similar to: [PATCH v4 0/4] virtio: Clean up scatterlists and use the DMA API

On Tue, 2015-07-28 at 10:16 +0200, Paolo Bonzini wrote: > > On 28/07/2015 03:08, Andy Lutomirski wrote: > > On Mon, Sep 1, 2014 at 10:39 AM, Andy Lutomirski <luto at amacapital.net> wrote: > >> This fixes virtio on Xen guests as well as on any other platform > >> that uses virtio_pci on which physical addresses don't match bus > >> addresses. >

On Tue, 2015-07-28 at 10:16 +0200, Paolo Bonzini wrote: > > On 28/07/2015 03:08, Andy Lutomirski wrote: > > On Mon, Sep 1, 2014 at 10:39 AM, Andy Lutomirski <luto at amacapital.net> wrote: > >> This fixes virtio on Xen guests as well as on any other platform > >> that uses virtio_pci on which physical addresses don't match bus > >> addresses. >

On 28/07/2015 03:08, Andy Lutomirski wrote: > On Mon, Sep 1, 2014 at 10:39 AM, Andy Lutomirski <luto at amacapital.net> wrote: >> This fixes virtio on Xen guests as well as on any other platform >> that uses virtio_pci on which physical addresses don't match bus >> addresses. >> >> This can be tested with: >> >> virtme-run --xen xen --kimg

This fixes virtio on Xen guests as well as on any other platform that uses virtio_pci on which physical addresses don't match bus addresses. This can be tested with: virtme-run --xen xen --kimg arch/x86/boot/bzImage --console using virtme from here: https://git.kernel.org/cgit/utils/kernel/virtme/virtme.git Without these patches, the guest hangs forever. With these patches,

This fixes virtio on Xen guests as well as on any other platform that uses virtio_pci on which physical addresses don't match bus addresses. This can be tested with: virtme-run --xen xen --kimg arch/x86/boot/bzImage --console using virtme from here: https://git.kernel.org/cgit/utils/kernel/virtme/virtme.git Without these patches, the guest hangs forever. With these patches,

This fixes virtio on Xen guests as well as on any other platform on which physical addresses don't match bus addresses. This can be tested with: virtme-run --xen xen --kimg arch/x86/boot/bzImage --console using virtme from here: https://git.kernel.org/cgit/utils/kernel/virtme/virtme.git Without these patches, the guest hangs forever. With these patches, everything works. There

This fixes virtio on Xen guests as well as on any other platform on which physical addresses don't match bus addresses. This can be tested with: virtme-run --xen xen --kimg arch/x86/boot/bzImage --console using virtme from here: https://git.kernel.org/cgit/utils/kernel/virtme/virtme.git Without these patches, the guest hangs forever. With these patches, everything works. There

This fixes virtio on Xen guests as well as on any other platform that uses virtio_pci on which physical addresses don't match bus addresses. This can be tested with: virtme-run --xen xen --kimg arch/x86/boot/bzImage --console using virtme from here: https://git.kernel.org/cgit/utils/kernel/virtme/virtme.git Without these patches, the guest hangs forever. With these patches,

This fixes virtio on Xen guests as well as on any other platform that uses virtio_pci on which physical addresses don't match bus addresses. This can be tested with: virtme-run --xen xen --kimg arch/x86/boot/bzImage --console using virtme from here: https://git.kernel.org/cgit/utils/kernel/virtme/virtme.git Without these patches, the guest hangs forever. With these patches,

On Wed, Aug 27, 2014 at 9:13 AM, Christopher Covington <cov at codeaurora.org> wrote: > On 08/27/2014 11:50 AM, Andy Lutomirski wrote: >> On Wed, Aug 27, 2014 at 8:45 AM, Michael S. Tsirkin <mst at redhat.com> wrote: >>> On Wed, Aug 27, 2014 at 08:11:15AM -0700, Andy Lutomirski wrote: >>>> On Aug 26, 2014 11:46 PM, "Stefan Hajnoczi" <stefanha

