Messages in this thread | | | Date | Fri, 6 Nov 2020 19:24:24 +0100 | From | Christoph Hellwig <> | Subject | Re: [PATCH v3] swiotlb: Adjust SWIOTBL bounce buffer size for SEV guests. |
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On Thu, Nov 05, 2020 at 02:06:49PM -0500, Konrad Rzeszutek Wilk wrote: > . > > > Right, so I am wondering if we can do this better. > > > > > > That is you are never going to get any 32-bit devices with SEV right? That > > > is there is nothing that bounds you to always use the memory below 4GB? > > > > > > > We do support 32-bit PCIe passthrough devices with SEV. > > Ewww.. Which devices would this be?
There is still some new broken shit like that that keeps appearing. GPU is pretty famouts for supporting less than 64-bit addressing, even if it isn't all the way down to 32-bit.
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