Ozan Türkyılmaz wrote:
hey all,
it's not really kernel reletad but, kernel peaple should be trasted
with hardware questions.
my question is this: today a lot of CPUs (x36 based ones) come with
visualization extensions and
a lot of visualization software supports this extensions. my
question is that this visualization extensions
can really make difference of performance of guest OS.
ps: i got AMD 64 cpu with AMD-V extensions.
I think, what you are talking about is virtualization, not visualization?
And, yes these extensions really speed up virtualization, the reason for
this is, that a guest OS that
is running in Ring3 (unprivileged mode) is not allowed to do the
priviledged operations. If you do not have
a hardware support for virtualization, these priviledged operations have
to be emulated in software, which
is really slow.
regards,
andi
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