From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id E66BC42189A; Thu, 30 Apr 2026 11:16:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777547777; cv=none; b=IduPVITu9xr3GOaIyfKqmh5q6KxP05KgF2aL8ykTKZ8C9I+lzRoHFQVGU7os1WxZoxq4zkLz61Q6l6mizEbg1NIJhRjajc0ojecEsucY8q2MMDJG2mutEMdPJqSoYoUhPCkdrySFNvPZJZn9I5LmHvh5PmizuCQzOXw0eV5Yv+A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777547777; c=relaxed/simple; bh=/RURBevpFF+4tw+ka7Tw3QDbKLsEWw0aWfJtqGVfHwQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZVhPfrKwqGOVMD7s6GxhYxCIp/wB8UeV3h9wgrWXj5nwJOcA7PMd5cW7xMXpePkPwwzKyZIFWW2oD0OjXLmKXiX1gRfjTnzjRJKG37gfAvDA6tdBIkIDM0zaDiDIoL9eH6ljKVOYLGp5ZH/8yMNtBo2dq2tM1cwe8RBUeFQs8/o= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=Dg83rIEn; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="Dg83rIEn" Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 0DC61356C; Thu, 30 Apr 2026 04:16:10 -0700 (PDT) Received: from devkitleo.cambridge.arm.com (devkitleo.cambridge.arm.com [10.1.196.90]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 18E533F763; Thu, 30 Apr 2026 04:16:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1777547775; bh=/RURBevpFF+4tw+ka7Tw3QDbKLsEWw0aWfJtqGVfHwQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Dg83rIEnCnvnNNd90W6UyyYmALfyt5w3xkYcgsMDx7kJQnSLWr+aI1bKWqOcI7gUb f3YA79bgia7x7C+As0zyTHsMVTPe98UnOnrZcgz57AqdzZNuP3ALca1cAQCPqPWKxP gHZ6XNUy68+rW5XuA+jTKVIrUYB6Ky9olnogHKH4= From: Leonardo Bras To: Catalin Marinas , Will Deacon , Leonardo Bras , Marc Zyngier , Oliver Upton , Joey Gouly , Suzuki K Poulose , Zenghui Yu , "Rafael J. Wysocki" , Len Brown , Saket Dumbre , Paolo Bonzini , Chengwen Feng , Jonathan Cameron , Kees Cook , =?UTF-8?q?Miko=C5=82aj=20Lenczewski?= , Ryan Roberts , Yang Shi , Thomas Huth , mrigendrachaubey , Yeoreum Yun , Mark Brown , Kevin Brodsky , James Clark , Ard Biesheuvel , Fuad Tabba , Raghavendra Rao Ananta , Nathan Chancellor , Vincent Donnefort , Lorenzo Pieralisi , Sascha Bischoff , Anshuman Khandual , Tian Zheng , Wei-Lin Chang Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-acpi@vger.kernel.org, acpica-devel@lists.linux.dev, kvm@vger.kernel.org Subject: [PATCH v1 12/12] KVM: arm64: Enable KVM_HW_DIRTY_BIT Date: Thu, 30 Apr 2026 12:14:16 +0100 Message-ID: <20260430111424.3479613-14-leo.bras@arm.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260430111424.3479613-2-leo.bras@arm.com> References: <20260430111424.3479613-2-leo.bras@arm.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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. Also, add myself as maintainer for the new bits introduced. Signed-off-by: Leonardo Bras --- MAINTAINERS | 7 +++++++ arch/arm64/kvm/Kconfig | 1 + 2 files changed, 8 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index d25342ca8aa1..4b8a2b05b916 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2069,20 +2069,27 @@ F: arch/arm64/boot/dts/Makefile ARM ARCHITECTED TIMER DRIVER M: Mark Rutland M: Marc Zyngier L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) S: Maintained F: arch/arm/include/asm/arch_timer.h F: arch/arm64/include/asm/arch_timer.h F: drivers/clocksource/arm_arch_timer.c F: drivers/clocksource/arm_arch_timer_mmio.c +ARM STAGE-2 DIRTY-BIT TRACKER/CLEANER ACCELERATOR +M: Leonardo Bras +L: kvmarm@lists.linux.dev +S: Maintained +F: arch/arm64/include/asm/kvm_dirty_bit.h +F: arch/arm64/kvm/dirty_bit.c + ARM ETHOS-U NPU DRIVER M: Rob Herring (Arm) M: Tomeu Vizoso L: dri-devel@lists.freedesktop.org S: Supported T: git https://gitlab.freedesktop.org/drm/misc/kernel.git F: drivers/accel/ethosu/ F: include/uapi/drm/ethosu_accel.h ARM GENERIC INTERRUPT CONTROLLER DRIVERS 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