From: Gavin Shan <gshan@redhat.com>
To: kvmarm@lists.linux.dev
Cc: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
peterx@redhat.com, catalin.marinas@arm.com, bgardon@google.com,
shuah@kernel.org, andrew.jones@linux.dev, will@kernel.org,
dmatlack@google.com, pbonzini@redhat.com, zhenyzha@redhat.com,
james.morse@arm.com, suzuki.poulose@arm.com,
alexandru.elisei@arm.com, oliver.upton@linux.dev,
seanjc@google.com, shan.gavin@gmail.com
Subject: [PATCH v5 4/7] KVM: arm64: Enable ring-based dirty memory tracking
Date: Wed, 5 Oct 2022 08:41:51 +0800 [thread overview]
Message-ID: <20221005004154.83502-5-gshan@redhat.com> (raw)
In-Reply-To: <20221005004154.83502-1-gshan@redhat.com>
Enable ring-based dirty memory tracking on arm64 by selecting
CONFIG_HAVE_KVM_DIRTY_RING_ACQ_REL and providing the ring buffer's
physical page offset (KVM_DIRTY_LOG_PAGE_OFFSET).
Signed-off-by: Gavin Shan <gshan@redhat.com>
---
Documentation/virt/kvm/api.rst | 2 +-
arch/arm64/include/uapi/asm/kvm.h | 1 +
arch/arm64/kvm/Kconfig | 1 +
arch/arm64/kvm/arm.c | 3 +++
4 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst
index 4f5e09042f8a..8c6acbb416ee 100644
--- a/Documentation/virt/kvm/api.rst
+++ b/Documentation/virt/kvm/api.rst
@@ -8022,7 +8022,7 @@ regardless of what has actually been exposed through the CPUID leaf.
8.29 KVM_CAP_DIRTY_LOG_{RING, RING_ACQ_REL, RING_ALLOW_BITMAP}
--------------------------------------------------------------
-:Architectures: x86
+:Architectures: x86, arm64
:Parameters: args[0] - size of the dirty log ring
KVM is capable of tracking dirty memory using ring buffers that are
diff --git a/arch/arm64/include/uapi/asm/kvm.h b/arch/arm64/include/uapi/asm/kvm.h
index 316917b98707..a7a857f1784d 100644
--- a/arch/arm64/include/uapi/asm/kvm.h
+++ b/arch/arm64/include/uapi/asm/kvm.h
@@ -43,6 +43,7 @@
#define __KVM_HAVE_VCPU_EVENTS
#define KVM_COALESCED_MMIO_PAGE_OFFSET 1
+#define KVM_DIRTY_LOG_PAGE_OFFSET 64
#define KVM_REG_SIZE(id) \
(1U << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig
index 815cc118c675..095c714b559e 100644
--- a/arch/arm64/kvm/Kconfig
+++ b/arch/arm64/kvm/Kconfig
@@ -32,6 +32,7 @@ menuconfig KVM
select KVM_VFIO
select HAVE_KVM_EVENTFD
select HAVE_KVM_IRQFD
+ select HAVE_KVM_DIRTY_RING_ACQ_REL
select HAVE_KVM_MSI
select HAVE_KVM_IRQCHIP
select HAVE_KVM_IRQ_ROUTING
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 917086be5c6b..53c963a159bc 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -747,6 +747,9 @@ static int check_vcpu_requests(struct kvm_vcpu *vcpu)
if (kvm_check_request(KVM_REQ_SUSPEND, vcpu))
return kvm_vcpu_suspend(vcpu);
+
+ if (kvm_dirty_ring_check_request(vcpu))
+ return 0;
}
return 1;
--
2.23.0
next prev parent reply other threads:[~2022-10-05 0:44 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-05 0:41 [PATCH v5 0/7] KVM: arm64: Enable ring-based dirty memory tracking Gavin Shan
2022-10-05 0:41 ` [PATCH v5 1/7] KVM: x86: Introduce KVM_REQ_RING_SOFT_FULL Gavin Shan
2022-10-05 0:41 ` [PATCH v5 2/7] KVM: x86: Move declaration of kvm_cpu_dirty_log_size() to kvm_dirty_ring.h Gavin Shan
2022-10-05 0:41 ` [PATCH v5 3/7] KVM: x86: Allow to use bitmap in ring-based dirty page tracking Gavin Shan
2022-10-06 20:28 ` Peter Xu
2022-10-06 23:38 ` Gavin Shan
2022-10-07 14:31 ` Peter Xu
2022-10-10 23:18 ` Oliver Upton
2022-10-10 23:43 ` Oliver Upton
2022-10-10 23:49 ` Peter Xu
2022-10-10 23:58 ` Gavin Shan
2022-10-10 23:58 ` Oliver Upton
2022-10-11 0:20 ` Peter Xu
2022-10-11 1:12 ` Oliver Upton
2022-10-11 3:56 ` Gavin Shan
2022-10-11 6:31 ` Gavin Shan
2022-10-14 16:55 ` Peter Xu
2022-10-18 7:38 ` Oliver Upton
2022-10-18 7:40 ` Oliver Upton
2022-10-18 15:50 ` Peter Xu
2022-10-05 0:41 ` Gavin Shan [this message]
2022-10-05 0:41 ` [PATCH v5 5/7] KVM: selftests: Use host page size to map ring buffer in dirty_log_test Gavin Shan
2022-10-05 0:41 ` [PATCH v5 6/7] KVM: selftests: Clear dirty ring states between two modes " Gavin Shan
2022-10-05 0:41 ` [PATCH v5 7/7] KVM: selftests: Automate choosing dirty ring size " Gavin Shan
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