Merge Linux 4.4.203-rc2 into 10

[sagit-ice-cold/kernel_xiaomi_msm8998.git] / arch / arm64 / lib / clear_user.S

diff --git a/arch/arm64/lib/clear_user.S b/arch/arm64/lib/clear_user.S
index 8d330c3..0f5cc2a 100644 (file)
--- a/arch/arm64/lib/clear_user.S
+++ b/arch/arm64/lib/clear_user.S
@@ -17,10 +17,7 @@
  */
 #include <linux/linkage.h>
 
-#include <asm/alternative.h>
-#include <asm/assembler.h>
-#include <asm/cpufeature.h>
-#include <asm/sysreg.h>
+#include <asm/uaccess.h>
 
        .text
 
@@ -33,29 +30,27 @@
  * Alignment fixed up by hardware.
  */
 ENTRY(__clear_user)
-ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(0)), ARM64_HAS_PAN, \
-           CONFIG_ARM64_PAN)
+       uaccess_enable_not_uao x2, x3, x4
        mov     x2, x1                  // save the size for fixup return
        subs    x1, x1, #8
        b.mi    2f
 1:
-USER(9f, str   xzr, [x0], #8   )
+uao_user_alternative 9f, str, sttr, xzr, x0, 8
        subs    x1, x1, #8
        b.pl    1b
 2:     adds    x1, x1, #4
        b.mi    3f
-USER(9f, str   wzr, [x0], #4   )
+uao_user_alternative 9f, str, sttr, wzr, x0, 4
        sub     x1, x1, #4
 3:     adds    x1, x1, #2
        b.mi    4f
-USER(9f, strh  wzr, [x0], #2   )
+uao_user_alternative 9f, strh, sttrh, wzr, x0, 2
        sub     x1, x1, #2
 4:     adds    x1, x1, #1
        b.mi    5f
-USER(9f, strb  wzr, [x0]       )
+uao_user_alternative 9f, strb, sttrb, wzr, x0, 0
 5:     mov     x0, #0
-ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(1)), ARM64_HAS_PAN, \
-           CONFIG_ARM64_PAN)
+       uaccess_disable_not_uao x2, x3
        ret
 ENDPROC(__clear_user)