search for: set_msr_interception

...) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 0021d8c2feca..174ced633b60 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -1077,7 +1077,8 @@ static bool msr_write_intercepted(struct kvm_vcpu *vcpu, unsigned msr) return !!test_bit(bit_write, &tmp); } -static void set_msr_interception(u32 *msrpm, unsigned msr, +static void set_msr_interception(struct kvm_vcpu *vcpu, + u32 *msrpm, unsigned msr, int type, bool value) { u8 bit_read, bit_write; @@ -1116,7 +1117,7 @@ static void svm_vcpu_init_msrpm(u32 *msrpm) if (!direct_access_msrs[i].always) continue; - set_...

...F_PER_VCPU 64 enum kvm_reg { diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index 4e5b07606891..e16be80edd7e 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -584,7 +584,7 @@ static bool msr_write_intercepted(struct kvm_vcpu *vcpu, unsigned msr) } static void set_msr_interception(u32 *msrpm, unsigned msr, - int read, int write) + int type, bool value) { u8 bit_read, bit_write; unsigned long tmp; @@ -603,8 +603,10 @@ static void set_msr_interception(u32 *msrpm, unsigned msr, BUG_ON(offset == MSR_INVALID); - read ? clear_bit(bit_read, &tmp) : set_bit(...

...define ASYNC_PF_PER_VCPU 64 enum kvm_reg { diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index e3369562d6fe..0021d8c2feca 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -1078,7 +1078,7 @@ static bool msr_write_intercepted(struct kvm_vcpu *vcpu, unsigned msr) } static void set_msr_interception(u32 *msrpm, unsigned msr, - int read, int write) + int type, bool value) { u8 bit_read, bit_write; unsigned long tmp; @@ -1097,8 +1097,11 @@ static void set_msr_interception(u32 *msrpm, unsigned msr, BUG_ON(offset == MSR_INVALID); - read ? clear_bit(bit_read, &tmp) : set_bi...

...r); u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg); void (*get_segment)(struct kvm_vcpu *vcpu, diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index dfa1a6e74bf7..9c8e77193f98 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -612,6 +612,16 @@ static void set_msr_interception(struct kvm_vcpu *vcpu, msrpm[offset] = tmp; } +static void svm_control_msr_intercept(struct kvm_vcpu *vcpu, unsigned int msr, + int type, bool enable) +{ + const struct vcpu_svm *svm = to_svm(vcpu); + u32 *msrpm = is_guest_mode(vcpu) ? svm->nested.msrpm : + svm->msrpm; +...

...pu_set_regs() KVM: x86: add .bp_intercepted() to struct kvm_x86_ops KVM: x86: add .cr3_write_intercepted() KVM: x86: add .desc_intercepted() KVM: x86: export .msr_write_intercepted() KVM: x86: use MSR_TYPE_R, MSR_TYPE_W and MSR_TYPE_RW with AMD code too KVM: svm: pass struct kvm_vcpu to set_msr_interception() KVM: vmx: pass struct kvm_vcpu to the intercept msr related functions KVM: x86: add .control_singlestep() KVM: x86: export kvm_arch_vcpu_set_guest_debug() KVM: x86: export kvm_inject_pending_exception() KVM: x86: export kvm_vcpu_ioctl_x86_get_xsave() KVM: introspection: restore the st...

...) get_intercept(svm, INTERCEPT_LOAD_TR)); } +static void svm_control_msr_intercept(struct kvm_vcpu *vcpu, unsigned int msr, + int type, bool enable) +{ + const struct vcpu_svm *svm = to_svm(vcpu); + u32 *msrpm = is_guest_mode(vcpu) ? svm->nested.msrpm : + svm->msrpm; + + set_msr_interception(vcpu, msrpm, msr, type, !enable); +} + static struct kvm_x86_ops svm_x86_ops __ro_after_init = { .cpu_has_kvm_support = has_svm, .disabled_by_bios = is_disabled, @@ -7370,6 +7380,7 @@ static struct kvm_x86_ops svm_x86_ops __ro_after_init = { .get_msr_feature = svm_get_msr_feature, .get_msr...

...ted() to struct kvm_x86_ops KVM: x86: add .cr3_write_intercepted() KVM: svm: add support for descriptor-table exits KVM: x86: add .desc_intercepted() KVM: x86: export .msr_write_intercepted() KVM: x86: use MSR_TYPE_R, MSR_TYPE_W and MSR_TYPE_RW with AMD KVM: svm: pass struct kvm_vcpu to set_msr_interception() KVM: vmx: pass struct kvm_vcpu to the intercept msr related functions KVM: x86: add .control_singlestep() KVM: x86: export kvm_arch_vcpu_set_guest_debug() KVM: x86: export kvm_inject_pending_exception() KVM: x86: export kvm_vcpu_ioctl_x86_get_xsave() KVM: introspection: add cleanup su...

...t_msr_mask(vcpu, msr->index, true)) return true; if (kvm_x86_ops->get_msr(vcpu, &old_msr)) return true; diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 7cd48ef25f59..309a7e5e8b62 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -1085,6 +1085,17 @@ static void set_msr_interception(struct kvm_vcpu *vcpu, unsigned long tmp; u32 offset; +#ifdef CONFIG_KVM_INTROSPECTION + if ((type & MSR_TYPE_W) && + kvmi_monitor_msrw_intercept(vcpu, msr, !value)) + type &= ~MSR_TYPE_W; + + /* + * Avoid the below warning for kvmi intercepted msrs. + */ + if (!kvmi_ms...

...r, + bool enable) +{ + struct vcpu_svm *svm = to_svm(vcpu); + u32 *msrpm = svm->msrpm; + + /* + * The below code enable or disable the msr interception for both + * read and write. The best way will be to get here the current + * bit status for read and send that value as argument. + */ + set_msr_interception(msrpm, msr, enable, enable); +} + static bool svm_nested_pagefault(struct kvm_vcpu *vcpu) { return false; @@ -7126,6 +7140,7 @@ static struct kvm_x86_ops svm_x86_ops __ro_after_init = { .has_emulated_msr = svm_has_emulated_msr, .cr3_write_exiting = svm_cr3_write_exiting, + .msr_intercept...

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