* [PATCH] i386: clean up vDSO alignment padding
@ 2005-07-28 8:25 Roland McGrath
0 siblings, 0 replies; only message in thread
From: Roland McGrath @ 2005-07-28 8:25 UTC (permalink / raw)
To: Andrew Morton, Linus Torvalds; +Cc: John Reiser, linux-kernel
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
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2005-07-28 8:25 [PATCH] i386: clean up vDSO alignment padding Roland McGrath
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