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From: Marc Zyngier <maz@kernel.org>
To: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org
Cc: will@kernel.org, catalin.marinas@arm.com, andrew.jones@linux.dev,
	shan.gavin@gmail.com, bgardon@google.com, dmatlack@google.com,
	pbonzini@redhat.com, zhenyzha@redhat.com, shuah@kernel.org
Subject: [PATCH v2 6/6] KVM: selftests: dirty-log: Use KVM_CAP_DIRTY_LOG_RING_ACQ_REL if available
Date: Mon, 26 Sep 2022 15:51:20 +0100	[thread overview]
Message-ID: <20220926145120.27974-7-maz@kernel.org> (raw)
In-Reply-To: <20220926145120.27974-1-maz@kernel.org>

Pick KVM_CAP_DIRTY_LOG_RING_ACQ_REL if exposed by the kernel.

Signed-off-by: Marc Zyngier <maz@kernel.org>
---
 tools/testing/selftests/kvm/dirty_log_test.c | 3 ++-
 tools/testing/selftests/kvm/lib/kvm_util.c   | 5 ++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/kvm/dirty_log_test.c b/tools/testing/selftests/kvm/dirty_log_test.c
index 53627add8a7c..b5234d6efbe1 100644
--- a/tools/testing/selftests/kvm/dirty_log_test.c
+++ b/tools/testing/selftests/kvm/dirty_log_test.c
@@ -265,7 +265,8 @@ static void default_after_vcpu_run(struct kvm_vcpu *vcpu, int ret, int err)
 
 static bool dirty_ring_supported(void)
 {
-	return kvm_has_cap(KVM_CAP_DIRTY_LOG_RING);
+	return (kvm_has_cap(KVM_CAP_DIRTY_LOG_RING) ||
+		kvm_has_cap(KVM_CAP_DIRTY_LOG_RING_ACQ_REL));
 }
 
 static void dirty_ring_create_vm_done(struct kvm_vm *vm)
diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
index 9889fe0d8919..411a4c0bc81c 100644
--- a/tools/testing/selftests/kvm/lib/kvm_util.c
+++ b/tools/testing/selftests/kvm/lib/kvm_util.c
@@ -82,7 +82,10 @@ unsigned int kvm_check_cap(long cap)
 
 void vm_enable_dirty_ring(struct kvm_vm *vm, uint32_t ring_size)
 {
-	vm_enable_cap(vm, KVM_CAP_DIRTY_LOG_RING, ring_size);
+	if (vm_check_cap(vm, KVM_CAP_DIRTY_LOG_RING_ACQ_REL))
+		vm_enable_cap(vm, KVM_CAP_DIRTY_LOG_RING_ACQ_REL, ring_size);
+	else
+		vm_enable_cap(vm, KVM_CAP_DIRTY_LOG_RING, ring_size);
 	vm->dirty_ring_size = ring_size;
 }
 
-- 
2.34.1

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WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <maz@kernel.org>
To: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org
Cc: catalin.marinas@arm.com, bgardon@google.com, shuah@kernel.org,
	andrew.jones@linux.dev, will@kernel.org, dmatlack@google.com,
	peterx@redhat.com, pbonzini@redhat.com, zhenyzha@redhat.com,
	shan.gavin@gmail.com, gshan@redhat.com,
	James Morse <james.morse@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Alexandru Elisei <alexandru.elisei@arm.com>,
	Oliver Upton <oliver.upton@linux.dev>
Subject: [PATCH v2 6/6] KVM: selftests: dirty-log: Use KVM_CAP_DIRTY_LOG_RING_ACQ_REL if available
Date: Mon, 26 Sep 2022 15:51:20 +0100	[thread overview]
Message-ID: <20220926145120.27974-7-maz@kernel.org> (raw)
In-Reply-To: <20220926145120.27974-1-maz@kernel.org>

Pick KVM_CAP_DIRTY_LOG_RING_ACQ_REL if exposed by the kernel.

