Commit 91313d60 authored Oct 21, 2005 by Grant Grundler Committed by Kyle McMartin Oct 21, 2005

[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 <grundler@parisc-linux.org>

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

parent 3aa0862c

arch/parisc/kernel/signal.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -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]));