On 2024/8/19 17:57, Duan, Zhenzhong wrote:
-----Original Message-----
From: Liu, Yi L <yi.l....@intel.com>
Subject: Re: [PATCH v2 13/17] intel_iommu: piotlb invalidation should
notify unmap
On 2024/8/5 14:27, Zhenzhong Duan wrote:
This is used by some emulated devices which caches address
translation result. When piotlb invalidation issued in guest,
those caches should be refreshed.
Perhaps I have asked it in the before. :) To me, such emulated devices
should implement an ATS-capability. You may mention the devices that
does not implement ATS-capability, but caches the translation result,
and note that it is better to implement ATS cap if there is need to
cache the translation request.
OK, will do. Will be like:
"For device that does not implement ATS-capability or disable it
but still caches the translation result, it is better to implement ATS cap
or enable it if there is need to cache the translation request."
sorry for a typo. s/request/result/
--
Regards,
Yi Liu
