7 files changed, 62 insertions, 26 deletions
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index d941abc6b5ee..6ce2c5173482 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -1320,9 +1320,6 @@ int __init populate_sysreg_config(const struct sys_reg_desc *sr,
 				  unsigned int idx);
 int __init populate_nv_trap_config(void);
 
-bool lock_all_vcpus(struct kvm *kvm);
-void unlock_all_vcpus(struct kvm *kvm);
-
 void kvm_calculate_traps(struct kvm_vcpu *vcpu);
 
 /* MMIO helpers */
diff --git a/arch/arm64/include/asm/pgtable-types.h b/arch/arm64/include/asm/pgtable-types.h
index 6d6d4065b0cb..265e8301d7ba 100644
--- a/arch/arm64/include/asm/pgtable-types.h
+++ b/arch/arm64/include/asm/pgtable-types.h
@@ -11,11 +11,19 @@
 
 #include <asm/types.h>
 
-typedef u64 pteval_t;
-typedef u64 pmdval_t;
-typedef u64 pudval_t;
-typedef u64 p4dval_t;
-typedef u64 pgdval_t;
+/*
+ * Page Table Descriptor
+ *
+ * Generic page table descriptor format from which
+ * all level specific descriptors can be derived.
+ */
+typedef u64 ptdesc_t;
+
+typedef ptdesc_t pteval_t;
+typedef ptdesc_t pmdval_t;
+typedef ptdesc_t pudval_t;
+typedef ptdesc_t p4dval_t;
+typedef ptdesc_t pgdval_t;
 
 /*
  * These are used to make use of C type-checking..
@@ -46,7 +54,7 @@ typedef struct { pgdval_t pgd; } pgd_t;
 #define pgd_val(x)	((x).pgd)
 #define __pgd(x)	((pgd_t) { (x) } )
 
-typedef struct { pteval_t pgprot; } pgprot_t;
+typedef struct { ptdesc_t pgprot; } pgprot_t;
 #define pgprot_val(x)	((x).pgprot)
 #define __pgprot(x)	((pgprot_t) { (x) } )
 
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 5285757ee0c1..88db8a0c0b37 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -673,7 +673,6 @@ static inline pmd_t pmd_mkspecial(pmd_t pmd)
 #define __phys_to_pmd_val(phys)	__phys_to_pte_val(phys)
 #define pmd_pfn(pmd)		((__pmd_to_phys(pmd) & PMD_MASK) >> PAGE_SHIFT)
 #define pfn_pmd(pfn,prot)	__pmd(__phys_to_pmd_val((phys_addr_t)(pfn) << PAGE_SHIFT) | pgprot_val(prot))
-#define mk_pmd(page,prot)	pfn_pmd(page_to_pfn(page),prot)
 
 #define pud_young(pud)		pte_young(pud_pte(pud))
 #define pud_mkyoung(pud)	pte_pud(pte_mkyoung(pud_pte(pud)))
@@ -906,12 +905,6 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd)
 /* use ONLY for statically allocated translation tables */
 #define pte_offset_kimg(dir,addr)	((pte_t *)__phys_to_kimg(pte_offset_phys((dir), (addr))))
 
-/*
- * Conversion functions: convert a page and protection to a page entry,
- * and a page entry and page directory to the page they refer to.
- */
-#define mk_pte(page,prot)	pfn_pte(page_to_pfn(page),prot)
-
 #if CONFIG_PGTABLE_LEVELS > 2
 
 #define pmd_ERROR(e)	\
diff --git a/arch/arm64/include/asm/ptdump.h b/arch/arm64/include/asm/ptdump.h
index b2931d1ae0fb..fded5358641f 100644
--- a/arch/arm64/include/asm/ptdump.h
+++ b/arch/arm64/include/asm/ptdump.h
@@ -24,8 +24,8 @@ struct ptdump_info {
 };
 
 struct ptdump_prot_bits {
-	u64		mask;
-	u64		val;
+	ptdesc_t	mask;
+	ptdesc_t	val;
 	const char	*set;
 	const char	*clear;
 };
@@ -34,7 +34,7 @@ struct ptdump_pg_level {
 	const struct ptdump_prot_bits *bits;
 	char name[4];
 	int num;
-	u64 mask;
+	ptdesc_t mask;
 };
 
