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    SubjectRe: [PATCH] Use correct x86 reboot vector
    Followup to:  <>
    By author: (Eric W. Biederman)
    In newsgroup:
    > There is some software at least that knows the difference. I have seen short
    > jumps in a couple of BIOS's. But a reset is very different from a
    > reboot. As memory must be reinitialized etc. So I think going to
    > 0xffff0000:0xfff0 would be a very bad idea if the intent is to get a
    > reliable reboot.

    I agree.

    Jumping to 0xf000:0xfff0 is widely accepted to be a standard warm
    reboot (as *should* an INIT, e.g. triplefault, be, as well -- make
    sure A20 is enabled before tripping, though.) For quite a few (most?)
    BIOSes, the vector that is stored at 0xf000:0xfff0 in the running
    (BIOS decompressed and shadowed) configuration is *not* the same as
    the one at the RESET vector.

    <> at work, <> in private!
    "Unix gives you enough rope to shoot yourself in the foot."
    Architectures needed: ia64 m68k mips64 ppc ppc64 s390 s390x sh v850 x86-64
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      Last update: 2005-03-22 13:35    [W:0.032 / U:38.552 seconds]
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