Re: Who uses hdx=bswap or hdx=swapdata?

[Cort Dougan <cort@fsmlabs.com>]

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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