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Re: [PATCH for-4.15] x86/boot: Drop 'noapic' suggestion from check_timer()
- To: Ian Jackson <iwj@xxxxxxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Thu, 28 Jan 2021 15:27:37 +0000
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- Cc: Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Thu, 28 Jan 2021 15:27:57 +0000
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On 28/01/2021 14:57, Ian Jackson wrote:
> Jan Beulich writes ("Re: [PATCH for-4.15] x86/boot: Drop 'noapic' suggestion
> from check_timer()"):
>> On 27.01.2021 20:49, Andrew Cooper wrote:
>>> In practice, there is no such thing as a real 64bit system without
>>> APICs. (PVH style virtual environments, sure, but they don't end up here).
>>>
>>> The suggestion to try and use noapic only makes a bad situation worse.
>>>
>>> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
>> Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
> Release-Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Thanks.
> Not sure if this is a bugfix but it is a change to a message so fine.
It was one of many delaying factors with the "Xen doesn't boot on modern
Intel client CPUs".
~Andrew
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