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Star64_linux/arch/x86/kernel/apic
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Jan Beulich fe6f85ca12 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: bae3a8d330 ("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
2019-11-05 00:11:00 +01:00
..
apic.c x86/apic/32: Avoid bogus LDR warnings 2019-11-05 00:11:00 +01:00
apic_common.c
apic_flat_64.c x86/apic/flat64: Remove the IPI shorthand decision logic 2019-07-25 16:12:02 +02:00
apic_noop.c
apic_numachip.c
bigsmp_32.c Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-09-17 12:04:39 -07:00
hw_nmi.c
io_apic.c x86/apic: Fix arch_dynirq_lower_bound() bug for DT enabled machines 2019-08-26 12:11:23 +02:00
ipi.c x86/apic: Share common IPI helpers 2019-07-25 16:12:02 +02:00
local.h x86/apic/x2apic: Implement IPI shorthands support 2019-07-25 16:12:02 +02:00
Makefile
msi.c
probe_32.c Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-09-17 12:04:39 -07:00
probe_64.c x86/apic/flat64: Remove the IPI shorthand decision logic 2019-07-25 16:12:02 +02:00
vector.c x86/apic/vector: Warn when vector space exhaustion breaks affinity 2019-08-28 14:44:08 +02:00
x2apic_cluster.c x86/apic/x2apic: Fix a NULL pointer deref when handling a dying cpu 2019-10-15 10:57:09 +02:00
x2apic_phys.c x86/apic/x2apic: Implement IPI shorthands support 2019-07-25 16:12:02 +02:00
x2apic_uv_x.c