Commit c0cdf193 authored by Ingo Molnar's avatar Ingo Molnar Committed by Linus Torvalds

[PATCH] x86: print out early faults via early_printk()

Lost a few hours debugging an early-bootup fault within printk itself,
which manifested itself as a hard to debug early hang.

This patch makes it much easier by printing out early faults via
early_printk(), which function is a lot simpler than a full printk, and
hence more likely to succeed in emergencies.  (We do not recover from early
faults anyway, so there's no loss from not having these messages in the
normal printk buffer.)
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 2903fb16
...@@ -398,7 +398,11 @@ ignore_int: ...@@ -398,7 +398,11 @@ ignore_int:
pushl 32(%esp) pushl 32(%esp)
pushl 40(%esp) pushl 40(%esp)
pushl $int_msg pushl $int_msg
#ifdef CONFIG_EARLY_PRINTK
call early_printk
#else
call printk call printk
#endif
addl $(5*4),%esp addl $(5*4),%esp
popl %ds popl %ds
popl %es popl %es
......
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