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From: Franck Bui-Huu <vagabon.xyz@gmail.com>
To: ralf@linux-mips.org
Cc: linux-mips@linux-mips.org, Franck Bui-Huu <fbuihuu@gmail.com>
Subject: [PATCH 8/10] signal32: no need to save c0_status register in setup_sigcontext32()
Date: Mon,  5 Feb 2007 15:24:26 +0100	[thread overview]
Message-ID: <11706854691838-git-send-email-fbuihuu@gmail.com> (raw)
In-Reply-To: <11706854683935-git-send-email-fbuihuu@gmail.com>

From: Franck Bui-Huu <fbuihuu@gmail.com>

All the information in the MIPS c0_status register is priviledged.
Nothing that would constitute part of the thread context.

The one flag one could possibly argument about might be c0_status.fr
but none of the ABIs or tools or application software can make use
of it.

So for consistency with restore_sigcontext32(), which does not
restore c0_status register, this patch remove the saving part.

Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
---
 arch/mips/kernel/signal32.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c
index 5d102ef..0994d6e 100644
--- a/arch/mips/kernel/signal32.c
+++ b/arch/mips/kernel/signal32.c
@@ -170,7 +170,6 @@ static int setup_sigcontext32(struct pt_regs *regs,
 	int i;
 
 	err |= __put_user(regs->cp0_epc, &sc->sc_pc);
-	err |= __put_user(regs->cp0_status, &sc->sc_status);
 
 	err |= __put_user(0, &sc->sc_regs[0]);
 	for (i = 1; i < 32; i++)
-- 
1.4.4.3.ge6d4

  parent reply	other threads:[~2007-02-05 14:28 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-05 14:24 [PATCH 0/10] Clean up signal code [take #3] Franck Bui-Huu
2007-02-05 14:24 ` [PATCH 1/10] signals: reduce {setup,restore}_sigcontext sizes Franck Bui-Huu
2007-02-05 14:24 ` [PATCH 2/10] signal: do not inline functions in signal-common.h Franck Bui-Huu
2007-02-05 14:24 ` [PATCH 3/10] signal: clean up sigframe structure Franck Bui-Huu
2007-02-05 14:24 ` [PATCH 4/10] signal32: remove code duplication Franck Bui-Huu
2007-02-05 14:24 ` [PATCH 5/10] signal: test return value of install_sigtramp() Franck Bui-Huu
2007-02-05 14:24 ` [PATCH 6/10] signal: factorize debug code Franck Bui-Huu
2007-02-05 14:24 ` [PATCH 7/10] signal32: reduce {setup,restore}_sigcontext32 sizes Franck Bui-Huu
2007-02-05 14:24 ` Franck Bui-Huu [this message]
2007-02-05 14:24 ` [PATCH 9/10] signal: do not use save_static_function() anymore Franck Bui-Huu
2007-02-07 15:40   ` Atsushi Nemoto
2007-02-08  8:53     ` Franck Bui-Huu
2007-02-08 13:36       ` Atsushi Nemoto
2007-02-08 15:39         ` Franck Bui-Huu
2007-02-08 16:35           ` Atsushi Nemoto
2007-02-08 20:05             ` Franck Bui-Huu
2007-02-05 14:24 ` [PATCH 10/10] signal: do not inline handle_signal() Franck Bui-Huu
2007-02-07 16:04 ` [PATCH 0/10] Clean up signal code [take #3] Atsushi Nemoto
2007-02-08  8:55   ` Franck Bui-Huu
2007-02-08  9:16     ` Franck Bui-Huu
2007-02-08 13:15       ` Atsushi Nemoto

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