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powerpc/fsl_booke: ensure SPEFloatingPointException() reenables interrupts 

SPEFloatingPointException() is the only exception handler which 'forgets' to
re-enable interrupts. This patch makes sure it does.

Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christophe Leroy 2019-04-30 12:38:57 +00:00 committed by Michael Ellerman
parent 90f204b9a1
commit ef4291243f
1 changed files with 8 additions and 0 deletions
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8
arch/powerpc/kernel/traps.c
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@ -2088,6 +2088,10 @@ void SPEFloatingPointException(struct pt_regs *regs)
int code = FPE_FLTUNK;
int err;
/* We restore the interrupt state now */
if (!arch_irq_disabled_regs(regs))
local_irq_enable();
flush_spe_to_thread(current);
spefscr = current->thread.spefscr;
@ -2133,6 +2137,10 @@ void SPEFloatingPointRoundException(struct pt_regs *regs)
extern int speround_handler(struct pt_regs *regs);
int err;
/* We restore the interrupt state now */
if (!arch_irq_disabled_regs(regs))
local_irq_enable();
preempt_disable();
if (regs->msr & MSR_SPE)
giveup_spe(current);