linux-kernel - Re: [PATCH] x86/acpi/boot: Correct acpi_is_processor

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Message-ID: <20251112172113.GFaRTCCfu2H6JpkZWB@fat_crate.local>
Date: Wed, 12 Nov 2025 18:21:13 +0100
From: Borislav Petkov <bp@...en8.de>
To: Mario Limonciello <mario.limonciello@....com>
Cc: Yazen Ghannam <yazen.ghannam@....com>, x86@...nel.org,
	linux-kernel@...r.kernel.org, Michal Pecio <michal.pecio@...il.com>,
	Eric DeVolder <eric.devolder@...cle.com>
Subject: Re: [PATCH] x86/acpi/boot: Correct acpi_is_processor_usable() check
 again

On Wed, Nov 12, 2025 at 10:35:13AM -0600, Mario Limonciello wrote:
> What version does the MADT in QEMU report today?  Presumably not all
> virtualization solutions make this assumption about this bit.
> 
> IE rather than clump all virtualization should we just detect QEMU and <
> ACPI 6.3?

Version 3. Yah, no idea what that means.

There's some discussion here:

https://lore.kernel.org/qemu-devel/20230510174510.089ecb14@imammedo.users.ipa.redhat.com/

but I'm not fixing the kernel because qemu is doing what it desires.
 
-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette