[RFC PATCH 08/25] powerpc/book3s64/kuap: Rename MMU_FTR_RADIX_KUAP to MMU_FTR_KUAP

[Aneesh Kumar K.V]

The next set of patches adds support for kuap with hash translation.
In preparation for that rename/move kuap related functions to
non radix names.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar at linux.ibm.com>
---
 arch/powerpc/include/asm/book3s/64/kup.h | 16 ++++++++--------
 arch/powerpc/include/asm/mmu.h           |  6 +++---
 arch/powerpc/kernel/syscall_64.c         |  4 ++--
 arch/powerpc/mm/book3s64/pkeys.c         |  2 +-
 4 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/arch/powerpc/include/asm/book3s/64/kup.h b/arch/powerpc/include/asm/book3s/64/kup.h
index 047f4298c053..c56894b9b3a1 100644
--- a/arch/powerpc/include/asm/book3s/64/kup.h
+++ b/arch/powerpc/include/asm/book3s/64/kup.h
@@ -19,7 +19,7 @@
 	ld	\gpr, STACK_REGS_KUAP(r1)
 	isync
 	mtspr	SPRN_AMR, \gpr
-	END_MMU_FTR_SECTION_NESTED_IFSET(MMU_FTR_RADIX_KUAP, 67)
+	END_MMU_FTR_SECTION_NESTED_IFSET(MMU_FTR_KUAP, 67)
 #endif
 .endm
 
@@ -31,7 +31,7 @@
 	sldi	\gpr2, \gpr2, AMR_KUAP_SHIFT
 999:	tdne	\gpr1, \gpr2
 	EMIT_BUG_ENTRY 999b, __FILE__, __LINE__, (BUGFLAG_WARNING | BUGFLAG_ONCE)
-	END_MMU_FTR_SECTION_NESTED_IFSET(MMU_FTR_RADIX_KUAP, 67)
+	END_MMU_FTR_SECTION_NESTED_IFSET(MMU_FTR_KUAP, 67)
 #endif
 .endm
 
@@ -51,7 +51,7 @@
 	mtspr	SPRN_AMR, \gpr2
 	isync
 99:
-	END_MMU_FTR_SECTION_NESTED_IFSET(MMU_FTR_RADIX_KUAP, 67)
+	END_MMU_FTR_SECTION_NESTED_IFSET(MMU_FTR_KUAP, 67)
 #endif
 .endm
 
@@ -64,7 +64,7 @@
 
 static inline void kuap_restore_amr(struct pt_regs *regs)
 {
-	if (mmu_has_feature(MMU_FTR_RADIX_KUAP)) {
+	if (mmu_has_feature(MMU_FTR_KUAP)) {
 		isync();
 		mtspr(SPRN_AMR, regs->kuap);
 		/*
@@ -76,7 +76,7 @@ static inline void kuap_restore_amr(struct pt_regs *regs)
 
 static inline void kuap_check_amr(void)
 {
-	if (IS_ENABLED(CONFIG_PPC_KUAP_DEBUG) && mmu_has_feature(MMU_FTR_RADIX_KUAP))
+	if (IS_ENABLED(CONFIG_PPC_KUAP_DEBUG) && mmu_has_feature(MMU_FTR_KUAP))
 		WARN_ON_ONCE(mfspr(SPRN_AMR) != AMR_KUAP_BLOCKED);
 }
 
@@ -87,7 +87,7 @@ static inline void kuap_check_amr(void)
 
 static inline unsigned long get_kuap(void)
 {
-	if (!early_mmu_has_feature(MMU_FTR_RADIX_KUAP))
+	if (!early_mmu_has_feature(MMU_FTR_KUAP))
 		return 0;
 
 	return mfspr(SPRN_AMR);
@@ -95,7 +95,7 @@ static inline unsigned long get_kuap(void)
 
 static inline void set_kuap(unsigned long value)
 {
-	if (!early_mmu_has_feature(MMU_FTR_RADIX_KUAP))
+	if (!early_mmu_has_feature(MMU_FTR_KUAP))
 		return;
 
