From: Michael Ellerman <mpe@ellerman.id.au>
Date: Wed, 27 Jul 2016 10:48:36 +0000 (+1000)
Subject: powerpc/mm: Add early_[cpu|mmu]_has_feature()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a141cca3892bb391d17a73dae917ad51d40ff69a;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

powerpc/mm: Add early_[cpu|mmu]_has_feature()

In later patches, we will be switching CPU and MMU feature checks to
use static keys.

For checks in early boot before jump label is initialized we need a
variant of [cpu|mmu]_has_feature() that doesn't use jump labels.

So create those called, unimaginatively, early_[cpu|mmu]_has_feature().

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---

diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h
index 7bb87017d9db..3d8dc9a7831d 100644
--- a/arch/powerpc/include/asm/cputable.h
+++ b/arch/powerpc/include/asm/cputable.h
@@ -577,12 +577,17 @@ enum {
 };
 #endif /* __powerpc64__ */
 
-static inline bool cpu_has_feature(unsigned long feature)
+static inline bool early_cpu_has_feature(unsigned long feature)
 {
 	return !!((CPU_FTRS_ALWAYS & feature) ||
 		  (CPU_FTRS_POSSIBLE & cur_cpu_spec->cpu_features & feature));
 }
 
+static inline bool cpu_has_feature(unsigned long feature)
+{
+	return early_cpu_has_feature(feature);
+}
+
 #define HBP_NUM 1
 
 #endif /* !__ASSEMBLY__ */
diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h
index f413b3213a3b..08b4c06604d6 100644
--- a/arch/powerpc/include/asm/mmu.h
+++ b/arch/powerpc/include/asm/mmu.h
@@ -135,11 +135,16 @@ enum {
 		0,
 };
 
-static inline bool mmu_has_feature(unsigned long feature)
+static inline bool early_mmu_has_feature(unsigned long feature)
 {
 	return !!(MMU_FTRS_POSSIBLE & cur_cpu_spec->mmu_features & feature);
 }
 
+static inline bool mmu_has_feature(unsigned long feature)
+{
+	return early_mmu_has_feature(feature);
+}
+
 static inline void mmu_clear_feature(unsigned long feature)
 {
 	cur_cpu_spec->mmu_features &= ~feature;
@@ -168,11 +173,21 @@ static inline bool radix_enabled(void)
 {
 	return mmu_has_feature(MMU_FTR_TYPE_RADIX);
 }
+
+static inline bool early_radix_enabled(void)
+{
+	return early_mmu_has_feature(MMU_FTR_TYPE_RADIX);
+}
 #else
 static inline bool radix_enabled(void)
 {
 	return false;
 }
+
+static inline bool early_radix_enabled(void)
+{
+	return false;
+}
 #endif
 
 #endif /* !__ASSEMBLY__ */