Re: [Xen-devel] PVHVM drivers in upstream linux kernel

2014-12-02 Thread Konrad Rzeszutek Wilk
On Tue, Dec 02, 2014 at 03:13:28PM +, Ian Campbell wrote: > On Tue, 2014-12-02 at 10:11 -0500, Konrad Rzeszutek Wilk wrote: > > > [0] The default i386 Debian installer falls into this camp, but you can > > > use the special PV Xen variant to install as PVHVM too so it's not so > > > critical. >

Re: [Xen-devel] PVHVM drivers in upstream linux kernel

2014-12-02 Thread Ian Campbell
On Tue, 2014-12-02 at 10:11 -0500, Konrad Rzeszutek Wilk wrote: > > [0] The default i386 Debian installer falls into this camp, but you can > > use the special PV Xen variant to install as PVHVM too so it's not so > > critical. > > And the Fedora 21 LiveISO (32-bit) does too. Interesting, I thoug

Re: [Xen-devel] PVHVM drivers in upstream linux kernel

2014-12-02 Thread Konrad Rzeszutek Wilk
On Tue, Dec 02, 2014 at 11:05:14AM +, Ian Campbell wrote: > On Tue, 2014-12-02 at 10:54 +, David Vrabel wrote: > > On 02/12/14 09:39, Juergen Gross wrote: > > > Hi, > > > > > > looking into the upstream linux sources I realized that the PVHVM > > > drivers of XEN are only available with th

Re: [Xen-devel] PVHVM drivers in upstream linux kernel

2014-12-02 Thread Konrad Rzeszutek Wilk
On Tue, Dec 02, 2014 at 10:39:59AM +0100, Juergen Gross wrote: > Hi, > > looking into the upstream linux sources I realized that the PVHVM > drivers of XEN are only available with the pvops kernel. Is this on > purpose? Shouldn't the frontend drivers, xen/platform-pci.c etc. be > configurable with

Re: [Xen-devel] PVHVM drivers in upstream linux kernel

2014-12-02 Thread Juergen Gross
On 12/02/2014 03:09 PM, David Vrabel wrote: On 02/12/14 13:00, Juergen Gross wrote: I'd see: - XEN_PV (selects PARAVIRT, XEN_FRONTEND): be able to run as pv-domain (x86 only) Depends on PARAVIRT perhaps? Chicken and egg problem? :-) I'd say select, as PARAVIRT isn't a primary function t

Re: [Xen-devel] PVHVM drivers in upstream linux kernel

2014-12-02 Thread David Vrabel
On 02/12/14 13:00, Juergen Gross wrote: > > I'd see: > - XEN_PV (selects PARAVIRT, XEN_FRONTEND): be able to run as pv-domain > (x86 only) Depends on PARAVIRT perhaps? > - XEN_PVHVM (selects XEN_FRONTEND): be able to run as hvm-domain with > pv-drivers > - XEN_BACKEND (selects PARAVIRT if x8

Re: [Xen-devel] PVHVM drivers in upstream linux kernel

2014-12-02 Thread Juergen Gross
On 12/02/2014 12:59 PM, David Vrabel wrote: On 02/12/14 11:33, Juergen Gross wrote: I think we have customers wanting to run a default kernel as domU. So it isn't always the distro refusing paravirt, it might be the user... I don't think this is a sensible use case but I'm not adverse to impr

Re: [Xen-devel] PVHVM drivers in upstream linux kernel

2014-12-02 Thread David Vrabel
On 02/12/14 11:33, Juergen Gross wrote: > > I think we have customers wanting to run a default kernel as domU. So it > isn't always the distro refusing paravirt, it might be the user... I don't think this is a sensible use case but I'm not adverse to improving the set of Xen config options. > To

Re: [Xen-devel] PVHVM drivers in upstream linux kernel

2014-12-02 Thread Juergen Gross
On 12/02/2014 12:36 PM, Ian Campbell wrote: On Tue, 2014-12-02 at 12:33 +0100, Juergen Gross wrote: On 12/02/2014 12:05 PM, Ian Campbell wrote: On Tue, 2014-12-02 at 10:54 +, David Vrabel wrote: On 02/12/14 09:39, Juergen Gross wrote: Hi, looking into the upstream linux sources I realize

Re: [Xen-devel] PVHVM drivers in upstream linux kernel

2014-12-02 Thread Ian Campbell
On Tue, 2014-12-02 at 12:33 +0100, Juergen Gross wrote: > On 12/02/2014 12:05 PM, Ian Campbell wrote: > > On Tue, 2014-12-02 at 10:54 +, David Vrabel wrote: > >> On 02/12/14 09:39, Juergen Gross wrote: > >>> Hi, > >>> > >>> looking into the upstream linux sources I realized that the PVHVM > >>>

Re: [Xen-devel] PVHVM drivers in upstream linux kernel

2014-12-02 Thread Juergen Gross
On 12/02/2014 12:05 PM, Ian Campbell wrote: On Tue, 2014-12-02 at 10:54 +, David Vrabel wrote: On 02/12/14 09:39, Juergen Gross wrote: Hi, looking into the upstream linux sources I realized that the PVHVM drivers of XEN are only available with the pvops kernel. Is this on purpose? Shouldn'

Re: [Xen-devel] PVHVM drivers in upstream linux kernel

2014-12-02 Thread Ian Campbell
On Tue, 2014-12-02 at 10:54 +, David Vrabel wrote: > On 02/12/14 09:39, Juergen Gross wrote: > > Hi, > > > > looking into the upstream linux sources I realized that the PVHVM > > drivers of XEN are only available with the pvops kernel. Is this on > > purpose? Shouldn't the frontend drivers, xe

Re: [Xen-devel] PVHVM drivers in upstream linux kernel

2014-12-02 Thread Juergen Gross
On 12/02/2014 11:54 AM, David Vrabel wrote: On 02/12/14 09:39, Juergen Gross wrote: Hi, looking into the upstream linux sources I realized that the PVHVM drivers of XEN are only available with the pvops kernel. Is this on purpose? Shouldn't the frontend drivers, xen/platform-pci.c etc. be confi

Re: [Xen-devel] PVHVM drivers in upstream linux kernel

2014-12-02 Thread David Vrabel
On 02/12/14 09:39, Juergen Gross wrote: > Hi, > > looking into the upstream linux sources I realized that the PVHVM > drivers of XEN are only available with the pvops kernel. Is this on > purpose? Shouldn't the frontend drivers, xen/platform-pci.c etc. be > configurable without having to enable CO