Messages in this thread | | | From | "H. Peter Anvin" <> | Subject | Re: [PATCH] 2.5 ide 48-bit usage | Date | 7 May 2003 15:55:13 -0700 |
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Followup to: <b9bupr$jkm$2@tangens.hometree.net> By author: "Henning P. Schmiedehausen" <hps@intermeta.de> In newsgroup: linux.dev.kernel > > Jens Axboe <axboe@suse.de> writes: > > >I dunno what the purpose of that would be exactly, I guess to cater to > >some hardware odditites? > > Wild guess: You can use larger transfer sizes with the 48 bit > interface, even when adressing the lower 28 bit space? > > This might be a win for applications that stream large contigous > blocks from/to a HD (Video, Audio...) >
Right, Jens basically does something like:
use_48_bits := (address+length > 2^28) || (length >= 2^16)
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