Re: [Dri-devel] Re: [adaplas@pol.net: Re: [Linux-fbdev-devel] Fwd:Re: [Dri-devel] future of DRI?]

2003-03-03 Thread Antonino Daplas
On Mon, 2003-03-03 at 09:25, Alan Cox wrote: > On early athlon you prefetch non cached memory and the cpu corrupts its > cache, on PII, PII mmap frame buffer against a cached page, but the > right kind of instruction in a loop with the instruction bridging the > two memory types and run it in a ti

Re: [Dri-devel] Re: [adaplas@pol.net: Re: [Linux-fbdev-devel] Fwd:Re: [Dri-devel] future of DRI?]

2003-03-02 Thread Alan Cox
On Mon, 2003-03-03 at 00:01, Antonino Daplas wrote: > > For some cases. The truth is a bit more horrible, and current fbdev has > > the same problem here. Any early Athlon, and almost any PII/PIII derived > > chip allows the user to bring the box down if they have access to > > a mix of cached and