lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Message-ID: <20230324180329.GB27948@willie-the-truck> Date: Fri, 24 Mar 2023 18:03:30 +0000 From: Will Deacon <will@...nel.org> To: Mark Rutland <mark.rutland@....com> Cc: Marc Zyngier <maz@...nel.org>, Zaid Al-Bassam <zalbassam@...gle.com>, Jesus Sanchez-Palencia <jesussanp@...gle.com>, Russell King <linux@...linux.org.uk>, Catalin Marinas <catalin.marinas@....com>, Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, Arnaldo Carvalho de Melo <acme@...nel.org>, Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, Namhyung Kim <namhyung@...nel.org>, James Morse <james.morse@....com>, Suzuki K Poulose <suzuki.poulose@....com>, Oliver Upton <oliver.upton@...ux.dev>, Zenghui Yu <yuzenghui@...wei.com>, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org, kvmarm@...ts.linux.dev, kvmarm@...ts.cs.columbia.edu, "f.fainelli@...il.comm Anshuman Khandual" <anshuman.khandual@....com> Subject: Re: [PATCH v4 0/8] perf: arm: Make PMUv3 driver available for aarch32 On Fri, Mar 24, 2023 at 01:56:42PM +0000, Mark Rutland wrote: > On Sat, Mar 18, 2023 at 10:02:33AM +0000, Marc Zyngier wrote: > > On Fri, 17 Mar 2023 19:50:19 +0000, > > Zaid Al-Bassam <zalbassam@...gle.com> 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]. > > > > The SoB chain is now a bit off as you picked it from my tree. Nothing > > that we can't fix, but please be careful in the future. You also > > failed to pick Florian's Tested-by: tags, which is worse. Please make > > sure to pick these things as people reply to your series. > > > > Will, Mark: any objection to the general shape of this series? I've > > been using it again to test the 32bit PMU support in KVM, and would > > rather see something merged while the architecture still has some > > relevance. > > I think the general shape looks fine, but this is going to conflict with > Anshuman's BRBE series, so we'll need to figure out how to stage these w.r.t. > one another. > > Will, any preference between handling the merge manually or rebasing one atop > the other? We'll presumably want to place the BRBE files under drivers/perf/ if > we've moved the PMUv3 code there. Probably easiest to queue this and have Anshuman rebase BRBE on top once I've done that. I'll look at it next week. Will
Powered by blists - more mailing lists