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SubjectPARISC fix signal trampoline cache flushing
-stable review patch.  If anyone has any objections, please let us know.
---------------------
From: Kyle McMartin <kyle@mcmartin.ca>

upstream commit: cf39cc3b56bc4a562db6242d3069f65034ec7549

The signal trampolines were accidently flushing the kernel I$ instead of
the users. Fix that up, and also add a missing user D$ flush while
we're at it.

Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
---
arch/parisc/kernel/signal.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/arch/parisc/kernel/signal.c
+++ b/arch/parisc/kernel/signal.c
@@ -534,7 +534,8 @@ insert_restart_trampoline(struct pt_regs
* Flushing one cacheline is cheap.
* "sync" on bigger (> 4 way) boxes is not.
*/
- flush_icache_range(regs->gr[30], regs->gr[30] + 4);
+ flush_user_dcache_range(regs->gr[30], regs->gr[30] + 4);
+ flush_user_icache_range(regs->gr[30], regs->gr[30] + 4);

regs->gr[31] = regs->gr[30] + 8;
/* Preserve original r28. */
--


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