diff mbox series

[v6,16/22] KVM: x86/mmu: Update page stats in __rmap_add()

Message ID 20220516232138.1783324-17-dmatlack@google.com (mailing list archive)
State Handled Elsewhere
Headers show
Series KVM: Extend Eager Page Splitting to the shadow MMU | expand

Commit Message

David Matlack May 16, 2022, 11:21 p.m. UTC 
Update the page stats in __rmap_add() rather than at the call site. This
will avoid having to manually update page stats when splitting huge
pages in a subsequent commit.

No functional change intended.

Reviewed-by: Ben Gardon <bgardon@google.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: David Matlack <dmatlack@google.com>
---
 arch/x86/kvm/mmu/mmu.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Comments

Sean Christopherson June 17, 2022, 4:40 p.m. UTC | #1 
On Mon, May 16, 2022, David Matlack wrote:
> Update the page stats in __rmap_add() rather than at the call site. This
> will avoid having to manually update page stats when splitting huge
> pages in a subsequent commit.
> 
> No functional change intended.
> 
> Reviewed-by: Ben Gardon <bgardon@google.com>
> Reviewed-by: Peter Xu <peterx@redhat.com>
> Signed-off-by: David Matlack <dmatlack@google.com>
> ---

Reviewed-by: Sean Christopherson <seanjc@google.com>
diff mbox series

Patch

diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 15c0f03848d3..6aef85dac1e2 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -1588,6 +1588,8 @@  static void __rmap_add(struct kvm *kvm,
 
 	sp = sptep_to_sp(spte);
 	kvm_mmu_page_set_gfn(sp, spte - sp->spt, gfn);
+	kvm_update_page_stats(kvm, sp->role.level, 1);
+
 	rmap_head = gfn_to_rmap(gfn, sp->role.level, slot);
 	rmap_count = pte_list_add(cache, spte, rmap_head);
 
@@ -2810,7 +2812,6 @@  static int mmu_set_spte(struct kvm_vcpu *vcpu, struct kvm_memory_slot *slot,
 
 	if (!was_rmapped) {
 		WARN_ON_ONCE(ret == RET_PF_SPURIOUS);
-		kvm_update_page_stats(vcpu->kvm, level, 1);
 		rmap_add(vcpu, slot, sptep, gfn);
 	}