• Linus Torvalds's avatar
    Merge branch 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 99306dfc
    Linus Torvalds authored
    Pull x86 timer updates from Thomas Gleixner:
     "These updates are related to TSC handling:
    
       - Support platforms which have synchronized TSCs but the boot CPU has
         a non zero TSC_ADJUST value, which is considered a firmware bug on
         normal systems.
    
         This applies to HPE/SGI UV platforms where the platform firmware
         uses TSC_ADJUST to ensure TSC synchronization across a huge number
         of sockets, but due to power on timings the boot CPU cannot be
         guaranteed to have a zero TSC_ADJUST register value.
    
       - Fix the ordering of udelay calibration and kvmclock_init()
    
       - Cleanup the udelay and calibration code"
    
    * 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
      x86/tsc: Mark cyc2ns_init() and detect_art() __init
      x86/platform/UV: Mark tsc_check_sync as an init function
      x86/tsc: Make CONFIG_X86_TSC=n build work again
      x86/platform/UV: Add check of TSC state set by UV BIOS
      x86/tsc: Provide a means to disable TSC ART
      x86/tsc: Drastically reduce the number of firmware bug warnings
      x86/tsc: Skip TSC test and error messages if already unstable
      x86/tsc: Add option that TSC on Socket 0 being non-zero is valid
      x86/timers: Move simple_udelay_calibration() past kvmclock_init()
      x86/timers: Make recalibrate_cpu_khz() void
      x86/timers: Move the simple udelay calibration to tsc.h
    99306dfc
x2apic_uv_x.c 40.4 KB