Re: [Xen-devel] [PATCH-for-4.11] tools: add quirk for loading PVH RSDP into low memory

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Thu, Apr 05, 2018 at 02:09:11PM +0200, Juergen Gross wrote:
> Commit 4a5733771e6f33918eba07b584cccce564a67ac1 ("libxl: put RSDP for
> PVH guest near 4GB") broke PVH guests with Linux kernels before 4.17
> as those kernels are not taking the RSDP address from the PVH
> start_info structure, but are searching it as on legacy system by
> scanning low memory.
> 
> Add a quirk to the domain config to enable loading the RSDP at low
> addresses again.
> 
> Specifying "pvh_quirk_rsdp=1" will accomplish that.
> 
> Signed-off-by: Juergen Gross <jgross@xxxxxxxx>

I'm ignoring this patch for now because the discussion seems to be still
on-going.

I think this issue should be a blocker. We don't need to rush to a
solution.

Wei.

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