Displaying 4 results from an estimated 4 matches for "kvm_mmu_page_track_acc".
2019 Aug 13
1
[RFC PATCH v6 70/92] kvm: x86: filter out access rights only when tracked by the introspection tool
...changed, 3 insertions(+)
>
> diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
> index 65b6acba82da..fd64cf1115da 100644
> --- a/arch/x86/kvm/mmu.c
> +++ b/arch/x86/kvm/mmu.c
> @@ -2660,6 +2660,9 @@ static void clear_sp_write_flooding_count(u64 *spte)
> static unsigned int kvm_mmu_page_track_acc(struct kvm_vcpu *vcpu, gfn_t gfn,
> unsigned int acc)
> {
> + if (!kvmi_tracked_gfn(vcpu, gfn))
> + return acc;
> +
> if (kvm_page_track_is_active(vcpu, gfn, KVM_PAGE_TRACK_PREREAD))
> acc &= ~ACC_USER_MASK;
> if (kvm_page_track_is_active(vcpu, gfn, KVM...
2019 Aug 09
0
[RFC PATCH v6 70/92] kvm: x86: filter out access rights only when tracked by the introspection tool
...arch/x86/kvm/mmu.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 65b6acba82da..fd64cf1115da 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -2660,6 +2660,9 @@ static void clear_sp_write_flooding_count(u64 *spte)
static unsigned int kvm_mmu_page_track_acc(struct kvm_vcpu *vcpu, gfn_t gfn,
unsigned int acc)
{
+ if (!kvmi_tracked_gfn(vcpu, gfn))
+ return acc;
+
if (kvm_page_track_is_active(vcpu, gfn, KVM_PAGE_TRACK_PREREAD))
acc &= ~ACC_USER_MASK;
if (kvm_page_track_is_active(vcpu, gfn, KVM_PAGE_TRACK_PREWRITE) ||
2019 Aug 09
117
[RFC PATCH v6 00/92] VM introspection
The KVM introspection subsystem provides a facility for applications running
on the host or in a separate VM, to control the execution of other VM-s
(pause, resume, shutdown), query the state of the vCPUs (GPRs, MSRs etc.),
alter the page access bits in the shadow page tables (only for the hardware
backed ones, eg. Intel's EPT) and receive notifications when events of
interest have taken place
2019 Aug 09
117
[RFC PATCH v6 00/92] VM introspection
The KVM introspection subsystem provides a facility for applications running
on the host or in a separate VM, to control the execution of other VM-s
(pause, resume, shutdown), query the state of the vCPUs (GPRs, MSRs etc.),
alter the page access bits in the shadow page tables (only for the hardware
backed ones, eg. Intel's EPT) and receive notifications when events of
interest have taken place