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From: Richard Purdie <richard.purdie@linuxfoundation.org>
To: "Ashfield, Bruce" <Bruce.Ashfield@windriver.com>
Date: Wed, 13 Dec 2017 12:34:50 +0000
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Cc: "Lock, Joshua" <joshua.g.lock@intel.com>,
	openembedded-core <openembedded-core@lists.openembedded.org>
Subject: Fix for the APIC hangs in qemux86-64
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Hi Bruce,

https://bugzilla.yoctoproject.org/show_bug.cgi?id=12301

We've root caused the hangs we're seeing in qemux86-64 on our
autobuilder workers. We've identified a commit on 4.15-rc3 which fixes
the issue but backporting it to the autobuilder's host kernels will be
a pain.

As a workaround I'd like to enable x2apic on qemux86-64. Since that
works via MSRs it avoids the problem. 

Would it be a big issue to set CONFIG_X86_X2APIC=y for qemux86-64?

Cheers,

Richard