From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Thu, 11 Apr 2024 10:27:49 +0200
Subject: Adding upstream version 6.6.15.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 arch/powerpc/include/asm/mman.h | 44 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 arch/powerpc/include/asm/mman.h

(limited to 'arch/powerpc/include/asm/mman.h')

diff --git a/arch/powerpc/include/asm/mman.h b/arch/powerpc/include/asm/mman.h
new file mode 100644
index 0000000000..17a77d47ed
--- /dev/null
+++ b/arch/powerpc/include/asm/mman.h
@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ */
+#ifndef _ASM_POWERPC_MMAN_H
+#define _ASM_POWERPC_MMAN_H
+
+#include <uapi/asm/mman.h>
+
+#ifdef CONFIG_PPC64
+
+#include <asm/cputable.h>
+#include <linux/mm.h>
+#include <linux/pkeys.h>
+#include <asm/cpu_has_feature.h>
+#include <asm/firmware.h>
+
+static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot,
+		unsigned long pkey)
+{
+#ifdef CONFIG_PPC_MEM_KEYS
+	return (((prot & PROT_SAO) ? VM_SAO : 0) | pkey_to_vmflag_bits(pkey));
+#else
+	return ((prot & PROT_SAO) ? VM_SAO : 0);
+#endif
+}
+#define arch_calc_vm_prot_bits(prot, pkey) arch_calc_vm_prot_bits(prot, pkey)
+
+static inline bool arch_validate_prot(unsigned long prot, unsigned long addr)
+{
+	if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM | PROT_SAO))
+		return false;
+	if (prot & PROT_SAO) {
+		if (!cpu_has_feature(CPU_FTR_SAO))
+			return false;
+		if (firmware_has_feature(FW_FEATURE_LPAR) &&
+		    !IS_ENABLED(CONFIG_PPC_PROT_SAO_LPAR))
+			return false;
+	}
+	return true;
+}
+#define arch_validate_prot arch_validate_prot
+
+#endif /* CONFIG_PPC64 */
+#endif	/* _ASM_POWERPC_MMAN_H */
-- 
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