Re: [Qemu-devel] Framebuffer corruption in QEMU or Linux's cirrus driver
On 04/02/14 00:09, Andy Lutomirski wrote: > Running: > > ./virtme-run --installed-kernel > > from this virtme commit: > > https://git.kernel.org/cgit/utils/kernel/virtme/virtme.git/commit/?id=2b409a086d15b7a878c7d5204b1f44a6564a341f > > results in a bunch of missing lines of text once bootup finishes. > Pressing enter a few times gradually fixes it. > > I don't know whether this is a qemu bug or a Linux bug. > > I'm seeing this on Fedora's 3.13.7 kernel and on a fairly recent > 3.14-rc kernel. For the latter, cirrus is built-in (not a module), > I'm running: > > virtme-run --kimg arch/x86/boot/bzImage > > and I see more profound corruption. I'm seeing this on: - qemu: qemu-kvm-1.5.3-55.el7.x86_64 - guest: 3.13.6-100.fc19.x86_64 Screenshots: http://people.redhat.com/~lersek/cirrusdrmfb/ Thanks Laszlo
Re: [Qemu-devel] Framebuffer corruption in QEMU or Linux's cirrus driver
On Tue, Apr 1, 2014 at 3:09 PM, Andy Lutomirski wrote: > Running: > > ./virtme-run --installed-kernel > > from this virtme commit: > > https://git.kernel.org/cgit/utils/kernel/virtme/virtme.git/commit/?id=2b409a086d15b7a878c7d5204b1f44a6564a341f > > results in a bunch of missing lines of text once bootup finishes. > Pressing enter a few times gradually fixes it. > > I don't know whether this is a qemu bug or a Linux bug. > > I'm seeing this on Fedora's 3.13.7 kernel and on a fairly recent > 3.14-rc kernel. For the latter, cirrus is built-in (not a module), > I'm running: > > virtme-run --kimg arch/x86/boot/bzImage > > and I see more profound corruption. I'm guessing this is a cirrus drm bug. bochs-drm (using virtme-run --installed-kernel --qemu-opts -vga std) does not appear to have the same issue. Neither does qxl. (qxl is painfully slow, though, and it doesn't seem to be using UC memory.) --Andy
[Qemu-devel] Framebuffer corruption in QEMU or Linux's cirrus driver
Running: ./virtme-run --installed-kernel from this virtme commit: https://git.kernel.org/cgit/utils/kernel/virtme/virtme.git/commit/?id=2b409a086d15b7a878c7d5204b1f44a6564a341f results in a bunch of missing lines of text once bootup finishes. Pressing enter a few times gradually fixes it. I don't know whether this is a qemu bug or a Linux bug. I'm seeing this on Fedora's 3.13.7 kernel and on a fairly recent 3.14-rc kernel. For the latter, cirrus is built-in (not a module), I'm running: virtme-run --kimg arch/x86/boot/bzImage and I see more profound corruption. --Andy
