linux-kernel - Re: [External] Re: [PATCH v5 0/3] Enable Zicbom in usermode

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Message-ID: <CAEEQ3wnu11zS+C8xfF0-gk0S5Ck-W4Ep8DuqEU-kvgsX_DTSug@mail.gmail.com>
Date: Wed, 26 Feb 2025 19:10:16 +0800
From: yunhui cui <cuiyunhui@...edance.com>
To: Alexandre Ghiti <alexghiti@...osinc.com>
Cc: ajones@...tanamicro.com, andybnac@...il.com, aou@...s.berkeley.edu, 
	charlie@...osinc.com, cleger@...osinc.com, conor.dooley@...rochip.com, 
	conor@...nel.org, corbet@....net, evan@...osinc.com, jesse@...osinc.com, 
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-kselftest@...r.kernel.org, linux-riscv@...ts.infradead.org, 
	palmer@...belt.com, paul.walmsley@...ive.com, samuel.holland@...ive.com, 
	shuah@...nel.org
Subject: Re: [External] Re: [PATCH v5 0/3] Enable Zicbom in usermode

Hi Alex,

On Tue, Feb 25, 2025 at 10:07 PM Alexandre Ghiti <alexghiti@...osinc.com> wrote:
>
> On Tue, Feb 25, 2025 at 2:27 PM yunhui cui <cuiyunhui@...edance.com> wrote:
> >
> > Hi Alex,
> >
> > On Tue, Feb 25, 2025 at 9:21 PM Alexandre Ghiti <alexghiti@...osinc.com> wrote:
> > >
> > > Hi Yunhui,
> > >
> > > On Wed, Jan 15, 2025 at 3:40 AM Yunhui Cui <cuiyunhui@...edance.com> wrote:
> > > >
> > > > v1/v2:
> > > > There is only the first patch: RISC-V: Enable cbo.clean/flush in usermode,
> > > > which mainly removes the enabling of cbo.inval in user mode.
> > > >
> > > > v3:
> > > > Add the functionality of Expose Zicbom and selftests for Zicbom.
> > > >
> > > > v4:
> > > > Modify the order of macros, The test_no_cbo_inval function is added
> > > > separately.
> > > >
> > > > v5:
> > > > 1. Modify the order of RISCV_HWPROBE_KEY_ZICBOM_BLOCK_SIZE in hwprobe.rst
> > > > 2. "TEST_NO_ZICBOINVAL" -> "TEST_NO_CBO_INVAL"
> > > >
> > > > Yunhui Cui (3):
> > > >   RISC-V: Enable cbo.clean/flush in usermode
> > > >   RISC-V: hwprobe: Expose Zicbom extension and its block size
> > > >   RISC-V: selftests: Add TEST_ZICBOM into CBO tests
> > > >
> > > >  Documentation/arch/riscv/hwprobe.rst        |  6 ++
> > > >  arch/riscv/include/asm/hwprobe.h            |  2 +-
> > > >  arch/riscv/include/uapi/asm/hwprobe.h       |  2 +
> > > >  arch/riscv/kernel/cpufeature.c              |  8 +++
> > > >  arch/riscv/kernel/sys_hwprobe.c             |  6 ++
> > > >  tools/testing/selftests/riscv/hwprobe/cbo.c | 66 +++++++++++++++++----
> > > >  6 files changed, 78 insertions(+), 12 deletions(-)
> > > >
> > > > --
> > > > 2.39.2
> > > >
> > >
> > > So a v6 needs to be sent with:
> > >
> > > - the fix for hwprobe_ext0_has() reported by kernel test robot
> > > - a rebase on top of 6.14 since patch 2 will conflict with
> > > RISCV_HWPROBE_KEY_VENDOR_EXT_THEAD_0
> >
> > Thank you for the reminder. In fact, version 6 was sent out almost a
> > month ago. Reference:
> > https://lore.kernel.org/lkml/20250124035959.45499-1-cuiyunhui@bytedance.com/
>
> Oh sorry, I missed it somehow!
>
> I think we can fix RISCV_HWPROBE_MAX_KEY when merging the patch.
>
> Sorry again and thanks!

It's all good. I've rebased a version:
https://lore.kernel.org/all/20250226063206.71216-1-cuiyunhui@bytedance.com/.
Could you help to merge it? Thanks.


>
> Alex
>
> >
> > >
> > > Do you think you can do that soon so that it gets merged in 6.15? The
> > > patchset received a lot of RB so it would be too bad to miss this
> > > release.
> > >
> > > Thanks,
> > >
> > > Alex
> >
> > Thanks,
> > Yunhui

Thanks,
Yunhui