• Tejun Heo's avatar
    x86, NUMA: Enable emulation on 32bit too · 1b7e03ef
    Tejun Heo authored
    Now that NUMA init path is unified, NUMA emulation can be enabled on
    32bit.  Make numa_emluation.c safe on 32bit by doing the followings.
    
    * Define MAX_DMA32_PFN on 32bit too.
    
    * Include bootmem.h for max_pfn declaration.
    
    * Use u64 explicitly and always use PFN_PHYS() when converting page
      number to address.
    
    * Avoid __udivdi3() generation on 32bit by doing number of pages
      calculation instead in split_nodes_interleave().
    
    And drop X86_64 dependency from Kconfig.
    Signed-off-by: default avatarTejun Heo <tj@kernel.org>
    Cc: Ingo Molnar <mingo@redhat.com>
    Cc: Yinghai Lu <yinghai@kernel.org>
    Cc: David Rientjes <rientjes@google.com>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: "H. Peter Anvin" <hpa@zytor.com>
    1b7e03ef
numa_emulation.c 12.9 KB