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Commit 95b0430d authored by Takuya Yoshikawa's avatar Takuya Yoshikawa Committed by Gleb Natapov
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KVM: MMU: Mark sp mmio cached when creating mmio spte 



This will be used not to zap unrelated mmu pages when creating/moving
a memory slot later.

Reviewed-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: default avatarTakuya Yoshikawa <yoshikawa_takuya_b1@lab.ntt.co.jp>
Signed-off-by: default avatarGleb Natapov <gleb@redhat.com>
parent 0238ea91

arch/x86/include/asm/kvm_host.h

+1 −0
Original line number Diff line number Diff line
@@ -230,6 +230,7 @@ struct kvm_mmu_page { 
#endif



	int write_flooding_count;

	bool mmio_cached;

};



struct kvm_pio_request {

arch/x86/kvm/mmu.c

+3 −0
Original line number Diff line number Diff line
@@ -199,8 +199,11 @@ EXPORT_SYMBOL_GPL(kvm_mmu_set_mmio_spte_mask); 


static void mark_mmio_spte(u64 *sptep, u64 gfn, unsigned access)

{

	struct kvm_mmu_page *sp =  page_header(__pa(sptep));



	access &= ACC_WRITE_MASK | ACC_USER_MASK;



	sp->mmio_cached = true;

	trace_mark_mmio_spte(sptep, gfn, access);

	mmu_spte_set(sptep, shadow_mmio_mask | access | gfn << PAGE_SHIFT);

}