Re: [Xen-devel] [edk2-devel] [PATCH v4 22/35] OvmfPkg/XenPlatformPei: no hvmloader: get the E820 table via hypercall

[Anthony PERARD <anthony.perard@xxxxxxxxxx>]

On Wed, Aug 07, 2019 at 05:14:33PM +0200, Roger Pau Monné wrote:
> On Mon, Jul 29, 2019 at 04:39:31PM +0100, Anthony PERARD wrote:
> > When the Xen PVH entry point has been used, hvmloader hasn't run and
> > hasn't prepared an E820 table. The only way left to get an E820 table
> > is to ask Xen via an hypercall, the call can only be made once so keep
> > the result cached for later.
> 
> I think we agreed that the above is not true, and that the memory
> map can be fetched as many times as desired using the hypercall
> interface.

Yes, I'll change the commit message. How about:

  When the Xen PVH entry point has been used, hvmloader hasn't run and
  hasn't prepared an E820 table. The only way left to get an E820 table
  is to ask Xen via an hypercall.  We keep the result cached to avoid
  making a second hypercall which would give the same result.

Thanks,

-- 
Anthony PERARD

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