Adding upstream version 5.10.209.upstream/5.10.209

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 55 insertions, 0 deletions

diff --git a/arch/powerpc/include/asm/mman.h b/arch/powerpc/include/asm/mman.h
new file mode 100644
index 000000000..7cb6d18f5
--- /dev/null
+++ b/arch/powerpc/include/asm/mman.h
@@ -0,0 +1,55 @@
+/* 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>
+
+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 pgprot_t arch_vm_get_page_prot(unsigned long vm_flags)
+{
+#ifdef CONFIG_PPC_MEM_KEYS
+	return (vm_flags & VM_SAO) ?
+		__pgprot(_PAGE_SAO | vmflag_to_pte_pkey_bits(vm_flags)) :
+		__pgprot(0 | vmflag_to_pte_pkey_bits(vm_flags));
+#else
+	return (vm_flags & VM_SAO) ? __pgprot(_PAGE_SAO) : __pgprot(0);
+#endif
+}
+#define arch_vm_get_page_prot(vm_flags) arch_vm_get_page_prot(vm_flags)
+
+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 */