RE: [PATCH] VT-d: fix caching mode IOTLB flushing

2021-08-26 Thread Tian, Kevin
> From: Jan Beulich > Sent: Thursday, August 19, 2021 4:06 PM > > While for context cache entry flushing use of did 0 is indeed correct > (after all upon reading the context entry the IOMMU wouldn't know any > domain ID if the entry is not present, and hence a surrogate one needs > to be used),

Re: [PATCH] VT-d: fix caching mode IOTLB flushing

2021-08-19 Thread Paul Durrant
On 19/08/2021 09:05, Jan Beulich wrote: While for context cache entry flushing use of did 0 is indeed correct (after all upon reading the context entry the IOMMU wouldn't know any domain ID if the entry is not present, and hence a surrogate one needs to be used), for IOTLB entries the normal