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KVM: selftests: add Enlightened VMCS test

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Modify test library and add eVMCS test. This includes nVMX save/restore
testing.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Vitaly Kuznetsov
2018-10-16 18:50:11 +02:00
committed by Paolo Bonzini
parent c939989d74
commit 18178ff862
5 changed files with 1321 additions and 10 deletions
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1098
tools/testing/selftests/kvm/include/evmcs.h Normal file
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File diff suppressed because it is too large Load Diff

28
tools/testing/selftests/kvm/include/x86_64/vmx.h
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@@ -339,6 +339,8 @@ struct vmx_msr_entry {
uint64_t value;
} __attribute__ ((aligned(16)));
#include "evmcs.h"
static inline int vmxon(uint64_t phys)
{
uint8_t ret;
@@ -372,6 +374,9 @@ static inline int vmptrld(uint64_t vmcs_pa)
{
uint8_t ret;
if (enable_evmcs)
return -1;
__asm__ __volatile__ ("vmptrld %[pa]; setna %[ret]"
: [ret]"=rm"(ret)
: [pa]"m"(vmcs_pa)
@@ -385,6 +390,9 @@ static inline int vmptrst(uint64_t *value)
uint64_t tmp;
uint8_t ret;
if (enable_evmcs)
return evmcs_vmptrst(value);
__asm__ __volatile__("vmptrst %[value]; setna %[ret]"
: [value]"=m"(tmp), [ret]"=rm"(ret)
: : "cc", "memory");
@@ -411,6 +419,9 @@ static inline int vmlaunch(void)
{
int ret;
if (enable_evmcs)
return evmcs_vmlaunch();
__asm__ __volatile__("push %%rbp;"
"push %%rcx;"
"push %%rdx;"
@@ -443,6 +454,9 @@ static inline int vmresume(void)
{
int ret;
if (enable_evmcs)
return evmcs_vmresume();
__asm__ __volatile__("push %%rbp;"
"push %%rcx;"
"push %%rdx;"
@@ -482,6 +496,9 @@ static inline int vmread(uint64_t encoding, uint64_t *value)
uint64_t tmp;
uint8_t ret;
if (enable_evmcs)
return evmcs_vmread(encoding, value);
__asm__ __volatile__("vmread %[encoding], %[value]; setna %[ret]"
: [value]"=rm"(tmp), [ret]"=rm"(ret)
: [encoding]"r"(encoding)
@@ -506,6 +523,9 @@ static inline int vmwrite(uint64_t encoding, uint64_t value)
{
uint8_t ret;
if (enable_evmcs)
return evmcs_vmwrite(encoding, value);
__asm__ __volatile__ ("vmwrite %[value], %[encoding]; setna %[ret]"
: [ret]"=rm"(ret)
: [value]"rm"(value), [encoding]"r"(encoding)
@@ -543,6 +563,14 @@ struct vmx_pages {
void *vmwrite_hva;
uint64_t vmwrite_gpa;
void *vmwrite;
void *vp_assist_hva;
uint64_t vp_assist_gpa;
void *vp_assist;
void *enlightened_vmcs_hva;
uint64_t enlightened_vmcs_gpa;
void *enlightened_vmcs;
};
struct vmx_pages *vcpu_alloc_vmx(struct kvm_vm *vm, vm_vaddr_t *p_vmx_gva);