PARISC fix signal trampoline cache flushing

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>

diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c
index 2ce3806f02e1989d5157ac9c9a3a037f40a384fc..e060d26e6a59a740f5e1f411fc230333704f9244 100644 (file)
--- a/arch/parisc/kernel/signal.c
+++ b/arch/parisc/kernel/signal.c
@@ -534,7 +534,8 @@ insert_restart_trampoline(struct pt_regs *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. */