Re: FAILED: patch "[PATCH] x86/apic/32: Avoid bogus LDR warnings" failed to apply to 4.14-stable tree

[Sasha Levin <sashal@kernel.org>]

On Mon, Nov 11, 2019 at 07:29:58AM +0100, gregkh@linuxfoundation.org wrote:
>
>The patch below does not apply to the 4.14-stable tree.
>If someone wants it applied there, or to any other stable or longterm
>tree, then please email the backport, including the original git commit
>id to <stable@vger.kernel.org>.
>
>thanks,
>
>greg k-h
>
>------------------ original commit in Linus's tree ------------------
>
>From fe6f85ca121e9c74e7490fe66b0c5aae38e332c3 Mon Sep 17 00:00:00 2001
>From: Jan Beulich <jbeulich@suse.com>
>Date: Tue, 29 Oct 2019 10:34:19 +0100
>Subject: [PATCH] x86/apic/32: Avoid bogus LDR warnings
>
>The removal of the LDR initialization in the bigsmp_32 APIC code unearthed
>a problem in setup_local_APIC().
>
>The code checks unconditionally for a mismatch of the logical APIC id by
>comparing the early APIC id which was initialized in get_smp_config() with
>the actual LDR value in the APIC.
>
>Due to the removal of the bogus LDR initialization the check now can
>trigger on bigsmp_32 APIC systems emitting a warning for every booting
>CPU. This is of course a false positive because the APIC is not using
>logical destination mode.
>
>Restrict the check and the possibly resulting fixup to systems which are
>actually using the APIC in logical destination mode.
>
>[ tglx: Massaged changelog and added Cc stable ]
>
>Fixes: bae3a8d3308 ("x86/apic: Do not initialize LDR and DFR for bigsmp")
>Signed-off-by: Jan Beulich <jbeulich@suse.com>
>Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
>Cc: stable@vger.kernel.org
>Link: https://lkml.kernel.org/r/666d8f91-b5a8-1afd-7add-821e72a35f03@suse.com

I've queued these additional patches as dependencies on 4.9 and 4.14:

9d4730880a6d3 ("x86/apic: Drop logical_smp_processor_id() inline")
30769b576ce79 ("x86/apic: Move pending interrupt check code into it's
own function")

-- 
Thanks,
Sasha