linux-kernel - [PATCH v1 01/47] x86: mtrr: annotate mtrr_type_lookup() is only implemented on generic_mtrr

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Date:	Fri, 20 Mar 2015 16:17:51 -0700
From:	"Luis R. Rodriguez" <mcgrof@...not-panic.com>
To:	luto@...capital.net, mingo@...hat.com, tglx@...utronix.de,
	hpa@...or.com, jgross@...e.com, JBeulich@...e.com, bp@...e.de,
	suresh.b.siddha@...el.com, venkatesh.pallipadi@...el.com,
	airlied@...hat.com
Cc:	linux-kernel@...r.kernel.org, linux-fbdev@...r.kernel.org,
	x86@...nel.org, xen-devel@...ts.xenproject.org,
	"Luis R. Rodriguez" <mcgrof@...e.com>, Ingo Molnar <mingo@...e.hu>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Antonino Daplas <adaplas@...il.com>,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Tomi Valkeinen <tomi.valkeinen@...com>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Stefan Bader <stefan.bader@...onical.com>,
	konrad.wilk@...cle.com, ville.syrjala@...ux.intel.com,
	david.vrabel@...rix.com, jbeulich@...e.com, toshi.kani@...com,
	bhelgaas@...gle.com,
	Roger Pau Monné <roger.pau@...rix.com>,
	xen-devel@...ts.xensource.com
Subject: [PATCH v1 01/47] x86: mtrr: annotate mtrr_type_lookup() is only implemented on generic_mtrr_ops

From: "Luis R. Rodriguez" <mcgrof@...e.com>

There area few users of mtrr_type_lookup(), including PAT.
Note that PAT can be in theory enabled without MTRR fully
kicking in, such is the case with Xen.

Cc: Andy Lutomirski <luto@...capital.net>
Cc: Suresh Siddha <suresh.b.siddha@...el.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@...el.com>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Juergen Gross <jgross@...e.com>
Cc: Daniel Vetter <daniel.vetter@...ll.ch>
Cc: Dave Airlie <airlied@...hat.com>
Cc: Antonino Daplas <adaplas@...il.com>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>
Cc: Tomi Valkeinen <tomi.valkeinen@...com>
Cc: Dave Hansen <dave.hansen@...ux.intel.com>
Cc: venkatesh.pallipadi@...el.com
Cc: Stefan Bader <stefan.bader@...onical.com>
Cc: konrad.wilk@...cle.com
Cc: ville.syrjala@...ux.intel.com
Cc: david.vrabel@...rix.com
Cc: jbeulich@...e.com
Cc: toshi.kani@...com
Cc: bhelgaas@...gle.com
Cc: Roger Pau Monné <roger.pau@...rix.com>
Cc: linux-fbdev@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Cc: xen-devel@...ts.xensource.com
Signed-off-by: Luis R. Rodriguez <mcgrof@...e.com>
---
 arch/x86/kernel/cpu/mtrr/generic.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kernel/cpu/mtrr/generic.c b/arch/x86/kernel/cpu/mtrr/generic.c
index 7d74f7b..09c82de 100644
--- a/arch/x86/kernel/cpu/mtrr/generic.c
+++ b/arch/x86/kernel/cpu/mtrr/generic.c
@@ -230,6 +230,8 @@ u8 mtrr_type_lookup(u64 start, u64 end)
 	int repeat;
 	u64 partial_end;
 
+	/* XXX: Currently only implemented on generic_mtrr_ops */
+
 	type = __mtrr_type_lookup(start, end, &partial_end, &repeat);
 
 	/*
-- 
2.3.2.209.gd67f9d5.dirty

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