forked from Minki/linux
microblaze: Fix _user_exception function
Saving some instructions. Clear VMS bit if kernel comes from kernel space. Signed-off-by: Michal Simek <monstr@monstr.eu>
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@ -352,6 +352,7 @@ C_ENTRY(_user_exception):
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swi r0, r1, PTO + PT_MODE; /* Was in user-mode. */
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lwi r11, r0, TOPHYS(PER_CPU(ENTRY_SP));
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swi r11, r1, PTO+PT_R1; /* Store user SP. */
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clear_ums;
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2: lwi CURRENT_TASK, r0, TOPHYS(PER_CPU(CURRENT_SAVE));
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/* Save away the syscall number. */
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swi r12, r1, PTO+PT_R0;
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@ -363,10 +364,8 @@ C_ENTRY(_user_exception):
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* register should point to the location where
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* the called function should return. [note that MAKE_SYS_CALL uses label 1] */
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# Step into virtual mode.
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set_vms;
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addik r11, r0, 3f
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rtid r11, 0
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/* Step into virtual mode */
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rtbd r0, 3f
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nop
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3:
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lwi r11, CURRENT_TASK, TS_THREAD_INFO /* get thread info */
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