From: Florian Fainelli <f.fainelli@gmail.com>
To: Zaid Al-Bassam <zalbassam@google.com>,
Jesus Sanchez-Palencia <jesussanp@google.com>,
Russell King <linux@armlinux.org.uk>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>,
Marc Zyngier <maz@kernel.org>, James Morse <james.morse@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Oliver Upton <oliver.upton@linux.dev>,
Zenghui Yu <yuzenghui@huawei.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
kvmarm@lists.linux.dev, kvmarm@lists.cs.columbia.edu
Subject: Re: [PATCH v4 0/8] perf: arm: Make PMUv3 driver available for aarch32
Date: Tue, 21 Mar 2023 09:44:57 -0700 [thread overview]
Message-ID: <6f57ea15-08bf-38f3-5065-b3c5fe4863d0@gmail.com> (raw)
In-Reply-To: <20230317195027.3746949-1-zalbassam@google.com>
On 3/17/23 12:50, Zaid Al-Bassam wrote:
> Currently, PMUv3 driver is only available for ARMv8 aarch64 platforms,
> ARMv8 platorms running in aarch32 mode dont have access to the driver.
> This is, especially, a problem for ARMv8 platforms that only have
> aarch32 support, like the Cortex-A32.
>
> Make the PMUv3 driver available to arm arch (ARMv8 aarch32) by moving
> the PMUv3 driver from arm64 to drivers, that makes the driver common
> to both arm and arm64 architectures, then add PMUv3 arm Support.
>
> The main work in this patchset was made a while back by Marc Zyngier
> in [1]. Patchset version 1 [v1] rebases Marc's patches to the latest
> kernel revision and adds additional patches to accommodate the changes
> in the kernel since Marc wrote the patches.
>
> version 2 [v2] of the patchset was created by Marc Zyngier and I
> picked it up from [2].
>
> Changes in v2:
> - Flattened the nested switches in the arm_pmuv3.h for arm.
> - Removed wrappers and added stubs for the PMU KVM functions for arm.
> - Added PMU version abstractions.
>
> Changes in v3:
> - Removed the link tag from the commit messages.
> - Fixed the license header in the arm_pmuv3.h files.
>
> Changes in v4:
> - Rebased to 6.3.0-rc2 (Clean rebase)
>
> [1] https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git/log/?h=kvm-arm/pmuv3-32bit
> [2] https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git/log/?h=arm/pmuv3
>
> [v1] https://lore.kernel.org/all/20230126204444.2204061-1-zalbassam@google.com/
> [v2] https://lore.kernel.org/all/20230210165500.2292608-1-zalbassam@google.com/
> [v3] https://lore.kernel.org/all/20230213210319.1075872-1-zalbassam@google.com/
>
> Thank you,
> Zaid Al-Bassam
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
on Cortex-A53 and Cortex-A72, thanks!
--
Florian
next prev parent reply other threads:[~2023-03-21 16:45 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-17 19:50 [PATCH v4 0/8] perf: arm: Make PMUv3 driver available for aarch32 Zaid Al-Bassam
2023-03-17 19:50 ` [PATCH v4 1/8] arm64: perf: Move PMUv3 driver to drivers/perf Zaid Al-Bassam
2023-03-17 19:50 ` [PATCH v4 2/8] arm64: perf: Abstract system register accesses away Zaid Al-Bassam
2023-03-17 19:50 ` [PATCH v4 3/8] perf: pmuv3: Abstract PMU version checks Zaid Al-Bassam
2023-03-17 19:50 ` [PATCH v4 4/8] perf: pmuv3: Move inclusion of kvm_host.h to the arch-specific helper Zaid Al-Bassam
2023-03-17 19:50 ` [PATCH v4 5/8] perf: pmuv3: Change GENMASK to GENMASK_ULL Zaid Al-Bassam
2023-03-17 19:50 ` [PATCH v4 6/8] ARM: Make CONFIG_CPU_V7 valid for 32bit ARMv8 implementations Zaid Al-Bassam
2023-03-17 19:50 ` [PATCH v4 7/8] ARM: perf: Allow the use of the PMUv3 driver on 32bit ARM Zaid Al-Bassam
2023-03-17 19:50 ` [PATCH v4 8/8] ARM: mach-virt: Select PMUv3 driver by default Zaid Al-Bassam
2023-03-18 10:02 ` [PATCH v4 0/8] perf: arm: Make PMUv3 driver available for aarch32 Marc Zyngier
2023-03-24 13:56 ` Mark Rutland
2023-03-24 18:03 ` Will Deacon
2023-03-21 16:44 ` Florian Fainelli [this message]
2023-03-27 15:01 ` Will Deacon
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