lkml.org 
[lkml]   [2006]   [Jan]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectRe: Inclusion of x86_64 memorize ioapic at bootup patch
    From
    Date
    yhlu <yhlu.kernel@gmail.com> writes:

    > andi,
    >
    > In LinuxBIOS, we don't set the MPS 0x467 and the AP still can be started by BSP.
    >
    > are these really needed for x86_64?
    >
    > Dprintk("Setting warm reset code and vector.\n");
    >
    > CMOS_WRITE(0xa, 0xf);
    > local_flush_tlb();
    > Dprintk("1.\n");
    > *((volatile unsigned short *) phys_to_virt(0x469)) = start_rip >> 4;
    > Dprintk("2.\n");
    > *((volatile unsigned short *) phys_to_virt(0x467)) = start_rip & 0xf;
    > Dprintk("3.\n");
    >
    > the STARTUP IPI should work well with MPS v1.4

    There are very large x86 machines that a reset is sent to the remote
    cpu and thus 0x40:0x67 and 0x40:0x67 becomes relevant.

    YH you didn't do something foolish and put a linuxbios table below
    0x500 did you?

    Eric
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2006-01-07 13:50    [W:0.021 / U:0.484 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site