On Tue, 5 Nov 2002, Russell King wrote:
> static _INLINE_ unsigned int serial_in(struct uart_8250_port *up, int offset)
> {
> offset <<= up->port.regshift;
>
> switch (up->port.iotype) {
>
> which also dereferences "up". So something may have corrupted %ebx
> between executing that switch statement and executing the inb().
>
> Could the NMI handler be corrupting %ebx ?
Yes that is highly likely, my current NMI handler does a fair amount of
work, however it chains from the current default nmi handler, i thought
register saving was already taken care of otherwise wouldn't i have all
sorts of other strange bugs creeping up?
Zwane
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This archive was generated by hypermail 2b29 : Thu Nov 07 2002 - 22:00:38 EST