Run another round of debug_regs test with FRED enabled if FRED is available.
Signed-off-by: Xin Li xin3.li@intel.com --- .../selftests/kvm/include/x86_64/processor.h | 4 ++ .../testing/selftests/kvm/x86_64/debug_regs.c | 50 ++++++++++++++----- 2 files changed, 41 insertions(+), 13 deletions(-)
diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h index 25bc61dac5fb..165d21fd1577 100644 --- a/tools/testing/selftests/kvm/include/x86_64/processor.h +++ b/tools/testing/selftests/kvm/include/x86_64/processor.h @@ -47,6 +47,7 @@ extern bool host_cpu_is_amd; #define X86_CR4_SMEP (1ul << 20) #define X86_CR4_SMAP (1ul << 21) #define X86_CR4_PKE (1ul << 22) +#define X86_CR4_FRED (1ul << 32)
struct xstate_header { u64 xstate_bv; @@ -163,6 +164,9 @@ struct kvm_x86_cpu_feature { #define X86_FEATURE_SPEC_CTRL KVM_X86_CPU_FEATURE(0x7, 0, EDX, 26) #define X86_FEATURE_ARCH_CAPABILITIES KVM_X86_CPU_FEATURE(0x7, 0, EDX, 29) #define X86_FEATURE_PKS KVM_X86_CPU_FEATURE(0x7, 0, ECX, 31) +#define X86_FEATURE_FRED KVM_X86_CPU_FEATURE(0x7, 1, EAX, 17) +#define X86_FEATURE_LKGS KVM_X86_CPU_FEATURE(0x7, 1, EAX, 18) +#define X86_FEATURE_WRMSRNS KVM_X86_CPU_FEATURE(0x7, 1, EAX, 19) #define X86_FEATURE_XTILECFG KVM_X86_CPU_FEATURE(0xD, 0, EAX, 17) #define X86_FEATURE_XTILEDATA KVM_X86_CPU_FEATURE(0xD, 0, EAX, 18) #define X86_FEATURE_XSAVES KVM_X86_CPU_FEATURE(0xD, 1, EAX, 3) diff --git a/tools/testing/selftests/kvm/x86_64/debug_regs.c b/tools/testing/selftests/kvm/x86_64/debug_regs.c index f6b295e0b2d2..69055e764f15 100644 --- a/tools/testing/selftests/kvm/x86_64/debug_regs.c +++ b/tools/testing/selftests/kvm/x86_64/debug_regs.c @@ -20,7 +20,7 @@ uint32_t guest_value;
extern unsigned char sw_bp, hw_bp, write_data, ss_start, bd_start;
-static void guest_code(void) +static void guest_test_code(void) { /* Create a pending interrupt on current vCPU */ x2apic_enable(); @@ -61,6 +61,15 @@ static void guest_code(void)
/* DR6.BD test */ asm volatile("bd_start: mov %%dr0, %%rax" : : : "rax"); +} + +static void guest_code(void) +{ + guest_test_code(); + + if (get_cr4() & X86_CR4_FRED) + guest_test_code(); + GUEST_DONE(); }
@@ -75,19 +84,15 @@ static void vcpu_skip_insn(struct kvm_vcpu *vcpu, int insn_len) vcpu_regs_set(vcpu, ®s); }
-int main(void) +void run_test(struct kvm_vcpu *vcpu) { struct kvm_guest_debug debug; + struct kvm_run *run = vcpu->run; unsigned long long target_dr6, target_rip; - struct kvm_vcpu *vcpu; - struct kvm_run *run; - struct kvm_vm *vm; - struct ucall uc; - uint64_t cmd; int i; /* Instruction lengths starting at ss_start */ int ss_size[6] = { - 1, /* sti*/ + 1, /* sti */ 2, /* xor */ 2, /* cpuid */ 5, /* mov */ @@ -95,11 +100,6 @@ int main(void) 1, /* cli */ };
- TEST_REQUIRE(kvm_has_cap(KVM_CAP_SET_GUEST_DEBUG)); - - vm = vm_create_with_one_vcpu(&vcpu, guest_code); - run = vcpu->run; - /* Test software BPs - int3 */ memset(&debug, 0, sizeof(debug)); debug.control = KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP; @@ -202,6 +202,30 @@ int main(void) /* Disable all debug controls, run to the end */ memset(&debug, 0, sizeof(debug)); vcpu_guest_debug_set(vcpu, &debug); +} + +int main(void) +{ + struct kvm_vcpu *vcpu; + struct kvm_vm *vm; + struct ucall uc; + uint64_t cmd; + + TEST_REQUIRE(kvm_has_cap(KVM_CAP_SET_GUEST_DEBUG)); + + vm = vm_create_with_one_vcpu(&vcpu, guest_code); + + run_test(vcpu); + + if (kvm_cpu_has(X86_FEATURE_FRED)) { + struct kvm_sregs sregs; + + vcpu_sregs_get(vcpu, &sregs); + sregs.cr4 |= X86_CR4_FRED; + vcpu_sregs_set(vcpu, &sregs); + + run_test(vcpu); + }
vcpu_run(vcpu); TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_IO);