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

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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: James Houghton <jthoughton@google.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20241128005547.4077116-7-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Sean Christopherson 2024-11-27 16:55:37 -08:00
parent b12391498d
commit 55e164df48
1 changed files with 3 additions and 3 deletions
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6
tools/testing/selftests/kvm/mmu_stress_test.c
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@ -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);