linux-kernel - Re: [PATCH] fix signal return code when enable CONFIG_OABI

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Date:	Fri, 7 Mar 2008 19:09:22 +0800
From:	"ye janboe" <janboe.ye@...il.com>
To:	"Russell King - ARM Linux" <linux@....linux.org.uk>
Cc:	linux-arm-kernel@...ts.arm.linux.org.uk,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fix signal return code when enable CONFIG_OABI_COMPAT

Russell

I resubmit my patch, please review it.
Thanks

commit 31644e57359644d3f376f293f1a45b7c181175b6
Author: janboe <janboe@...il.com>
Date:   Thu Mar 6 23:00:23 2008 +0800

    fix signal return code when enable CONFIG_OABI_COMPAT
    Signed-off-by: Janboe Ye <janboe.ye@...il.com>

diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index 54cdf1a..ef2f86a 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -26,8 +26,8 @@
 /*
  * For ARM syscalls, we encode the syscall number into the instruction.
  */
-#define SWI_SYS_SIGRETURN      (0xef000000|(__NR_sigreturn))
-#define SWI_SYS_RT_SIGRETURN   (0xef000000|(__NR_rt_sigreturn))
+#define SWI_SYS_SIGRETURN
(0xef000000|(__NR_sigreturn)|(__NR_OABI_SYSCALL_BASE))
+#define SWI_SYS_RT_SIGRETURN
(0xef000000|(__NR_rt_sigreturn)|(__NR_OABI_SYSCALL_BASE))

 /*
  * With EABI, the syscall number has to be loaded into r7.


2008/3/6, Russell King - ARM Linux <linux@....linux.org.uk>:
> On Thu, Mar 06, 2008 at 11:14:50PM +0800, ye janboe wrote:
>  > commit b4e8bde513a9a477c30c8769073ced7b59676d48
>  > Author: janboe <janboe.ye@...il.com>
>  > Date:   Thu Mar 6 23:00:23 2008 +0800
>  >
>  >     fix signal return code when enable CONFIG_OABI_COMPAT.
>  >     because this will make kernel report this syscall obsolete.
>  >     Signed-off-by: Janboe Ye <janboe.ye@...il.com>
>
>
> This is all horribly broken for OABI compat anyway (because __NR_* don't
>  contain the right prefix).  So this patch doesn't actually fix the real
>  problem.
>
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