[PATCH v3 3/7] x86/mm/pat: Replace cpu_has_pat with boot_cpu_has

From: Toshi Kani
Date: Wed Mar 23 2016 - 16:49:56 EST


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@xxxxxxx>
Signed-off-by: Toshi Kani <toshi.kani@xxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxx>
Cc: Luis R. Rodriguez <mcgrof@xxxxxxxx>
Cc: Juergen Gross <jgross@xxxxxxxx>
Cc: Robert Elliott <elliott@xxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
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.