diff options
Diffstat (limited to 'tools/testing/selftests/kvm/x86/sev_smoke_test.c')
| -rw-r--r-- | tools/testing/selftests/kvm/x86/sev_smoke_test.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/x86/sev_smoke_test.c b/tools/testing/selftests/kvm/x86/sev_smoke_test.c index 86ad1c7d068f..8bd37a476f15 100644 --- a/tools/testing/selftests/kvm/x86/sev_smoke_test.c +++ b/tools/testing/selftests/kvm/x86/sev_smoke_test.c @@ -13,6 +13,30 @@ #include "linux/psp-sev.h" #include "sev.h" +static void guest_sev_test_msr(uint32_t msr) +{ + uint64_t val = rdmsr(msr); + + wrmsr(msr, val); + GUEST_ASSERT(val == rdmsr(msr)); +} + +#define guest_sev_test_reg(reg) \ +do { \ + uint64_t val = get_##reg(); \ + \ + set_##reg(val); \ + GUEST_ASSERT(val == get_##reg()); \ +} while (0) + +static void guest_sev_test_regs(void) +{ + guest_sev_test_msr(MSR_EFER); + guest_sev_test_reg(cr0); + guest_sev_test_reg(cr3); + guest_sev_test_reg(cr4); + guest_sev_test_reg(cr8); +} #define XFEATURE_MASK_X87_AVX (XFEATURE_MASK_FP | XFEATURE_MASK_SSE | XFEATURE_MASK_YMM) @@ -24,6 +48,8 @@ static void guest_snp_code(void) GUEST_ASSERT(sev_msr & MSR_AMD64_SEV_ES_ENABLED); GUEST_ASSERT(sev_msr & MSR_AMD64_SEV_SNP_ENABLED); + guest_sev_test_regs(); + wrmsr(MSR_AMD64_SEV_ES_GHCB, GHCB_MSR_TERM_REQ); vmgexit(); } @@ -34,6 +60,8 @@ static void guest_sev_es_code(void) GUEST_ASSERT(rdmsr(MSR_AMD64_SEV) & MSR_AMD64_SEV_ENABLED); GUEST_ASSERT(rdmsr(MSR_AMD64_SEV) & MSR_AMD64_SEV_ES_ENABLED); + guest_sev_test_regs(); + /* * TODO: Add GHCB and ucall support for SEV-ES guests. For now, simply * force "termination" to signal "done" via the GHCB MSR protocol. @@ -47,6 +75,8 @@ static void guest_sev_code(void) GUEST_ASSERT(this_cpu_has(X86_FEATURE_SEV)); GUEST_ASSERT(rdmsr(MSR_AMD64_SEV) & MSR_AMD64_SEV_ENABLED); + guest_sev_test_regs(); + GUEST_DONE(); } |