linux-kernel - [tip:x86/mm] x86/mm/pat: Replace cpu_has_pat with boot_cpu

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Message-ID: <tip-d63dcf49cf5ae5605f4d14229e3888e104f294b1@git.kernel.org>
Date:	Tue, 29 Mar 2016 03:38:47 -0700
From:	tip-bot for Toshi Kani <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	tglx@...utronix.de, bp@...e.de, toshi.kani@...com, jgross@...e.com,
	mingo@...nel.org, bp@...en8.de, akpm@...ux-foundation.org,
	peterz@...radead.org, mcgrof@...e.com,
	linux-kernel@...r.kernel.org, brgerst@...il.com,
	toshi.kani@....com, dvlasenk@...hat.com, luto@...capital.net,
	elliott@....com, torvalds@...ux-foundation.org, hpa@...or.com
Subject: [tip:x86/mm] x86/mm/pat: Replace cpu_has_pat with boot_cpu_has()

Commit-ID:  d63dcf49cf5ae5605f4d14229e3888e104f294b1
Gitweb:     http://git.kernel.org/tip/d63dcf49cf5ae5605f4d14229e3888e104f294b1
Author:     Toshi Kani <toshi.kani@....com>
AuthorDate: Wed, 23 Mar 2016 15:41:59 -0600
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Tue, 29 Mar 2016 12:23:26 +0200

x86/mm/pat: Replace cpu_has_pat with boot_cpu_has()

Borislav Petkov suggested:

 > Please use on init paths boot_cpu_has(X86_FEATURE_PAT) and on fast
 > paths static_cpu_has(X86_FEATURE_PAT). No more of that cpu_has_XXX
 > ugliness.

Replace the use of cpu_has_pat on init paths with boot_cpu_has().

Suggested-by: Borislav Petkov <bp@...e.de>
Signed-off-by: Toshi Kani <toshi.kani@....com>
Reviewed-by: Thomas Gleixner <tglx@...utronix.de>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Andy Lutomirski <luto@...capital.net>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Brian Gerst <brgerst@...il.com>
Cc: Denys Vlasenko <dvlasenk@...hat.com>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: Juergen Gross <jgross@...e.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Luis R. Rodriguez <mcgrof@...e.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Robert Elliott <elliott@....com>
Cc: Toshi Kani <toshi.kani@...com>
Cc: konrad.wilk@...cle.com
Cc: paul.gortmaker@...driver.com
Cc: xen-devel@...ts.xenproject.org
Link: http://lkml.kernel.org/r/1458769323-24491-4-git-send-email-toshi.kani@hpe.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/mm/pat.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index 1cc1d37..59ec038 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -213,7 +213,7 @@ static void pat_bsp_init(u64 pat)
 {
 	u64 tmp_pat;
 
-	if (!cpu_has_pat) {
+	if (!boot_cpu_has(X86_FEATURE_PAT)) {
 		pat_disable("PAT not supported by CPU.");
 		return;
 	}
@@ -231,7 +231,7 @@ static void pat_bsp_init(u64 pat)
 
 static void pat_ap_init(u64 pat)
 {
-	if (!cpu_has_pat) {
+	if (!boot_cpu_has(X86_FEATURE_PAT)) {
 		/*
 		 * If this happens we are on a secondary CPU, but switched to
 		 * PAT on the boot CPU. We have no way to undo PAT.