[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v2 19/21] xen/arm: Reserve region in guest memory for device passthrough
Hi Stefano, On 08/06/2014 05:27 PM, Stefano Stabellini wrote: > On Thu, 31 Jul 2014, Julien Grall wrote: >> This region will be split by the toolstack to allocate MMIO range for eac >> device. >> >> For now only reserve a 768MB region, this should be enought to passthrough >> multiple device at the same time. >> >> Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx> >> >> --- >> >> I can't allocate easily a range of 1GB in the current layout without shrink >> the first RAM bank. So I decided to use only 768MB. If in the future we need >> more, then we will have to choose at runtime the guest layout. >> >> Changes in v2: >> - Bump the reserved region from 512MB to 768MB > > > Better than nothing. > Would it be possible to add a second region > 4GB? Maybe after RAM? > How hard would be to handle that? It won't work if the guest is using short-descriptor translation table format because only 32 bits address will be supported. Regards, -- Julien Grall _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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