linux-kernel - Re: x2apic boot failure on recent sandy bridge system

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Message-ID: <1323740475.1984.171.camel@sbsiddha-desk.sc.intel.com>
Date:	Mon, 12 Dec 2011 17:41:15 -0800
From:	Suresh Siddha <suresh.b.siddha@...el.com>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	"Berck E. Nash" <flyboy@...il.com>, Ingo Molnar <mingo@...e.hu>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: x2apic boot failure on recent sandy bridge system

On Mon, 2011-12-12 at 17:29 -0800, Yinghai Lu wrote:
> but i don't think bios buy can go that far to enable intr-remapping
> without providing DMAR.

We never know. And also It is not just bios. kexec'd kernel with out the
interrupt-remapping support will also run into this issue and we should
handle this also gracefully.

thanks,
suresh

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