Date: Wed, 23 Apr 1997 20:35:05 -0700 (PDT) From: Steve Passe <fsmp@FreeBSD.org> To: freebsd-smp@FreeBSD.org Subject: cvs commit: sys/i386/i386 mp_machdep.c sys/i386/include smptests.h sys/i386/isa vector.s Message-ID: <199704240335.UAA12478@freefall.freebsd.org>
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fsmp 97/04/23 20:35:05
Modified: i386/i386 mp_machdep.c
i386/include smptests.h
i386/isa vector.s
Log:
A bolder attempt to cure the apicIPI / SMP_INVLTLB deadlock:
Xfastipi32, new inline function in vector.s
Xfastipi32 is registered directly via setidt() at vector ICU+32, ie.
in a APIC bucket of higher priority than the other INTs. This means
that apicIPI shouldn't block for lack of buffer space. Note that for
the first cut register_intr(), etc. are skipped. This can be restored later
once the concept is proven. Because of the masking etc. that breaks when
we go beyond the 32nd bit position I skipped that for now...
Xfastipi32 DOES NOT get the mplock, it flushes the TLB, EOIs the APIC, irets.
If anyone sees a potenrtial problem here please speak up.
To enable uncomment "#define XFAST_IPI32" in i386/include/smptests.h.
Revision Changes Path
1.41 +18 -1 sys/i386/i386/mp_machdep.c
1.10 +7 -1 sys/i386/include/smptests.h
1.40 +25 -0 sys/i386/isa/vector.s
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