Re: [RFC] I/O MCA recovery

Jesse Barnes
2004-05-04T18:07:41Z

On Tuesday, May 4, 2004 10:43 am, David Mosberger wrote:
> Eh, I/O space is required to soft-fail, isn't it?

I thought so too, but I haven't been able to find the spec that contains that
requirement.

> Why can't you hide this in the platform-specific inX/outX routines? I
> suppose it would be very slow to drain MCAs after every inX/outX, but
> you'd have to do the slow part only once, until you know whether or
> not the given I/O address is safe.

This is I/O initiated by userspace loads/stores, so unless I wrap every in/out
with some sort of ioctl or something, those won't help me. Also, with this
scheme, we could potentially recover from regular read/writes too.

Jesse