Date: Fri, 22 Mar 2002 20:20:01 -0800 (PST) From: Jake Burkholder <jake@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/sparc64/include tlb.h Message-ID: <200203230420.g2N4K1C40817@freefall.freebsd.org>
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jake 2002/03/22 20:20:00 PST Modified files: sys/sparc64/include tlb.h Log: Fix a deadlock condition with tlb shootdown ipi delivery. Since ipis are not blocked by raising the pil, a reciever may be interrupted while holding a spinlock. If the sender does not defer interrupts throughout the entire operation it may be interrupted and try to acquire a spinlock held by a reciever, leading to a deadlock due to the synchronization used by the ipi handlers themselves. Submitted by: tmm Revision Changes Path 1.15 +17 -0 src/sys/sparc64/include/tlb.h To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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