From: Kees Cook <keescook@chromium.org>
To: Florian Weimer <fweimer@redhat.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
linux-api@vger.kernel.org, x86@kernel.org
Subject: Re: [PATCH v2] ELF: supply userspace with available page shifts (AT_PAGE_SHIFT_MASK)
Date: Wed, 6 Dec 2023 13:09:01 -0800 [thread overview]
Message-ID: <202312061308.630C56CCA@keescook> (raw)
In-Reply-To: <87edfzavof.fsf@oldenburg.str.redhat.com>
On Wed, Dec 06, 2023 at 10:05:36PM +0100, Florian Weimer wrote:
> * Kees Cook:
>
> > On Tue, Dec 05, 2023 at 07:01:34PM +0300, Alexey Dobriyan wrote:
> >> Report available page shifts in arch independent manner, so that
> >> userspace developers won't have to parse /proc/cpuinfo hunting
> >> for arch specific strings:
> >>
> >> Note!
> >>
> >> This is strictly for userspace, if some page size is shutdown due
> >> to kernel command line option or CPU bug workaround, than is must not
> >> be reported in aux vector!
> >
> > Given Florian in CC, I assume this is something glibc would like to be
> > using? Please mention this in the commit log.
>
> Nope, I just wrote a random drive-by comment on the first version.
Ah, okay. Then Alexey, who do you expect to be the consumer of this new
AT value?
--
Kees Cook
next prev parent reply other threads:[~2023-12-06 21:09 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-04 17:18 [PATCH] ELF: supply userspace with available page shifts (AT_PAGE_SHIFT_LIST) Alexey Dobriyan
2023-12-05 9:51 ` Florian Weimer
2023-12-05 14:26 ` Alexey Dobriyan
2023-12-05 16:01 ` [PATCH v2] ELF: supply userspace with available page shifts (AT_PAGE_SHIFT_MASK) Alexey Dobriyan
2023-12-06 20:47 ` Kees Cook
2023-12-06 21:05 ` Florian Weimer
2023-12-06 21:09 ` Kees Cook [this message]
2023-12-07 15:04 ` Alexey Dobriyan
2023-12-07 14:57 ` Alexey Dobriyan
2023-12-07 15:32 ` Florian Weimer
2023-12-08 18:29 ` Kees Cook
2023-12-08 18:35 ` Florian Weimer
2023-12-08 18:38 ` Kees Cook
2023-12-09 9:44 ` Alexey Dobriyan
2023-12-07 18:44 ` [PATCH v3] ELF: AT_PAGE_SHIFT_MASK -- supply userspace with available page shifts Alexey Dobriyan
2023-12-12 21:09 ` Kees Cook
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