From: Markos Chandras <markos.chandras@imgtec.com>
Date: Tue, 21 Oct 2014 09:21:54 +0000 (+0100)
Subject: MIPS: cp1emu: Fix ISA restrictions for cop1x_op instructions
X-Git-Tag: fixes-against-v3.18-rc2~6^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a5466d7bba9af83a82cc7c081b2a7d557cde3204;p=pandora-kernel.git

MIPS: cp1emu: Fix ISA restrictions for cop1x_op instructions

Commit 08a07904e1828 ("MIPS: math-emu: Remove most ifdefery") removed
the #ifdef ISA conditions and switched to runtime detection. However,
according to the instruction set manual, the cop1x_op instructions are
available in >=MIPS32r2 as well. This fixes a problem on MIPS32r2
with the ntpd package which failed to execute with a SIGILL exit code due
to the fact that a madd.d instruction was not being emulated.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Fixes: 08a07904e1828 ("MIPS: math-emu: Remove most ifdefery")
Cc: <stable@vger.kernel.org> # v3.16+
Cc: linux-mips@linux-mips.org
Reviewed-by: Paul Burton <paul.burton@imgtec.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/8173/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

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