Re: [PATCH RESEND v2 0/4] multiple memory backend support for CPR Live Updates
I'm so sorry, Martin.
You literally JUST replied (this morning! so funny!) and I totally
missed those emails.
I will reply in the other thread.
Please disregard this resend.
- Michael
On 8/6/24 15:32, mgalaxy(a)akamai.com wrote:
> From: Michael Galaxy <mgalaxy(a)akamai.com>
>
> CPR-based support for whole-hypervisor kexec-based live updates is
> now finally merged into QEMU. In support of this, we need NUMA to be
> supported in these kinds of environments. To do this we use a technology
> called PMEM (persistent memory) in Linux, which underpins the ability for
> CPR Live Updates to work so that QEMU memory can remain in RAM and
> be recovered after a kexec operationg has completed. Our systems are highly
> NUMA-aware, and so this patch series enables NUMA awareness for live updates.
>
> Further, we make a small change that allows live migrations to work
> between *non* PMEM-based systems and PMEM-based systems (and
> vice-versa). This allows for seemless upgrades from non-live-compatible
> systems to live-update-compatible sytems without any downtime.
>
> Michael Galaxy (4):
> qemu.conf changes to support multiple memory backend
> Support live migration between file-backed memory and anonymous
> memory.
> Update unit test to support multiple memory backends
> Update documentation to reflect memory_backing_dir change in qemu.conf
>
> NEWS.rst | 7 ++
> docs/kbase/virtiofs.rst | 2 +
> src/qemu/qemu.conf.in | 2 +
> src/qemu/qemu_command.c | 8 ++-
> src/qemu/qemu_conf.c | 141 +++++++++++++++++++++++++++++++++++-----
> src/qemu/qemu_conf.h | 14 ++--
> src/qemu/qemu_domain.c | 24 +++++--
> src/qemu/qemu_driver.c | 29 +++++----
> src/qemu/qemu_hotplug.c | 6 +-
> src/qemu/qemu_process.c | 44 +++++++------
> src/qemu/qemu_process.h | 7 +-
> tests/testutilsqemu.c | 5 +-
> 12 files changed, 221 insertions(+), 68 deletions(-)
>