Messages in this thread | | | From | Andy Lutomirski <> | Date | Wed, 21 May 2014 15:20:50 -0700 | Subject | Re: [RFC] x86_64: A real proposal for iret-less return to kernel |
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On Wed, May 21, 2014 at 3:17 PM, Borislav Petkov <bp@alien8.de> wrote: > On Wed, May 21, 2014 at 03:13:16PM -0700, Andy Lutomirski wrote: >> Why is this necessary? >> >> If the MCE hit kernel code, then we're going to die anyway. If the >> MCE hit user code, then we should be in a completely sensible context >> and we can just send the signal. > > Are we guaranteed that the first thing the process will execute when > scheduled back in are the signal handlers?
It's not even scheduled out, right? This should be just like a signal from a failed page fault, I think.
> > And besides, maybe we don't even want to allow to do the switch_to() but > kill it while it is sleeping.
What switch_to?
--Andy
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