[Qemu-devel] [RFC] [PATCH 0/3] qemu: arm: Migration between machines with different MIDR values

[mjaggi]

From: Manish Jaggi <address@hidden>

QEMU on arm systems use -machine virt -cpu host option for a VM.
Migration thus is limited between machines with same cpu.

This is a limitation if migration is desired between cpus which are of same
family and have only few diferences like bug fixes which have no effect on
VM operation. They just differ in say MIDR values.

This patchset introduces a command line option -skipinvariant. Invariant
registers will be skipped from being restored from guests context on migrated
host.

Mailing list discussion on this topic: 
https://www.mail-archive.com/address@hidden/msg560043.html

Manish Jaggi (3):
  arm: API to check if the register is invariant
  arm: Introduce skipinvariant command line option
  arm: Skip invariant register restore

 qemu-options.hx      | 11 +++++++++++
 target/arm/kvm.c     |  3 +++
 target/arm/kvm32.c   |  5 +++++
 target/arm/kvm64.c   | 16 ++++++++++++++++
 target/arm/kvm_arm.h |  8 ++++++++
 vl.c                 | 22 ++++++++++++++++++++++
 6 files changed, 65 insertions(+)

-- 
1.8.3.1