Commit 55e164df authored by Sean Christopherson's avatar Sean Christopherson
Browse files

KVM: selftests: Only muck with SREGS on x86 in mmu_stress_test 



Try to get/set SREGS in mmu_stress_test only when running on x86, as the
ioctls are supported only by x86 and PPC, and the latter doesn't yet
support KVM selftests.

Reviewed-by: default avatarJames Houghton <jthoughton@google.com>
Reviewed-by: default avatarAndrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20241128005547.4077116-7-seanjc@google.com


Signed-off-by: default avatarSean Christopherson <seanjc@google.com>
parent b1239149

tools/testing/selftests/kvm/mmu_stress_test.c

+3 −3
Original line number Diff line number Diff line
@@ -59,10 +59,10 @@ static void run_vcpu(struct kvm_vcpu *vcpu) 


static void *vcpu_worker(void *data)

{

	struct kvm_sregs __maybe_unused sregs;

	struct vcpu_info *info = data;

	struct kvm_vcpu *vcpu = info->vcpu;

	struct kvm_vm *vm = vcpu->vm;

	struct kvm_sregs sregs;



	vcpu_args_set(vcpu, 3, info->start_gpa, info->end_gpa, vm->page_size);
@@ -70,12 +70,12 @@ static void *vcpu_worker(void *data) 


	run_vcpu(vcpu);

	rendezvous_with_boss();

	vcpu_sregs_get(vcpu, &sregs);

#ifdef __x86_64__

	vcpu_sregs_get(vcpu, &sregs);

	/* Toggle CR0.WP to trigger a MMU context reset. */

	sregs.cr0 ^= X86_CR0_WP;

#endif

	vcpu_sregs_set(vcpu, &sregs);

#endif

	rendezvous_with_boss();



	run_vcpu(vcpu);