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| author | Grant Grundler <grundler@parisc-linux.org> | 2005-10-21 22:47:40 -0400 |
|---|---|---|
| committer | Kyle McMartin <kyle@parisc-linux.org> | 2005-10-21 22:47:40 -0400 |
| commit | 91313d60d8ad96fa79a833e55e8c13b56f893614 (patch) | |
| tree | 4808780dd7837cbbb2e242686d026caa26178e1c /arch/parisc | |
| parent | 3aa0862ce7c120e035bc2aa25997fd000d964d6e (diff) | |
| download | linux-3.10-91313d60d8ad96fa79a833e55e8c13b56f893614.tar.gz linux-3.10-91313d60d8ad96fa79a833e55e8c13b56f893614.tar.bz2 linux-3.10-91313d60d8ad96fa79a833e55e8c13b56f893614.zip | |
[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>
Diffstat (limited to 'arch/parisc')
| -rw-r--r-- | arch/parisc/kernel/signal.c | 1 |
1 files changed, 1 insertions, 0 deletions
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])); |