search for: emulator_fix_hypercall

...z?r <alazar at bitdefender.com> --- arch/x86/kvm/x86.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index d0104adf7906..fee24bb5fa52 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -7467,11 +7467,15 @@ static int emulator_fix_hypercall(struct x86_emulate_ctxt *ctxt) struct kvm_vcpu *vcpu = emul_to_vcpu(ctxt); char instruction[3]; unsigned long rip = kvm_rip_read(vcpu); + int err; kvm_x86_ops->patch_hypercall(vcpu, instruction); - return emulator_write_emulated(ctxt, rip, instruction, 3, + err = emulator_write_emula...

...z?r <alazar at bitdefender.com> --- arch/x86/kvm/x86.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index e973ffe04d54..23bce3ef26d8 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -7714,11 +7714,15 @@ static int emulator_fix_hypercall(struct x86_emulate_ctxt *ctxt) struct kvm_vcpu *vcpu = emul_to_vcpu(ctxt); char instruction[3]; unsigned long rip = kvm_rip_read(vcpu); + int err; kvm_x86_ops.patch_hypercall(vcpu, instruction); - return emulator_write_emulated(ctxt, rip, instruction, 3, + err = emulator_write_emulated(...

.../arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 04b1d2916a0a..965c4f0108eb 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -7363,16 +7363,33 @@ int kvm_emulate_hypercall(struct kvm_vcpu *vcpu) } EXPORT_SYMBOL_GPL(kvm_emulate_hypercall); +#define KVM_HYPERCALL_INSN_LEN 3 + static int emulator_fix_hypercall(struct x86_emulate_ctxt *ctxt) { + int err; struct kvm_vcpu *vcpu = emul_to_vcpu(ctxt); - char instruction[3]; + char buf[KVM_HYPERCALL_INSN_LEN]; + char instruction[KVM_HYPERCALL_INSN_LEN]; unsigned long rip = kvm_rip_read(vcpu); + err = emulator_read_emulated(ctxt, rip, buf, sizeof(buf), +...

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

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

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