From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg Kroah-Hartman Date: Tue, 27 Feb 2018 12:39:16 +0000 Subject: Re: [PATCH v4 3/3] s390/setup : enable display support for KVM guest Message-Id: <20180227123916.GA31888@kroah.com> List-Id: References: <0b58aec3-7434-e059-386d-2dacebdf39aa@de.ibm.com> In-Reply-To: <0b58aec3-7434-e059-386d-2dacebdf39aa@de.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Christian Borntraeger Cc: Farhan Ali , linux-kernel@vger.kernel.org, linux-fbdev@vger.kernel.org, linux-s390@vger.kernel.org, thuth@redhat.com, cohuck@redhat.com, tomi.valkeinen@ti.com, b.zolnierkie@samsung.com, geert@linux-m68k.org On Tue, Feb 27, 2018 at 10:23:34AM +0100, Christian Borntraeger wrote: > Greg FYI, I plan to carry this patch via the s390/kvm tree. > As it drivers/tty/Kconfig, can you give an ack for this part? > > > On 02/22/2018 05:22 PM, Farhan Ali wrote: > > The S390 architecture does not support any graphics hardware, > > but with the latest support for Virtio GPU in Linux and Virtio > > GPU emulation in QEMU, it's possible to enable graphics for > > S390 using the Virtio GPU device. > > > > To enable display we need to enable the Linux Virtual Terminal (VT) > > layer for S390. But the VT subsystem initializes quite early > > at boot so we need a dummy console driver till the Virtio GPU > > driver is initialized and we can run the framebuffer console. > > > > The framebuffer console over a Virtio GPU device can be run > > in combination with the serial SCLP console (default on S390). > > The SCLP console can still be accessed by management applications > > (eg: via Libvirt's virsh console). > > > > Signed-off-by: Farhan Ali > > Acked-by: Christian Borntraeger > > Reviewed-by: Thomas Huth > > --- > > arch/s390/kernel/setup.c | 2 ++ > > drivers/tty/Kconfig | 2 +- > > drivers/video/console/Kconfig | 2 +- > > 3 files changed, 4 insertions(+), 2 deletions(-) Acked-by: Greg Kroah-Hartman