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-rw-r--r--arch/arm/include/asm/assembler.h6
-rw-r--r--arch/arm/include/asm/dma-iommu.h2
-rw-r--r--arch/arm/include/asm/dma-mapping.h2
-rw-r--r--arch/arm/include/asm/futex.h4
-rw-r--r--arch/arm/include/asm/hardware/sa1111.h4
-rw-r--r--arch/arm/include/asm/module.h11
-rw-r--r--arch/arm/include/asm/pgalloc.h4
-rw-r--r--arch/arm/include/asm/stackprotector.h12
-rw-r--r--arch/arm/include/asm/thread_info.h3
-rw-r--r--arch/arm/include/asm/uaccess.h22
10 files changed, 53 insertions, 17 deletions
diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h
index 88286dd483ff..28a48e0d4cca 100644
--- a/arch/arm/include/asm/assembler.h
+++ b/arch/arm/include/asm/assembler.h
@@ -243,13 +243,15 @@
.endm
#endif
-#define USER(x...) \
+#define USERL(l, x...) \
9999: x; \
.pushsection __ex_table,"a"; \
.align 3; \
- .long 9999b,9001f; \
+ .long 9999b,l; \
.popsection
+#define USER(x...) USERL(9001f, x)
+
#ifdef CONFIG_SMP
#define ALT_SMP(instr...) \
9998: instr
diff --git a/arch/arm/include/asm/dma-iommu.h b/arch/arm/include/asm/dma-iommu.h
index 6821f1249300..772f48ef84b7 100644
--- a/arch/arm/include/asm/dma-iommu.h
+++ b/arch/arm/include/asm/dma-iommu.h
@@ -9,8 +9,6 @@
#include <linux/dma-debug.h>
#include <linux/kref.h>
-#define ARM_MAPPING_ERROR (~(dma_addr_t)0x0)
-
struct dma_iommu_mapping {
/* iommu specific data */
struct iommu_domain *domain;
diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index 965b7c846ecb..31d3b96f0f4b 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -18,7 +18,7 @@ extern const struct dma_map_ops arm_coherent_dma_ops;
static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
{
- return IS_ENABLED(CONFIG_MMU) ? &arm_dma_ops : &dma_direct_ops;
+ return IS_ENABLED(CONFIG_MMU) ? &arm_dma_ops : NULL;
}
#ifdef __arch_page_to_dma
diff --git a/arch/arm/include/asm/futex.h b/arch/arm/include/asm/futex.h
index ffebe7b7a5b7..0a46676b4245 100644
--- a/arch/arm/include/asm/futex.h
+++ b/arch/arm/include/asm/futex.h
@@ -50,7 +50,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
int ret;
u32 val;
- if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
+ if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
smp_mb();
@@ -104,7 +104,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
int ret = 0;
u32 val;
- if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
+ if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
preempt_disable();
diff --git a/arch/arm/include/asm/hardware/sa1111.h b/arch/arm/include/asm/hardware/sa1111.h
index 798e520e8a49..d134b9a5ff94 100644
--- a/arch/arm/include/asm/hardware/sa1111.h
+++ b/arch/arm/include/asm/hardware/sa1111.h
@@ -433,10 +433,6 @@ int sa1111_check_dma_bug(dma_addr_t addr);
int sa1111_driver_register(struct sa1111_driver *);
void sa1111_driver_unregister(struct sa1111_driver *);
-void sa1111_set_io_dir(struct sa1111_dev *sadev, unsigned int bits, unsigned int dir, unsigned int sleep_dir);
-void sa1111_set_io(struct sa1111_dev *sadev, unsigned int bits, unsigned int v);
-void sa1111_set_sleep_io(struct sa1111_dev *sadev, unsigned int bits, unsigned int v);
-
struct sa1111_platform_data {
int irq_base; /* base for cascaded on-chip IRQs */
unsigned disable_devs;
diff --git a/arch/arm/include/asm/module.h b/arch/arm/include/asm/module.h
index 9e81b7c498d8..182163b55546 100644
--- a/arch/arm/include/asm/module.h
+++ b/arch/arm/include/asm/module.h
@@ -61,4 +61,15 @@ u32 get_module_plt(struct module *mod, unsigned long loc, Elf32_Addr val);
MODULE_ARCH_VERMAGIC_ARMTHUMB \
MODULE_ARCH_VERMAGIC_P2V
+#ifdef CONFIG_THUMB2_KERNEL
+#define HAVE_ARCH_KALLSYMS_SYMBOL_VALUE
+static inline unsigned long kallsyms_symbol_value(const Elf_Sym *sym)
+{
+ if (ELF_ST_TYPE(sym->st_info) == STT_FUNC)
+ return sym->st_value & ~1;
+
+ return sym->st_value;
+}
+#endif
+
#endif /* _ASM_ARM_MODULE_H */
diff --git a/arch/arm/include/asm/pgalloc.h b/arch/arm/include/asm/pgalloc.h
index 2d7344f0e208..17ab72f0cc4e 100644
--- a/arch/arm/include/asm/pgalloc.h
+++ b/arch/arm/include/asm/pgalloc.h
@@ -81,7 +81,7 @@ static inline void clean_pte_table(pte_t *pte)
* +------------+
*/
static inline pte_t *
-pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr)
+pte_alloc_one_kernel(struct mm_struct *mm)
{
pte_t *pte;
@@ -93,7 +93,7 @@ pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr)
}
static inline pgtable_t
-pte_alloc_one(struct mm_struct *mm, unsigned long addr)
+pte_alloc_one(struct mm_struct *mm)
{
struct page *pte;
diff --git a/arch/arm/include/asm/stackprotector.h b/arch/arm/include/asm/stackprotector.h
index ef5f7b69443e..72a20c3a0a90 100644
--- a/arch/arm/include/asm/stackprotector.h
+++ b/arch/arm/include/asm/stackprotector.h
@@ -6,8 +6,10 @@
* the stack frame and verifying that it hasn't been overwritten when
* returning from the function. The pattern is called stack canary
* and gcc expects it to be defined by a global variable called
- * "__stack_chk_guard" on ARM. This unfortunately means that on SMP
- * we cannot have a different canary value per task.
