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authorMark Kettenis <kettenis@cvs.openbsd.org>2014-02-10 20:30:06 +0000
committerMark Kettenis <kettenis@cvs.openbsd.org>2014-02-10 20:30:06 +0000
commitac165f3c3b3b5ba36058c9e163a0a05dec3b7009 (patch)
treeb53f26b517ac8aaffe965dfe004216302fc2b98f /sys/dev/ic/aacreg.h
parent70c86f942e61319d39c1b4de9d530af6646dc7f3 (diff)
To prevent lock ordering problems with the kernel lock, we need to make sure
we block all interrupts that can grab the kernel lock. The simplest way to achieve this is to make sure mutexes always raise the ipl to the highest level that has interrupts that grab the kernel lock. This will allow us to have "mpsafe" interrupt handlers at lower priority levels. No change for non-MULTIPROCESSOR kernels. ok miod@
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