 /*
@@ -51,7 +51,7 @@ struct ptdump_pg_state {
 	const struct mm_struct *mm;
 	unsigned long start_address;
 	int level;
-	u64 current_prot;
+	ptdesc_t current_prot;
 	bool check_wx;
 	unsigned long wx_pages;
 	unsigned long uxn_pages;
@@ -59,7 +59,13 @@ struct ptdump_pg_state {
 
 void ptdump_walk(struct seq_file *s, struct ptdump_info *info);
 void note_page(struct ptdump_state *pt_st, unsigned long addr, int level,
-	       u64 val);
+	       pteval_t val);
+void note_page_pte(struct ptdump_state *st, unsigned long addr, pte_t pte);
+void note_page_pmd(struct ptdump_state *st, unsigned long addr, pmd_t pmd);
+void note_page_pud(struct ptdump_state *st, unsigned long addr, pud_t pud);
+void note_page_p4d(struct ptdump_state *st, unsigned long addr, p4d_t p4d);
+void note_page_pgd(struct ptdump_state *st, unsigned long addr, pgd_t pgd);
+void note_page_flush(struct ptdump_state *st);
 #ifdef CONFIG_PTDUMP_DEBUGFS
 #define EFI_RUNTIME_MAP_END	DEFAULT_MAP_WINDOW_64
 void __init ptdump_debugfs_register(struct ptdump_info *info, const char *name);
@@ -69,7 +75,13 @@ static inline void ptdump_debugfs_register(struct ptdump_info *info,
 #endif /* CONFIG_PTDUMP_DEBUGFS */
 #else
 static inline void note_page(struct ptdump_state *pt_st, unsigned long addr,
-			     int level, u64 val) { }
+			     int level, pteval_t val) { }
+static inline void note_page_pte(struct ptdump_state *st, unsigned long addr, pte_t pte) { }
+static inline void note_page_pmd(struct ptdump_state *st, unsigned long addr, pmd_t pmd) { }
+static inline void note_page_pud(struct ptdump_state *st, unsigned long addr, pud_t pud) { }
+static inline void note_page_p4d(struct ptdump_state *st, unsigned long addr, p4d_t p4d) { }
+static inline void note_page_pgd(struct ptdump_state *st, unsigned long addr, pgd_t pgd) { }
+static inline void note_page_flush(struct ptdump_state *st) { }
 #endif /* CONFIG_PTDUMP */
 
 #endif /* __ASM_PTDUMP_H */
diff --git a/arch/arm64/include/asm/rwonce.h b/arch/arm64/include/asm/rwonce.h
index 56f7b1d4d54b..97d9256d33c9 100644
--- a/arch/arm64/include/asm/rwonce.h
+++ b/arch/arm64/include/asm/rwonce.h
@@ -12,16 +12,12 @@
 
 #ifndef BUILD_VDSO
 
-#ifdef CONFIG_AS_HAS_LDAPR
 #define __LOAD_RCPC(sfx, regs...)					\
 	ALTERNATIVE(							\
 		"ldar"	#sfx "\t" #regs,				\
 		".arch_extension rcpc\n"				\
 		"ldapr"	#sfx "\t" #regs,				\
 	ARM64_HAS_LDAPR)
-#else
-#define __LOAD_RCPC(sfx, regs...)	"ldar" #sfx "\t" #regs
-#endif /* CONFIG_AS_HAS_LDAPR */
 
 /*
  * When building with LTO, there is an increased risk of the compiler
diff --git a/arch/arm64/include/asm/syscall.h b/arch/arm64/include/asm/syscall.h
index ab8e14b96f68..712daa90e643 100644
--- a/arch/arm64/include/asm/syscall.h
+++ b/arch/arm64/include/asm/syscall.h
@@ -61,6 +61,22 @@ static inline void syscall_set_return_value(struct task_struct *task,
 	regs->regs[0] = val;
 }
 
+static inline void syscall_set_nr(struct task_struct *task,
+				  struct pt_regs *regs,
+				  int nr)
+{
+	regs->syscallno = nr;
+	if (nr == -1) {
+		/*
+		 * When the syscall number is set to -1, the syscall will be
+		 * skipped.  In this case the syscall return value has to be
+		 * set explicitly, otherwise the first syscall argument is
+		 * returned as the syscall return value.
+		 */
+		syscall_set_return_value(task, regs, -ENOSYS, 0);
+	}
+}
+
 #define SYSCALL_MAX_ARGS 6
 
 static inline void syscall_get_arguments(struct task_struct *task,
@@ -73,6 +89,19 @@ static inline void syscall_get_arguments(struct task_struct *task,
 	memcpy(args, &regs->regs[1], 5 * sizeof(args[0]));
 }
 
+static inline void syscall_set_arguments(struct task_struct *task,
+					 struct pt_regs *regs,
+					 const unsigned long *args)
+{
+	memcpy(&regs->regs[0], args, 6 * sizeof(args[0]));
+	/*
+	 * Also copy the first argument into orig_x0
+	 * so that syscall_get_arguments() would return it
+	 * instead of the previous value.
+	 */
+	regs->orig_x0 = regs->regs[0];
+}
+
 /*
  * We don't care about endianness (__AUDIT_ARCH_LE bit) here because
  * AArch64 has the same system calls both on little- and big- endian.
diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
index cd853801a8f7..f1bb0d10c39a 100644
--- a/arch/arm64/include/asm/sysreg.h
+++ b/arch/arm64/include/asm/sysreg.h
@@ -12,6 +12,7 @@
 #include <linux/bits.h>
 #include <linux/stringify.h>
 #include <linux/kasan-tags.h>
+#include <linux/kconfig.h>
 
 #include <asm/gpr-num.h>