Messages in this thread | | | Date | Wed, 21 Jan 2004 01:28:27 +0100 | From | Adrian Bunk <> | Subject | Re: [Dri-devel] [2.6 patch] disallow DRM on 386 |
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On Wed, Jan 21, 2004 at 12:04:59AM +0000, Alan Cox wrote: > On Maw, 2004-01-20 at 21:24, Adrian Bunk wrote: > > I got the following compile error in 2.6.1-mm5 with X86_CMPXCHG=n. > > This problem is not specific to -mm, and it always occurs when you > > include support for the 386 cpu (oposed to the 486 or later cpus) since > > in this case X86_CMPXCHG=n and therefoore cmpxchg isn't defined in > > include/asm-i386/system.h . > > > > The patch below disallows DRM if X86_CMPXCHG=n. > > Ugly. > > Fix system.h to always define cmpxchg.h and check its presence at > runtime when the DRM module loads, then you can build 386 kernels that > support DRI on higher machines. > > The problem isnt that cmpxchg definitely doesn't exist, so system.h is > wrong IMHO
???
AFAIR cmpxchg wasn't present in cpus earlier than the 486.
cu Adrian
--
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