[PATCH 12/18] KVM: selftests: Allocate x86's GDT during VM creation

Sean Christopherson seanjc at google.com
Thu Mar 14 16:26:31 PDT 2024


Allocate the GDT during creation of non-barebones VMs instead of waiting
until the first vCPU is created, as the whole point of non-barebones VMs
is to be able to run vCPUs, i.e. the GDT is going to get allocated no
matter what.

Signed-off-by: Sean Christopherson <seanjc at google.com>
---
 tools/testing/selftests/kvm/lib/x86_64/processor.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c
index f4046029f168..8547833ffa26 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/processor.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c
@@ -518,9 +518,6 @@ vm_paddr_t addr_arch_gva2gpa(struct kvm_vm *vm, vm_vaddr_t gva)
 
 static void kvm_setup_gdt(struct kvm_vm *vm, struct kvm_dtable *dt)
 {
-	if (!vm->arch.gdt)
-		vm->arch.gdt = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA);
-
 	dt->base = vm->arch.gdt;
 	dt->limit = getpagesize() - 1;
 }
@@ -644,6 +641,7 @@ static void vm_init_descriptor_tables(struct kvm_vm *vm)
 	extern void *idt_handlers;
 	int i;
 
+	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);
 	/* Handlers have the same address in both address spaces.*/
-- 
2.44.0.291.gc1ea87d7ee-goog




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