forked from Minki/linux
microblaze: Fix _interrupt function
Save instructions by using delay slot and clear UMS only if kernel comes from user space. Signed-off-by: Michal Simek <monstr@monstr.eu>
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@ -747,15 +747,13 @@ C_ENTRY(_interrupt):
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swi r0, r1, PTO + PT_MODE;
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lwi r11, r0, TOPHYS(PER_CPU(ENTRY_SP));
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swi r11, r1, PTO+PT_R1;
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clear_ums;
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2:
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lwi CURRENT_TASK, r0, TOPHYS(PER_CPU(CURRENT_SAVE));
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tovirt(r1,r1)
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addik r5, r1, PTO;
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set_vms;
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addik r11, r0, do_IRQ;
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addik r15, r0, irq_call;
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irq_call:rtbd r11, 0;
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nop;
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irq_call:rtbd r0, do_IRQ;
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addik r5, r1, PTO;
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/* MS: we are in virtual mode */
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ret_from_irq:
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