Date: Thu, 13 Jan 2011 17:00:22 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/amd64/amd64 apic_vector.S src/sys/i386/i386 apic_vector.s src/sys/x86/x86 local_apic.c Message-ID: <201101131700.p0DH0iKc018942@repoman.freebsd.org>
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jhb 2011-01-13 17:00:22 UTC FreeBSD src repository Modified files: sys/amd64/amd64 apic_vector.S sys/i386/i386 apic_vector.s sys/x86/x86 local_apic.c Log: SVN rev 217360 on 2011-01-13 17:00:22Z by jhb If an interrupt on an I/O APIC is moved to a different CPU after it has started to execute, it seems that the corresponding ISR bit in the "old" local APIC can be cleared. This causes the local APIC interrupt routine to fail to find an interrupt to service. Rather than panic'ing in this case, simply return from the interrupt without sending an EOI to the local APIC. If there are any other pending interrupts in other ISR registers, the local APIC will assert a new interrupt. Tested by: steve Revision Changes Path 1.119 +4 -6 src/sys/amd64/amd64/apic_vector.S 1.119 +4 -6 src/sys/i386/i386/apic_vector.s 1.19 +0 -2 src/sys/x86/x86/local_apic.c
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