From: Roland McGrath <roland@redhat.com>
To: Andrew Morton <akpm@osdl.org>, Linus Torvalds <torvalds@osdl.org>
Cc: John Reiser <jreiser@BitWagon.com>, linux-kernel@vger.kernel.org
Subject: [PATCH] i386: clean up vDSO alignment padding
Date: Thu, 28 Jul 2005 01:25:46 -0700 (PDT) [thread overview]
Message-ID: <20050728082546.7864A180EB8@magilla.sf.frob.com> (raw)
This makes the vDSO use nops for all its padding around instructions,
rather than sometimes zeros, and nop-pads the end of the area containing
instructions to a 32-byte cache line, to keep text and data in separate lines.
Signed-off-by: Roland McGrath <roland@redhat.com>
--- a/arch/i386/kernel/vsyscall-sigreturn.S
+++ b/arch/i386/kernel/vsyscall-sigreturn.S
@@ -15,7 +15,7 @@
*/
.text
- .org __kernel_vsyscall+32
+ .org __kernel_vsyscall+32,0x90
.globl __kernel_sigreturn
.type __kernel_sigreturn,@function
__kernel_sigreturn:
@@ -35,6 +35,7 @@ __kernel_rt_sigreturn:
int $0x80
.LEND_rt_sigreturn:
.size __kernel_rt_sigreturn,.-.LSTART_rt_sigreturn
+ .balign 32
.previous
.section .eh_frame,"a",@progbits
reply other threads:[~2005-07-28 8:26 UTC|newest]
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