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[PATCH] x86-64: Use safe_apic_wait_icr_idle in __send_IPI_dest_field - x86_64
Use safe_apic_wait_icr_idle to check ICR idle bit if the vector is NMI_VECTOR to avoid potential hangups in the event of crash when kdump tries to stop the other CPUs. Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp> Signed-off-by: Andi Kleen <ak@suse.de>
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1 changed files with 4 additions and 1 deletions
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@ -85,7 +85,10 @@ static inline void __send_IPI_dest_field(unsigned int mask, int vector, unsigned
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/*
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/*
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* Wait for idle.
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* Wait for idle.
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*/
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*/
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apic_wait_icr_idle();
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if (unlikely(vector == NMI_VECTOR))
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safe_apic_wait_icr_idle();
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else
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apic_wait_icr_idle();
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/*
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/*
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* prepare target chip field
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* prepare target chip field
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