From: Nicușor Cîțu <[email protected]> This function is needed for KVMI_VCPU_CONTROL_SINGLESTEP and KVMI_EVENT_SINGLESTEP.
Signed-off-by: Nicușor Cîțu <[email protected]> Signed-off-by: Adalbert Lazăr <[email protected]> --- arch/x86/include/asm/kvm_host.h | 1 + arch/x86/kvm/vmx/vmx.c | 11 +++++++++++ 2 files changed, 12 insertions(+) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 2e993b240b66..5b8e44e494b1 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1292,6 +1292,7 @@ struct kvm_x86_ops { u64 (*fault_gla)(struct kvm_vcpu *vcpu); bool (*spt_fault)(struct kvm_vcpu *vcpu); bool (*gpt_translation_fault)(struct kvm_vcpu *vcpu); + void (*control_singlestep)(struct kvm_vcpu *vcpu, bool enable); }; struct kvm_arch_async_pf { diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 5422c35a3216..13462ef2ce9e 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -7928,6 +7928,16 @@ static bool vmx_gpt_translation_fault(struct kvm_vcpu *vcpu) return true; } +static void vmx_control_singlestep(struct kvm_vcpu *vcpu, bool enable) +{ + if (enable) + exec_controls_setbit(to_vmx(vcpu), + CPU_BASED_MONITOR_TRAP_FLAG); + else + exec_controls_clearbit(to_vmx(vcpu), + CPU_BASED_MONITOR_TRAP_FLAG); +} + static struct kvm_x86_ops vmx_x86_ops __ro_after_init = { .cpu_has_kvm_support = cpu_has_kvm_support, .disabled_by_bios = vmx_disabled_by_bios, @@ -8092,6 +8102,7 @@ static struct kvm_x86_ops vmx_x86_ops __ro_after_init = { .fault_gla = vmx_fault_gla, .spt_fault = vmx_spt_fault, .gpt_translation_fault = vmx_gpt_translation_fault, + .control_singlestep = vmx_control_singlestep, }; static void vmx_cleanup_l1d_flush(void) _______________________________________________ Virtualization mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/virtualization
