From: "H. Peter Anvin" <hpa@zytor.com>
To: Yinghai Lu <yinghai@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
Suresh Siddha <suresh.b.siddha@intel.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: tip/master broken with x2apic and kexec
Date: Tue, 13 Jul 2010 15:00:48 -0700 [thread overview]
Message-ID: <4C3CE210.2030902@zytor.com> (raw)
In-Reply-To: <4C3BD6AA.3070908@kernel.org>
On 07/12/2010 07:59 PM, Yinghai Lu wrote:
> tip/master:
> system1: BIOS enabled x2apic, first kernel boot well, and when kexec second kernel will cause system instant reboot.
>
> system2: BIOS not enable x2apic, first kernel boot well and enable x2apic, and kexec second kernel well. but when kexec third kernel will case system instant reboot.
>
> linus' tree is ok.
>
> but for system2 if boot with nox2apic ,intr-remaping off, iommu off, the kexec loop test will pass.
>
> the problem looks start in recent two or three weeks.
>
> Any idea?
>
> bisecting will take a while, because the system post take a while everytime.
>
> Thanks
>
> Yinghai Lu
OK, I found the bug... if you could test out the patch which will be
sent out shortly I would very much appreciate it.
-hpa
next prev parent reply other threads:[~2010-07-13 22:01 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-13 2:59 tip/master broken with x2apic and kexec Yinghai Lu
2010-07-13 3:29 ` Yinghai Lu
2010-07-13 6:40 ` H. Peter Anvin
2010-07-14 0:54 ` [tip:x86/alternatives] x86, alternatives: Fix one more open-coded 8-bit alternative number tip-bot for H. Peter Anvin
2010-07-14 0:54 ` [tip:x86/alternatives] x86, alternatives: BUG on encountering an invalid CPU feature number tip-bot for H. Peter Anvin
2010-07-13 22:00 ` H. Peter Anvin [this message]
2010-07-13 23:27 ` tip/master broken with x2apic and kexec Yinghai Lu
2010-07-14 20:35 ` Yinghai Lu
2010-07-14 21:05 ` Don Zickus
2010-07-14 22:07 ` Yinghai Lu
2010-07-14 21:23 ` Yinghai Lu
2010-07-14 22:57 ` Yinghai Lu
2010-07-15 0:03 ` Suresh Siddha
2010-07-15 2:01 ` Yinghai Lu
2010-07-15 7:00 ` [PATCH] x86: fix x2apic preenabled system with kexec Yinghai Lu
2010-07-15 18:16 ` Suresh Siddha
2010-07-15 20:10 ` Yinghai Lu
2010-07-15 20:40 ` Yinghai Lu
2010-07-17 0:48 ` [tip:x86/urgent] x86: Fix " tip-bot for Yinghai Lu
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