From: Chris Metcalf <cmetcalf@tilera.com>
Date: Sat, 16 Jun 2012 20:53:06 +0000 (-0400)
Subject: tile: fix bug in get_user() for 4-byte values
X-Git-Tag: v3.5-rc3~2^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6699c8cda36f296e315068ed9bbe4f03e6ed4044;p=pandora-kernel.git

tile: fix bug in get_user() for 4-byte values

The definition of 32-bit values in the 64-bit tilegx architecture is that
they should be sign-extended regardless of whether they are considered
signed or unsigned by the compiler.  Accordingly, we need to use an
"ld4s" rather than "ld4u" to load and sign-extend for get_user().

This fixes glibc bug 14238 (see http://sourceware.org/bugzilla),
introduced during the 3.5 merge window.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
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