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-rw-r--r--arch/microblaze/kernel/entry.S15
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/microblaze/kernel/entry.S b/arch/microblaze/kernel/entry.S
index 5318ad375fec..5529f64e97e8 100644
--- a/arch/microblaze/kernel/entry.S
+++ b/arch/microblaze/kernel/entry.S
@@ -91,6 +91,11 @@
91 nop 91 nop
92 .endm 92 .endm
93 93
94 .macro clear_ums
95 msrclr r11, MSR_UMS
96 nop
97 .endm
98
94 .macro clear_vms_ums 99 .macro clear_vms_ums
95 msrclr r11, MSR_VMS | MSR_UMS 100 msrclr r11, MSR_VMS | MSR_UMS
96 nop 101 nop
@@ -162,6 +167,14 @@
162 nop 167 nop
163 .endm 168 .endm
164 169
170 .macro clear_ums
171 mfs r11, rmsr
172 nop
173 andni r11, r11, MSR_UMS
174 mts rmsr,r11
175 nop
176 .endm
177
165 .macro clear_vms_ums 178 .macro clear_vms_ums
166 mfs r11, rmsr 179 mfs r11, rmsr
167 nop 180 nop
@@ -526,6 +539,8 @@ C_ENTRY(sys_rt_sigreturn_wrapper):
526 swi r0, r1, PTO + PT_MODE; /* Was in user-mode. */ \ 539 swi r0, r1, PTO + PT_MODE; /* Was in user-mode. */ \
527 lwi r11, r0, TOPHYS(PER_CPU(ENTRY_SP)); \ 540 lwi r11, r0, TOPHYS(PER_CPU(ENTRY_SP)); \
528 swi r11, r1, PTO+PT_R1; /* Store user SP. */ \ 541 swi r11, r1, PTO+PT_R1; /* Store user SP. */ \
542 /* MS: I am clearing UMS even in case when I come from kernel space */ \
543 clear_ums; \
5292: lwi CURRENT_TASK, r0, TOPHYS(PER_CPU(CURRENT_SAVE)); 5442: lwi CURRENT_TASK, r0, TOPHYS(PER_CPU(CURRENT_SAVE));
530 545
531C_ENTRY(full_exception_trap): 546C_ENTRY(full_exception_trap):