On 2020/7/1 下午8:41, Peter Xu wrote:
On Wed, Jul 01, 2020 at 08:30:07PM +0800, Jason Wang wrote:
I overlooked myself that the IR region will be there even if ir=off.
Yes, but the point stands still but the issue is still if ir=off.
So I
think the assert should stand.
Do you mean vhost can't trigger the assert()? If yes, I don't get how it
can't.
Yes. vhost can only trigger the translate() via memory API. No matter whether
ir is on/off, the memory region is always enabled, so any access to 0xfeexxxxx
from memory API should still land at s->mr_ir, afaict, rather than the dmar
region.
Right.
Thanks
