Re: [Dri-devel] Re: Improved DRM support for cant_use_aperture

David Mosberger (davidm@napali.hpl.hp.com)
Mon, 12 May 2003 13:19:17 -0700


>>>>> On 12 May 2003 21:48:31 +0200, Michel Dänzer <michel@daenzer.net> said:

>> using an old kernel that doesn't have asm/agp.h yet?).

Michel> That's it.

OK, thanks for clarifying.

Michel> So we have to check the version before #including
Michel> <asm/agp.h>. Then, we can do something like

Michel> #ifndef PAGE_AGP #define PAGE_AGP PAGE_KERNEL_NOCACHE #endif

Michel> Or am I missing something?

Basically correct, except that the patch also needs an improved
version of vmap(), which was introduced in 2.5.68 only (IIRC). I'll
update my patch so it is a no-op unless you have a kernel >= 2.5.68.

--david
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