From: Sean Christopherson Date: Thu, 14 Mar 2024 23:26:34 +0000 (-0700) Subject: KVM: selftests: Allocate x86's TSS at VM creation X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=a2834e6e0b98bc89b874aef15c99b23db5f438df;p=linux.git KVM: selftests: Allocate x86's TSS at VM creation Allocate x86's per-VM TSS at creation of a non-barebones VM. Like the GDT, the TSS is needed to actually run vCPUs, i.e. every non-barebones VM is all but guaranteed to allocate the TSS sooner or later. Reviewed-by: Ackerley Tng Link: https://lore.kernel.org/r/20240314232637.2538648-16-seanjc@google.com Signed-off-by: Sean Christopherson --- diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index 72b65eac2df22..9042f7f3330db 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -520,9 +520,6 @@ vm_paddr_t addr_arch_gva2gpa(struct kvm_vm *vm, vm_vaddr_t gva) static void kvm_setup_tss_64bit(struct kvm_vm *vm, struct kvm_segment *segp, int selector) { - if (!vm->arch.tss) - vm->arch.tss = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); - memset(segp, 0, sizeof(*segp)); segp->base = vm->arch.tss; segp->limit = 0x67; @@ -620,6 +617,8 @@ static void vm_init_descriptor_tables(struct kvm_vm *vm) vm->arch.gdt = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); vm->arch.idt = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); vm->handlers = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); + vm->arch.tss = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); + /* Handlers have the same address in both address spaces.*/ for (i = 0; i < NUM_INTERRUPTS; i++) set_idt_entry(vm, i, (unsigned long)(&idt_handlers)[i], 0,