powerpc: Remove redundant clear of MSR_VSX in __giveup_vsx()
__giveup_fpu() already does it and we cannot have MSR_VSX set without having MSR_FP also set. This also adds a warning to check we indeed do Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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@ -331,11 +331,19 @@ static inline int restore_altivec(struct task_struct *tsk) { return 0; }
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#ifdef CONFIG_VSX
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static void __giveup_vsx(struct task_struct *tsk)
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{
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if (tsk->thread.regs->msr & MSR_FP)
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unsigned long msr = tsk->thread.regs->msr;
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/*
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* We should never be ssetting MSR_VSX without also setting
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* MSR_FP and MSR_VEC
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*/
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WARN_ON((msr & MSR_VSX) && !((msr & MSR_FP) && (msr & MSR_VEC)));
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/* __giveup_fpu will clear MSR_VSX */
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if (msr & MSR_FP)
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__giveup_fpu(tsk);
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if (tsk->thread.regs->msr & MSR_VEC)
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if (msr & MSR_VEC)
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__giveup_altivec(tsk);
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tsk->thread.regs->msr &= ~MSR_VSX;
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}
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static void giveup_vsx(struct task_struct *tsk)
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