search for: spt_fault

...rch/x86/include/asm/kvm_host.h index 6094884d3015..0f25f69fc8be 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1255,6 +1255,7 @@ struct kvm_x86_ops { int (*enable_direct_tlbflush)(struct kvm_vcpu *vcpu); u64 (*fault_gla)(struct kvm_vcpu *vcpu); + bool (*spt_fault)(struct kvm_vcpu *vcpu); }; struct kvm_arch_async_pf { diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index ab9576444e6b..f908ef374617 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -7358,6 +7358,14 @@ static u64 svm_fault_gla(struct kvm_vcpu *vcpu) return svm->vcpu.arch...

...ons(+) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 0f25f69fc8be..e05569a5da10 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1256,6 +1256,7 @@ 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); }; struct kvm_arch_async_pf { diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index f908ef374617..38ecd86c1d58 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -7366,6 +7366,17 @@ static bool svm_sp...

...ons(+) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index fb41199b33fc..a905e14e4c75 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1293,6 +1293,7 @@ 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); }; struct kvm_x86_nested_ops { diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index 7ecfa10dce5d..580997701b1c 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -4097,6 +4097,17 @@ s...

...tions(+) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index e05569a5da10..6927a6044e26 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1257,6 +1257,7 @@ 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 83f047fe6bc1..475f5eb6c4c2 100644 --- a/arch/x86/kv...

...tions(+) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index a905e14e4c75..487d1fa6e76d 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1294,6 +1294,7 @@ 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_x86_nested_ops { diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index a043e3e7d09a..4ef4f3c1b78a 100644 --- a/arch/x86/k...

...| 6 ++++++ 2 files changed, 7 insertions(+) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index d96bf0e15ea2..ab6989745f9c 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1300,6 +1300,7 @@ struct kvm_x86_ops { bool (*spt_fault)(struct kvm_vcpu *vcpu); bool (*gpt_translation_fault)(struct kvm_vcpu *vcpu); void (*control_singlestep)(struct kvm_vcpu *vcpu, bool enable); + bool (*get_vmfunc_status)(void); }; struct kvm_x86_nested_ops { diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 8c9ccd1ba0f0..e...

...{ bool (*has_emulated_msr)(int index); void (*cpuid_update)(struct kvm_vcpu *vcpu); + void (*msr_intercept)(struct kvm_vcpu *vcpu, unsigned int msr, + bool enable); void (*cr3_write_exiting)(struct kvm_vcpu *vcpu, bool enable); bool (*nested_pagefault)(struct kvm_vcpu *vcpu); bool (*spt_fault)(struct kvm_vcpu *vcpu); @@ -1621,6 +1623,8 @@ static inline int kvm_cpu_get_apicid(int mps_cpu) #define put_smstate(type, buf, offset, val) \ *(type *)((buf) + (offset) - 0x7e00) = val +void kvm_arch_msr_intercept(struct kvm_vcpu *vcpu, unsigned int msr, + bool enable)...

...ruct kvm_vcpu *vcpu, unsigned int msr, bool enable); bool (*desc_intercept)(struct kvm_vcpu *vcpu, bool enable); + void (*set_mtf)(struct kvm_vcpu *vcpu, bool enable); void (*cr3_write_exiting)(struct kvm_vcpu *vcpu, bool enable); bool (*nested_pagefault)(struct kvm_vcpu *vcpu); bool (*spt_fault)(struct kvm_vcpu *vcpu); @@ -1628,6 +1629,8 @@ void kvm_arch_msr_intercept(struct kvm_vcpu *vcpu, unsigned int msr, bool enable); bool kvm_mmu_nested_pagefault(struct kvm_vcpu *vcpu); bool kvm_spt_fault(struct kvm_vcpu *vcpu); +void kvm_set_mtf(struct kvm_vcpu *vcpu, bool enable); +void kvm_...

...,11 @@ bool kvmi_arch_pf_event(struct kvm_vcpu *vcpu, gpa_t gpa, gva_t gva, return ret; } +void kvmi_arch_features(struct kvmi_features *feat) +{ + feat->singlestep = !!kvm_x86_ops->control_singlestep; +} + bool kvmi_arch_pf_of_interest(struct kvm_vcpu *vcpu) { return kvm_x86_ops->spt_fault(vcpu) && diff --git a/include/uapi/linux/kvmi.h b/include/uapi/linux/kvmi.h index c74ded097efa..7cd41a815967 100644 --- a/include/uapi/linux/kvmi.h +++ b/include/uapi/linux/kvmi.h @@ -91,6 +91,7 @@ struct kvmi_error_code { struct kvmi_get_version_reply { __u32 version; __u32 padding; +...

