Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 34d4cb8f authored by Marcelo Tosatti's avatar Marcelo Tosatti Committed by Avi Kivity
Browse files

KVM: MMU: nuke shadowed pgtable pages and ptes on memslot destruction 



Flush the shadow mmu before removing regions to avoid stale entries.

Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent d6e88aec

arch/ia64/kvm/kvm-ia64.c

+3 −0
Original line number Diff line number Diff line
@@ -1455,6 +1455,9 @@ int kvm_arch_set_memory_region(struct kvm *kvm, 
	return 0;

}



void kvm_arch_flush_shadow(struct kvm *kvm)

{

}



long kvm_arch_dev_ioctl(struct file *filp,

		unsigned int ioctl, unsigned long arg)

arch/powerpc/kvm/powerpc.c

+4 −0
Original line number Diff line number Diff line
@@ -170,6 +170,10 @@ int kvm_arch_set_memory_region(struct kvm *kvm, 
	return 0;

}



void kvm_arch_flush_shadow(struct kvm *kvm)

{

}



struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)

{

	struct kvm_vcpu *vcpu;

arch/s390/kvm/kvm-s390.c

+4 −0
Original line number Diff line number Diff line
@@ -675,6 +675,10 @@ int kvm_arch_set_memory_region(struct kvm *kvm, 
	return 0;

}



void kvm_arch_flush_shadow(struct kvm *kvm)

{

}



gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn)

{

	return gfn;

arch/x86/kvm/x86.c

+5 −0
Original line number Diff line number Diff line
@@ -4032,6 +4032,11 @@ int kvm_arch_set_memory_region(struct kvm *kvm, 
	return 0;

}



void kvm_arch_flush_shadow(struct kvm *kvm)

{

	kvm_mmu_zap_all(kvm);

}



int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)

{

	return vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE

include/linux/kvm_host.h

+1 −0
Original line number Diff line number Diff line
@@ -168,6 +168,7 @@ int kvm_arch_set_memory_region(struct kvm *kvm, 
				struct kvm_userspace_memory_region *mem,

				struct kvm_memory_slot old,

				int user_alloc);

void kvm_arch_flush_shadow(struct kvm *kvm);

gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);

struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);

unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);