiangshanlai@gmail.com
State New
Headers
Series kvm: x86/mmu: Share the same code to invalidate each vTLB entry |

Commit Message

Lai Jiangshan Jan. 5, 2023, 9:58 a.m. UTC 
  From: Lai Jiangshan <jiangshan.ljs@antgroup.com>

Use kvm_mmu_invalidate_gva() instead open calls to mmu->invlpg().

No functional change intended.

Signed-off-by: Lai Jiangshan <jiangshan.ljs@antgroup.com>
---
 arch/x86/kvm/mmu/mmu.c | 21 +++++++--------------
 1 file changed, 7 insertions(+), 14 deletions(-)

Comments

Sean Christopherson Feb. 2, 2023, 1:21 a.m. UTC | #1 
On Thu, Jan 05, 2023, Lai Jiangshan wrote:
> From: Lai Jiangshan <jiangshan.ljs@antgroup.com>
> 
> Use kvm_mmu_invalidate_gva() instead open calls to mmu->invlpg().
> 
> No functional change intended.
> 
> Signed-off-by: Lai Jiangshan <jiangshan.ljs@antgroup.com>
> ---
>  arch/x86/kvm/mmu/mmu.c | 21 +++++++--------------
>  1 file changed, 7 insertions(+), 14 deletions(-)
> 
> diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
> index 90339b71bd56..b0e7ac6d4e88 100644
> --- a/arch/x86/kvm/mmu/mmu.c
> +++ b/arch/x86/kvm/mmu/mmu.c
> @@ -5742,27 +5742,20 @@ EXPORT_SYMBOL_GPL(kvm_mmu_invlpg);
>  void kvm_mmu_invpcid_gva(struct kvm_vcpu *vcpu, gva_t gva, unsigned long pcid)
>  {
>  	struct kvm_mmu *mmu = vcpu->arch.mmu;
> -	bool tlb_flush = false;
> +	ulong roots_to_invalidate = 0;

"unsigned long roots" again, unless someone has a better idea.
diff mbox series

Patch

diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 90339b71bd56..b0e7ac6d4e88 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -5742,27 +5742,20 @@  EXPORT_SYMBOL_GPL(kvm_mmu_invlpg);
 void kvm_mmu_invpcid_gva(struct kvm_vcpu *vcpu, gva_t gva, unsigned long pcid)
 {
 	struct kvm_mmu *mmu = vcpu->arch.mmu;
-	bool tlb_flush = false;
+	ulong roots_to_invalidate = 0;
 	uint i;
 
-	if (pcid == kvm_get_active_pcid(vcpu)) {
-		if (mmu->invlpg)
-			mmu->invlpg(vcpu, gva, mmu->root.hpa);
-		tlb_flush = true;
-	}
+	if (pcid == kvm_get_active_pcid(vcpu))
+		roots_to_invalidate |= KVM_MMU_ROOT_CURRENT;
 
 	for (i = 0; i < KVM_MMU_NUM_PREV_ROOTS; i++) {
 		if (VALID_PAGE(mmu->prev_roots[i].hpa) &&
-		    pcid == kvm_get_pcid(vcpu, mmu->prev_roots[i].pgd)) {
-			if (mmu->invlpg)
-				mmu->invlpg(vcpu, gva, mmu->prev_roots[i].hpa);
-			tlb_flush = true;
-		}
+		    pcid == kvm_get_pcid(vcpu, mmu->prev_roots[i].pgd))
+			roots_to_invalidate |= KVM_MMU_ROOT_PREVIOUS(i);
 	}
 
-	if (tlb_flush)
-		static_call(kvm_x86_flush_tlb_gva)(vcpu, gva);
-
+	if (roots_to_invalidate)
+		kvm_mmu_invalidate_gva(vcpu, mmu, gva, roots_to_invalidate);
 	++vcpu->stat.invlpg;
 
 	/*