Messages in this thread | | | Subject | Re: CONFIG_BIGMEM and rawio | Date | Thu, 2 Sep 1999 22:03:45 +0100 (BST) | From | Alan Cox <> |
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> > And you can _safely_ use raw-io in a _stock_ 2.3.16 with bigmem enabled > > too; you won't risk to crash the kernel but you'll get a graceful -EIO in > > the _worst_ case. > But this means that all user mode programs which plan to use raw-io must > support fall-back to normal io. Even worse, [buggy] programs would run > on > test machines [with less memory], and fail in actual production [with > more > memory]. A bitflags would be a good idea.
Transparently using bounce buffers would be an even better idea.
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