Weidong, Keir,
I agree your suggestions.
Noboru.

Keir Fraser wrote:

On 25/01/2010 10:45, "Sander Eikelenboom" <linux@xxxxxxxxxxxxxx> wrote:

a) Could be discussed if panic should be default instead of disabling
iommu or
not, although there seem to be a lot of broken bioses, so that would
lead to a
lot of machines not booting.

Absolutely not acceptable. Warn and completely disable IOMMU is the
correct
default causing least pain to the most end users.
-- Keir

Agree. It should not crash Xen by default due to BIOS issues.
warn-and-disable is better. It won't impact common Xen users, and if a
user really wants to use VT-d, he can try iommu=workaround_bogus_bios,
or directly report to OEM vendor to get it fixed in BIOS. As VT-d is
used more and more widely, I think the BIOS issues will be found and
fixed more quickly than before, thus the situation should be better.
Regards,
Weidong

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel