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SubjectRe: [PATCH] leave APIC code inactive by default on i386
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
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