From: Andrew Morton <akpm@linux-foundation.org>
To: Peter Collingbourne <pcc@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
Dave Martin <Dave.Martin@arm.com>, Will Deacon <will@kernel.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Alistair Delva <adelva@google.com>,
Lokesh Gidra <lokeshgidra@google.com>,
William McVicker <willmcvicker@google.com>,
Evgenii Stepanov <eugenis@google.com>,
Mitch Phillips <mitchp@google.com>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
linux-mm@kvack.org, Andrey Konovalov <andreyknvl@gmail.com>,
stable@vger.kernel.org
Subject: Re: [PATCH v4 2/2] selftest: use mmap instead of posix_memalign to allocate memory
Date: Fri, 9 Jul 2021 16:27:42 -0700 [thread overview]
Message-ID: <20210709162742.ee10cac911a6304e97ab1b5e@linux-foundation.org> (raw)
In-Reply-To: <20210707184313.3697385-3-pcc@google.com>
On Wed, 7 Jul 2021 11:43:13 -0700 Peter Collingbourne <pcc@google.com> wrote:
> This test passes pointers obtained from anon_allocate_area to the
> userfaultfd and mremap APIs. This causes a problem if the system
> allocator returns tagged pointers because with the tagged address ABI
> the kernel rejects tagged addresses passed to these APIs, which would
> end up causing the test to fail. To make this test compatible with
> such system allocators, stop using the system allocator to allocate
> memory in anon_allocate_area, and instead just use mmap.
Doesn't apply to current mainline. Can you please resync and redo?
> Co-developed-by: Lokesh Gidra <lokeshgidra@google.com>
> Signed-off-by: Lokesh Gidra <lokeshgidra@google.com>
> Signed-off-by: Peter Collingbourne <pcc@google.com>
> Fixes: c47174fc362a ("userfaultfd: selftest")
> Cc: <stable@vger.kernel.org> # 5.4
This patch then won't apply to earlier kenrels, so please be prepared
to help Greg resolve this.
prev parent reply other threads:[~2021-07-09 23:27 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-07 18:43 [PATCH v4 0/2] userfaultfd: do not untag user pointers Peter Collingbourne
2021-07-07 18:43 ` [PATCH v4 1/2] " Peter Collingbourne
2021-07-08 12:58 ` Catalin Marinas
2021-07-07 18:43 ` [PATCH v4 2/2] selftest: use mmap instead of posix_memalign to allocate memory Peter Collingbourne
2021-07-08 12:59 ` Catalin Marinas
2021-07-09 23:27 ` Andrew Morton [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210709162742.ee10cac911a6304e97ab1b5e@linux-foundation.org \
--to=akpm@linux-foundation.org \
--cc=Dave.Martin@arm.com \
--cc=aarcange@redhat.com \
--cc=adelva@google.com \
--cc=andreyknvl@gmail.com \
--cc=catalin.marinas@arm.com \
--cc=eugenis@google.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-mm@kvack.org \
--cc=lokeshgidra@google.com \
--cc=mitchp@google.com \
--cc=pcc@google.com \
--cc=stable@vger.kernel.org \
--cc=vincenzo.frascino@arm.com \
--cc=will@kernel.org \
--cc=willmcvicker@google.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox