From: Andrew Cooper <andrew.cooper3@citrix.com>
To: Jan Beulich <jbeulich@suse.com>, Juergen Gross <jgross@suse.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Thomas Gleixner <tglx@kernel.org>, Ingo Molnar <mingo@redhat.com>,
Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
"H. Peter Anvin" <hpa@zytor.com>,
xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org,
x86@kernel.org
Subject: Re: [PATCH 1/4] x86/xen: Remove redundant config dependency on X86_LOCAL_APIC
Date: Wed, 5 Aug 2026 09:43:15 +0100 [thread overview]
Message-ID: <cf26aa7d-2d67-4328-b441-a1c9b7bcd925@citrix.com> (raw)
In-Reply-To: <5e7d500e-7403-4a64-8e4d-50f1031716ba@suse.com>
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 <jgross@suse.com>
>> Reviewed-by: Jan Beulich <jbeulich@suse.com>
> 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
next prev parent reply other threads:[~2026-08-05 8:43 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-05 8:21 [PATCH 0/4] xen: cleanup config files Juergen Gross
2026-08-05 8:21 ` [PATCH 1/4] x86/xen: Remove redundant config dependency on X86_LOCAL_APIC Juergen Gross
2026-08-05 8:37 ` Jan Beulich
2026-08-05 8:40 ` Jan Beulich
2026-08-05 8:43 ` Andrew Cooper [this message]
2026-08-05 22:30 ` Stefano Stabellini
2026-08-05 8:21 ` [PATCH 2/4] xen: Drop CONFIG_XEN_PVHVM Juergen Gross
2026-08-05 8:28 ` Andrew Cooper
2026-08-05 8:36 ` Juergen Gross
2026-08-06 1:51 ` Jason Andryuk
2026-08-05 22:45 ` Stefano Stabellini
2026-08-05 8:21 ` [PATCH 3/4] xen: Drop CONFIG_XEN_AUTO_XLATE Juergen Gross
2026-08-05 8:42 ` Jan Beulich
2026-08-05 8:56 ` Juergen Gross
2026-08-05 22:47 ` Stefano Stabellini
2026-08-05 8:21 ` [PATCH 4/4] x86/xen: Drop CONFIG_XEN_PVHVM_SMP Juergen Gross
2026-08-05 8:44 ` Jan Beulich
2026-08-05 8:55 ` Juergen Gross
2026-08-05 9:04 ` Jan Beulich
2026-08-05 9:44 ` Jürgen Groß
2026-08-05 9:55 ` Jan Beulich
2026-08-05 22:49 ` Stefano Stabellini
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