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alpha: separate thread-synchronous flags

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... and fix the race in updating unaligned control ones

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Al Viro
2012-10-20 15:52:23 +01:00
committed by Linus Torvalds
parent 3d0ceac129
commit 3185bd2618
4 changed files with 68 additions and 45 deletions
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6
arch/alpha/kernel/traps.c
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@@ -780,17 +780,17 @@ do_entUnaUser(void __user * va, unsigned long opcode,
/* Check the UAC bits to decide what the user wants us to do
with the unaliged access. */
if (!test_thread_flag (TIF_UAC_NOPRINT)) {
if (!(current_thread_info()->status & TS_UAC_NOPRINT)) {
if (__ratelimit(&ratelimit)) {
printk("%s(%d): unaligned trap at %016lx: %p %lx %ld\n",
current->comm, task_pid_nr(current),
regs->pc - 4, va, opcode, reg);
}
}
if (test_thread_flag (TIF_UAC_SIGBUS))
if ((current_thread_info()->status & TS_UAC_SIGBUS))
goto give_sigbus;
/* Not sure why you'd want to use this, but... */
if (test_thread_flag (TIF_UAC_NOFIX))
if ((current_thread_info()->status & TS_UAC_NOFIX))
return;
/* Don't bother reading ds in the access check since we already