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Re: [XEN PATCH 2/9] x86: don't access x86_cpu_to_apicid[] directly, use cpu_physical_id(cpu)
- To: Krystian Hebel <krystian.hebel@xxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 12 Mar 2024 16:42:51 +0100
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 12 Mar 2024 15:42:56 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 12.03.2024 16:18, Krystian Hebel wrote:
> On 7.02.2024 17:28, Jan Beulich wrote:
>> On 14.11.2023 18:49, Krystian Hebel wrote:
>>> --- a/xen/arch/x86/apic.c
>>> +++ b/xen/arch/x86/apic.c
>>> @@ -950,7 +950,7 @@ __next:
>>> */
>>> if (boot_cpu_physical_apicid == -1U)
>>> boot_cpu_physical_apicid = get_apic_id();
>>> - x86_cpu_to_apicid[0] = get_apic_id();
>>> + cpu_physical_id(0) = get_apic_id();
>> While personally I don't mind as much, I expect Andrew would not like
>> this: Something that looks like a function call on the lhs is against
>> what normal language structure would be.
> This made me cringe as well, but I've seen something like this used in
> other places (per_cpu() mostly) so I thought it was OK. I can change it.
Please try to get in touch with Andrew, to see what he thinks (especially
with your pointing of per_cpu()'s similarity).
Jan
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