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On Sun, Oct 23, 2005 at 07:19:32PM -0700, Paul E. McKenney wrote: > My guess is that this read-side critical section can be invoked from and > SMI, and that SMIs can occur even if interrupts are disabled. If my guess > is wrong, please enlighten me. And feel free to ignore the next few > paragraphs in that case, along with a number of my suggested changes, > since they all depend critically on my guess being correct. Paul, it took me a bit to figure this out too, but Corey uses the TLA "SMI" to mean "Systems Management Interface", not "Systems Management Interrupt". From Documentation/IPMI.txt: ipmi_msghandler - This is the central piece of software for the IPMI system. It handles all messages, message timing, and responses. The IPMI users tie into this, and the IPMI physical interfaces (called System Management Interfaces, or SMIs) also tie in here. There are at least 4 basic types of physical hardware interfaces (BT, SMIC, KCS, and I2C), which may (or more often, may not) have their own hardware interrupt lines, but these are normal interrupts, not CPU-magic "systems management interrupts". So I think this isn't a problem. Thanks, Matt -- Matt Domsch Software Architect Dell Linux Solutions linux.dell.com & www.dell.com/linux Linux on Dell mailing lists @ http://lists.us.dell.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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