Messages in this thread | | | From | Bill Davidsen <> | Subject | Re: Out of mtrrs | Date | Fri, 29 Aug 2008 23:16:00 -0400 |
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J.A. Magallón wrote: > Hi all... > > I'm using the xorg intel driver, and drm/X report it has no free mtrrs > in kernel to set up: > > one:~# cat /proc/mtrr > reg00: base=0xfffe0000 (4095MB), size= 128KB: write-protect, count=1 > reg01: base=0xfffc0000 (4095MB), size= 128KB: uncachable, count=1 > reg02: base=0x00000000 ( 0MB), size= 256MB: write-back, count=1 > reg03: base=0x10000000 ( 256MB), size= 256MB: write-back, count=1 > reg04: base=0x1f800000 ( 504MB), size= 8MB: uncachable, count=1 > reg05: base=0x1f600000 ( 502MB), size= 2MB: uncachable, count=1 > reg06: base=0x1f500000 ( 501MB), size= 1MB: uncachable, count=1 > reg07: base=0x00000000 ( 0MB), size= 128KB: uncachable, count=1 > > dmesg: > > [drm] Initialized i915 1.6.0 20060119 on minor 0 > mtrr: no more MTRRs available > > one:/var/log# grep Linear x.log > (--) intel(0): Linear framebuffer at 0x20000000 > > I think X tries to get a mtrr at 0x20000000, but kernel has no free one > to offer. > > Does this have any solution ?
I don't, but there have been a LOT of mtrr issues recently. I see that there were patches to -rc5 in that area. Many of my systems have RAM they can't use, even in 32bit PAE mode, and I just have the feeling that there is room for improvement here. For various reasons I would rather run 32 bit on some machines, and to have 3.2GB RAM used in a 8 or 16GB machine seems undesirable at the least, and with PAE and at least three unused mtrr I assume that the problem is soluable, just not today. :-(
I will try a 2.6.27-rc5 build late next week, I have another box to build. > > TIA > > (Oh, this is 2.6.26.3, intel driver 2.4.2) > 00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, > 943/940GML Express Integrated Graphics Controller (rev 03) > > -- > J.A. Magallon <jamagallon()ono!com> \ Software is like > sex: > \ It's better when it's > free > Mandriva Linux release 2009.0 (Cooker) for i586 > Linux 2.6.25-jam13 (gcc 4.3.1 20080515 (GCC) #1 SMP > > >
-- Bill Davidsen <davidsen@tmr.com> "We have more to fear from the bungling of the incompetent than from the machinations of the wicked." - from Slashdot
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