Messages in this thread | | | Date | Mon, 21 Apr 2008 13:28:16 -0400 | From | "H. Peter Anvin" <> | Subject | Re: [RFC PATCH] x86 NMI-safe INT3 and Page Fault (v5) |
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Pavel Machek wrote: > >> There is also the page fault case. I think putting this test in >> ret_from_exception would be both safe (it is executed for any >> exception return) and fast (exceptions are rare). > > Eh? I thought that page fault is one of the hottest paths in kernel > (along with syscall and packet receive/send)... > Pavel
Yeah, and the concept of handling page faults inside an NMI handler is pure fantasy.
-hpa
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