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    SubjectRe: kiobuf using kernel pages
    Date
    On Thu, 11 Nov 1999 12:56:23 +0000 (GMT), 
    Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:
    >> Trying to port the SGI lcrash code to 2.3.26 ix86. It compiles, runs,
    >> traps the oops, starts writing the dump to swap, dies with -EFAULT in
    >> sd_raw_rw. My guess is because the buffer address is c2c00000, i.e. I
    >
    >Firstly if your machine has crashed I wouldnt recommend invoking the scsi
    >disk layer. If your partition info is corrupt or the scsi malloc pool is
    >corrupt you could hit anything.

    Agreed. But SGI have gone to the bother of writing a free standing,
    raw i/o SCSI system to "handle" dumps even when the machine has
    crashed, using a pre formatted swap partition. I am not convinced
    myself if it is safe or not, only experience will show. Their patch is
    only against 2.2.13, I'm porting it to 2.3.26 for testing.


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