• Linus Torvalds's avatar
    Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · f4e5b30d
    Linus Torvalds authored
    Pull x86 updates and fixes from Thomas Gleixner:
    
     - Fix the (late) fallout from the vector management rework causing
       hlist corruption and irq descriptor reference leaks caused by a
       missing sanity check.
    
       The straight forward fix triggered another long standing issue to
       surface. The pre rework code hid the issue due to being way slower,
       but now the chance that user space sees an EBUSY error return when
       updating irq affinities is way higher, though quite a bunch of
       userspace tools do not handle it properly despite the fact that EBUSY
       could be returned for at least 10 years.
    
       It turned out that the EBUSY return can be avoided completely by
       utilizing the existing delayed affinity update mechanism for irq
       remapped scenarios as well. That's a bit more error handling in the
       kernel, but avoids fruitless fingerpointing discussions with tool
       developers.
    
     - Decouple PHYSICAL_MASK from AMD SME as its going to be required for
       the upcoming Intel memory encryption support as well.
    
     - Handle legacy device ACPI detection properly for newer platforms
    
     - Fix the wrong argument ordering in the vector allocation tracepoint
    
     - Simplify the IDT setup code for the APIC=n case
    
     - Use the proper string helpers in the MTRR code
    
     - Remove a stale unused VDSO source file
    
     - Convert the microcode update lock to a raw spinlock as its used in
       atomic context.
    
    * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
      x86/intel_rdt: Enable CMT and MBM on new Skylake stepping
      x86/apic/vector: Print APIC control bits in debugfs
      genirq/affinity: Defer affinity setting if irq chip is busy
      x86/platform/uv: Use apic_ack_irq()
      x86/ioapic: Use apic_ack_irq()
      irq_remapping: Use apic_ack_irq()
      x86/apic: Provide apic_ack_irq()
      genirq/migration: Avoid out of line call if pending is not set
      genirq/generic_pending: Do not lose pending affinity update
      x86/apic/vector: Prevent hlist corruption and leaks
      x86/vector: Fix the args of vector_alloc tracepoint
      x86/idt: Simplify the idt_setup_apic_and_irq_gates()
      x86/platform/uv: Remove extra parentheses
      x86/mm: Decouple dynamic __PHYSICAL_MASK from AMD SME
      x86: Mark native_set_p4d() as __always_inline
      x86/microcode: Make the late update update_lock a raw lock for RT
      x86/mtrr: Convert to use strncpy_from_user() helper
      x86/mtrr: Convert to use match_string() helper
      x86/vdso: Remove unused file
      x86/i8237: Register device based on FADT legacy boot flag
    f4e5b30d
amd_iommu.c 103 KB