* Yinghai Lu <yinghai@xxxxxxxxxx> wrote: > Ingo Molnar wrote: > > * Yinghai Lu <yinghai@xxxxxxxxxx> wrote: > > > >> Commit-ID: 78a8b35bc7abf8b8333d6f625e08c0f7cc1c3742 > >> Gitweb: http://git.kernel.org/tip/78a8b35bc7abf8b8333d6f625e08c0f7cc1c3742 > >> Author: Yinghai Lu <yinghai@xxxxxxxxxx> > >> AuthorDate: Thu, 12 Mar 2009 22:36:01 -0700 > >> Commit: Ingo Molnar <mingo@xxxxxxx> > >> CommitDate: Sat, 14 Mar 2009 12:20:07 +0100 > >> > >> x86: make e820_update_range() handle small range update > >> > >> Impact: enhance e820 code to handle more cases > >> > >> Try to handle new range which could be covered by one entry. > >> > >> Signed-off-by: Yinghai Lu <yinghai@xxxxxxxxxx> > >> Cc: jbeulich@xxxxxxxxxx > >> LKML-Reference: <49B9F0C1.10402@xxxxxxxxxx> > >> Signed-off-by: Ingo Molnar <mingo@xxxxxxx> > > > > -tip testing found a bootup crash + reboot due to this patch. > > > > config attached. The bootup crashes here: > > > > [ 0.000000] MTRR variable ranges enabled: > > [ 0.000000] 0 base 0000000000 mask FFC0000000 write-back > > [ 0.000000] 1 disabled > > [ 0.000000] 2 disabled > > [ 0.000000] 3 disabled > > [ 0.000000] 4 disabled > > [ 0.000000] 5 disabled > > [ 0.000000] 6 disabled > > [ 0.000000] 7 disabled > > [ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 > > [ 0.000000] get_mtrr: cpu0 reg00 base=0000000000 size=0000040000 write-back > > [ reboot ] > > > > what does the e820 map look like? [ 0.000000] BIOS-provided physical RAM map: [ 0.000000] BIOS-e820: 0000000000000000 - 000000000009f800 (usable) [ 0.000000] BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved) [ 0.000000] BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved) [ 0.000000] BIOS-e820: 0000000000100000 - 000000003fff0000 (usable) [ 0.000000] BIOS-e820: 000000003fff0000 - 000000003fff3000 (ACPI NVS) [ 0.000000] BIOS-e820: 000000003fff3000 - 0000000040000000 (ACPI data) [ 0.000000] BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved) [ 0.000000] BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved) Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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