linux-kernel - [PATCH v3 3/7] x86/mm/pat: Replace cpu_has_pat with boot_cpu

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Date:	Wed, 23 Mar 2016 15:41:59 -0600
From:	Toshi Kani <toshi.kani@....com>
To:	mingo@...nel.org, bp@...e.de, hpa@...or.com, tglx@...utronix.de
Cc:	mcgrof@...e.com, jgross@...e.com, paul.gortmaker@...driver.com,
	konrad.wilk@...cle.com, elliott@....com, x86@...nel.org,
	xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org,
	Toshi Kani <toshi.kani@....com>
Subject: [PATCH v3 3/7] x86/mm/pat: Replace cpu_has_pat with boot_cpu_has

Borislav Petkov wrote:
> 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>
Cc: Borislav Petkov <bp@...e.de>
Cc: Luis R. Rodriguez <mcgrof@...e.com>
Cc: Juergen Gross <jgross@...e.com>
Cc: Robert Elliott <elliott@....com>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
---
 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 3c08a27..3aea1ab 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.