[lkml]   [2005]   [Nov]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [Fastboot] Re: [PATCH 1/4] stack overflow safe kdump (i386) - safe_smp_processor_id
    Andi Kleen <> writes:

    > Fernando Luis Vazquez Cao <> writes:
    >> To circumvent this problem I suggest implementing
    >> "safe_smp_processor_id()" (it already exists on x86_64) for i386 and
    >> IA64 and use it as a replacement to smp_processor_id in the reboot path
    >> to the dump capture kernel. This is a possible implementation for i386.
    > It's not fully safe, because a SMP kernel might run on a 32bit
    > system without APIC. Then hard_smp_processor_id() would fault.
    > (this cannot happen on x86-64)
    > You probably need to check one of the globals set by apic.c
    > when its disabled.

    Right. An SMP kernel on a uniprocessor, without apics.

    To my knowledge all SMP systems that linux supports have


    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2005-11-29 05:19    [W:0.023 / U:2.804 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site