On Wed, 2008-01-09 at 18:21 +0000, Christoph Hellwig wrote: > On Wed, Jan 09, 2008 at 01:18:44PM -0500, Pavel Roskin wrote: > > notification without patching the kernel. But if no such solution is > > found, I would also support reverting the patch that removed fault > > notifiers on i386. > > With your fixation on not patching the kernel you sound like a windows > developer. There is no problem with patching the kernel, but the best > patching of that kernel is that which happens upstream so please folks > start submitting an mmiotrace variant for kernel inclusion. > > Then again I don't quite get why you absolutely want to track pagefaults > anyway. Just hooking into ioremap and read*/write* and iomap + > ioread*/iowrite* would be much easier and also a lot faster. It would > also allow adding a nice sysfs attribute to enable this per-device.
Because binary drivers don't use ioread/iowrite/readX/writeX (or if they do, they've long been inlined in the blob). The only solution is to map things as non-accessible and trap the page faults. It's a sane thing to do, Christoph, I don't think it's a unreasonable request to put the hooks back in. Cheers, Ben. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
