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Re: [PATCH v4] x86: detect CMOS aliasing on ports other than 0x70/0x71
- To: Jan Beulich <jbeulich@xxxxxxxx>
- From: Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Date: Tue, 21 Mar 2023 15:12:07 +0100
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- Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Paul Durrant <paul@xxxxxxx>, Wei Liu <wl@xxxxxxx>
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On Mon, Mar 20, 2023 at 09:32:26AM +0100, Jan Beulich wrote:
> ... in order to also intercept Dom0 accesses through the alias ports.
I'm trying to get some documentation about this aliasing, but so far I
haven't been able to find any. Do you have any references of where I
might be able to find it?
> Also stop intercepting accesses to the CMOS ports if we won't ourselves
> use the CMOS RTC.
Could this create any concerns with the ability to disable NMIs if we
no longer filter accesses to the RTC?
Thanks, Roger.
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