Free up the IPI slot used by IPI_STOP_HARD.
Change the numeric value of IPI_STOP_HARD so it doesn't occupy a valid IPI slot. This can be done because IPI_STOP_HARD is actually delivered via NMI. Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D1983
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=279468
@ -126,7 +126,12 @@
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#define IPI_STOP (APIC_IPI_INTS + 7) /* Stop CPU until restarted. */
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#define IPI_SUSPEND (APIC_IPI_INTS + 8) /* Suspend CPU until restarted. */
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#define IPI_STOP_HARD (APIC_IPI_INTS + 9) /* Stop CPU with a NMI. */
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/*
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* IPI_STOP_HARD does not need to occupy a slot in the IPI vector space since
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* it is delivered using an NMI anyways.
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*/
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#define IPI_STOP_HARD 255 /* Stop CPU with a NMI. */
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/*
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* The spurious interrupt can share the priority class with the IPIs since
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