qemu: Add support for ARM

[devimc]

This patch introduces a new interface called qemuArch that contains the functions needed to create qemu specific architecture implementations. This patch also includes three qemu specific architecture implementations: qemuArchBase, qemuAmd64 and qemuArm64, since all architectures use similar qemu command lines, the base structure is qemuArchBase that is an agnostic implementation to start virtual machines, qemuAmd64 and qemuArm64 inherit and override (if needed) the functions of qemuArchBase, therefore architecture specific optimizations are in qemuAmd64 and qemuArm64. For example the appendImage function defined by qemuArchBase uses a block device to provide the image to the VM, qemuArm64 inherits and doesn't overwrite it, but qemuAmd64 inherits and overwites it to provide the image throught NVDIMM and DAX.

fixes #608 fixes #610 fixes #611 fixes #612

Signed-off-by: Julio Montes julio.montes@intel.com

[jodh-intel]

Nice PR.

Looks like it needs a rebase and a re-vendor of govmm for qemu.Machine.Options.

[devimc]

depends-on https://github.com/containers/virtcontainers/pull/625

[devimc]

@sameo @jodh-intel changes applied, thanks

[devimc]

@sboeuf changes applied, thanks

[sboeuf]

Thanks @devimc, I'll do the review on Tuesday (Monday being a public holiday in the US).

[devimc]

@jodh-intel changes applied, thanks

[sboeuf]

LGTM I'll wait for @jodh-intel to give his approval before to merge this.

[jodh-intel]

I still wonder if we need some rootflags for qemu_arm64.go, but for now...

lgtm

Great piece of work by the way @devimc !!

[sameo]

Thanks @devimc LGTM