lkml.org 
[lkml]   [2014]   [Mar]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 4/7] KVM: vmx: Allow the guest to run with dirty debug registers
Il 10/03/2014 13:17, Radim Krčmář ha scritto:
>> > I considered this, but decided that it's unlikely for emulation to
>> > be faster than hardware---especially on those AMD CPUs that lack
>> > decode assists (and it's good for VMX and SVM code to look as
>> > similar as possible).
> I meant to move it before the block that exits if there is the
> 'exception on access' bit set in cr7, so we wouldn't exit again right
> away on the actual access, which is quite likely.
> (Exiting without emulation was a great move.)
>

Ah yes, for the GD bit. I don't know, it's quite unlikely that anyone
will use it... It's a feeble attempt at allowing virtualization of the
debug registers without VMX.

Paolo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2014-03-10 14:01    [W:0.078 / U:0.328 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site