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Message-Id: <1425635874-19087-129-git-send-email-luis.henriques@canonical.com> Date: Fri, 6 Mar 2015 09:56:59 +0000 From: Luis Henriques <luis.henriques@...onical.com> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org, kernel-team@...ts.ubuntu.com Cc: Paul Burton <paul.burton@...tec.com>, "Maciej W. Rozycki" <macro@...ux-mips.org>, Markos Chandras <markos.chandras@...tec.com>, Luis Henriques <luis.henriques@...onical.com> Subject: [PATCH 3.16.y-ckt 128/183] MIPS: asm: asmmacro: Replace "add" instructions with "addu" 3.16.7-ckt8 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Markos Chandras <markos.chandras@...tec.com> commit 98a833c1fa4de0695830f77b2d13fd86693da298 upstream. The "add" instruction is actually a macro in binutils and depending on the size of the immediate it can expand to an "addi" instruction. However, the "addi" instruction traps on overflows which is not something we want on address calculation. Link: http://www.linux-mips.org/archives/linux-mips/2015-01/msg00121.html Cc: Paul Burton <paul.burton@...tec.com> Cc: Maciej W. Rozycki <macro@...ux-mips.org> Signed-off-by: Markos Chandras <markos.chandras@...tec.com> [ luis: backported to 3.16: adjusted context ] Signed-off-by: Luis Henriques <luis.henriques@...onical.com> --- arch/mips/include/asm/asmmacro.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/mips/include/asm/asmmacro.h b/arch/mips/include/asm/asmmacro.h index 935543f14538..9dbc454ad14e 100644 --- a/arch/mips/include/asm/asmmacro.h +++ b/arch/mips/include/asm/asmmacro.h @@ -293,7 +293,7 @@ .macro ld_d wd, off, base .set push .set noat - add $1, \base, \off + addu $1, \base, \off .word LDD_MSA_INSN | (\wd << 6) .set pop .endm @@ -301,7 +301,7 @@ .macro st_d wd, off, base .set push .set noat - add $1, \base, \off + addu $1, \base, \off .word STD_MSA_INSN | (\wd << 6) .set pop .endm -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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