tree 7546a5141398e8ecaa493a58a4ca8af11deaf04d
parent 7fe4c1b16854f0440939c62b8102cbf5c75e7cdc
author Keith Owens <[EMAIL PROTECTED]> Fri, 01 Jul 2005 12:53:00 -0700
committer Tony Luck <[EMAIL PROTECTED]> Thu, 07 Jul 2005 05:31:15 -0700
[IA64] restore_sigcontext is not preempt safe
restore_sigcontext calls ia64_set_local_fpu_owner() which requires that
preempt be disabled.
Signed-off-by: Keith Owens <[EMAIL PROTECTED]>
Signed-off-by: Tony Luck <[EMAIL PROTECTED]>
arch/ia64/kernel/signal.c | 2 ++
1 files changed, 2 insertions(+)
diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c
--- a/arch/ia64/kernel/signal.c
+++ b/arch/ia64/kernel/signal.c
@@ -143,6 +143,7 @@ restore_sigcontext (struct sigcontext __
__copy_from_user(current->thread.fph, &sc->sc_fr[32], 96*16);
psr->mfh = 0; /* drop signal handler's fph contents... */
+ preempt_disable();
if (psr->dfh)
ia64_drop_fpu(current);
else {
@@ -150,6 +151,7 @@ restore_sigcontext (struct sigcontext __
__ia64_load_fpu(current->thread.fph);
ia64_set_local_fpu_owner(current);
}
+ preempt_enable();
}
return err;
}
-
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