+ * "__stack_chk_guard" on ARM. This prevents SMP systems from using a
+ * different value for each task unless we enable a GCC plugin that
+ * replaces these symbol references with references to each task's own
+ * value.
*/
#ifndef _ASM_STACKPROTECTOR_H
@@ -16,6 +18,8 @@
#include <linux/random.h>
#include <linux/version.h>
+#include <asm/thread_info.h>
+
extern unsigned long __stack_chk_guard;
/*
@@ -33,7 +37,11 @@ static __always_inline void boot_init_stack_canary(void)
canary ^= LINUX_VERSION_CODE;
current->stack_canary = canary;
+#ifndef CONFIG_STACKPROTECTOR_PER_TASK
__stack_chk_guard = current->stack_canary;
+#else
+ current_thread_info()->stack_canary = current->stack_canary;
+#endif
}
#endif /* _ASM_STACKPROTECTOR_H */
diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h
index 8f55dc520a3e..286eb61c632b 100644
--- a/arch/arm/include/asm/thread_info.h
+++ b/arch/arm/include/asm/thread_info.h
@@ -53,6 +53,9 @@ struct thread_info {
struct task_struct *task; /* main task structure */
__u32 cpu; /* cpu */
__u32 cpu_domain; /* cpu domain */
+#ifdef CONFIG_STACKPROTECTOR_PER_TASK
+ unsigned long stack_canary;
+#endif
struct cpu_context_save cpu_context; /* cpu context */
__u32 syscall; /* syscall number */
__u8 used_cp[16]; /* thread used copro */
diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h
index c136eef8f690..42aa4a22803c 100644
--- a/arch/arm/include/asm/uaccess.h
+++ b/arch/arm/include/asm/uaccess.h
@@ -279,7 +279,7 @@ static inline void set_fs(mm_segment_t fs)
#endif /* CONFIG_MMU */
-#define access_ok(type, addr, size) (__range_ok(addr, size) == 0)
+#define access_ok(addr, size) (__range_ok(addr, size) == 0)
#define user_addr_max() \
(uaccess_kernel() ? ~0UL : get_fs())
@@ -349,6 +349,13 @@ do { \
#define __get_user_asm_byte(x, addr, err) \
__get_user_asm(x, addr, err, ldrb)
+#if __LINUX_ARM_ARCH__ >= 6
+
+#define __get_user_asm_half(x, addr, err) \
+ __get_user_asm(x, addr, err, ldrh)
+
+#else
+
#ifndef __ARMEB__
#define __get_user_asm_half(x, __gu_addr, err) \
({ \
@@ -367,6 +374,8 @@ do { \
})
#endif
+#endif /* __LINUX_ARM_ARCH__ >= 6 */
+
#define __get_user_asm_word(x, addr, err) \
__get_user_asm(x, addr, err, ldr)
#endif
@@ -442,6 +451,13 @@ do { \
#define __put_user_asm_byte(x, __pu_addr, err) \
__put_user_asm(x, __pu_addr, err, strb)
+#if __LINUX_ARM_ARCH__ >= 6
+
+#define __put_user_asm_half(x, __pu_addr, err) \
+ __put_user_asm(x, __pu_addr, err, strh)
+
+#else
+
#ifndef __ARMEB__
#define __put_user_asm_half(x, __pu_addr, err) \
({ \
@@ -458,6 +474,8 @@ do { \
})
#endif
+#endif /* __LINUX_ARM_ARCH__ >= 6 */
+
#define __put_user_asm_word(x, __pu_addr, err) \
__put_user_asm(x, __pu_addr, err, str)
@@ -560,7 +578,7 @@ raw_copy_to_user(void __user *to, const void *from, unsigned long n)
static inline unsigned long __must_check clear_user(void __user *to, unsigned long n)
{
- if (access_ok(VERIFY_WRITE, to, n))
+ if (access_ok(to, n))
n = __clear_user(to, n);
return n;
}
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