Messages in this thread | | | Date | Thu, 14 Jun 2007 17:21:16 -0400 (EDT) | From | Justin Piszcz <> | Subject | Re: [PATCH] trim memory not covered by WB MTRRs |
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On Thu, 14 Jun 2007, Jesse Barnes wrote:
> On Thursday, June 14, 2007 1:26:07 Justin Piszcz wrote: >> On Thu, 14 Jun 2007, Pim Zandbergen wrote: >>> Thanks for this patch. I was having the exact same symptoms as >>> Justin Piszcz, on a different, but similar motherboard: >>> >>> Motherboard: GigaByte GA-G33-DS3R >>> BIOS rev: F2 >>> Chipset: Intel G33 >>> Memory: 8GB >>> Distro: Fedora 7 x86_64 >>> Kernel: kernel-2.6.21-1.3194.fc7 >>> >>> Building vanilla 2.6.22-rc4 with your patch solved the problem. >>> >>> I'm now seeing this in the syslog >>> >>> *************** >>> **** WARNING: likely BIOS bug >>> **** MTRRs don't cover all of memory, trimmed 196608 pages >>> *************** >>> >>> leaving me 7416672 kB of usable memory. >>> >>> If there's any way I can help with more info or testing, >>> then let me know. >>> >>> Thanks, >>> Pim > > Thanks for testing, Pim. Glad it works for you. Keep an eye out for > BIOS upgrades, the next version might fix it. > >> That's strange, I guess different chipsets 'chew' up different >> amounts of memory OR you have your DVT(?) (video-card >> memory/aperature) set to 256MB? I have mine set to 128MB, in top: >> >> Mem: 8039576k total, 6187304k used, 1852272k free, 696k >> buffers >> >> What type of memory are you using and what is your DVT set to? > > Different BIOSes will map things differently, so I'd expect differences > in the "trimmmed xxx pages" message across machines. But yeah, BIOS > config options can also affect things, in particular I've heard that > the fan control options change MTRR setup significantly. > > Jesse >
To Intel,
When will HECI be supported via the kernel? When it becomes supported, would that alter the MTRR map at all?
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