diff options
Diffstat (limited to 'tools/testing/selftests/kvm/lib/x86_64/svm.c')
-rw-r--r-- | tools/testing/selftests/kvm/lib/x86_64/svm.c | 43 |
1 files changed, 23 insertions, 20 deletions
diff --git a/tools/testing/selftests/kvm/lib/x86_64/svm.c b/tools/testing/selftests/kvm/lib/x86_64/svm.c index 6e05a8fc3fe0..5495a92dfd5a 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/svm.c +++ b/tools/testing/selftests/kvm/lib/x86_64/svm.c @@ -9,10 +9,11 @@ #include "test_util.h" #include "kvm_util.h" -#include "../kvm_util_internal.h" #include "processor.h" #include "svm_util.h" +#define SEV_DEV_PATH "/dev/sev" + struct gpr64_regs guest_regs; u64 rflags; @@ -30,20 +31,22 @@ u64 rflags; struct svm_test_data * vcpu_alloc_svm(struct kvm_vm *vm, vm_vaddr_t *p_svm_gva) { - vm_vaddr_t svm_gva = vm_vaddr_alloc(vm, getpagesize(), - 0x10000, 0, 0); + vm_vaddr_t svm_gva = vm_vaddr_alloc_page(vm); struct svm_test_data *svm = addr_gva2hva(vm, svm_gva); - svm->vmcb = (void *)vm_vaddr_alloc(vm, getpagesize(), - 0x10000, 0, 0); + svm->vmcb = (void *)vm_vaddr_alloc_page(vm); svm->vmcb_hva = addr_gva2hva(vm, (uintptr_t)svm->vmcb); svm->vmcb_gpa = addr_gva2gpa(vm, (uintptr_t)svm->vmcb); - svm->save_area = (void *)vm_vaddr_alloc(vm, getpagesize(), - 0x10000, 0, 0); + svm->save_area = (void *)vm_vaddr_alloc_page(vm); svm->save_area_hva = addr_gva2hva(vm, (uintptr_t)svm->save_area); svm->save_area_gpa = addr_gva2gpa(vm, (uintptr_t)svm->save_area); + svm->msr = (void *)vm_vaddr_alloc_page(vm); + svm->msr_hva = addr_gva2hva(vm, (uintptr_t)svm->msr); + svm->msr_gpa = addr_gva2gpa(vm, (uintptr_t)svm->msr); + memset(svm->msr_hva, 0, getpagesize()); + *p_svm_gva = svm_gva; return svm; } @@ -74,7 +77,7 @@ void generic_svm_setup(struct svm_test_data *svm, void *guest_rip, void *guest_r wrmsr(MSR_VM_HSAVE_PA, svm->save_area_gpa); memset(vmcb, 0, sizeof(*vmcb)); - asm volatile ("vmsave\n\t" : : "a" (vmcb_gpa) : "memory"); + asm volatile ("vmsave %0\n\t" : : "a" (vmcb_gpa) : "memory"); vmcb_set_seg(&save->es, get_es(), 0, -1U, data_seg_attr); vmcb_set_seg(&save->cs, get_cs(), 0, -1U, code_seg_attr); vmcb_set_seg(&save->ss, get_ss(), 0, -1U, data_seg_attr); @@ -95,6 +98,7 @@ void generic_svm_setup(struct svm_test_data *svm, void *guest_rip, void *guest_r save->dbgctl = rdmsr(MSR_IA32_DEBUGCTLMSR); ctrl->intercept = (1ULL << INTERCEPT_VMRUN) | (1ULL << INTERCEPT_VMMCALL); + ctrl->msrpm_base_pa = svm->msr_gpa; vmcb->save.rip = (u64)guest_rip; vmcb->save.rsp = (u64)guest_rsp; @@ -131,31 +135,30 @@ void generic_svm_setup(struct svm_test_data *svm, void *guest_rip, void *guest_r void run_guest(struct vmcb *vmcb, uint64_t vmcb_gpa) { asm volatile ( - "vmload\n\t" + "vmload %[vmcb_gpa]\n\t" "mov rflags, %%r15\n\t" // rflags "mov %%r15, 0x170(%[vmcb])\n\t" "mov guest_regs, %%r15\n\t" // rax "mov %%r15, 0x1f8(%[vmcb])\n\t" LOAD_GPR_C - "vmrun\n\t" + "vmrun %[vmcb_gpa]\n\t" SAVE_GPR_C "mov 0x170(%[vmcb]), %%r15\n\t" // rflags "mov %%r15, rflags\n\t" "mov 0x1f8(%[vmcb]), %%r15\n\t" // rax "mov %%r15, guest_regs\n\t" - "vmsave\n\t" + "vmsave %[vmcb_gpa]\n\t" : : [vmcb] "r" (vmcb), [vmcb_gpa] "a" (vmcb_gpa) : "r15", "memory"); } -void nested_svm_check_supported(void) +/* + * Open SEV_DEV_PATH if available, otherwise exit the entire program. + * + * Return: + * The opened file descriptor of /dev/sev. + */ +int open_sev_dev_path_or_exit(void) { - struct kvm_cpuid_entry2 *entry = - kvm_get_supported_cpuid_entry(0x80000001); - - if (!(entry->ecx & CPUID_SVM)) { - fprintf(stderr, "nested SVM not enabled, skipping test\n"); - exit(KSFT_SKIP); - } + return open_path_or_exit(SEV_DEV_PATH, 0); } - |