mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
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


  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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20240809194335.1726916-4-seanjc@google.com \
    --to=seanjc@google.com \
    --cc=jthoughton@google.com \
    --cc=kvm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=maz@kernel.org \
    --cc=oliver.upton@linux.dev \
    --cc=pbonzini@redhat.com \
    --cc=peterx@redhat.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox

all inboxes | Powered by JetHome®