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[SPARC]: Don't zero out tail during copy_from_user_inatomic().
author
David S. Miller
<davem@sunset.davemloft.net>
Thu, 28 Sep 2006 02:43:02 +0000
(19:43 -0700)
committer
David S. Miller
<davem@sunset.davemloft.net>
Fri, 29 Sep 2006 23:12:41 +0000
(16:12 -0700)
Actually, since we use the same code for all the copying
types in and out of userspace, we check at runtime whether
preemption is disabled.
Signed-off-by: David S. Miller <davem@davemloft.net>
arch/sparc/lib/copy_user.S
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diff --git
a/arch/sparc/lib/copy_user.S
b/arch/sparc/lib/copy_user.S
index 577505b692ae0643b046223187d071de9106f618..ef095b6c43b157dc7ad076b641893b59e25775de 100644
(file)
--- a/
arch/sparc/lib/copy_user.S
+++ b/
arch/sparc/lib/copy_user.S
@@
-14,6
+14,7
@@
#include <asm/ptrace.h>
#include <asm/asmmacro.h>
#include <asm/page.h>
+#include <asm/thread_info.h>
/* Work around cpp -rob */
#define ALLOC #alloc
@@
-366,6
+367,9
@@
fixupretl:
blu 1f
cmp %o1, %g1
bgeu 1f
+ ld [%g6 + TI_PREEMPT], %g1
+ cmp %g1, 0
+ bne 1f
nop
save %sp, -64, %sp
mov %i0, %o0