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From: Mircea C?rjaliu <mcirjaliu at bitdefender.com> This change is needed because the introspection tool can write-protect guest page tables, exec-protect heap/stack pages and let KVM emulate the instruction that caused these violations. Signed-off-by: Mircea C?rjaliu <mcirjaliu at bitdefender.com> Signed...

...vcpu_enter_guest() * when halted - kvm_vcpu_block() In kvm_vcpu_block(), we check to see if there are any introspection requests during the swait loop, handle them outside of swait loop and start swait again. Signed-off-by: Mihai Don?u <mdontu at bitdefender.com> Co-developed-by: Mircea C?rjaliu <mcirjaliu at bitdefender.com> Signed-off-by: Mircea C?rjaliu <mcirjaliu at bitdefender.com> Signed-off-by: Adalbert Laz?r <alazar at bitdefender.com> --- arch/x86/kvm/x86.c | 3 +++ include/linux/kvmi.h | 2 ++ virt/kvm/kvm_main.c | 28 ++++++++++++++++++++++------ 3 files...

From: Mircea C?rjaliu <mcirjaliu at bitdefender.com> This change is needed because the introspection tool can write-protect guest page tables or exec-protect heap/stack pages. Signed-off-by: Mircea C?rjaliu <mcirjaliu at bitdefender.com> Co-developed-by: Adalbert Laz?r <alazar at bitdefender.com> Sig...

From: Mihai Don?u <mdontu at bitdefender.com> The introspection requests (KVM_REQ_INTROSPECTION) are checked before entering guest or when the vCPU is halted. Signed-off-by: Mihai Don?u <mdontu at bitdefender.com> Co-developed-by: Mircea C?rjaliu <mcirjaliu at bitdefender.com> Signed-off-by: Mircea C?rjaliu <mcirjaliu at bitdefender.com> Co-developed-by: Adalbert Laz?r <alazar at bitdefender.com> Signed-off-by: Adalbert Laz?r <alazar at bitdefender.com> --- arch/x86/include/asm/kvm_host.h | 1 + arch/x86/kvm/x86.c...

...he kvm structure a reference counter (the new object will be used by the thread receiving introspection commands/events) and a completion variable (to signal that the VM can be hooked by the introspection tool). Signed-off-by: Mihai Don?u <mdontu at bitdefender.com> Co-developed-by: Mircea C?rjaliu <mcirjaliu at bitdefender.com> Signed-off-by: Mircea C?rjaliu <mcirjaliu at bitdefender.com> Signed-off-by: Adalbert Laz?r <alazar at bitdefender.com> --- Documentation/virtual/kvm/kvmi.rst | 75 ++++++++++++++++++++++++++++++ arch/x86/kvm/Kconfig | 7 +++ arch/x86...

...its hooks (eg. breakpoints). Suggested-by: Stefan Hajnoczi <stefanha at redhat.com> Suggested-by: Paolo Bonzini <pbonzini at redhat.com> Co-developed-by: Mihai Don?u <mdontu at bitdefender.com> Signed-off-by: Mihai Don?u <mdontu at bitdefender.com> Co-developed-by: Mircea C?rjaliu <mcirjaliu at bitdefender.com> Signed-off-by: Mircea C?rjaliu <mcirjaliu at bitdefender.com> Co-developed-by: Adalbert Laz?r <alazar at bitdefender.com> Signed-off-by: Adalbert Laz?r <alazar at bitdefender.com> --- Documentation/virtual/kvm/api.txt | 50 ++++++++++ Docume...

...2/m128, xmm1 kvm: x86: emulate xorps xmm/m128, xmm kvm: x86: emulate fst/fstp m64fp kvm: x86: make lock cmpxchg r, r/m atomic kvm: x86: emulate lock cmpxchg8b atomically kvm: x86: emulate lock cmpxchg16b m128 kvm: x86: fallback to the single-step on multipage CMPXCHG emulation Mircea C?rjaliu (5): kvm: introspection: add vCPU related data kvm: introspection: add KVMI_EVENT_CREATE_VCPU mm: add support for remote mapping kvm: introspection: add memory map/unmap support on the guest side kvm: introspection: use remote mapping Nicu?or C??u (5): kvm: x86: block any attempt to di...

...2/m128, xmm1 kvm: x86: emulate xorps xmm/m128, xmm kvm: x86: emulate fst/fstp m64fp kvm: x86: make lock cmpxchg r, r/m atomic kvm: x86: emulate lock cmpxchg8b atomically kvm: x86: emulate lock cmpxchg16b m128 kvm: x86: fallback to the single-step on multipage CMPXCHG emulation Mircea C?rjaliu (5): kvm: introspection: add vCPU related data kvm: introspection: add KVMI_EVENT_CREATE_VCPU mm: add support for remote mapping kvm: introspection: add memory map/unmap support on the guest side kvm: introspection: use remote mapping Nicu?or C??u (5): kvm: x86: block any attempt to di...

From: Mircea C?rjaliu <mcirjaliu at bitdefender.com> The following two new mm exports are introduced: * mm_remote_map(struct mm_struct *req_mm, unsigned long req_hva, unsigned long map_hva) * mm_remote_unmap(unsigned long map_hva) * mm_remote_reset(void) * rmap_walk_remote(st...

...VMI_VCPU_CONTROL_MSR and KVMI_EVENT_MSR KVM: introspection: add KVMI_VM_SET_PAGE_ACCESS KVM: introspection: add KVMI_EVENT_PF KVM: introspection: emulate a guest page table walk on SPT violations due to A/D bit updates KVM: x86: call the page tracking code on emulation failure Mircea C?rjaliu (2): KVM: x86: disable gpa_available optimization for fetch and page-walk NPF/EPT violations KVM: introspection: add vCPU related data Nicu?or C??u (19): KVM: x86: add kvm_arch_vcpu_set_regs() KVM: x86: add .bp_intercepted() to struct kvm_x86_ops KVM: x86: add .cr3_write_intercepted(...

...VMI_VCPU_CONTROL_MSR and KVMI_EVENT_MSR KVM: introspection: add KVMI_VM_SET_PAGE_ACCESS KVM: introspection: add KVMI_EVENT_PF KVM: introspection: emulate a guest page table walk on SPT violations due to A/D bit updates KVM: x86: call the page tracking code on emulation failure Mircea C?rjaliu (2): KVM: x86: disable gpa_available optimization for fetch and page-walk SPT violations KVM: introspection: add vCPU related data Nicu?or C??u (21): KVM: x86: add kvm_arch_vcpu_set_regs() KVM: x86: add .bp_intercepted() to struct kvm_x86_ops KVM: x86: add .cr3_write_intercepted()...