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Diffstat (limited to 'arch/arm64/include/asm/processor.h')
-rw-r--r--arch/arm64/include/asm/processor.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h
index 023cacb946c3..fce604e3e599 100644
--- a/arch/arm64/include/asm/processor.h
+++ b/arch/arm64/include/asm/processor.h
@@ -21,6 +21,9 @@
#define TASK_SIZE_64 (UL(1) << VA_BITS)
+#define KERNEL_DS UL(-1)
+#define USER_DS (TASK_SIZE_64 - 1)
+
#ifndef __ASSEMBLY__
/*
@@ -113,6 +116,16 @@ struct thread_struct {
struct debug_info debug; /* debugging */
};
+/*
+ * Everything usercopied to/from thread_struct is statically-sized, so
+ * no hardened usercopy whitelist is needed.
+ */
+static inline void arch_thread_struct_whitelist(unsigned long *offset,
+ unsigned long *size)
+{
+ *offset = *size = 0;
+}
+
#ifdef CONFIG_COMPAT
#define task_user_tls(t) \
({ \
@@ -216,6 +229,7 @@ static inline void spin_lock_prefetch(const void *ptr)
int cpu_enable_pan(void *__unused);
int cpu_enable_cache_maint_trap(void *__unused);
+int cpu_clear_disr(void *__unused);
/* Userspace interface for PR_SVE_{SET,GET}_VL prctl()s: */
#define SVE_SET_VL(arg) sve_set_current_vl(arg)