From: Dave Jones <davej@redhat.com>
To: "Darrick J. Wong" <djwong@us.ibm.com>
Cc: Michael Ellerman <michael@ellerman.id.au>,
linux-kernel@vger.kernel.org, Chris McDermott <lcm@us.ibm.com>
Subject: Re: [PATCH] leave APIC code inactive by default on i386
Date: Wed, 1 Mar 2006 17:51:03 -0500 [thread overview]
Message-ID: <20060301225103.GE1440@redhat.com> (raw)
In-Reply-To: <1141253258.30185.60.camel@localhost.localdomain>
On Wed, Mar 01, 2006 at 02:47:38PM -0800, Darrick J. Wong wrote:
> On Wed, 2006-03-01 at 17:14 -0500, Dave Jones wrote:
>
> > In light of Matthew's comments in this thread though, I'm also wondering
> > if we can now get by without this diff, and just enable it by default now
> > that the kernel respects that the BIOS and leaves it alone if it's been
> > disabled.
>
> Actually, it seems that there are Lenovo ThinkCenter P4 machines with
> buggy BIOSes that tell us that we can enable the APIC ... but doing so
> eventually causes the system to hang. Granted, the Google-recommended
> fixes are "noapic" or "Update the BIOS", but perhaps it would be best to
> leave it off _except_ for the few cases where we know that we need it.
>
> (Then again, the correct solution in this case is to fix the BIOS...)
Indeed. And also blacklist the bad ones with DMI entries.
Dave
next prev parent reply other threads:[~2006-03-01 22:51 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-20 1:20 [PATCH] leave APIC code inactive by default on i386 Darrick J. Wong
2006-01-20 14:42 ` Jan Engelhardt
2006-03-01 3:57 ` Michael Ellerman
2006-03-01 4:33 ` Dave Jones
2006-03-01 5:10 ` Michael Ellerman
2006-03-01 13:38 ` Dave Jones
2006-03-01 13:52 ` Matthew Garrett
2006-03-01 6:36 ` Zwane Mwaikambo
2006-03-01 13:39 ` Dave Jones
2006-03-01 21:29 ` Darrick J. Wong
2006-03-01 22:14 ` Dave Jones
2006-03-01 22:47 ` Darrick J. Wong
2006-03-01 22:51 ` Dave Jones [this message]
2006-03-01 23:29 ` Darrick J. Wong
2006-03-06 12:50 ` Pavel Machek
2006-03-06 17:17 ` Dave Jones
2006-03-06 17:41 ` Pavel Machek
2006-03-06 17:52 ` Dave Jones
2006-03-06 17:58 ` Pavel Machek
2006-03-06 18:17 ` Dave Jones
2006-03-06 19:05 ` Darrick J. Wong
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