Displaying 8 results from an estimated 8 matches for "vmx_msr".
2017 Sep 25
2
[PATCH v1 1/4] KVM/vmx: re-write the msr auto switch feature
On 25/09/2017 06:44, Wei Wang wrote:
>
> +static void update_msr_autoload_count_max(void)
> +{
> + u64 vmx_msr;
> + int n;
> +
> + /*
> + * According to the Intel SDM, if Bits 27:25 of MSR_IA32_VMX_MISC is
> + * n, then (n + 1) * 512 is the recommended max number of MSRs to be
> + * included in the VMExit and VMEntry MSR auto switch list.
> + */
> + rdmsrl(MSR_IA32_VMX_MISC, vmx_...
2017 Sep 25
2
[PATCH v1 1/4] KVM/vmx: re-write the msr auto switch feature
On 25/09/2017 06:44, Wei Wang wrote:
>
> +static void update_msr_autoload_count_max(void)
> +{
> + u64 vmx_msr;
> + int n;
> +
> + /*
> + * According to the Intel SDM, if Bits 27:25 of MSR_IA32_VMX_MISC is
> + * n, then (n + 1) * 512 is the recommended max number of MSRs to be
> + * included in the VMExit and VMEntry MSR auto switch list.
> + */
> + rdmsrl(MSR_IA32_VMX_MISC, vmx_...
2020 Jul 22
0
[RFC PATCH v1 02/34] KVM: x86: export .get_eptp_switching_status()
...vmx/capabilities.h
index e7d7fcb7e17f..92781e2c523e 100644
--- a/arch/x86/kvm/vmx/capabilities.h
+++ b/arch/x86/kvm/vmx/capabilities.h
@@ -219,6 +219,14 @@ static inline bool cpu_has_vmx_vmfunc(void)
SECONDARY_EXEC_ENABLE_VMFUNC;
}
+static inline bool cpu_has_vmx_eptp_switching(void)
+{
+ u64 vmx_msr;
+
+ rdmsrl(MSR_IA32_VMX_VMFUNC, vmx_msr);
+ return vmx_msr & VMX_VMFUNC_EPTP_SWITCHING;
+}
+
static inline bool cpu_has_vmx_shadow_vmcs(void)
{
u64 vmx_msr;
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index ec4396d5f36f..ccbf561b0fc4 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++...
2017 Sep 25
0
[PATCH v1 1/4] KVM/vmx: re-write the msr auto switch feature
On 09/25/2017 07:54 PM, Paolo Bonzini wrote:
> On 25/09/2017 06:44, Wei Wang wrote:
>>
>> +static void update_msr_autoload_count_max(void)
>> +{
>> + u64 vmx_msr;
>> + int n;
>> +
>> + /*
>> + * According to the Intel SDM, if Bits 27:25 of MSR_IA32_VMX_MISC is
>> + * n, then (n + 1) * 512 is the recommended max number of MSRs to be
>> + * included in the VMExit and VMEntry MSR auto switch list.
>> + */
>>...
2017 Sep 25
0
[PATCH v1 1/4] KVM/vmx: re-write the msr auto switch feature
...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->h...
2017 Sep 25
10
[PATCH v1 0/4] Enable LBR for the guest
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
2017 Sep 25
10
[PATCH v1 0/4] Enable LBR for the guest
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
2020 Jul 22
34
[RFC PATCH v1 00/34] VM introspection - EPT Views and Virtualization Exceptions
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