From: Paul Burton <paul.burton@imgtec.com>
Date: Mon, 27 Jul 2015 19:58:25 +0000 (-0700)
Subject: MIPS: Advertise MSA support via HWCAP when present
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=3cc9fa7fb3e38e83e59977c8bc5c355687232362;p=linux-beck.git

MIPS: Advertise MSA support via HWCAP when present

If MSA is supported by both the hardware & the kernel then advertise
that support to userland via the AT_HWCAP aux vector.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Matthew Fortune <matthew.fortune@imgtec.com>
Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-kernel@vger.kernel.org
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/10799/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 380a14b8772e..571a8e6ea5bd 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -1531,6 +1531,7 @@ void cpu_probe(void)
 		c->msa_id = cpu_get_msa_id();
 		WARN(c->msa_id & MSA_IR_WRPF,
 		     "Vector register partitioning unimplemented!");
+		elf_hwcap |= HWCAP_MIPS_MSA;
 	}
 
 	cpu_probe_vmbits(c);