Re: [Xen-devel] Oldest supported Xen version in upstream QEMU (Was: Re: [Minios-devel] [PATCH v2 0/15+5+5] Begin to disentangle libxenctrl and provide some stable libraries)

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Wed, Sep 23, 2015 at 09:29:10AM +0100, Ian Campbell wrote:
> On Tue, 2015-09-22 at 22:31 +0100, Stefano Stabellini wrote: 
> > The oldest Xen version I build-test for every pull request is Xen 4.0.0,
> > I think it is very reasonable to remove anything older than that.
> > I am OK with removing Xen 4.0.0 too, but I would like a warning to be
> > sent ahead of time to qemu-devel to see if anybody complains.
> 
> There is not much point in removing <=3.4 support and keeping 4.0, since
> 4.0.0 was the last one which used a plain int as a handle, anything older
> than 4.0.0 is trivial if 4.0.0 is supported.
> 
> One approach I am considering in order to keep 4.0.0 support and earlier
> was to turn the "int fd" for <=4.0 into a pointer by having the open
> wrapper do malloc(sizeof int) and the using wrappers do xc_foo(*handle).
> 
> This way all the different variants take pointers and we have less hoops to
> jump through to typedef everything in the correct way for each variant.
> 
> If you would rather avoid doing that then I think dropping 4.0.0 support
> would be the way to go and I'll send a mail to qemu-devel.

Perhaps to help in killing the 4.0.0 support - Linux pvops can't work
with Xen 4.0.0 - sadly I don't recall the details but I think it was missing
an hypercall.
> 
> Ian.
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxx
> http://lists.xen.org/xen-devel

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel