Displaying 7 results from an estimated 7 matches for "vcpu_is_mmio_gpa".
2019 Aug 13
0
[RFC PATCH v6 75/92] kvm: x86: disable gpa_available optimization in emulator_read_write_onepage()
...->arch.gpa_available &&
> emulator_can_use_gpa(ctxt) &&
> + (vcpu->arch.error_code & PFERR_GUEST_FINAL_MASK) &&
> (addr & ~PAGE_MASK) == (vcpu->arch.gpa_val & ~PAGE_MASK)) {
> gpa = vcpu->arch.gpa_val;
> ret = vcpu_is_mmio_gpa(vcpu, addr, gpa, write);
>
Yes, adding that check makes sense as well (still in kvm_mmu_page_fault).
Paolo
2019 Aug 13
1
[RFC PATCH v6 75/92] kvm: x86: disable gpa_available optimization in emulator_read_write_onepage()
On 09/08/19 18:00, Adalbert Laz?r wrote:
> If the EPT violation was caused by an execute restriction imposed by the
> introspection tool, gpa_available will point to the instruction pointer,
> not the to the read/write location that has to be used to emulate the
> current instruction.
>
> This optimization should be disabled only when the VM is introspected,
> not just
2020 Feb 07
0
[RFC PATCH v7 30/78] KVM: x86: page track: provide all page tracking hooks with the guest virtual address
...cu_read_unlock(&head->track_srcu, idx);
}
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 4565f3cce201..0dd43cf5d2b1 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -5554,7 +5554,7 @@ static int vcpu_mmio_gva_to_gpa(struct kvm_vcpu *vcpu, unsigned long gva,
return vcpu_is_mmio_gpa(vcpu, gva, *gpa, write);
}
-int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
+int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa, gva_t gva,
const void *val, int bytes)
{
int ret;
@@ -5562,14 +5562,14 @@ int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
ret = kvm_...
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
2020 Feb 07
78
[RFC PATCH v7 00/78] 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 VMs (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
2020 Jul 21
87
[PATCH v9 00/84] 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 VMs (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