From 91313d60d8ad96fa79a833e55e8c13b56f893614 Mon Sep 17 00:00:00 2001 From: Grant Grundler Date: Fri, 21 Oct 2005 22:47:40 -0400 Subject: [PARISC] Add sync required after fdc to enforce insn ordering PA20 arch book (page 7-52 and 7-55) indicate a "sync" is required after the FDC "to enforce instruction ordering". And we want to make sure FIC is executed after FDC has retired. Signed-off-by: Grant Grundler Signed-off-by: Kyle McMartin --- arch/parisc/kernel/signal.c | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/parisc/kernel') diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c index 0224651fd8f..6c905c128c2 100644 --- a/arch/parisc/kernel/signal.c +++ b/arch/parisc/kernel/signal.c @@ -636,6 +636,7 @@ do_signal(sigset_t *oldset, struct pt_regs *regs, int in_syscall) /* Stack is 64-byte aligned, and we only * need to flush 1 cache line */ asm("fdc 0(%%sr3, %0)\n" + "sync\n" "fic 0(%%sr3, %0)\n" "sync\n" : : "r"(regs->gr[30])); -- cgit v1.2.3