Messages in this thread | | | Subject | Re: [PATCH v5 06/10] KVM: xen: allow shared_info to be mapped by fixed HVA | From | David Woodhouse <> | Date | Sat, 23 Sep 2023 08:07:27 +0100 |
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On Fri, 2023-09-22 at 15:00 +0000, Paul Durrant wrote: > From: Paul Durrant <pdurrant@amazon.com> > > The shared_info page is not guest memory as such. It is a dedicated page > allocated by the VMM and overlaid onto guest memory in a GFN chosen by the > guest. The guest may even request that shared_info be moved from one GFN > to another, but the HVA is never going to change. Thus it makes much more > sense to map the shared_info page in kernel once using this fixed HVA.
The words "makes much more sense" are doing a *lot* of work there. :)
When heckling the cover letter in https://lore.kernel.org/kvm/d13e459e221f28fb1865eedea023e583a2277ab1.camel@infradead.org/ I suggested that the explanation probably wants to make it into a commit message rather than just the cover letter which tends not to be preserved in the commit history. It's *this* commit which needs it, I think. [unhandled content-type:application/pkcs7-signature] | |