Re: [PATCH 1/4] x86/xen: Remove redundant config dependency on X86_LOCAL_APIC

Andrew Cooper <[email protected]>
Newsgroups org.xenproject.lists.xen-devel,org.kernel.vger.linux-kernel
Message-ID <[email protected]> 
On 05/08/2026 9:40 am, Jan Beulich wrote:
> On 05.08.2026 10:37, Jan Beulich wrote:
>> On 05.08.2026 10:21, Juergen Gross wrote:
>>> CONFIG_XEN depends on CONFIG_X86_LOCAL_APIC already, so the dependency
>>> of CONFIG_XEN_PVHVM on CONFIG_X86_LOCAL_APIC can be dropped.
>>>
>>> Signed-off-by: Juergen Gross <[email protected]>
>> Reviewed-by: Jan Beulich <[email protected]>
> Hmm, looking at patch 2 I wonder: Isn't it XEN's dependency which wants
> dropping? XEN_PV shouldn't require X86_LOCAL_APIC, should it?

In Linux terms, XEN_PV does need X86_LOCAL_APIC.

While the PV guest doesn't have an APIC directly, other areas (parsing
the ACPI tables, configuring device interrupts) require Linux to think
it's on a normal APIC-like system.

~Andrew
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