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-rw-r--r--arch/xtensa/include/asm/asm-uaccess.h71
-rw-r--r--arch/xtensa/include/asm/processor.h7
-rw-r--r--arch/xtensa/include/asm/thread_info.h3
-rw-r--r--arch/xtensa/include/asm/uaccess.h16
4 files changed, 0 insertions, 97 deletions
diff --git a/arch/xtensa/include/asm/asm-uaccess.h b/arch/xtensa/include/asm/asm-uaccess.h
index 7f6cf4151843..7cec869136e3 100644
--- a/arch/xtensa/include/asm/asm-uaccess.h
+++ b/arch/xtensa/include/asm/asm-uaccess.h
@@ -24,76 +24,6 @@
#include <asm/processor.h>
/*
- * These assembly macros mirror the C macros in asm/uaccess.h. They
- * should always have identical functionality. See
- * arch/xtensa/kernel/sys.S for usage.
- */
-
-#define KERNEL_DS 0
-#define USER_DS 1
-
-/*
- * get_fs reads current->thread.current_ds into a register.
- * On Entry:
- * <ad> anything
- * <sp> stack
- * On Exit:
- * <ad> contains current->thread.current_ds
- */
- .macro get_fs ad, sp
- GET_CURRENT(\ad,\sp)
-#if THREAD_CURRENT_DS > 1020
- addi \ad, \ad, TASK_THREAD
- l32i \ad, \ad, THREAD_CURRENT_DS - TASK_THREAD
-#else
- l32i \ad, \ad, THREAD_CURRENT_DS
-#endif
- .endm
-
-/*
- * set_fs sets current->thread.current_ds to some value.
- * On Entry:
- * <at> anything (temp register)
- * <av> value to write
- * <sp> stack
- * On Exit:
- * <at> destroyed (actually, current)
- * <av> preserved, value to write
- */
- .macro set_fs at, av, sp
- GET_CURRENT(\at,\sp)
- s32i \av, \at, THREAD_CURRENT_DS
- .endm
-
-/*
- * kernel_ok determines whether we should bypass addr/size checking.
- * See the equivalent C-macro version below for clarity.
- * On success, kernel_ok branches to a label indicated by parameter
- * <success>. This implies that the macro falls through to the next
- * insruction on an error.
- *
- * Note that while this macro can be used independently, we designed
- * in for optimal use in the access_ok macro below (i.e., we fall
- * through on error).
- *
- * On Entry:
- * <at> anything (temp register)
- * <success> label to branch to on success; implies
- * fall-through macro on error
- * <sp> stack pointer
- * On Exit:
- * <at> destroyed (actually, current->thread.current_ds)
- */
-
-#if ((KERNEL_DS != 0) || (USER_DS == 0))
-# error Assembly macro kernel_ok fails
-#endif
- .macro kernel_ok at, sp, success
- get_fs \at, \sp
- beqz \at, \success
- .endm
-
-/*
* user_ok determines whether the access to user-space memory is allowed.
* See the equivalent C-macro version below for clarity.
*
@@ -147,7 +77,6 @@
* <at> destroyed
*/
.macro access_ok aa, as, at, sp, error
- kernel_ok \at, \sp, .Laccess_ok_\@
user_ok \aa, \as, \at, \error
.Laccess_ok_\@:
.endm
diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h
index 37d3e9887fe7..abad7c3df46f 100644
--- a/arch/xtensa/include/asm/processor.h
+++ b/arch/xtensa/include/asm/processor.h
@@ -152,18 +152,12 @@
*/
#define SPILL_SLOT_CALL12(sp, reg) (*(((unsigned long *)(sp)) - 16 + (reg)))
-typedef struct {
- unsigned long seg;
-} mm_segment_t;
-
struct thread_struct {
/* kernel's return address and stack pointer for context switching */
unsigned long ra; /* kernel's a0: return address and window call size */
unsigned long sp; /* kernel's a1: stack pointer */
- mm_segment_t current_ds; /* see uaccess.h for example uses */
-
/* struct xtensa_cpuinfo info; */
unsigned long bad_vaddr; /* last user fault */
@@ -186,7 +180,6 @@ struct thread_struct {
{ \
ra: 0, \
sp: sizeof(init_stack) + (long) &init_stack, \
- current_ds: {0}, \
/*info: {0}, */ \
bad_vaddr: 0, \
bad_uaddr: 0, \
diff --git a/arch/xtensa/include/asm/thread_info.h b/arch/xtensa/include/asm/thread_info.h
index a312333a9add..f6fcbba1d02f 100644
--- a/arch/xtensa/include/asm/thread_info.h
+++ b/arch/xtensa/include/asm/thread_info.h
@@ -52,8 +52,6 @@ struct thread_info {
__u32 cpu; /* current CPU */
__s32 preempt_count; /* 0 => preemptable,< 0 => BUG*/
- mm_segment_t addr_limit; /* thread address space */
-
unsigned long cpenable;
#if XCHAL_HAVE_EXCLUSIVE
/* result of the most recent exclusive store */
@@ -81,7 +79,6 @@ struct thread_info {
.flags = 0, \
.cpu = 0, \
.preempt_count = INIT_PREEMPT_COUNT, \
- .addr_limit = KERNEL_DS, \
}
/* how to get the thread information struct from C */
diff --git a/arch/xtensa/include/asm/uaccess.h b/arch/xtensa/include/asm/uaccess.h
index 0edd9e4b23d0..56aec6d504fe 100644
--- a/arch/xtensa/include/asm/uaccess.h
+++ b/arch/xtensa/include/asm/uaccess.h
@@ -19,22 +19,6 @@
#include <linux/prefetch.h>
#include <asm/types.h>
#include <asm/extable.h>
-
-/*
- * The fs value determines whether argument validity checking should
- * be performed or not. If get_fs() == USER_DS, checking is
- * performed, with get_fs() == KERNEL_DS, checking is bypassed.
- *
- * For historical reasons (Data Segment Register?), these macros are
- * grossly misnamed.
- */
-
-#define KERNEL_DS ((mm_segment_t) { 0 })
-#define USER_DS ((mm_segment_t) { 1 })
-
-#define get_fs() (current->thread.current_ds)
-#define set_fs(val) (current->thread.current_ds = (val))
-
#include <asm-generic/access_ok.h>
/*