Hi, Am 08.04.2013 18:05, schrieb Sriram Murthy: > The Virtualbox SVGA card was derived out of the KVM VGA card, so there are > quite a few similarities (I am deliberately being vague here as I am still in > the process of discovering the features of both these cards completely). > Having said that, the APIs and the data structures themselves have been > modified to add new features (like displaying a custom bmp as the VGA bootup > logo) and it has a custom vga bios as well. > Also, it is better that it be its own separate device model, so that > maintenance of the vbox code becomes easier later. Further, I am thinking on > the lines of retaining the VIrtualbox SVGA card code as is, and write a small > KVM abstraction layer, so that it will be easy to port the bug fixes into the > vbox SVGA card later on. > Any comments/suggestions welcome here.
Personally, I think that the connection between VirtualBox and QEMU is very unidirectional if there is any... So code-wise our focus should rather be to avoid code copies/divergence within our tree and to share code with existing in-tree devices, especially if you are not paid to continuously take care of this device once accepted into QEMU - that's how I interpret PMM's question below. There is nothing generally wrong with using KVM for guest driver development or to make existing stripped-down guest images work at all by adding such a special device. However, proposing to adopt a random vendor's paravirtual graphics card just because it has a few more resolutions and drivers on a particular platform does not strike me as a big advantage over SPICE, VMware VGA or past virtio-vga/-fb standardization attempts. Regards, Andreas > > -Sriram > > > > ----- Original Message ----- > From: Peter Maydell <peter.mayd...@linaro.org> > To: Sriram Murthy <srira...@yahoo.com> > Cc: Stefan Hajnoczi <stefa...@gmail.com>; qemu list <qemu-de...@nongnu.org>; > "kvm@vger.kernel.org" <kvm@vger.kernel.org> > Sent: Monday, April 8, 2013 8:11 AM > Subject: Re: [Qemu-devel] Virtualbox svga card in KVM > > On 6 April 2013 00:52, Sriram Murthy <srira...@yahoo.com> wrote: >> (actually, the virtualbox SVGA card is based off of the KVM VGA card) > > Is it possible to implement it as an extension to the VGA > card device, or has it diverged incompatibly such that it > has to be its own separate device model? > > thanks > -- PMM -- SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
