search for: vmx_msr_entry

...DEFAULT_MSR_AUTO_LOAD_COUNT; + extern const ulong vmx_return; -#define NR_AUTOLOAD_MSRS 8 #define VMCS02_POOL_SIZE 1 struct vmcs { @@ -588,8 +590,8 @@ struct vcpu_vmx { bool __launched; /* temporary, used in vmx_vcpu_run */ struct msr_autoload { unsigned nr; - struct vmx_msr_entry guest[NR_AUTOLOAD_MSRS]; - struct vmx_msr_entry host[NR_AUTOLOAD_MSRS]; + struct vmx_msr_entry *guest; + struct vmx_msr_entry *host; } msr_autoload; struct { int loaded; @@ -1942,6 +1944,7 @@ static void clear_atomic_switch_msr(struct vcpu_vmx *vmx, unsigned msr) m->host[i]...

This patch series enables the Last Branch Recording feature for the guest. Instead of trapping each LBR stack MSR access, the MSRs are passthroughed to the guest. Those MSRs are switched (i.e. load and saved) on VMExit and VMEntry. Test: Try "perf record -b ./test_program" on guest. Wei Wang (4): KVM/vmx: re-write the msr auto switch feature KVM/vmx: auto switch

This patch series enables the Last Branch Recording feature for the guest. Instead of trapping each LBR stack MSR access, the MSRs are passthroughed to the guest. Those MSRs are switched (i.e. load and saved) on VMExit and VMEntry. Test: Try "perf record -b ./test_program" on guest. Wei Wang (4): KVM/vmx: re-write the msr auto switch feature KVM/vmx: auto switch

...diff -r 7c6844dd4a0d xen/include/asm-x86/hvm/vmx/vmcs.h --- a/xen/include/asm-x86/hvm/vmx/vmcs.h Tue Sep 11 15:34:36 2012 +0800 +++ b/xen/include/asm-x86/hvm/vmx/vmcs.h Fri Sep 14 09:16:35 2012 +0800 @@ -110,6 +110,9 @@ struct arch_vmx_struct { unsigned int host_msr_count; struct vmx_msr_entry *host_msr_area; + uint32_t eoi_exitmap_changed; + uint64_t eoi_exit_bitmap[4]; + unsigned long host_cr0; /* Is the guest in real mode? */ @@ -183,6 +186,7 @@ extern u32 vmx_vmentry_control; #define SECONDARY_EXEC_WBINVD_EXITING 0x0000004...

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

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