Re: [Xen-devel] Stable backport request for new OVMF version

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 23.07.15 at 17:31, <wei.liu2@xxxxxxxxxx> wrote:
> On Thu, Jul 23, 2015 at 09:28:15AM -0600, Jan Beulich wrote:
>> >>> On 23.07.15 at 16:58, <ian.campbell@xxxxxxxxxx> wrote:
>> > On Thu, 2015-07-23 at 08:51 -0600, Jan Beulich wrote:
>> >> > 
>> >> > > > On 23.07.15 at 16:43, <ian.campbell@xxxxxxxxxx> wrote:
>> >> > On Thu, 2015-07-23 at 08:26 -0600, Jan Beulich wrote:
>> >> > > > 
>> >> > > > > > On 23.07.15 at 15:56, <ian.campbell@xxxxxxxxxx> wrote:
>> >> > > > The version of OVMF in 4.5 (and presumably earlier) doesn't 
>> >> > > > build 
>> >> > > > with
>> >> > > > the gcc in modern Linux distros (I noticed it with 4.9 from
>> >> > > > Debian/Jessie).
>> >> > > > 
>> >> > > > I think we should update Config.mk:OVMF_UPSTREAM_REVISION to
>> >> > > > cb9a7ebabcd6b8a49dc0854b2f9592d732b5afbd in all stable 
>> >> > > > branches. 
>> >> > > > That
>> >> > > > version is the one currently in master.
>> >> > > 
>> >> > > To be honest I didn't even know we support use of OVMF in any
>> >> > > released version (nor in unstable). When did this change?
>> >> > 
>> >> > It was present in 4.3. I don't think we build it by default since 
>> >> > its
>> >> > toolchain is a bit picky, but we turn it on and test it in osstest 
>> >> > from
>> >> > 4.4 onwards.
>> >> > 
>> >> > You can ask for it with bios="ovmf" in your hvm guest's config.
>> >> 
>> >> Well, that means it can be used by the adventurous, but it doesn't
>> >> mean we consider it supported.
>> > 
>> > TBH, I'm more concerned that it is a blocker for upgrade osstest to
>> > Debian Jessie, which in turn is a prerequisite for testing arm64.
>> 
>> If it was explicitly unsupported, I could say "do whatever you need
>> to do to it", but with not being sure what status it has I'm kind of
>> wondering what other changes (i.e. apart from fixing the build) the
>> tree(s) would get which then may break someone. But in the end
>> it's probably okay to do the change.
>> 
> 
> It's marked as experimental, not supported and not built by default --
> if that makes you feel more comfortable.

It does. So Ian, feel free to go ahead.

Jan


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