On Monday 16 July 2007 11:42:53 am Nate Lawson wrote:
John Baldwin wrote:
On Saturday 16 June 2007 01:09:27 pm Nate Lawson wrote:
If you have a pentium 3 that works for speedstep, please try this
patch.
It fixes the PAE case. Compile-tested.
Hmm, I see it's no longer getting the physical address, just virtual.
So need to fix that part.
Attached is the updated patch. It uses the low kernel map where P=V and
fixes the callback. I just need someone who is using smi-speedstep
(440bx chipset with pentium 3) to make sure the device still attaches.
Patch should work on 6.x and 7.x.
Why do you need a V == P page?
I don't. I was just trying to choose a range where I was guaranteed
there would be any mapping at all. Aren't there some physical regions
(VGA, ISA hole) that don't have a mapping? Thus, it's best to ask for
RAM at 1 MB+ unless the device has special requirements, right?
BTW, this is already committed to -current.
What do you mean by a range that doesn't have a "mapping"? Do you mean you
want bus_dma to give you memory not already in use? Why would it do that? :)
Why can't you just allocate any buffer under 4GB?
6 messages in org.freebsd.freebsd-currentsmi speedstep patch
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