diff options
| author | Artur Grabowski <art@cvs.openbsd.org> | 2002-04-27 15:00:17 +0000 |
|---|---|---|
| committer | Artur Grabowski <art@cvs.openbsd.org> | 2002-04-27 15:00:17 +0000 |
| commit | 26ad297b3fd2e3e1b04ddc6855c081d6cdd97641 (patch) | |
| tree | 1e4de74665ade53631ac0f033eb5427bd43b94a7 | |
| parent | 1d8c583bfbd54da9b80bed64cb21bd377c44dd13 (diff) | |
In proc_trampoline, lower the spl level to 0. This way kernel threads that are
forked out in main() will run at a decent spl level and not at splhigh.
From NetBSD.
deraadt@ ok.
| -rw-r--r-- | sys/arch/sparc/sparc/locore.s | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sys/arch/sparc/sparc/locore.s b/sys/arch/sparc/sparc/locore.s index 247c2de32ea..8f72d13392d 100644 --- a/sys/arch/sparc/sparc/locore.s +++ b/sys/arch/sparc/sparc/locore.s @@ -1,4 +1,4 @@ -/* $OpenBSD: locore.s,v 1.46 2002/03/13 00:24:21 miod Exp $ */ +/* $OpenBSD: locore.s,v 1.47 2002/04/27 15:00:16 art Exp $ */ /* $NetBSD: locore.s,v 1.73 1997/09/13 20:36:48 pk Exp $ */ /* @@ -4800,6 +4800,13 @@ ENTRY(snapshot) * and when returning a child to user mode after a fork(2). */ ENTRY(proc_trampoline) + /* Reset interrupt level */ + rd %psr, %o0 + andn %o0, PSR_PIL, %o0 ! psr &= ~PSR_PIL; + wr %o0, 0, %psr ! (void) spl0(); + nop ! psr delay; the next 2 instructions + ! can safely be made part of the + ! required 3 instructions psr delay call %l0 ! re-use current frame mov %l1, %o0 |