linux-kernel - [PATCH v2 01/12] powerpc/32s: Move setup

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Message-Id: <0b7a13d414837e58264edc336b89c2fe9f35f9bc.1622708530.git.christophe.leroy@csgroup.eu>
Date:   Thu,  3 Jun 2021 08:41:36 +0000 (UTC)
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH v2 01/12] powerpc/32s: Move setup_{kuep/kuap}() into
 {kuep/kuap}.c

Avoids the #ifdef in mmu.c

Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
---
 arch/powerpc/mm/book3s32/Makefile |  1 +
 arch/powerpc/mm/book3s32/kuap.c   | 11 +++++++++++
 arch/powerpc/mm/book3s32/kuep.c   |  8 ++++++++
 arch/powerpc/mm/book3s32/mmu.c    | 20 --------------------
 4 files changed, 20 insertions(+), 20 deletions(-)
 create mode 100644 arch/powerpc/mm/book3s32/kuap.c

diff --git a/arch/powerpc/mm/book3s32/Makefile b/arch/powerpc/mm/book3s32/Makefile
index 7f0c8a78ba0c..15f4773643d2 100644
--- a/arch/powerpc/mm/book3s32/Makefile
+++ b/arch/powerpc/mm/book3s32/Makefile
@@ -10,3 +10,4 @@ obj-y += mmu.o mmu_context.o
 obj-$(CONFIG_PPC_BOOK3S_603) += nohash_low.o
 obj-$(CONFIG_PPC_BOOK3S_604) += hash_low.o tlb.o
 obj-$(CONFIG_PPC_KUEP) += kuep.o
+obj-$(CONFIG_PPC_KUAP) += kuap.o
diff --git a/arch/powerpc/mm/book3s32/kuap.c b/arch/powerpc/mm/book3s32/kuap.c
new file mode 100644
index 000000000000..1df55392878e
--- /dev/null
+++ b/arch/powerpc/mm/book3s32/kuap.c
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <asm/kup.h>
+
+void __init setup_kuap(bool disabled)
+{
+	pr_info("Activating Kernel Userspace Access Protection\n");
+
+	if (disabled)
+		pr_warn("KUAP cannot be disabled yet on 6xx when compiled in\n");
+}
diff --git a/arch/powerpc/mm/book3s32/kuep.c b/arch/powerpc/mm/book3s32/kuep.c
index 8ed1b8634839..6eafe7b2b031 100644
--- a/arch/powerpc/mm/book3s32/kuep.c
+++ b/arch/powerpc/mm/book3s32/kuep.c
@@ -38,3 +38,11 @@ void kuep_unlock(void)
 {
 	kuep_update(mfsr(0) & ~SR_NX);
 }
+
+void __init setup_kuep(bool disabled)
+{
+	pr_info("Activating Kernel Userspace Execution Prevention\n");
+
+	if (disabled)
+		pr_warn("KUEP cannot be disabled yet on 6xx when compiled in\n");
+}
diff --git a/arch/powerpc/mm/book3s32/mmu.c b/arch/powerpc/mm/book3s32/mmu.c
index 159930351d9f..27061583a010 100644
--- a/arch/powerpc/mm/book3s32/mmu.c
+++ b/arch/powerpc/mm/book3s32/mmu.c
@@ -445,26 +445,6 @@ void __init print_system_hash_info(void)
 		pr_info("Hash_mask         = 0x%lx\n", Hash_mask);
 }
 
-#ifdef CONFIG_PPC_KUEP
-void __init setup_kuep(bool disabled)
-{
-	pr_info("Activating Kernel Userspace Execution Prevention\n");
-
-	if (disabled)
-		pr_warn("KUEP cannot be disabled yet on 6xx when compiled in\n");
-}
-#endif
-
-#ifdef CONFIG_PPC_KUAP
-void __init setup_kuap(bool disabled)
-{
-	pr_info("Activating Kernel Userspace Access Protection\n");
-
-	if (disabled)
-		pr_warn("KUAP cannot be disabled yet on 6xx when compiled in\n");
-}
-#endif
-
 void __init early_init_mmu(void)
 {
 }
-- 
2.25.0