Signed-off-by: Marc Zyngier <maz@kernel.org>
---
 tools/testing/selftests/kvm/dirty_log_test.c | 3 ++-
 tools/testing/selftests/kvm/lib/kvm_util.c   | 5 ++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/kvm/dirty_log_test.c b/tools/testing/selftests/kvm/dirty_log_test.c
index 53627add8a7c..b5234d6efbe1 100644
--- a/tools/testing/selftests/kvm/dirty_log_test.c
+++ b/tools/testing/selftests/kvm/dirty_log_test.c
@@ -265,7 +265,8 @@ static void default_after_vcpu_run(struct kvm_vcpu *vcpu, int ret, int err)
 
 static bool dirty_ring_supported(void)
 {
-	return kvm_has_cap(KVM_CAP_DIRTY_LOG_RING);
+	return (kvm_has_cap(KVM_CAP_DIRTY_LOG_RING) ||
+		kvm_has_cap(KVM_CAP_DIRTY_LOG_RING_ACQ_REL));
 }
 
 static void dirty_ring_create_vm_done(struct kvm_vm *vm)
diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
index 9889fe0d8919..411a4c0bc81c 100644
--- a/tools/testing/selftests/kvm/lib/kvm_util.c
+++ b/tools/testing/selftests/kvm/lib/kvm_util.c
@@ -82,7 +82,10 @@ unsigned int kvm_check_cap(long cap)
 
 void vm_enable_dirty_ring(struct kvm_vm *vm, uint32_t ring_size)
 {
-	vm_enable_cap(vm, KVM_CAP_DIRTY_LOG_RING, ring_size);
+	if (vm_check_cap(vm, KVM_CAP_DIRTY_LOG_RING_ACQ_REL))
+		vm_enable_cap(vm, KVM_CAP_DIRTY_LOG_RING_ACQ_REL, ring_size);
+	else
+		vm_enable_cap(vm, KVM_CAP_DIRTY_LOG_RING, ring_size);
 	vm->dirty_ring_size = ring_size;
 }
 
-- 
2.34.1


  parent reply	other threads:[~2022-09-26 14:51 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-26 14:51 [PATCH v2 0/6] KVM: Fix dirty-ring ordering on weakly ordered architectures Marc Zyngier
2022-09-26 14:51 ` Marc Zyngier
2022-09-26 14:51 ` [PATCH v2 1/6] KVM: Use acquire/release semantics when accessing dirty ring GFN state Marc Zyngier
2022-09-26 14:51   ` Marc Zyngier
2022-09-26 14:51 ` [PATCH v2 2/6] KVM: Add KVM_CAP_DIRTY_LOG_RING_ACQ_REL capability and config option Marc Zyngier
2022-09-26 14:51   ` Marc Zyngier
2022-09-26 14:51 ` [PATCH v2 3/6] KVM: x86: Select CONFIG_HAVE_KVM_DIRTY_RING_ACQ_REL Marc Zyngier
2022-09-26 14:51   ` Marc Zyngier
2022-09-26 14:51 ` [PATCH v2 4/6] KVM: Document weakly ordered architecture requirements for dirty ring Marc Zyngier
2022-09-26 14:51   ` Marc Zyngier
2022-09-26 14:51 ` [PATCH v2 5/6] KVM: selftests: dirty-log: Upgrade flag accesses to acquire/release semantics Marc Zyngier
2022-09-26 14:51   ` Marc Zyngier
2022-09-26 14:51 ` Marc Zyngier [this message]
2022-09-26 14:51   ` [PATCH v2 6/6] KVM: selftests: dirty-log: Use KVM_CAP_DIRTY_LOG_RING_ACQ_REL if available Marc Zyngier
2022-09-27  0:58 ` [PATCH v2 0/6] KVM: Fix dirty-ring ordering on weakly ordered architectures Gavin Shan
2022-09-27  0:58   ` Gavin Shan
2022-09-27 15:54 ` Peter Xu
2022-09-27 15:54   ` Peter Xu
2022-09-29  9:58 ` Marc Zyngier
2022-09-29  9:58   ` Marc Zyngier

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