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From: Leonardo Bras <leo.bras@arm.com>
To: "Catalin Marinas" <catalin.marinas@arm.com>,
	"Will Deacon" <will@kernel.org>, "Marc Zyngier" <maz@kernel.org>,
	"Oliver Upton" <oupton@kernel.org>,
	"Joey Gouly" <joey.gouly@arm.com>,
	"Steffen Eiden" <seiden@linux.ibm.com>,
	"Suzuki K Poulose" <suzuki.poulose@arm.com>,
	"Zenghui Yu" <yuzenghui@huawei.com>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	"Len Brown" <lenb@kernel.org>,
	"Saket Dumbre" <saket.dumbre@intel.com>,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"Jonathan Cameron" <jic23@kernel.org>,
	"Chengwen Feng" <fengchengwen@huawei.com>,
	"Leonardo Bras" <leo.bras@arm.com>, "Kees Cook" <kees@kernel.org>,
	"Mikołaj Lenczewski" <miko.lenczewski@arm.com>,
	"James Morse" <james.morse@arm.com>,
	"Zeng Heng" <zengheng4@huawei.com>,
	mrigendrachaubey <mrigendra.chaubey@gmail.com>,
	"Thomas Huth" <thuth@redhat.com>,
	"Ryan Roberts" <ryan.roberts@arm.com>,
	"Yeoreum Yun" <yeoreum.yun@arm.com>,
	"Mark Brown" <broonie@kernel.org>,
	"Kevin Brodsky" <kevin.brodsky@arm.com>,
	"James Clark" <james.clark@linaro.org>,
	"Fuad Tabba" <tabba@google.com>,
	"Raghavendra Rao Ananta" <rananta@google.com>,
	"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
	"Sascha Bischoff" <Sascha.Bischoff@arm.com>,
	"Anshuman Khandual" <anshuman.khandual@arm.com>,
	"Tian Zheng" <zhengtian10@huawei.com>
Cc: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev,
	linux-acpi@vger.kernel.org, acpica-devel@lists.linux.dev,
	kvm@vger.kernel.org
Subject: [PATCH v2 13/13] KVM: arm64: Enable KVM_HW_DIRTY_BIT
Date: Mon, 29 Jun 2026 12:18:01 +0100	[thread overview]
Message-ID: <20260629111820.1873540-14-leo.bras@arm.com> (raw)
In-Reply-To: <20260629111820.1873540-1-leo.bras@arm.com>

Set the corresponding bit to enable hardware accelerated dirty-bitmap and
dirty-ring cleaning for arm64. Actually using acceleration depends on the
cpus enabling FEAT_HACDBS as well as the pre-requisite features for it,
such as FEAT_HDBSS and FEAT_HAFDBS.

Signed-off-by: Leonardo Bras <leo.bras@arm.com>
---
 arch/arm64/kvm/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig
index 449154f9a485..db8487bf738b 100644
--- a/arch/arm64/kvm/Kconfig
+++ b/arch/arm64/kvm/Kconfig
@@ -27,20 +27,21 @@ menuconfig KVM
 	select VIRT_XFER_TO_GUEST_WORK
 	select KVM_VFIO
 	select HAVE_KVM_DIRTY_RING_ACQ_REL
 	select NEED_KVM_DIRTY_RING_WITH_BITMAP
 	select HAVE_KVM_MSI
 	select HAVE_KVM_IRQCHIP
 	select HAVE_KVM_IRQ_ROUTING
 	select HAVE_KVM_IRQ_BYPASS
 	select HAVE_KVM_READONLY_MEM
 	select HAVE_KVM_VCPU_RUN_PID_CHANGE
+	select HAVE_KVM_HW_DIRTY_BIT if ACPI
 	select SCHED_INFO
 	select GUEST_PERF_EVENTS if PERF_EVENTS
 	select KVM_GUEST_MEMFD
 	help
 	  Support hosting virtualized guest machines.
 
 	  If unsure, say N.
 
 if KVM
 
-- 
2.54.0



      parent reply	other threads:[~2026-06-29 11:19 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-29 11:17 [PATCH v2 00/13] KVM Dirty-bit cleaning hw accelerator (HACDBS) Leonardo Bras
2026-06-29 11:17 ` [PATCH v2 01/13] KVM: arm64: HDBSS bits Leonardo Bras
2026-06-29 11:17 ` [PATCH v2 02/13] KVM: arm64: Enable eager hugepage splitting if HDBSS is available Leonardo Bras
2026-06-29 11:17 ` [PATCH v2 03/13] arm64/cpufeature: Add system-wide FEAT_HACDBS detection Leonardo Bras
2026-06-29 11:17 ` [PATCH v2 04/13] arm64/sysreg: Add HACDBS consumer and base registers Leonardo Bras
2026-06-29 11:17 ` [PATCH v2 05/13] KVM: arm64: Detect (via ACPI) and initialize HACDBSIRQ Leonardo Bras
2026-06-29 17:22   ` Oliver Upton
2026-06-30 14:50     ` Leonardo Bras
2026-06-30 16:03       ` Oliver Upton
2026-06-30 17:19         ` Leonardo Bras
2026-06-29 11:17 ` [PATCH v2 06/13] KVM: arm64: dirty_bit: Add base FEAT_HACDBS cleaning routine Leonardo Bras
2026-06-29 17:36   ` Oliver Upton
2026-06-30 14:59     ` Leonardo Bras
2026-06-30 19:06       ` Oliver Upton
2026-07-01 10:47         ` Leonardo Bras
2026-06-29 11:17 ` [PATCH v2 07/13] kvm: Add arch-generic interface for hw-accelerated dirty-bitmap cleaning Leonardo Bras
2026-06-29 11:17 ` [PATCH v2 08/13] KVM: arm64: Add hardware-accelerated dirty-bitmap cleaning routine Leonardo Bras
2026-06-29 11:17 ` [PATCH v2 09/13] KVM: arm64: Dirty-bitmap: avoid splitting previously split blocks Leonardo Bras
2026-06-29 11:17 ` [PATCH v2 10/13] kvm/dirty_ring: Introduce get_memslot and move helpers to header Leonardo Bras
2026-06-29 11:17 ` [PATCH v2 11/13] kvm/dirty_ring: Add arch-generic interface for hw-accelerated dirty-ring cleaning Leonardo Bras
2026-06-29 11:18 ` [PATCH v2 12/13] KVM: arm64: Add hardware-accelerated dirty-ring cleaning routine Leonardo Bras
2026-06-29 11:18 ` Leonardo Bras [this message]

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