Messages in this thread |  | | Date | Thu, 15 May 2003 17:20:11 +0200 | From | Andi Kleen <> | Subject | Re: [PATCH] Use MTRRs by default for vesafb on x86-64 |
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On Thu, May 15, 2003 at 05:16:33PM +0200, Dave Jones wrote: > On Thu, May 15, 2003 at 04:56:40PM +0200, Andi Kleen wrote: > > > x86-64 cannot call the 32bit VESA BIOS. This means when vesafb is active > > it does software copying in the vesa frame buffer. This is insanely slow > > when the frame buffer is not marked for write combining. > > > > Some discussion showed that the use_mtrr flag was only off for some > > old broken ET4000 ISA card. x86-64 has no ISA, so this is no concern. > > Make the default depend on CONFIG_ISA. > > There are PCI ET4000's too. Though if we can get the PCI IDs for those, > we can work around them with a quirk. I have one *somewhere*, but it'll > take me a while to dig it out.
To make all 0.001 users left of them happy yes. I think the patch should be applied anyways.
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