Messages in this thread | | | From | Thomas Schlichter <> | Subject | Re: [RFC Patch] use MTRR for write combining if PAT is not available | Date | Tue, 20 Oct 2009 22:35:12 +0200 |
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Ingo Molnar wrote: > * Thomas Schlichter <thomas.schlichter@web.de> wrote: > > > or Perhaps just try to add mtrr only for the pci mmap case like the > > > 4th patch in this series.. > > > > I'd prefer this! ;-) > > Hm, we could perhaps do that - but i think we should only do that on > systems that have PAT disabled.
The patch I sent should do exactly that.
> Which brings up the question of how to properly QA such a narrow segment > of the market. Maybe disabling CONFIG_X86_PAT should enable that logic > too.
When CONFIG_X86_PAT is disabled, pat_enabled is 0, and thus my new code should be active. Or do I miss something?
What do you think about the latest version of my patch series I just sent?
Kind regards, Thomas
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