From: Stefano Stabellini <sstabellini@kernel.org>
To: George Dunlap <george.dunlap@citrix.com>
Cc: xen-devel@lists.xenproject.org,
Stefano Stabellini <sstabellini@kernel.org>
Subject: Re: [PATCH raisin 4/4] Update to 4.7, update qemu and qemu_traditional recipes
Date: Tue, 14 Jun 2016 11:31:28 +0100 (BST) [thread overview]
Message-ID: <alpine.DEB.2.10.1606141130300.2878@sstabellini-ThinkPad-X260> (raw)
In-Reply-To: <575FD9AE.1080504@citrix.com>
On Tue, 14 Jun 2016, George Dunlap wrote:
> On 14/06/16 11:08, Stefano Stabellini wrote:
> > On Tue, 14 Jun 2016, George Dunlap wrote:
> >> On 14/06/16 10:46, Stefano Stabellini wrote:
> >>> On Mon, 13 Jun 2016, George Dunlap wrote:
> >>>> Add a 4.7 config file, make it the default.
> >>>>
> >>>> Also update the qemu and qemu_traditional recipies after Ian Cambell's
> >>>> work to split off separate libraries.
> >>>>
> >>>> Signed-off-by: George Dunlap <george.dunlap@citrix.com>
> >>>> ---
> >>>> CC: Stefano Stabellini <sstabellini@kernel.org>
> >>>> ---
> >>>> components/qemu | 21 +++++++++++++--------
> >>>> components/qemu_traditional | 2 +-
> >>>> configs/config-4.7 | 8 ++++++++
> >>>> defconfig | 2 +-
> >>>> 4 files changed, 23 insertions(+), 10 deletions(-)
> >>>>
> >>>> diff --git a/components/qemu b/components/qemu
> >>>> index e0d92a5..8624b50 100644
> >>>> --- a/components/qemu
> >>>> +++ b/components/qemu
> >>>> @@ -23,15 +23,20 @@ function qemu_build() {
> >>>> cd "$BASEDIR"
> >>>> git-checkout $QEMU_URL $QEMU_REVISION qemu-dir
> >>>> cd qemu-dir
> >>>> - ./configure --enable-xen --target-list=i386-softmmu --prefix=$PREFIX \
> >>>> - --extra-cflags="-I$INST_DIR/$PREFIX/include" \
> >>>> - --extra-ldflags="-L$INST_DIR/$PREFIX/lib -Wl,-rpath-link=$INST_DIR/$PREFIX/lib \
> >>>> +
> >>>> + ./configure --enable-xen --target-list=i386-softmmu \
> >>>> + --prefix=$PREFIX \
> >>>> + --extra-cflags="-DXC_WANT_COMPAT_EVTCHN_API=1 \
> >>>> + -DXC_WANT_COMPAT_GNTTAB_API=1 \
> >>>> + -DXC_WANT_COMPAT_MAP_FOREIGN_API=1 \
> >>>> + -I$INST_DIR/$PREFIX/include" \
> >>>> + --extra-ldflags="-L$INST_DIR/$PREFIX/lib -Wl,-rpath-link=$INST_DIR/$PREFIX/lib \
> >>>> -L$INST_DIR/$PREFIX/lib64 -Wl,-rpath-link=$INST_DIR/$PREFIX/lib64" \
> >>>> - --disable-kvm \
> >>>> - --disable-docs \
> >>>> - --bindir=$PREFIX/lib/xen/bin \
> >>>> - --datadir=$PREFIX/share/qemu-xen \
> >>>> - --disable-guest-agent
> >>>> + --bindir=$PREFIX/lib/xen/bin \
> >>>> + --datadir=$PREFIX/share/qemu-xen \
> >>>> + --disable-kvm \
> >>>> + --disable-docs \
> >>>> + --disable-guest-agent
> >>>
> >>> This is adding XC_WANT_COMPAT_EVTCHN_API=1, etc, unconditionally. If we
> >>> make this change, will raisin still be able to buil an older qemu
> >>> against an older xen?
> >>
> >> I've tested this with XEN_RELEASE set to 4.5 and 4.6, and it builds just
> >> fine. The #define is just ignored, since neither Xen nor qemu in the
> >> 4.5 and 4.6 branches know anything about it.
> >>
> >> If part of our goal is to be a repository of the canonical way to build
> >> things, though, perhaps it would be better to have the extra flags be
> >> conditional on the value of XEN_RELEASE.
> >
> > If we are sure that it's ignored than it might be benign. Maybe we
> > should just add an in-code comment to explain why we added it though.
>
> Well really, I think that the detection should be put into the qemu
> configure scripts -- i.e., it should detect that there's the new API and
> add the appropriate #defines itself. But that's the sort of change I
> don't think there will be a lot of enthusiasm for. :-)
Actually there is already code in QEMU configure script for the
detection. In fact I was wondering if explicitly passing XC_WANT_* is
actually necessary. I don't think it is from QEMU POV.
> I'll add a comment.
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next prev parent reply other threads:[~2016-06-14 10:31 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-13 14:44 [PATCH raisin 0/4] Fixes for 4.6, update to 4.7 George Dunlap
2016-06-13 14:44 ` [PATCH raisin 1/4] components/xen: Actually disable rombios George Dunlap
2016-06-14 9:32 ` Stefano Stabellini
2016-06-13 14:44 ` [PATCH raisin 2/4] config: Separate config urls into a separate file George Dunlap
2016-06-14 9:34 ` Stefano Stabellini
2016-06-13 14:44 ` [PATCH raisin 3/4] Update config-4.6 and config-4.5 to point to stable branches George Dunlap
2016-06-14 9:40 ` Stefano Stabellini
2016-06-14 9:57 ` George Dunlap
2016-06-14 10:01 ` Stefano Stabellini
2016-06-14 10:10 ` George Dunlap
2016-06-15 10:24 ` Stefano Stabellini
2016-06-15 10:38 ` George Dunlap
2016-06-15 10:53 ` Stefano Stabellini
2016-06-15 11:13 ` George Dunlap
2016-06-15 14:02 ` Stefano Stabellini
2016-06-15 16:11 ` George Dunlap
2016-06-13 14:44 ` [PATCH raisin 4/4] Update to 4.7, update qemu and qemu_traditional recipes George Dunlap
2016-06-14 9:46 ` Stefano Stabellini
2016-06-14 10:03 ` George Dunlap
2016-06-14 10:08 ` Stefano Stabellini
2016-06-14 10:17 ` George Dunlap
2016-06-14 10:31 ` Stefano Stabellini [this message]
2016-06-14 10:34 ` George Dunlap
2016-06-14 13:53 ` Anthony PERARD
2016-06-14 14:00 ` George Dunlap
2016-06-14 14:23 ` Anthony PERARD
2016-06-14 14:38 ` George Dunlap
2016-06-15 10:39 ` Stefano Stabellini
2016-06-15 10:42 ` George Dunlap
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