From: Jamie Lokier <jamie@shareable.org>
To: Peter Horton <pdh@colonel-panic.org>
Cc: linux-mips@linux-mips.org, linux-kernel@vger.kernel.org
Subject: Re: Possible shared mapping bug in 2.4.23 (at least MIPS/Sparc)
Date: Sat, 13 Dec 2003 22:26:26 +0000 [thread overview]
Message-ID: <20031213222626.GA20153@mail.shareable.org> (raw)
In-Reply-To: <20031213114134.GA9896@skeleton-jack>
Peter Horton wrote:
> A quick look at sparc and sparc64 seem to show the same problem.
D-cache incoherence with unsuitably aligned multiple MAP_FIXED
mappings is also observed on SH4, SH5, PA-RISC 1.1d. The kernel may
have the same behaviour on those platforms: allowing a mapping that
should not be allowed.
On some ARM and m68k boxes, incoherence is observed independent of
alignment, for multiple mappings of a page in the same user memory
space.
-- Jamie
next prev parent reply other threads:[~2003-12-13 22:27 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-13 11:41 Possible shared mapping bug in 2.4.23 (at least MIPS/Sparc) Peter Horton
2003-12-13 16:05 ` Ralf Baechle
2003-12-13 18:08 ` Peter Horton
2003-12-13 22:26 ` Jamie Lokier [this message]
2003-12-14 1:41 ` Linus Torvalds
2003-12-14 4:20 ` Jamie Lokier
2003-12-14 10:38 ` Peter Horton
2003-12-14 17:16 ` Jamie Lokier
2003-12-25 13:03 ` Ralf Baechle
2003-12-14 18:05 ` Linus Torvalds
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