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The volatile volatile ranges patch set

The volatile volatile ranges patch set

Posted Jun 19, 2014 16:06 UTC (Thu) by josh (subscriber, #17465)
In reply to: The volatile volatile ranges patch set by pbonzini
Parent article: The volatile volatile ranges patch set

Wouldn't userfaultfd just work like a modified signalfd, usable for otherwise deadly signals like SIGBUS because it blocks the signaled thread until the signal gets read?

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The volatile volatile ranges patch set

Posted Jun 20, 2014 12:31 UTC (Fri) by pbonzini (subscriber, #60935) [Link]

Kind of, because IIUC userfaultfd also applies to page faults in the kernel. In the case of KVM, this means that the asynchronous page fault machinery can kick in.


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