Commit 44c93b27 authored by Sean Christopherson's avatar Sean Christopherson
Browse files

KVM: selftests: Map x86's exception_handlers at VM creation, not vCPU setup 



Map x86's exception handlers at VM creation, not vCPU setup, as the
mapping is per-VM, i.e. doesn't need to be (re)done for every vCPU.

Reviewed-by: default avatarAckerley Tng <ackerleytng@google.com>
Link: https://lore.kernel.org/r/20240314232637.2538648-12-seanjc@google.com


Signed-off-by: default avatarSean Christopherson <seanjc@google.com>
parent c1b9793b

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

+2 −1
Original line number Diff line number Diff line
@@ -553,7 +553,6 @@ static void vcpu_init_descriptor_tables(struct kvm_vcpu *vcpu) 
	sregs.gdt.limit = getpagesize() - 1;

	kvm_seg_set_kernel_data_64bit(NULL, DEFAULT_DATA_SELECTOR, &sregs.gs);

	vcpu_sregs_set(vcpu, &sregs);

	*(vm_vaddr_t *)addr_gva2hva(vm, (vm_vaddr_t)(&exception_handlers)) = vm->handlers;

}



static void vcpu_init_sregs(struct kvm_vm *vm, struct kvm_vcpu *vcpu)
@@ -652,6 +651,8 @@ static void vm_init_descriptor_tables(struct kvm_vm *vm) 
	for (i = 0; i < NUM_INTERRUPTS; i++)

		set_idt_entry(vm, i, (unsigned long)(&idt_handlers)[i], 0,

			DEFAULT_CODE_SELECTOR);



	*(vm_vaddr_t *)addr_gva2hva(vm, (vm_vaddr_t)(&exception_handlers)) = vm->handlers;

}



void vm_install_exception_handler(struct kvm_vm *vm, int vector,