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

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Message-ID: <CAEEQ3wkeLrTFVqVZEAYSsROSLHzkC-EeKvuPHmW=qH3CxamwhA@mail.gmail.com>
Date: Tue, 25 Feb 2025 21:27:00 +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 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/

>
> 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