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Re: [PATCH v2] x86/pv: Inject #UD for missing SYSCALL callbacks
- To: Roger Pau Monné <roger.pau@xxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Wed, 14 Oct 2020 16:17:05 +0100
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- Cc: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxx>, Wei Liu <wl@xxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, Manuel Bouyer <bouyer@xxxxxxxxxxxxxxx>
- Delivery-date: Wed, 14 Oct 2020 15:17:42 +0000
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On 14/10/2020 15:16, Roger Pau Monné wrote:
>> This change does constitute a change in the PV ABI, for corner cases of a PV
>> guest kernel registering neither callback, or not registering the 32bit
>> callback when running on AMD/Hygon hardware.
> Is there any place suitable to document this behavior?
In the short term, my XTF test which will eventually get into CI.
Longer term, my theoretical future where I've described some of this
stuff in docs/guest-guide/
~Andrew
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