linux-kernel - Re: [RFC][PATCH 3/3] x86: make MP a required-feature on 64-bit

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Message-ID: <53A47461.4050409@zytor.com>
Date:	Fri, 20 Jun 2014 10:50:25 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Borislav Petkov <bp@...en8.de>
CC:	Dave Hansen <dave@...1.net>, linux-kernel@...r.kernel.org,
	x86@...nel.org, Andi Kleen <ak@...ux.intel.com>
Subject: Re: [RFC][PATCH 3/3] x86: make MP  a required-feature on 64-bit

Looking at the AMD init code, there is a whole bunch of other 32/64-bit
differences that are clearly bogus.  I also see that amd_k7_smp_check()
doesn't even *exist* on 64 bits, and that init_amd_k7() which calls
amd_k7_smp_check() only is ever called for family == 6, despite having
tests for family 7 and above in it.

Urgh.

Borislav, any way that you would be willing to take this on, or get
someone from AMD to clean up this mess?

	-hpa

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