Pull x86 apic updates from Thomas Gleixner:
- Cleanup the apic IPI implementation by removing duplicated code and
consolidating the functions into the APIC core.
- Implement a safe variant of the IPI broadcast mode. Contrary to
earlier attempts this uses the core tracking of which CPUs have been
brought online at least once so that a broadcast does not end up in
some dead end in BIOS/SMM code when the CPU is still waiting for
init. Once all CPUs have been brought up once, IPI broadcasting is
enabled. Before that regular one by one IPIs are issued.
- Drop the paravirt CR8 related functions as they have no user anymore
- Initialize the APIC TPR to block interrupt 16-31 as they are reserved
for CPU exceptions and should never be raised by any well behaving
device.
- Emit a warning when vector space exhaustion breaks the admin set
affinity of an interrupt.
- Make sure to use the NMI fallback when shutdown via reboot vector IPI
fails. The original code had conditions which prevent the code path
to be reached.
- Annotate various APIC config variables as RO after init.
[ The ipi broadcase change came in earlier through the cpu hotplug
branch, but I left the explanation in the commit message since it was
shared between the two different branches - Linus ]
* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (28 commits)
x86/apic/vector: Warn when vector space exhaustion breaks affinity
x86/apic: Annotate global config variables as "read-only after init"
x86/apic/x2apic: Implement IPI shorthands support
x86/apic/flat64: Remove the IPI shorthand decision logic
x86/apic: Share common IPI helpers
x86/apic: Remove the shorthand decision logic
x86/smp: Enhance native_send_call_func_ipi()
x86/smp: Move smp_function_call implementations into IPI code
x86/apic: Provide and use helper for send_IPI_allbutself()
x86/apic: Add static key to Control IPI shorthands
x86/apic: Move no_ipi_broadcast() out of 32bit
x86/apic: Add NMI_VECTOR wait to IPI shorthand
x86/apic: Remove dest argument from __default_send_IPI_shortcut()
x86/hotplug: Silence APIC and NMI when CPU is dead
x86/cpu: Move arch_smt_update() to a neutral place
x86/apic/uv: Make x2apic_extra_bits static
x86/apic: Consolidate the apic local headers
x86/apic: Move apic_flat_64 header into apic directory
x86/apic: Move ipi header into apic directory
x86/apic: Cleanup the include maze
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