Re: [Xen-devel] [TESTDAY] Test report

[Tamas K Lengyel <tamas.k.lengyel@xxxxxxxxx>]

On Thu, Nov 14, 2019 at 11:39 AM Andrew Cooper
<andrew.cooper3@xxxxxxxxxx> wrote:
>
> On 14/11/2019 18:34, Tamas K Lengyel wrote:
> > * Comments: All works, altp2m+introspection requires the ept=pml=0
> > boot flag specified to workaround a deadlock in Xen
>
> Is this separate from the general problem with EPT A/D and
> write-protecting pagetables?
>

It sounds like it is, it happens without write-protecting in-guest
pagetables. I didn't have time to investigate where the deadlock
happens and since the workaround is fine for the usecase it wasn't a
priority to figure out.

Tamas

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