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Re: [PATCH] x86/vlapic: Don't change ICR on x2APIC SELF_IPI write
- To: xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: Christian Ludloff <ludloff@xxxxxxxxx>
- Date: Tue, 20 Oct 2026 01:40:34 +0200
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- Delivery-date: Mon, 19 Oct 2026 23:40:57 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
> It looks like it's a behavioural difference between Core and Atom.
> Core modify ICR, while Atom do not.
For Core there might be more nuance yet.
I seem to have an ICL result for "does not".
And I seem to have two SKL machs (same
stepping, same ucode) that... disagree with
each other. Some sort of config thing...?
Maybe Intel can explain.
I consider "does not" the cleaner behavior,
unless a compelling explanation is offered.
--
C.
|
