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

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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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