* supervisory_mode_kernel
@ 2006-11-14 21:38 Ky Srinivasan
2006-11-15 9:52 ` supervisory_mode_kernel Ian Campbell
0 siblings, 1 reply; 4+ messages in thread
From: Ky Srinivasan @ 2006-11-14 21:38 UTC (permalink / raw)
To: xen-devel
When is this turned on.
Thanks,
K. Y
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: supervisory_mode_kernel
2006-11-14 21:38 supervisory_mode_kernel Ky Srinivasan
@ 2006-11-15 9:52 ` Ian Campbell
2006-11-15 14:52 ` supervisory_mode_kernel Ky Srinivasan
0 siblings, 1 reply; 4+ messages in thread
From: Ian Campbell @ 2006-11-15 9:52 UTC (permalink / raw)
To: Ky Srinivasan; +Cc: xen-devel
On Tue, 2006-11-14 at 14:38 -0700, Ky Srinivasan wrote:
> When is this turned on.
It is turned on by passing supervisor_mode_kernel=y when you build xen.
Ian.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: supervisory_mode_kernel
2006-11-15 9:52 ` supervisory_mode_kernel Ian Campbell
@ 2006-11-15 14:52 ` Ky Srinivasan
2006-11-15 15:01 ` supervisory_mode_kernel Ian Campbell
0 siblings, 1 reply; 4+ messages in thread
From: Ky Srinivasan @ 2006-11-15 14:52 UTC (permalink / raw)
To: Ian Campbell; +Cc: xen-devel
Ian,
Sorry for asking an imprecise question. I understand the mechanism for turning on this flag. What was not clear to me was when we would turn this on.
Regards,
K. Y
>>> On Wed, Nov 15, 2006 at 4:52 AM, in message
<1163584366.9325.28.camel@localhost.localdomain>, Ian Campbell
<Ian.Campbell@XenSource.com> wrote:
> On Tue, 2006- 11- 14 at 14:38 - 0700, Ky Srinivasan wrote:
>> When is this turned on.
>
> It is turned on by passing supervisor_mode_kernel=y when you build xen.
>
> Ian.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: supervisory_mode_kernel
2006-11-15 14:52 ` supervisory_mode_kernel Ky Srinivasan
@ 2006-11-15 15:01 ` Ian Campbell
0 siblings, 0 replies; 4+ messages in thread
From: Ian Campbell @ 2006-11-15 15:01 UTC (permalink / raw)
To: Ky Srinivasan; +Cc: xen-devel
On Wed, 2006-11-15 at 07:52 -0700, Ky Srinivasan wrote:
> Sorry for asking an imprecise question. I understand the mechanism for turning
> on this flag. What was not clear to me was when we would turn this on.
Probably never.
It was mainly intended as a proof of concept. There once was an idea
that it might be possible run a Xen/linux kernel+a thin shim on bare
metal with negligible loss of performance. With the paravirt ops
approach being taken with the upstreaming work there is little point in
that anymore.
Ian.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2006-11-15 15:01 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2006-11-14 21:38 supervisory_mode_kernel Ky Srinivasan
2006-11-15 9:52 ` supervisory_mode_kernel Ian Campbell
2006-11-15 14:52 ` supervisory_mode_kernel Ky Srinivasan
2006-11-15 15:01 ` supervisory_mode_kernel Ian Campbell
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