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| author | neel <neel@FreeBSD.org> | 2015-03-01 02:31:27 +0000 |
|---|---|---|
| committer | neel <neel@FreeBSD.org> | 2015-03-01 02:31:27 +0000 |
| commit | 3ae7b75a649ad4e5651c38025f2ead98925745a6 (patch) | |
| tree | 4e8f6de885006304f23e00d0f9b777a1bbce0129 /sys/x86/include/apicvar.h | |
| parent | b7fc2d31bd98e3cc6900df64e835508d36c05b81 (diff) | |
| download | FreeBSD-src-3ae7b75a649ad4e5651c38025f2ead98925745a6.zip FreeBSD-src-3ae7b75a649ad4e5651c38025f2ead98925745a6.tar.gz | |
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
Diffstat (limited to 'sys/x86/include/apicvar.h')
| -rw-r--r-- | sys/x86/include/apicvar.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/x86/include/apicvar.h b/sys/x86/include/apicvar.h index 22fe1f3..048b646 100644 --- a/sys/x86/include/apicvar.h +++ b/sys/x86/include/apicvar.h @@ -126,7 +126,12 @@ #define IPI_STOP (APIC_IPI_INTS + 7) /* Stop CPU until restarted. */ #define IPI_SUSPEND (APIC_IPI_INTS + 8) /* Suspend CPU until restarted. */ -#define IPI_STOP_HARD (APIC_IPI_INTS + 9) /* Stop CPU with a NMI. */ + +/* + * IPI_STOP_HARD does not need to occupy a slot in the IPI vector space since + * it is delivered using an NMI anyways. + */ +#define IPI_STOP_HARD 255 /* Stop CPU with a NMI. */ /* * The spurious interrupt can share the priority class with the IPIs since |
