On 30/10/2015 20:36, Eduardo Habkost wrote:
> In 2012, QEMU had a bug where it exposed QEMU version information
> to the guest, meaning a QEMU upgrade would expose different
> hardware to the guest OS even if the same machine-type is being
> used.
>
> The bug was fixed by commit 93bfef4c6e4b23caea9d51e1099d06433d8835a4,
> on all machines up to pc-1.0. But we kept introducing the same
> bug on all newer machines since then. That means we are breaking
> guest ABI every time QEMU was upgraded.
>
> Fix this by setting the hw_version on all PC machines, making
> sure the hardware won't change when upgrading QEMU.
>
> Eduardo Habkost (3):
> pc: Set hw_version on all machine classes
> osdep: Rename qemu_{get,set}_version() to qemu_{,set_}hw_version()
> megasas: Use qemu_hw_version() instead of QEMU_VERSION
>
> hw/arm/nseries.c | 2 +-
> hw/i386/pc_piix.c | 13 +++++++++++++
> hw/i386/pc_q35.c | 10 ++++++++++
> hw/ide/core.c | 2 +-
> hw/scsi/megasas.c | 2 +-
> hw/scsi/scsi-bus.c | 2 +-
> hw/scsi/scsi-disk.c | 2 +-
> include/qemu/osdep.h | 4 ++--
> target-i386/cpu.c | 2 +-
> util/osdep.c | 10 +++++-----
> vl.c | 2 +-
> 11 files changed, 37 insertions(+), 14 deletions(-)
>
Michael, is it okay for you if I merge this patch series?
Paolo
