linux-kernel - [PATCH] add missing MPSC to X86_INTEL_USERCOPY and _USE_PPRO

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Date:   Wed, 27 Jan 2021 19:08:23 +0100 (CET)
From:   Rene Rebe <rene@...ctcode.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH] add missing MPSC to X86_INTEL_USERCOPY and
 _USE_PPRO_CHECKSUM

Debugging some bizare memory corruption in certain kernel configs on
some machines, I noticed MPSC (1st gen Intel X64 Nocona) is missing in
selecting X86_INTEL_USERCOPY and X86_USE_PPRO_CHECKSUM. Unless someone
has a good reason not to, I think MPSC should select the two, and
maybe MATOM should also made select X86_INTEL_USERCOPY?

Signed-of-by: René Rebe <rene@...ctcode.de>

--- linux-5.10/arch/x86/Kconfig.cpu.vanilla	2021-01-27 16:09:20.163930078 +0100
+++ linux-5.10/arch/x86/Kconfig.cpu	2021-01-27 16:36:35.064014421 +0100
@@ -336,11 +336,11 @@
 
 config X86_INTEL_USERCOPY
 	def_bool y
-	depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON || MCORE2
+	depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON || MCORE2 || MPSC
 
 config X86_USE_PPRO_CHECKSUM
 	def_bool y
-	depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MCORE2 || MATOM
+	depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MCORE2 || MATOM || MPSC
 
 config X86_USE_3DNOW
 	def_bool y


-- 
  René Rebe, ExactCODE GmbH, Lietzenburger Str. 42, DE-10789 Berlin
  https://exactcode.com | https://t2sde.org | https://rene.rebe.de