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From: Paul Burton <paul.burton@imgtec.com>
To: <linux-mips@linux-mips.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>,
	<linux-fsdevel@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	Paul Burton <paul.burton@imgtec.com>
Subject: [PATCH 06/10] MIPS: ensure Config5.UFE is clear on boot
Date: Thu, 11 Sep 2014 08:30:19 +0100	[thread overview]
Message-ID: <1410420623-11691-7-git-send-email-paul.burton@imgtec.com> (raw)
In-Reply-To: <1410420623-11691-1-git-send-email-paul.burton@imgtec.com>

As is done for UFR, ensure that userland cannot directly manipulate the
mode by clearing the UFE bit during boot.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
---
 arch/mips/kernel/cpu-probe.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index db929a0..4e2a6e0 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -400,7 +400,7 @@ static inline unsigned int decode_config5(struct cpuinfo_mips *c)
 	unsigned int config5;
 
 	config5 = read_c0_config5();
-	config5 &= ~MIPS_CONF5_UFR;
+	config5 &= ~(MIPS_CONF5_UFR | MIPS_CONF5_UFE);
 	write_c0_config5(config5);
 
 	if (config5 & MIPS_CONF5_EVA)
-- 
2.0.4


WARNING: multiple messages have this Message-ID (diff)
From: Paul Burton <paul.burton@imgtec.com>
To: linux-mips@linux-mips.org
Cc: Alexander Viro <viro@zeniv.linux.org.uk>,
	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	Paul Burton <paul.burton@imgtec.com>
Subject: [PATCH 06/10] MIPS: ensure Config5.UFE is clear on boot
Date: Thu, 11 Sep 2014 08:30:19 +0100	[thread overview]
Message-ID: <1410420623-11691-7-git-send-email-paul.burton@imgtec.com> (raw)
Message-ID: <20140911073019.n-wyX33tNmGE2ZbyaQR5ZUnd47sxLqOtjpcrBx1iFxI@z> (raw)
In-Reply-To: <1410420623-11691-1-git-send-email-paul.burton@imgtec.com>

As is done for UFR, ensure that userland cannot directly manipulate the
mode by clearing the UFE bit during boot.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
---
 arch/mips/kernel/cpu-probe.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index db929a0..4e2a6e0 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -400,7 +400,7 @@ static inline unsigned int decode_config5(struct cpuinfo_mips *c)
 	unsigned int config5;
 
 	config5 = read_c0_config5();
-	config5 &= ~MIPS_CONF5_UFR;
+	config5 &= ~(MIPS_CONF5_UFR | MIPS_CONF5_UFE);
 	write_c0_config5(config5);
 
 	if (config5 & MIPS_CONF5_EVA)
-- 
2.0.4

  parent reply	other threads:[~2014-09-11  8:37 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-11  7:30 [PATCH 00/10] MIPS O32 new FP ABI support Paul Burton
2014-09-11  7:30 ` Paul Burton
2014-09-11  7:30 ` [PATCH 01/10] binfmt_elf: hoist ELF program header loading to a function Paul Burton
2014-09-11  7:30   ` Paul Burton
2014-09-11  7:30 ` [PATCH 02/10] binfmt_elf: load interpreter program headers earlier Paul Burton
2014-09-11  7:30   ` Paul Burton
2014-11-13 12:20   ` Thierry Reding
2014-11-13 17:29     ` Ralf Baechle
2014-09-11  7:30 ` [PATCH 03/10] binfmt_elf: allow arch code to examine PT_LOPROC ... PT_HIPROC headers Paul Burton
2014-09-11  7:30   ` Paul Burton
2014-11-12 13:41   ` Thierry Reding
2014-11-13  0:16     ` Ralf Baechle
2014-11-13 12:25       ` Thierry Reding
2014-09-11  7:30 ` [PATCH 04/10] MIPS: define bits introduced for hybrid FPRs Paul Burton
2014-09-11  7:30   ` Paul Burton
2014-09-11  7:30 ` [PATCH 05/10] MIPS: detect presence of the FRE & UFR bits Paul Burton
2014-09-11  7:30   ` Paul Burton
2014-09-11  7:30 ` Paul Burton [this message]
2014-09-11  7:30   ` [PATCH 06/10] MIPS: ensure Config5.UFE is clear on boot Paul Burton
2014-09-11  7:30 ` [PATCH 07/10] MIPS: support for hybrid FPRs Paul Burton
2014-09-11  7:30   ` Paul Burton
2014-12-23 23:21   ` Aaro Koskinen
2014-12-23 23:31     ` James Hogan
2014-12-23 23:31       ` James Hogan
2014-12-23 23:51       ` Aaro Koskinen
2014-09-11  7:30 ` [PATCH 08/10] MIPS: ELF: add definition for the .MIPS.abiflags section Paul Burton
2014-09-11  7:30   ` Paul Burton
2014-09-11  7:30 ` [PATCH 09/10] MIPS: ELF: set FP mode according to .MIPS.abiflags Paul Burton
2014-09-11  7:30   ` Paul Burton
2014-09-11  7:30 ` [PATCH 10/10] MIPS: Kconfig option to better exercise/debug hybrid FPRs Paul Burton
2014-09-11  7:30   ` Paul Burton

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