Re: [Xen-devel] [PATCH 3/3] x86: tighten MMU_*PT_UPDATE* check and combine error paths

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 12/10/17 13:14, Jan Beulich wrote:
>>>> On 12.10.17 at 13:31, <andrew.cooper3@xxxxxxxxxx> wrote:
>> On 12/10/17 11:01, Jan Beulich wrote:
>>> Don't accept anything other than r/w RAM pages and move the paged-out
>>> check into the (unlikely) error path following that check.
>>>
>>> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
>> How does dom0 boot with this change in place?  You appear to have
>> prohibited mapping MMIO frames.
> The page in question is a page table one, which can't be MMIO.
> Dom0 is booting fine.

Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

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