From: Sean Christopherson <seanjc@google.com>
To: Sean Christopherson <seanjc@google.com>,
Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
Oliver Upton <oliver.upton@linux.dev>,
Marc Zyngier <maz@kernel.org>, Peter Xu <peterx@redhat.com>,
James Houghton <jthoughton@google.com>
Subject: [PATCH 03/22] KVM: selftests: Only muck with SREGS on x86 in mmu_stress_test
Date: Fri, 9 Aug 2024 12:43:15 -0700 [thread overview]
Message-ID: <20240809194335.1726916-4-seanjc@google.com> (raw)
In-Reply-To: <20240809194335.1726916-1-seanjc@google.com>
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.
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
tools/testing/selftests/kvm/mmu_stress_test.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/tools/testing/selftests/kvm/mmu_stress_test.c b/tools/testing/selftests/kvm/mmu_stress_test.c
index 0b9678858b6d..847da23ec1b1 100644
--- a/tools/testing/selftests/kvm/mmu_stress_test.c
+++ b/tools/testing/selftests/kvm/mmu_stress_test.c
@@ -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();
+#ifdef __x86_64__
vcpu_sregs_get(vcpu, &sregs);
-#ifdef __x86_64__
/* 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);
--
2.46.0.76.ge559c4bf1a-goog
next prev parent reply other threads:[~2024-08-09 19:43 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-09 19:43 [PATCH 00/22] KVM: x86/mmu: Allow yielding on mmu_notifier zap Sean Christopherson
2024-08-09 19:43 ` [PATCH 01/22] KVM: selftests: Check for a potential unhandled exception iff KVM_RUN succeeded Sean Christopherson
2024-08-09 19:43 ` [PATCH 02/22] KVM: selftests: Rename max_guest_memory_test to mmu_stress_test Sean Christopherson
2024-08-09 19:43 ` Sean Christopherson [this message]
2024-08-09 19:43 ` [PATCH 04/22] KVM: selftests: Compute number of extra pages needed in mmu_stress_test Sean Christopherson
2024-09-06 0:03 ` James Houghton
2024-09-06 4:42 ` Sean Christopherson
2024-09-06 18:25 ` James Houghton
2024-08-09 19:43 ` [PATCH 05/22] KVM: selftests: Enable mmu_stress_test on arm64 Sean Christopherson
2024-08-09 19:43 ` [PATCH 06/22] KVM: selftests: Use vcpu_arch_put_guest() in mmu_stress_test Sean Christopherson
2024-08-09 19:43 ` [PATCH 07/22] KVM: selftests: Precisely limit the number of guest loops " Sean Christopherson
2024-08-09 19:43 ` [PATCH 08/22] KVM: selftests: Add a read-only mprotect() phase to mmu_stress_test Sean Christopherson
2024-08-09 19:43 ` [PATCH 09/22] KVM: selftests: Verify KVM correctly handles mprotect(PROT_READ) Sean Christopherson
[not found] ` <CADrL8HXcD--jn1iLeCJycCd3Btv4_rBPxz6NMnTREXfeh0vRZA@mail.gmail.com>
2024-09-07 0:53 ` Sean Christopherson
2024-09-07 2:26 ` James Houghton
2024-09-09 15:49 ` Sean Christopherson
2024-08-09 19:43 ` [PATCH 10/22] KVM: x86/mmu: Move walk_slot_rmaps() up near for_each_slot_rmap_range() Sean Christopherson
2024-08-28 18:20 ` Sean Christopherson
2024-08-09 19:43 ` [PATCH 11/22] KVM: x86/mmu: Plumb a @can_yield parameter into __walk_slot_rmaps() Sean Christopherson
2024-08-09 19:43 ` [PATCH 12/22] KVM: x86/mmu: Add a helper to walk and zap rmaps for a memslot Sean Christopherson
2024-08-09 19:43 ` [PATCH 13/22] KVM: x86/mmu: Honor NEED_RESCHED when zapping rmaps and blocking is allowed Sean Christopherson
2024-08-09 19:43 ` [PATCH 14/22] KVM: x86/mmu: Morph kvm_handle_gfn_range() into an aging specific helper Sean Christopherson
2024-08-12 21:53 ` David Matlack
2024-08-12 21:58 ` David Matlack
2024-08-09 19:43 ` [PATCH 15/22] KVM: x86/mmu: Fold mmu_spte_age() into kvm_rmap_age_gfn_range() Sean Christopherson
2024-08-09 19:43 ` [PATCH 16/22] KVM: x86/mmu: Add KVM_RMAP_MANY to replace open coded '1' and '1ul' literals Sean Christopherson
2024-08-09 19:43 ` [PATCH 17/22] KVM: x86/mmu: Refactor low level rmap helpers to prep for walking w/o mmu_lock Sean Christopherson
2024-08-09 19:43 ` [PATCH 18/22] KVM: x86/mmu: Use KVM_PAGES_PER_HPAGE() instead of an open coded equivalent Sean Christopherson
2024-08-09 19:43 ` [PATCH 19/22] KVM: x86/mmu: Add infrastructure to allow walking rmaps outside of mmu_lock Sean Christopherson
2024-08-12 8:39 ` Lai Jiangshan
2024-08-12 15:22 ` Sean Christopherson
2024-08-13 6:35 ` Lai Jiangshan
2024-08-13 15:19 ` Sean Christopherson
2024-09-03 20:17 ` James Houghton
2024-09-03 21:27 ` Sean Christopherson
2024-09-03 21:40 ` James Houghton
2024-09-09 19:00 ` James Houghton
2024-09-09 20:02 ` Sean Christopherson
2024-09-09 20:46 ` James Houghton
2024-09-09 22:02 ` Sean Christopherson
2024-09-10 0:28 ` James Houghton
2024-09-10 1:42 ` Sean Christopherson
2024-09-10 21:11 ` James Houghton
2024-09-11 15:33 ` Sean Christopherson
2024-08-09 19:43 ` [PATCH 20/22] KVM: x86/mmu: Add support for lockless walks of rmap SPTEs Sean Christopherson
2024-08-09 19:43 ` [PATCH 21/22] KVM: x86/mmu: Support rmap walks without holding mmu_lock when aging gfns Sean Christopherson
2024-09-03 20:36 ` James Houghton
2024-09-04 15:48 ` Sean Christopherson
2024-08-09 19:43 ` [PATCH 22/22] ***HACK*** KVM: x86: Don't take " Sean Christopherson
2024-09-10 4:56 ` [PATCH 00/22] KVM: x86/mmu: Allow yielding on mmu_notifier zap Sean Christopherson
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