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SubjectRe: [Patch v4 3/9] iommu/amd: Detect pre enabled translation
On 05/30/16 at 11:24am, Baoquan He wrote:
> On 05/28/16 at 08:49pm, Wan Zongshun wrote:
> In fact I am still debugging and trying to figure out what need be done
> further to stop the IO_PAGE_FAULT happened on ethernet network card. I
> kept changing code and adjust the patches. Up to now seems I still
> didn't figure out why. There must be something I didn't notice and
> everything will be fine as soon as I close that valve. With my
> understand pci bug scanning will detect each pci device and do the
|_ bus
> initialization job like setting configuration space registers and
> control registers. After that we can safely re-init the pci device and
> re-install the new io-page tables, and this is how Joerg has done for
> vt-d fix for kdump if my understanding is correct. And I tried to do
> like that in this patchset, don't know why it doesn't work.

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