From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 477913537E8; Sat, 23 May 2026 14:02:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779544978; cv=none; b=kWOEPSNXVKlUbQP00WBOMZ4FJhyWI+IDRbKDkhSg0EFH3TPp0n9EXwmk363tmiDXvvwPIWf+k8CnwHsR9H84evPREYMTRyt4zKCUAWKZ3E109DMCchvLN6k6oGVD6zBQuMr8G0iB2lcbW4iMlPpPGT75JdFPXdwPfzlUVnio1K0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779544978; c=relaxed/simple; bh=XcI9E99lmjEqc67YZwRW1EoV9W6z7lpLdUqdqu0gSKY=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=gqDu5r0hXIUxKxa0NXIUEhoPfnT899sF2zXo5GCBlnx5isUnmJBW1yqkuPR0hHrfK1Ba6gK4RY160Ipe4OebG2IPAU3G5fkRJ3r1R3IMud5vyvifCo/yLIbdc90vsr3nfHLXm4OAnr2dMZXTj39exYylXloAd5VkPg1GnLy9cvQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=TNxmWDzS; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="TNxmWDzS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5FDEC1F000E9; Sat, 23 May 2026 14:02:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1779544975; bh=iKSF8GdN2oB/rm7vq210aNx19r8g8NagqG/cGhDvljI=; h=From:To:Cc:Subject:Date; b=TNxmWDzSY4CjGL/jSWZD1X7AQsa7sQupIw81htXWcH07NZ+54yTlD/isc1MRCcUZ8 LP922+wccqoF34JeE0Hic5ZcMjNaDmOvek63gVv5Jj55bC+2F4/nISUuukXF5l6sZw fJ0pu63wSupJ+tq9rPW102ZFsAlaUv2m2ZS0siy5HsVV+JxnbqQfnbLU0CGbWpDVDj BPocMK66phJqIVZzTqXIgXN5NrI4t5zn/8fznt/ojVOjNha6vfJq9dBq9b49canjJy MK/ghvVNfzgkZ3KdPmoMbJGUvlqvwrqXgQuhIWmsM8M9qbCKy/12RD3xEY6NqJyxJ6 BWmHMjtW26YUQ== Received: from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1wQmwG-00000005YFc-3f2t; Sat, 23 May 2026 14:02:52 +0000 From: Marc Zyngier To: linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Cc: Lorenzo Pieralisi , Hanjun Guo , Sudeep Holla , Catalin Marinas , Will Deacon , "Rafael J. Wysocki" , Mark Rutland , Daniel Lezcano , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Ge Gordon , BST Linux Kernel Upstream Group , Jesper Nilsson , Lars Persson , Alim Akhtar , Ivaylo Ivanov , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Dinh Nguyen , Matthias Brugger , AngeloGioacchino Del Regno , Thierry Reding , Jonathan Hunter , Bjorn Andersson , Konrad Dybcio , =?UTF-8?q?Andreas=20F=C3=A4rber?= , =?UTF-8?q?Yu-Chun=20Lin=20=5B=E6=9E=97=E7=A5=90=E5=90=9B=5D?= , Heiko Stuebner , Shawn Lin , Orson Zhai , Baolin Wang , Michal Simek Subject: [PATCH v3 00/17] arm64: Use EL2 virtual timer when running VHE Date: Sat, 23 May 2026 15:02:25 +0100 Message-ID: <20260523140242.586031-1-maz@kernel.org> X-Mailer: git-send-email 2.47.3 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, lpieralisi@kernel.org, guohanjun@huawei.com, sudeep.holla@kernel.org, catalin.marinas@arm.com, will@kernel.org, rafael@kernel.org, mark.rutland@arm.com, daniel.lezcano@kernel.org, tglx@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, wens@kernel.org, jernej.skrabec@gmail.com, samuel@sholland.org, neil.armstrong@linaro.org, khilman@baylibre.com, jbrunet@baylibre.com, martin.blumenstingl@googlemail.com, gordon.ge@bst.ai, bst-upstream@bstai.top, jesper.nilsson@axis.com, lars.persson@axis.com, alim.akhtar@samsung.com, ivo.ivanov.ivanov1@gmail.com, Frank.Li@nxp.com, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, dinguyen@kernel.org, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, thierry.reding@kernel.org, jonathanh@nvidia.com, andersson@kernel.org, konradybcio@kernel.org, afaerber@suse.de, eleanor.lin@realtek.com, heiko@sntech.de, shawn.lin@rock-chips.com, orsonzhai@gmail.com, baolin.wang@linux.alibaba.com, michal.simek@amd.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false This is the third version of the series initially posted at [1], which - updates the ACPI GTDT parsing to deal the v3 layout and the EL2 virtual timer, - moves the architected timer driver to use it when running VHE, - fixes a number of DTs to reflect the reality of the HW. This results in significant performance uplift in deeper nested virt scenarios, at no overhead to the host. Patches based on -rc3, tested on Amlogic SM1, QC X1E, Ampere Altra, and Apple M2, as well as KVM NV guests. * From v2 [2]: - Add more consistency checks to the GTDT parsing - Match the virtual counter when using the KVM PTP backend - Drop a number of changes to Qualcomm DTs, being only tangentially related and that will