Commit a2834e6e authored by Sean Christopherson's avatar Sean Christopherson
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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: default avatarAckerley Tng <ackerleytng@google.com>
Link: https://lore.kernel.org/r/20240314232637.2538648-16-seanjc@google.com


Signed-off-by: default avatarSean Christopherson <seanjc@google.com>
parent 23ef21f5

tools/testing/selftests/kvm/lib/x86_64/processor.c

+2 −3
Original line number Diff line number Diff line
@@ -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,