From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3EDF2C54F51 for ; Wed, 29 Jul 2026 10:47:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=K02Zc2FPpwU1iNxboRFAfwSxbZJokRwSrilQtmz2Fa0=; b=nJnuQTnJJT/T2arOEDtnJZFc3t K0r+UD8hj6y3xghdvgDelkZpOQYmGbKCyjH2eloppLRWJSYzQuX3osNANP9YR6thwPJ5NeMv43s90 52tIltopiG9F/Xh3sbJjWhPHJphqUUpkiv5oILna0/PgOo0+bdq02e5l3XrXEom6HPXYGd2xTIKEn 1YdggmR2lX35mjpwXbkP5subNAU/RXs1v9Anh6YT7qoZqddrsNGG2Q82oM/gHHFfZJJl0gTvJLX2v w7NWW7F6UsTvf3RZlMLSzsTs7xicxGaicA25+btpfUzALsR0QUtB6kjdMBWjyHbLe5igSs1Lq4YOb LykO+1xA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wp1ok-00000007amG-1hOA; Wed, 29 Jul 2026 10:47:18 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wp1ob-00000007afZ-194V for linux-arm-kernel@lists.infradead.org; Wed, 29 Jul 2026 10:47:10 +0000 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 7B5251688; Wed, 29 Jul 2026 03:47:04 -0700 (PDT) Received: from LeoBrasDK.cambridge.arm.com (LeoBrasDK.cambridge.arm.com [10.2.212.21]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id BA4873F66F; Wed, 29 Jul 2026 03:47:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1785322028; bh=wA/Gf0BWpFp54XV49Ev6GaOvlsiX9alXZSU5n1DJWp0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PYl86dk18O21VeaNfvwB9P48elqISXA6MMUK7aFacADEjoTGzb9Cc9RHnzMTkMuNw qYsDdnFh/XknOC8Z3qGqn2gL9FWX25/KsIglfKDlM0LwWy3pQjMKkZ+Mnr+q0UJY0x EjhSMDmDJzCBdAq3wZIEoaroRJbGcXYw9ErU506E= From: Leonardo Bras To: Catalin Marinas , Will Deacon , Marc Zyngier , Oliver Upton , Fuad Tabba , Joey Gouly , Steffen Eiden , Suzuki K Poulose , Zenghui Yu , Paolo Bonzini , James Morse , Leonardo Bras , Yang Shi , mrigendrachaubey , Thomas Huth , Zeng Heng , Ryan Roberts , Mark Brown , Sascha Bischoff , Yicong Yang , Kevin Brodsky , James Clark , Raghavendra Rao Ananta , Yeoreum Yun , Mark Rutland , Anshuman Khandual , Tian Zheng Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org Subject: [PATCH v3 11/11] KVM: arm64: Enable KVM_HW_DIRTY_BIT Date: Wed, 29 Jul 2026 11:45:46 +0100 Message-ID: <20260729104548.3439958-12-leo.bras@arm.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260729104548.3439958-1-leo.bras@arm.com> References: <20260729104548.3439958-1-leo.bras@arm.com> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1129; i=leo.bras@arm.com; h=from:subject; bh=wA/Gf0BWpFp54XV49Ev6GaOvlsiX9alXZSU5n1DJWp0=; b=owGbwMvMwCX2pizjszvTwvWMp9WSGLIyb14/4ia3/+0W29hPflf/yqSeaDNcoKejJDdBuyXt2 5WlB8/+7yhlYRDjYpAVU2SRfTR/Fc/3KRlHrvxYADOHlQlkCAMXpwBMxKaVkeH3pp3XZs5c+6Kd 4f9921rDP/KmesLXt2vkzdxY9LD0kr4xI8OXpQ+ZAj3mnlDfJxRhaNR3LvSp0sGGoK+7KhNnT0v f2sYOAA== X-Developer-Key: i=leo.bras@arm.com; a=openpgp; fpr=36E6C95AE0F111CC5B6F4D2E688C33F8A0C5B0C5 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260729_034709_355340_EE564249 X-CRM114-Status: UNSURE ( 9.13 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 --- arch/arm64/kvm/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig index 449154f9a485..3264d8ca093e 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 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 -- 2.55.0