be posted separately - Fix the Realtek Kent platform, which had the GICv3 maintenance interrupt advertised as the EL2 virtual timer - Collected TBs and RBs, with thanks * From v1 [2]: - Now also using the EL2 virtual counter, which further improve things when running at a deeper nesting level - Updated consistency checks for the platform timers when finding a GTDTv3 - Collected ABs and RBs, with thanks [1] https://lore.kernel.org/r/20260507125544.2903406-1-maz@kernel.org [2] https://lore.kernel.org/r/20260514150945.3917510-1-maz@kernel.org Marc Zyngier (17): ACPI: GTDT: Account for GTDTv3 size when walking the platform timer descriptors ACPI: GTDT: Parse information related to the EL2 virtual timer clocksource/drivers/arm_arch_timer: Default to EL2 virtual timer when running VHE dt-bindings: timer: arm,arch_timer: Fix requirements for interrupt description arm64: dts: allwinner: Add EL2 virtual timer interrupt arm64: dts: amlogic: Add EL2 virtual timer interrupt arm64: dts: bst: Add EL2 virtual timer interrupt arm64: dts: exynos: Add EL2 virtual timer interrupt arm64: dts: freescale: Add EL2 virtual timer interrupt arm64: dts: intel: Add EL2 virtual timer interrupt arm64: dts: mediatek: Add EL2 virtual timer interrupt arm64: dts: nvidia: Add EL2 virtual timer interrupt arm64: dts: qcom: Add EL2 virtual timer interrupt arm64: dts: realtek: Add EL2 virtual timer interrupt arm64: dts: rockchip: Add EL2 virtual timer interrupt arm64: dts: sprd: Add EL2 virtual timer interrupt arm64: dts: xilinx: Add EL2 virtual timer interrupt .../bindings/timer/arm,arch_timer.yaml | 21 +++---- .../arm64/boot/dts/allwinner/sun55i-a523.dtsi | 3 +- .../boot/dts/amlogic/amlogic-a4-common.dtsi | 8 --- arch/arm64/boot/dts/amlogic/amlogic-a4.dtsi | 8 +++ arch/arm64/boot/dts/amlogic/amlogic-a5.dtsi | 9 +++ arch/arm64/boot/dts/amlogic/amlogic-s6.dtsi | 3 +- arch/arm64/boot/dts/amlogic/amlogic-s7.dtsi | 3 +- arch/arm64/boot/dts/amlogic/amlogic-s7d.dtsi | 3 +- .../boot/dts/amlogic/meson-g12-common.dtsi | 13 ----- arch/arm64/boot/dts/amlogic/meson-g12.dtsi | 9 +++ arch/arm64/boot/dts/amlogic/meson-sm1.dtsi | 10 ++++ arch/arm64/boot/dts/bst/bstc1200.dtsi | 3 +- arch/arm64/boot/dts/exynos/axis/artpec9.dtsi | 3 +- arch/arm64/boot/dts/exynos/exynos2200.dtsi | 3 +- arch/arm64/boot/dts/exynos/exynos990.dtsi | 3 +- arch/arm64/boot/dts/exynos/exynosautov9.dtsi | 3 +- arch/arm64/boot/dts/exynos/google/gs101.dtsi | 3 +- .../boot/dts/freescale/imx91_93_common.dtsi | 3 +- arch/arm64/boot/dts/freescale/imx94.dtsi | 3 +- arch/arm64/boot/dts/freescale/imx95.dtsi | 3 +- arch/arm64/boot/dts/freescale/imx952.dtsi | 3 +- arch/arm64/boot/dts/freescale/s32n79.dtsi | 3 +- .../arm64/boot/dts/intel/socfpga_agilex5.dtsi | 3 +- arch/arm64/boot/dts/mediatek/mt6779.dtsi | 3 +- arch/arm64/boot/dts/mediatek/mt8186.dtsi | 3 +- arch/arm64/boot/dts/mediatek/mt8188.dtsi | 3 +- arch/arm64/boot/dts/mediatek/mt8192.dtsi | 3 +- arch/arm64/boot/dts/mediatek/mt8195.dtsi | 3 +- arch/arm64/boot/dts/nvidia/tegra194.dtsi | 2 + arch/arm64/boot/dts/nvidia/tegra234.dtsi | 3 +- arch/arm64/boot/dts/qcom/eliza.dtsi | 3 +- arch/arm64/boot/dts/qcom/hamoa.dtsi | 3 +- arch/arm64/boot/dts/qcom/kaanapali.dtsi | 3 +- arch/arm64/boot/dts/qcom/kodiak.dtsi | 3 +- arch/arm64/boot/dts/qcom/lemans.dtsi | 3 +- arch/arm64/boot/dts/qcom/monaco.dtsi | 3 +- arch/arm64/boot/dts/qcom/sar2130p.dtsi | 3 +- arch/arm64/boot/dts/qcom/sc8280xp.dtsi | 3 +- arch/arm64/boot/dts/qcom/sm4450.dtsi | 3 +- arch/arm64/boot/dts/qcom/sm8250.dtsi | 3 +- arch/arm64/boot/dts/qcom/sm8350.dtsi | 3 +- arch/arm64/boot/dts/qcom/sm8450.dtsi | 3 +- arch/arm64/boot/dts/qcom/sm8550.dtsi | 3 +- arch/arm64/boot/dts/qcom/sm8650.dtsi | 3 +- arch/arm64/boot/dts/qcom/sm8750.dtsi | 3 +- arch/arm64/boot/dts/realtek/kent.dtsi | 2 +- arch/arm64/boot/dts/realtek/rtd16xx.dtsi | 3 +- arch/arm64/boot/dts/rockchip/rk356x-base.dtsi | 3 +- arch/arm64/boot/dts/sprd/sc9863a.dtsi | 3 +- arch/arm64/boot/dts/sprd/ums512.dtsi | 3 +- arch/arm64/boot/dts/sprd/ums9620.dtsi | 3 +- arch/arm64/boot/dts/xilinx/versal-net.dtsi | 3 +- drivers/acpi/arm64/gtdt.c | 42 +++++++++++++- drivers/clocksource/arm_arch_timer.c | 55 +++++++++++-------- 54 files changed, 206 insertions(+), 102 deletions(-) -- 2.47.3