Messages in this thread | | | Subject | Re: [PATCH 2/5] iommu/vt-d: Remove WO permissions on second-level paging entries | From | Lu Baolu <> | Date | Fri, 19 Mar 2021 08:24:16 +0800 |
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Hi Joerg,
On 3/18/21 5:12 PM, Joerg Roedel wrote: > Hi, > > On Mon, Mar 08, 2021 at 11:47:46AM -0800, Raj, Ashok wrote: >> That is the primary motivation, given that we have moved to 1st level for >> general IOVA, first level doesn't have a WO mapping. I didn't know enough >> about the history to determine if a WO without a READ is very useful. I >> guess the ZLR was invented to support those cases without a READ in PCIe. I > > Okay, please update the commit message and re-send. I guess these > patches are 5.13 stuff. In that case, Baolu can include them into his > pull request later this cycle.
Okay! It works for me.
Best regards, baolu
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