From: Marc Zyngier <maz@kernel.org>
To: linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org
Cc: "Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Hanjun Guo" <guohanjun@huawei.com>,
"Sudeep Holla" <sudeep.holla@kernel.org>,
"Catalin Marinas" <catalin.marinas@arm.com>,
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"Michal Simek" <michal.simek@amd.com>
Subject: [PATCH v3 00/17] arm64: Use EL2 virtual timer when running VHE
Date: Sat, 23 May 2026 15:02:25 +0100 [thread overview]
Message-ID: <20260523140242.586031-1-maz@kernel.org> (raw)
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
next reply other threads:[~2026-05-23 14:02 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-23 14:02 Marc Zyngier [this message]
2026-05-23 14:02 ` [PATCH v3 01/17] ACPI: GTDT: Account for GTDTv3 size when walking the platform timer descriptors Marc Zyngier
2026-05-23 14:40 ` sashiko-bot
2026-05-26 2:02 ` Hanjun Guo
2026-05-26 8:06 ` Sudeep Holla
2026-05-23 14:02 ` [PATCH v3 02/17] ACPI: GTDT: Parse information related to the EL2 virtual timer Marc Zyngier
2026-05-26 2:14 ` Hanjun Guo
2026-05-23 14:02 ` [PATCH v3 03/17] clocksource/drivers/arm_arch_timer: Default to EL2 virtual timer when running VHE Marc Zyngier
2026-05-23 14:02 ` [PATCH v3 04/17] dt-bindings: timer: arm,arch_timer: Fix requirements for interrupt description Marc Zyngier
2026-05-23 14:24 ` sashiko-bot
2026-05-23 14:02 ` [PATCH v3 05/17] arm64: dts: allwinner: Add EL2 virtual timer interrupt Marc Zyngier
2026-05-23 14:02 ` [PATCH v3 06/17] arm64: dts: amlogic: " Marc Zyngier
2026-05-23 14:02 ` [PATCH v3 07/17] arm64: dts: bst: " Marc Zyngier
2026-05-23 14:02 ` [PATCH v3 08/17] arm64: dts: exynos: " Marc Zyngier
2026-05-24 20:00 ` (subset) " Krzysztof Kozlowski
2026-05-23 14:02 ` [PATCH v3 09/17] arm64: dts: freescale: " Marc Zyngier
2026-05-23 14:02 ` [PATCH v3 10/17] arm64: dts: intel: " Marc Zyngier
2026-05-23 14:02 ` [PATCH v3 11/17] arm64: dts: mediatek: " Marc Zyngier
2026-05-23 14:02 ` [PATCH v3 12/17] arm64: dts: nvidia: " Marc Zyngier
2026-05-23 14:02 ` [PATCH v3 13/17] arm64: dts: qcom: " Marc Zyngier
2026-05-23 14:02 ` [PATCH v3 14/17] arm64: dts: realtek: " Marc Zyngier
2026-05-23 14:20 ` sashiko-bot
2026-05-27 6:36 ` Yu-Chun Lin [林祐君]
2026-05-27 7:05 ` Marc Zyngier
2026-05-23 14:02 ` [PATCH v3 15/17] arm64: dts: rockchip: " Marc Zyngier
2026-05-23 14:02 ` [PATCH v3 16/17] arm64: dts: sprd: " Marc Zyngier
2026-05-23 14:02 ` [PATCH v3 17/17] arm64: dts: xilinx: " Marc Zyngier
2026-05-24 18:17 ` [PATCH v3 00/17] arm64: Use EL2 virtual timer when running VHE Krzysztof Kozlowski
2026-05-24 19:59 ` Marc Zyngier
2026-05-24 20:30 ` (subset) " Chen-Yu Tsai
2026-05-28 23:29 ` Heiko Stuebner
2026-06-02 14:58 ` Marc Zyngier
2026-06-02 16:10 ` Daniel Lezcano
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