[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] xen: make (set|get)_xen_guest_handle available
On Thursday 30 July 2009 14:41:33 Boris Derzhavets wrote: > Hi Christoph, > > > NetBSD 5.0 got Xen 3.x support (both 32bit and 64bit), kept Xen 2 support > > Sounds a bit strange for me. Like only 3.X Xen Hypervisor could be > connected via hypercalls from NetBSD 5.0 DomU xenified kernel. ( For > instance Solaris Nevada until build 84(5) ( or so) required patch to work > with Xen 3.2 and higher Linux Dom0 ) Patches for NetBSD are maintained in NetBSD's package management (likewise Gentoo or Debian have their own patches in their packages). Most of them break non-NetBSD totally, that's why I can't just submit them at once. xen-unstable is in a very good shape though. patch queue is very small now. > Would NetBSD 5.0 understand Xen 3.4.1 Dom0 on top > of Ubuntu 9.04 or F11 (64-bit environment) ? Yes. > > Thanks. > Boris. > > --- On Thu, 7/30/09, Christoph Egger <Christoph.Egger@xxxxxxx> wrote: > > From: Christoph Egger <Christoph.Egger@xxxxxxx> > Subject: Re: [Xen-devel] [PATCH] xen: make (set|get)_xen_guest_handle > available To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx> > Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Keir > Fraser" <keir.fraser@xxxxxxxxxxxxx> Date: Thursday, July 30, 2009, 7:55 AM > > > Hi Boris, > > this is the history: > > NetBSD 2.0 got Xen 1.2 support (both Dom0 and DomU) > NetBSD 3.0 got Xen 2 support, dropped Xen 1.2 support (both Dom0 and DomU) > NetBSD 4.0 got Xen 3.0/3.1 support 32bit only, kept Xen 2 support (both > Dom0 and DomU) > NetBSD 5.0 got Xen 3.x support (both 32bit and 64bit), kept Xen 2 support > (both Dom0 and DomU) > NetBSD-current dropped Xen 2 support, about to move to new interface. > > Christoph > > On Thursday 30 July 2009 13:16:00 Boris Derzhavets wrote: > > May the recent version of NetBSD run as PV guest ? > > Sorry, for stupid question. > > Boris. > > > > --- On Thu, 7/30/09, Christoph Egger <Christoph.Egger@xxxxxxx> wrote: > > > > From: Christoph Egger <Christoph.Egger@xxxxxxx> > > Subject: Re: [Xen-devel] [PATCH] xen: make (set|get)_xen_guest_handle > > available To: "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx> > > Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> > > Date: Thursday, July 30, 2009, 6:34 AM > > > > On Thursday 30 July 2009 12:14:04 Keir Fraser wrote: > > > On 30/07/2009 10:12, "Christoph Egger" <Christoph.Egger@xxxxxxx> wrote: > > > > Make (set|get)_xen_guest_handle() always available. > > > > This avoids code snippets in the guest like this: > > > > > > > > #if __XEN_ITNERFACE_VERSION__ >= 0x00030201 > > > > set_xen_guest_handle(hnd, val); > > > > #else > > > > hnd = val; > > > > #endif > > > > > > Actually I don't see why you'd have code like this. *You*, the guest, > > > gets to specify __XEN_INTERFACE_VERSION__ -- that is the point of it -- > > > so ifdef'ing based on it in the guest is stupid. > > > > > > Just specify __XEN_INTERFACE_VERSION__ to be recent enough to have the > > > guest handles, and then remove your ifdefs. Simple. > > > > The point is to keep backward compatibility. The patch makes Xen more > > friendly with using the old non-structured guest handler if the user > > wants. > > > > NetBSD offers both way to build & run it with either using the old or new > > interface. This allows a smooth migration. > > > > Christoph -- ---to satisfy European Law for business letters: Advanced Micro Devices GmbH Karl-Hammerschmidt-Str. 34, 85609 Dornach b. Muenchen Geschaeftsfuehrer: Thomas M. McCoy, Giuliano Meroni Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen Registergericht Muenchen, HRB Nr. 43632 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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