From: Jeremy Kerr <jk@ozlabs.org>
To: Christoph Hellwig <hch@lst.de>
Cc: Arnd Bergmann <arnd@arndb.de>,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
"Eric W . Biederman" <ebiederm@xmission.com>,
linux-fsdevel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Alexander Viro <viro@zeniv.linux.org.uk>
Subject: Re: [RFC PATCH] powerpc/spufs: fix copy_to_user while atomic
Date: Wed, 29 Apr 2020 14:33:13 +0800 [thread overview]
Message-ID: <2014678ca837f6aaa4cf23b4ea51e4805146c36d.camel@ozlabs.org> (raw)
In-Reply-To: <20200429061514.GD30946@lst.de>
Hi Christoph,
> And another one that should go on top of this one to address Al's other
> compaint:
Yeah, I was pondering that one. The access_ok() is kinda redundant, but
it does avoid forcing a SPU context save on those errors.
However, it's not like we really need to optimise for the case of
invalid addresses from userspace. So, I'll include this change in the
submission to Michael's tree. Arnd - let me know if you have any
objections.
Cheers,
Jeremy
next prev parent reply other threads:[~2020-04-29 6:44 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-27 20:06 remove set_fs calls from the coredump code v4 Christoph Hellwig
2020-04-27 20:06 ` [PATCH 1/5] powerpc/spufs: simplify spufs core dumping Christoph Hellwig
2020-04-27 20:49 ` Al Viro
2020-04-28 2:51 ` Jeremy Kerr
2020-04-28 6:57 ` Christoph Hellwig
2020-04-28 12:02 ` [RFC PATCH] powerpc/spufs: fix copy_to_user while atomic Jeremy Kerr
2020-04-28 13:54 ` Christoph Hellwig
2020-04-28 16:00 ` Arnd Bergmann
2020-04-28 17:11 ` Christoph Hellwig
2020-04-29 1:36 ` Jeremy Kerr
2020-04-29 6:05 ` Christoph Hellwig
2020-04-29 6:13 ` Christoph Hellwig
2020-04-29 6:15 ` Christoph Hellwig
2020-04-29 6:33 ` Jeremy Kerr [this message]
2020-04-29 7:42 ` Arnd Bergmann
2020-04-27 20:06 ` [PATCH 2/5] signal: factor copy_siginfo_to_external32 from copy_siginfo_to_user32 Christoph Hellwig
2020-04-27 20:06 ` [PATCH 3/5] binfmt_elf: remove the set_fs in fill_siginfo_note Christoph Hellwig
2020-04-27 20:06 ` [PATCH 4/5] binfmt_elf: remove the set_fs(KERNEL_DS) in elf_core_dump Christoph Hellwig
2020-04-27 20:06 ` [PATCH 5/5] binfmt_elf_fdpic: remove the set_fs(KERNEL_DS) in elf_fdpic_core_dump Christoph Hellwig
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