Displaying 5 results from an estimated 5 matches for "emulator_can_use_gpa".
2019 Aug 13
1
[RFC PATCH v6 75/92] kvm: x86: disable gpa_available optimization in emulator_read_write_onepage()
...tor_read_write_onepage(unsigned long addr, void *val,
> * operation using rep will only have the initial GPA from the NPF
> * occurred.
> */
> - if (vcpu->arch.gpa_available &&
> + if (vcpu->arch.gpa_available && !kvmi_is_present() &&
> emulator_can_use_gpa(ctxt) &&
> (addr & ~PAGE_MASK) == (vcpu->arch.gpa_val & ~PAGE_MASK)) {
> gpa = vcpu->arch.gpa_val;
>
2019 Aug 09
0
[RFC PATCH v6 75/92] kvm: x86: disable gpa_available optimization in emulator_read_write_onepage()
...,7 +5532,7 @@ static int emulator_read_write_onepage(unsigned long addr, void *val,
* operation using rep will only have the initial GPA from the NPF
* occurred.
*/
- if (vcpu->arch.gpa_available &&
+ if (vcpu->arch.gpa_available && !kvmi_is_present() &&
emulator_can_use_gpa(ctxt) &&
(addr & ~PAGE_MASK) == (vcpu->arch.gpa_val & ~PAGE_MASK)) {
gpa = vcpu->arch.gpa_val;
2019 Aug 13
0
[RFC PATCH v6 75/92] kvm: x86: disable gpa_available optimization in emulator_read_write_onepage()
...rjaliu at bitdefender.com>
>
> arch/x86/kvm/x86.c | 1 +
> 1 file changed, 1 insertion(+)
>
> /home/b/kvmi at 9cad844~1/arch/x86/kvm/x86.c:4757,4762 - /home/b/kvmi at 9cad844/arch/x86/kvm/x86.c:4757,4763
> */
> if (vcpu->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 c...
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