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Message-ID: <20150519211359.35859.24907.stgit@ubuntu-yegoshin>
Date: Tue, 19 May 2015 14:13:59 -0700
From: Leonid Yegoshin <Leonid.Yegoshin@...tec.com>
To: <linux-mips@...ux-mips.org>, <rusty@...tcorp.com.au>,
<alexinbeijing@...il.com>, <paul.burton@...tec.com>,
<david.daney@...ium.com>, <alex@...x-smith.me.uk>,
<linux-kernel@...r.kernel.org>, <ralf@...ux-mips.org>,
<james.hogan@...tec.com>, <markos.chandras@...tec.com>,
<macro@...ux-mips.org>, <eunb.song@...sung.com>,
<manuel.lauss@...il.com>, <andreas.herrmann@...iumnetworks.com>
Subject: [PATCH 2/2] MIPS: MSA: bugfix of keeping MSA live context through
clone or fork
It seems the patch 39148e94e3e1f0477ce8ed3fda00123722681f3a
"MIPS: fork: Fix MSA/FPU/DSP context duplication race"
assumes that DSP/FPU and MSA context should be inherited in child at clone/fork
(look into patch description). It was done on Matthew Fortune request from
toolchain team, I guess.
Well, in this case it should prevent clearing TIF_MSA_CTX_LIVE in copy_thread().
Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@...tec.com>
---
arch/mips/kernel/process.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index f2975d4d1e44..a16e62d40210 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -163,7 +163,6 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
clear_tsk_thread_flag(p, TIF_USEDFPU);
clear_tsk_thread_flag(p, TIF_USEDMSA);
- clear_tsk_thread_flag(p, TIF_MSA_CTX_LIVE);
#ifdef CONFIG_MIPS_MT_FPAFF
clear_tsk_thread_flag(p, TIF_FPUBOUND);
--
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