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    SubjectRe: Who uses hdx=bswap or hdx=swapdata?
    It used to be necessary on the IBM 830 CDROM but I think those have fallen
    into disrepair and have undergone many changes. The 830's likely need that
    still but probably can't boot for other reasons now, though.

    } Is the hdx=bswap or hdx=swapdata option actually in use?
    } When is it needed?
    } The current implementation can cause data corruptions on SMP with PIO
    } transfers:
    } It modifies the source buffer during disk writes, and these temporary
    } modifications (within the irq handler) are visible with mmap on SMP.
    }
    } Is it possible to remove the option entirely, or should it be fixed?
    }
    } --
    } Manfred
    }
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