On Wed, Aug 27, 2014 at 9:13 AM, Christopher Covington <cov at codeaurora.org> wrote: > On 08/27/2014 11:50 AM, Andy Lutomirski wrote: >> On Wed, Aug 27, 2014 at 8:45 AM, Michael S. Tsirkin <mst at redhat.com> wrote: >>> On Wed, Aug 27, 2014 at 08:11:15AM -0700, Andy Lutomirski wrote: >>>> On Aug 26, 2014 11:46 PM, "Stefan Hajnoczi" <stefanha

This fixes virtio on Xen guests as well as on any other platform that uses virtio_pci on which physical addresses don't match bus addresses. This can be tested with: virtme-run --xen xen --kimg arch/x86/boot/bzImage --console using virtme from here: https://git.kernel.org/cgit/utils/kernel/virtme/virtme.git Without these patches, the guest hangs forever. With these patches,

This fixes virtio on Xen guests as well as on any other platform that uses virtio_pci on which physical addresses don't match bus addresses. This can be tested with: virtme-run --xen xen --kimg arch/x86/boot/bzImage --console using virtme from here: https://git.kernel.org/cgit/utils/kernel/virtme/virtme.git Without these patches, the guest hangs forever. With these patches,

On Wed, Aug 27, 2014 at 8:45 AM, Michael S. Tsirkin <mst at redhat.com> wrote: > On Wed, Aug 27, 2014 at 08:11:15AM -0700, Andy Lutomirski wrote: >> On Aug 26, 2014 11:46 PM, "Stefan Hajnoczi" <stefanha at gmail.com> wrote: >> > >> > On Tue, Aug 26, 2014 at 10:16 PM, Andy Lutomirski <luto at amacapital.net> wrote: >> > > There are

On Wed, Aug 27, 2014 at 8:45 AM, Michael S. Tsirkin <mst at redhat.com> wrote: > On Wed, Aug 27, 2014 at 08:11:15AM -0700, Andy Lutomirski wrote: >> On Aug 26, 2014 11:46 PM, "Stefan Hajnoczi" <stefanha at gmail.com> wrote: >> > >> > On Tue, Aug 26, 2014 at 10:16 PM, Andy Lutomirski <luto at amacapital.net> wrote: >> > > There are

This fixes virtio on Xen guests as well as on any other platform that uses virtio_pci on which physical addresses don't match bus addresses. This can be tested with: virtme-run --xen xen --kimg arch/x86/boot/bzImage --console using virtme from here: https://git.kernel.org/cgit/utils/kernel/virtme/virtme.git Without these patches, the guest hangs forever. With these patches,

This fixes virtio on Xen guests as well as on any other platform that uses virtio_pci on which physical addresses don't match bus addresses. This can be tested with: virtme-run --xen xen --kimg arch/x86/boot/bzImage --console using virtme from here: https://git.kernel.org/cgit/utils/kernel/virtme/virtme.git Without these patches, the guest hangs forever. With these patches,

On Wed, Aug 27, 2014 at 10:34 AM, Christopher Covington <cov at codeaurora.org> wrote: > On 08/27/2014 12:19 PM, Andy Lutomirski wrote: >> On Wed, Aug 27, 2014 at 9:13 AM, Christopher Covington >> <cov at codeaurora.org> wrote: > > Virtme looks interesting. If it's any use, here is my modest QEMU command line > collection. > >

On Wed, Aug 27, 2014 at 10:34 AM, Christopher Covington <cov at codeaurora.org> wrote: > On 08/27/2014 12:19 PM, Andy Lutomirski wrote: >> On Wed, Aug 27, 2014 at 9:13 AM, Christopher Covington >> <cov at codeaurora.org> wrote: > > Virtme looks interesting. If it's any use, here is my modest QEMU command line > collection. > >

Currently, a lot of the virtio code assumes that bus (i.e. hypervisor) addresses are the same as physical address. This is false on Xen, so virtio is completely broken. I wouldn't be surprised if it also becomes a problem the first time that someone sticks a physical "virtio" device on a 32-bit bus on an ARM SOC with more than 4G RAM. Would you accept patches to convert