Messages in this thread | | | From | David Woodhouse <> | Subject | Re: [linux-audio-dev] low-latency scheduling patch for 2.4.0 | Date | Tue, 30 Jan 2001 16:19:14 +0000 |
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jadb@redhat.com said: > I wasn't thinking of running the kernel XIP from writable, but even > trying to do that from the filesystem is a mess. If you're going to be > that way about it...
Heh. I am. Read-only XIP is going to be doable, but writable XIP means that any time you start to write to the flash chip, you have to find all the mappings of every page from that chip and mark them absent, then deal properly with faults on them; making processes sleep till the chip is in a readable state again. It's going to suck. Lots.
I'm not going to emulate our beloved leader and declare that it's never going to be supported - I have no particular problem with someone doing this, as long as I don't have to get too involved and it doesn't end up in my CVS tree with me being the one who's expected to feed/justify it to Linus.
> /me hands over the crackpipe
You don't want writable XIP. You just think you do, because you work for a software company and you're not allowed to call the hardware designers naughty names when they fail to realise that compression is far more useful than XIP and also cheaper, in 99% of cases.
-- dwmw2
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