From: Ingo Molnar <mingo@elte.hu>
To: Yinghai Lu <yinghai@kernel.org>
Cc: mingo@redhat.com, hpa@zytor.com, linux-kernel@vger.kernel.org,
tglx@linutronix.de, linux-tip-commits@vger.kernel.org
Subject: Re: [tip:x86/mm] x86: make e820_update_range() handle small range update
Date: Sat, 14 Mar 2009 19:40:10 +0100 [thread overview]
Message-ID: <20090314184010.GA17695@elte.hu> (raw)
In-Reply-To: <49BBF59D.7060401@kernel.org>
* Yinghai Lu <yinghai@kernel.org> wrote:
> Ingo Molnar wrote:
> > * Yinghai Lu <yinghai@kernel.org> wrote:
> >
> >> Commit-ID: 78a8b35bc7abf8b8333d6f625e08c0f7cc1c3742
> >> Gitweb: http://git.kernel.org/tip/78a8b35bc7abf8b8333d6f625e08c0f7cc1c3742
> >> Author: Yinghai Lu <yinghai@kernel.org>
> >> AuthorDate: Thu, 12 Mar 2009 22:36:01 -0700
> >> Commit: Ingo Molnar <mingo@elte.hu>
> >> 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@kernel.org>
> >> Cc: jbeulich@novell.com
> >> LKML-Reference: <49B9F0C1.10402@kernel.org>
> >> Signed-off-by: Ingo Molnar <mingo@elte.hu>
> >
> > -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
next prev parent reply other threads:[~2009-03-14 18:40 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-12 12:57 [PATCH] x86: clean up output resulting from update_mptable option Jan Beulich
2009-03-13 2:34 ` [tip:x86/mm] " Jan Beulich
2009-03-13 4:35 ` [PATCH] x86: fix e820_update_range() Yinghai Lu
2009-03-13 4:39 ` [tip:x86/mm] " Yinghai Lu
2009-03-13 5:36 ` [PATCH] x86: make e820_update_range to handle small range update Yinghai Lu
2009-03-14 11:39 ` [tip:x86/mm] x86: make e820_update_range() " Yinghai Lu
2009-03-14 12:17 ` Ingo Molnar
2009-03-14 18:21 ` Yinghai Lu
2009-03-14 18:40 ` Ingo Molnar [this message]
2009-03-14 21:32 ` Yinghai Lu
2009-03-15 6:04 ` Ingo Molnar
2009-03-15 6:20 ` Yinghai Lu
2009-03-15 6:25 ` Ingo Molnar
2009-03-15 6:12 ` [tip:x86/mm] x86: fix 64k corruption-check Yinghai Lu
2009-03-13 7:57 ` [PATCH] x86: fix e820_update_range() Jan Beulich
2009-03-13 11:13 ` Ingo Molnar
2009-03-13 18:22 ` Yinghai Lu
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