Re: [Xen-devel] Future support of 5-level paging in Xen:wq

2016-12-13 Thread George Dunlap
> On Dec 13, 2016, at 12:16 PM, Tian, Kevin wrote: > >> From: Li, Liang Z >> Sent: Tuesday, December 13, 2016 11:58 AM >> >> Hi All, >> >> We are now working on enabling 5 level paging & 5 level EPT for XEN. We need >> the >> community's opinions about the following aspects: >> >> 1. Should

Re: [Xen-devel] Future support of 5-level paging in Xen:wq

2016-12-13 Thread Andrew Cooper
On 13/12/16 05:44, Li, Liang Z wrote: >> Subject: RE: [Xen-devel] Future support of 5-level paging in Xen:wq >> >>> From: Li, Liang Z >>> Sent: Tuesday, December 13, 2016 11:58 AM >>> >>> Hi All, >>> >>> We are now working

Re: [Xen-devel] Future support of 5-level paging in Xen:wq

2016-12-13 Thread Jan Beulich
>>> On 13.12.16 at 04:57, wrote: > 1. Should we enable 5 level paging for PV guest ? (You are discussing) Personally I think we should, but as you say - we haven't settled on this yet. > 2. Should we make the 5 level paging and 4 level paging supported with one > binary? May I suggest to mak

Re: [Xen-devel] Future support of 5-level paging in Xen:wq

2016-12-12 Thread Li, Liang Z
> Subject: RE: [Xen-devel] Future support of 5-level paging in Xen:wq > > > From: Li, Liang Z > > Sent: Tuesday, December 13, 2016 11:58 AM > > > > Hi All, > > > > We are now working on enabling 5 level paging & 5 level EPT for XEN. > > We need

Re: [Xen-devel] Future support of 5-level paging in Xen:wq

2016-12-12 Thread Zhang, Xiong Y
> > From: Li, Liang Z > > Sent: Tuesday, December 13, 2016 11:58 AM > > > > Hi All, > > > > We are now working on enabling 5 level paging & 5 level EPT for XEN. We need > the > > community's opinions about the following aspects: > > > > 1. Should we enable 5 level paging for PV guest ? (You are di

Re: [Xen-devel] Future support of 5-level paging in Xen:wq

2016-12-12 Thread Tian, Kevin
> From: Li, Liang Z > Sent: Tuesday, December 13, 2016 11:58 AM > > Hi All, > > We are now working on enabling 5 level paging & 5 level EPT for XEN. We need > the > community's opinions about the following aspects: > > 1. Should we enable 5 level paging for PV guest ? (You are discussing) > 2.

Re: [Xen-devel] Future support of 5-level paging in Xen:wq

2016-12-12 Thread Li, Liang Z
Hi All, We are now working on enabling 5 level paging & 5 level EPT for XEN. We need the community's opinions about the following aspects: 1. Should we enable 5 level paging for PV guest ? (You are discussing) 2. Should we make the 5 level paging and 4 level paging supported with one binary?

Re: [Xen-devel] Future support of 5-level paging in Xen:wq

2016-12-12 Thread Konrad Rzeszutek Wilk
> > So basically you are telling us that due to nested virt on AWS we will > > never be able to drop PV support, right? > > That's right, although never say never :-) Unless cloud provides exposes VMX to the guests (nested virtualization). > > > > Why are we pushing PVH then? > > Because it i

Re: [Xen-devel] Future support of 5-level paging in Xen:wq

2016-12-12 Thread Stefano Stabellini
On Mon, 12 Dec 2016, Juergen Gross wrote: > On 09/12/16 20:31, Stefano Stabellini wrote: > > On Fri, 9 Dec 2016, Juergen Gross wrote: > >> On 09/12/16 00:50, Stefano Stabellini wrote: > >>> On Thu, 8 Dec 2016, Andrew Cooper wrote: > On 08/12/2016 19:18, Stefano Stabellini wrote: > > On Thu

Re: [Xen-devel] Future support of 5-level paging in Xen:wq

2016-12-11 Thread Juergen Gross
On 09/12/16 20:31, Stefano Stabellini wrote: > On Fri, 9 Dec 2016, Juergen Gross wrote: >> On 09/12/16 00:50, Stefano Stabellini wrote: >>> On Thu, 8 Dec 2016, Andrew Cooper wrote: On 08/12/2016 19:18, Stefano Stabellini wrote: > On Thu, 8 Dec 2016, Andrew Cooper wrote: >> On 08/12/16

Re: [Xen-devel] Future support of 5-level paging in Xen:wq

2016-12-09 Thread Andrew Cooper
On 09/12/16 19:31, Stefano Stabellini wrote: > On Fri, 9 Dec 2016, Juergen Gross wrote: >> On 09/12/16 00:50, Stefano Stabellini wrote: >>> On Thu, 8 Dec 2016, Andrew Cooper wrote: On 08/12/2016 19:18, Stefano Stabellini wrote: > On Thu, 8 Dec 2016, Andrew Cooper wrote: >> On 08/12/16

Re: [Xen-devel] Future support of 5-level paging in Xen:wq

2016-12-09 Thread Stefano Stabellini
On Fri, 9 Dec 2016, Juergen Gross wrote: > On 09/12/16 00:50, Stefano Stabellini wrote: > > On Thu, 8 Dec 2016, Andrew Cooper wrote: > >> On 08/12/2016 19:18, Stefano Stabellini wrote: > >>> On Thu, 8 Dec 2016, Andrew Cooper wrote: > On 08/12/16 16:46, Juergen Gross wrote: > > The first ro

Re: [Xen-devel] Future support of 5-level paging in Xen:wq

2016-12-08 Thread Juergen Gross
On 09/12/16 00:50, Stefano Stabellini wrote: > On Thu, 8 Dec 2016, Andrew Cooper wrote: >> On 08/12/2016 19:18, Stefano Stabellini wrote: >>> On Thu, 8 Dec 2016, Andrew Cooper wrote: On 08/12/16 16:46, Juergen Gross wrote: > The first round of (very preliminary) patches for supporting the

Re: [Xen-devel] Future support of 5-level paging in Xen:wq

2016-12-08 Thread Stefano Stabellini
On Thu, 8 Dec 2016, Andrew Cooper wrote: > On 08/12/2016 19:18, Stefano Stabellini wrote: > > On Thu, 8 Dec 2016, Andrew Cooper wrote: > >> On 08/12/16 16:46, Juergen Gross wrote: > >>> The first round of (very preliminary) patches for supporting the new > >>> 5-level paging of future Intel x86 pro