...s should be enable_single_step() or something along those lines. For example, I assume SVM could implement something that is mostly functional via RFLAGS.TF. > void (*cr3_write_exiting)(struct kvm_vcpu *vcpu, bool enable); > bool (*nested_pagefault)(struct kvm_vcpu *vcpu); > bool (*spt_fault)(struct kvm_vcpu *vcpu); > @@ -1628,6 +1629,8 @@ void kvm_arch_msr_intercept(struct kvm_vcpu *vcpu, unsigned int msr, > bool enable); > bool kvm_mmu_nested_pagefault(struct kvm_vcpu *vcpu); > bool kvm_spt_fault(struct kvm_vcpu *vcpu); > +void kvm_set_mtf(struct kvm_vcpu *vcpu,...

...eexec kvm: x86: wire in the preread/prewrite/preexec page trackers kvm: x86: add kvm_mmu_nested_pagefault() kvm: introspection: use page track kvm: x86: consult the page tracking from kvm_mmu_get_page() and __direct_map() kvm: introspection: add KVMI_CONTROL_EVENTS kvm: x86: add kvm_spt_fault() kvm: introspection: add KVMI_EVENT_PF kvm: introspection: add KVMI_GET_PAGE_ACCESS kvm: introspection: add KVMI_SET_PAGE_ACCESS kvm: introspection: add KVMI_READ_PHYSICAL and KVMI_WRITE_PHYSICAL kvm: introspection: add KVMI_GET_REGISTERS kvm: introspection: add KVMI_SET_REGISTERS kv...

...eexec kvm: x86: wire in the preread/prewrite/preexec page trackers kvm: x86: add kvm_mmu_nested_pagefault() kvm: introspection: use page track kvm: x86: consult the page tracking from kvm_mmu_get_page() and __direct_map() kvm: introspection: add KVMI_CONTROL_EVENTS kvm: x86: add kvm_spt_fault() kvm: introspection: add KVMI_EVENT_PF kvm: introspection: add KVMI_GET_PAGE_ACCESS kvm: introspection: add KVMI_SET_PAGE_ACCESS kvm: introspection: add KVMI_READ_PHYSICAL and KVMI_WRITE_PHYSICAL kvm: introspection: add KVMI_GET_REGISTERS kvm: introspection: add KVMI_SET_REGISTERS kv...

...KVM: x86: avoid injecting #PF when emulate the VMCALL instruction KVM: x86: add .control_msr_intercept() KVM: x86: vmx: use a symbolic constant when checking the exit qualifications KVM: x86: save the error code during EPT/NPF exits handling KVM: x86: add .fault_gla() KVM: x86: add .spt_fault() KVM: x86: add .gpt_translation_fault() KVM: x86: extend kvm_mmu_gva_to_gpa_system() with the 'access' parameter KVM: x86: page track: provide all page tracking hooks with the guest virtual address KVM: x86: page track: add track_create_slot() callback KVM: x86: page_trac...

This patch series is based on the VM introspection patches (https://lore.kernel.org/kvm/20200721210922.7646-1-alazar at bitdefender.com/), extending the introspection API with EPT Views and Virtualization Exceptions (#VE) support. The purpose of this series is to get an initial feedback and to see if we are on the right track, especially because the changes made to add the EPT views are not small

...KVM: x86: avoid injecting #PF when emulate the VMCALL instruction KVM: x86: add .control_msr_intercept() KVM: x86: vmx: use a symbolic constant when checking the exit qualifications KVM: x86: save the error code during EPT/NPF exits handling KVM: x86: add .fault_gla() KVM: x86: add .spt_fault() KVM: x86: add .gpt_translation_fault() KVM: x86: extend kvm_mmu_gva_to_gpa_system() with the 'access' parameter KVM: x86: page track: provide all callbacks with the guest virtual address KVM: x86: page track: add track_create_slot() callback KVM: x86: page_track: add sup...