 	/*
@@ -145,7 +145,7 @@ static inline void restore_user_access(unsigned long flags)
 static inline bool
 bad_kuap_fault(struct pt_regs *regs, unsigned long address, bool is_write)
 {
-	return WARN(mmu_has_feature(MMU_FTR_RADIX_KUAP) &&
+	return WARN(mmu_has_feature(MMU_FTR_KUAP) &&
 		    (regs->kuap & (is_write ? AMR_KUAP_BLOCK_WRITE : AMR_KUAP_BLOCK_READ)),
 		    "Bug: %s fault blocked by AMR!", is_write ? "Write" : "Read");
 }
diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h
index f6fcc9daf6ac..55b746d6b844 100644
--- a/arch/powerpc/include/asm/mmu.h
+++ b/arch/powerpc/include/asm/mmu.h
@@ -112,7 +112,7 @@
 /*
  * Supports KUAP (key 0 controlling userspace addresses) on radix
  */
-#define MMU_FTR_RADIX_KUAP		ASM_CONST(0x80000000)
+#define MMU_FTR_KUAP			ASM_CONST(0x80000000)
 
 /* MMU feature bit sets for various CPUs */
 #define MMU_FTRS_DEFAULT_HPTE_ARCH_V2	\
@@ -174,10 +174,10 @@ enum {
 #endif
 #ifdef CONFIG_PPC_RADIX_MMU
 		MMU_FTR_TYPE_RADIX |
+#endif /* CONFIG_PPC_RADIX_MMU */
 #ifdef CONFIG_PPC_KUAP
-		MMU_FTR_RADIX_KUAP |
+	MMU_FTR_KUAP |
 #endif /* CONFIG_PPC_KUAP */
-#endif /* CONFIG_PPC_RADIX_MMU */
 #ifdef CONFIG_PPC_MEM_KEYS
 	MMU_FTR_PKEY |
 #endif
diff --git a/arch/powerpc/kernel/syscall_64.c b/arch/powerpc/kernel/syscall_64.c
index 09695e042363..c0fdb02a13d5 100644
--- a/arch/powerpc/kernel/syscall_64.c
+++ b/arch/powerpc/kernel/syscall_64.c
@@ -314,7 +314,7 @@ notrace unsigned long interrupt_exit_kernel_prepare(struct pt_regs *regs, unsign
 	BUG_ON(regs->msr & MSR_PR);
 	BUG_ON(!FULL_REGS(regs));
 
-	if (mmu_has_feature(MMU_FTR_RADIX_KUAP)) {
+	if (mmu_has_feature(MMU_FTR_KUAP)) {
 		amr = mfspr(SPRN_AMR);
 		if (IS_ENABLED(CONFIG_PPC_KUAP_DEBUG)) /* kuap_check_amr() */
 			WARN_ON_ONCE(amr != AMR_KUAP_BLOCKED);
@@ -377,7 +377,7 @@ notrace unsigned long interrupt_exit_kernel_prepare(struct pt_regs *regs, unsign
 	 * We don't need to restore AMR on the way back to userspace for KUAP.
 	 * The value of AMR only matters while we're in the kernel.
 	 */
-	if (mmu_has_feature(MMU_FTR_RADIX_KUAP) && (regs->kuap != amr)) {
+	if (mmu_has_feature(MMU_FTR_KUAP) && (regs->kuap != amr)) {
 		isync();
 		mtspr(SPRN_AMR, regs->kuap);
 	}
diff --git a/arch/powerpc/mm/book3s64/pkeys.c b/arch/powerpc/mm/book3s64/pkeys.c
index dc6b56c6e004..727284607fa8 100644
--- a/arch/powerpc/mm/book3s64/pkeys.c
+++ b/arch/powerpc/mm/book3s64/pkeys.c
@@ -227,7 +227,7 @@ void setup_kuap(bool disabled)
 
 	if (smp_processor_id() == boot_cpuid) {
 		pr_info("Activating Kernel Userspace Access Prevention\n");
-		cur_cpu_spec->mmu_features |= MMU_FTR_RADIX_KUAP;
+		cur_cpu_spec->mmu_features |= MMU_FTR_KUAP;
 	}
 
 	/* Make sure userspace can't change the AMR */
-- 
2.25.3