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

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <CAHVXubhCOivB8oxG7gcCNKTfK0DgHdu721SxsyGX2E4XAjbi6w@mail.gmail.com>
Date: Tue, 25 Feb 2025 15:07:23 +0100
From: Alexandre Ghiti <alexghiti@...osinc.com>
To: yunhui cui <cuiyunhui@...edance.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

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!

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