search for: emulator_read_write_onepag

...bert Laz?r <alazar at bitdefender.com> --- arch/x86/kvm/x86.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 965c4f0108eb..3975331230b9 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -5532,7 +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 &...

...> --- > arch/x86/kvm/x86.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c > index 965c4f0108eb..3975331230b9 100644 > --- a/arch/x86/kvm/x86.c > +++ b/arch/x86/kvm/x86.c > @@ -5532,7 +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(...

On 13/08/19 16:33, Adalbert Laz?r wrote: > On Tue, 13 Aug 2019 10:47:34 +0200, Paolo Bonzini <pbonzini at redhat.com> wrote: >> 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

...uct kvm_vcpu *vcpu, gpa_t gpa, gva_t gva, void *val, int bytes) { - return emulator_write_phys(vcpu, gpa, val, bytes); + return emulator_write_phys(vcpu, gpa, gva, val, bytes); } static int write_mmio(struct kvm_vcpu *vcpu, gpa_t gpa, int bytes, void *val) @@ -5668,7 +5668,7 @@ static int emulator_read_write_onepage(unsigned long addr, void *val, return X86EMUL_PROPAGATE_FAULT; } - if (!ret && ops->read_write_emulate(vcpu, gpa, val, bytes)) + if (!ret && ops->read_write_emulate(vcpu, gpa, addr, val, bytes)) return X86EMUL_CONTINUE; /* @@ -5827,7 +5827,7 @@ static int emula...

...pu_set_guest_debug() kvm: introspection: add custom input when single-stepping a vCPU kvm: x86: keep the page protected if tracked by the introspection tool kvm: x86: filter out access rights only when tracked by the introspection tool kvm: x86: disable gpa_available optimization in emulator_read_write_onepage() kvm: x86: disable EPT A/D bits if introspection is present kvm: introspection: add trace functions Marian Rotariu (1): kvm: introspection: add KVMI_GET_CPUID Mihai Don?u (47): kvm: introduce KVMI (VM introspection subsystem) kvm: introspection: add KVMI_GET_GUEST_INFO kvm: introspe...

...pu_set_guest_debug() kvm: introspection: add custom input when single-stepping a vCPU kvm: x86: keep the page protected if tracked by the introspection tool kvm: x86: filter out access rights only when tracked by the introspection tool kvm: x86: disable gpa_available optimization in emulator_read_write_onepage() kvm: x86: disable EPT A/D bits if introspection is present kvm: introspection: add trace functions Marian Rotariu (1): kvm: introspection: add KVMI_GET_CPUID Mihai Don?u (47): kvm: introduce KVMI (VM introspection subsystem) kvm: introspection: add KVMI_GET_GUEST_INFO kvm: introspe...

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

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