Messages in this thread | | | Date | Wed, 27 Jun 2007 12:44:01 +0200 | From | Pim Zandbergen <> | Subject | Re: [PATCH] trim memory not covered by WB MTRRs |
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First: Jesse saved my life by releasing a patch that made my GigaByte Intel G33 based motherboard use all of its 8GB RAM and not be slow as hell.
Then: GigaByte released a BIOS update that fixed the root of the problem. I went back from patched vanilla kernel to "official" Fedora kernel.
Now: Jesse released a new patch and I tried if for fun on 2.6.22-rc6 It looks like the patch is releasing memory rather than trimming it:
Jun 27 12:22:56 corneille kernel: Linux version 2.6.22-rc6 (pim@corneille) (gcc version 4.1.2 20070502 (Red Hat 4.1.2-12)) #1 SMP Wed Jun 27 11:41:29 CEST 2007 Jun 27 12:22:56 corneille kernel: Command line: root=LABEL=/ console=ttyS0,38400 Jun 27 12:22:56 corneille kernel: BIOS-provided physical RAM map: Jun 27 12:22:56 corneille kernel: BIOS-e820: 0000000000000000 - 000000000009e800 (usable) Jun 27 12:22:56 corneille kernel: BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved) Jun 27 12:22:56 corneille kernel: BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved) Jun 27 12:22:56 corneille kernel: BIOS-e820: 0000000000100000 - 00000000cf5e0000 (usable) Jun 27 12:22:56 corneille kernel: BIOS-e820: 00000000cf5e0000 - 00000000cf5e3000 (ACPI NVS) Jun 27 12:22:56 corneille kernel: BIOS-e820: 00000000cf5e3000 - 00000000cf5f0000 (ACPI data) Jun 27 12:22:56 corneille kernel: BIOS-e820: 00000000cf5f0000 - 00000000cf600000 (reserved) Jun 27 12:22:56 corneille kernel: BIOS-e820: 00000000d0000000 - 00000000e0000000 (reserved) Jun 27 12:22:56 corneille kernel: BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved) Jun 27 12:22:56 corneille kernel: BIOS-e820: 0000000100000000 - 0000000230000000 (usable) Jun 27 12:22:56 corneille kernel: end_pfn_map = 2293760 Jun 27 12:22:56 corneille kernel: *************** Jun 27 12:22:56 corneille kernel: **** WARNING: likely BIOS bug Jun 27 12:22:56 corneille kernel: **** MTRRs don't cover all of memory, trimmed -65536 pages Jun 27 12:22:56 corneille kernel: ***************
I tried the earlier patch as well and it gives the same result. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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