On 12/13/2012 11:05 AM, Borislav Petkov wrote:
>
> Ok, I grok it now. So, in most cases, mce.ip comes from pt_regs.ip which
> is unsigned long so we're fine for both 32- and 64-bit. There's only the
> case with precise RIP reporting where we get the rip from an MSR but
> even then, it should be 4 bytes on 32-bit since our addresses there are
> 4 bytes.
>
> So, actually struct mce should've had ->ip defined as an unsigned long
> from the very beginning. But we can't change that now because this
> struct is shared with userspace :(
>
Good thing, then,. otherwise we'd have a compat headache.
-hpa
--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.
------------------------------------------------------------------------------
LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial
Remotely access PCs and mobile devices and provide instant support
Improve your efficiency, and focus on delivering more value-add services
Discover what IT Professionals Know. Rescue delivers
http://p.sf.net/sfu/logmein_12329d2d
_______________________________________________
User-mode-linux-user mailing list
User-mode-linux-user@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
