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Re: [Qemu-devel] [PATCH v5 0/3] s390: Support for Hotplug of Standby Mem
From: |
Igor Mammedov |
Subject: |
Re: [Qemu-devel] [PATCH v5 0/3] s390: Support for Hotplug of Standby Memory |
Date: |
Fri, 27 Jun 2014 11:07:05 +0200 |
On Wed, 25 Jun 2014 10:26:57 -0400
Matthew Rosato <address@hidden> wrote:
> This patchset adds support in s390 for a pool of standby memory,
> which can be set online/offline by the guest (ie, via chmem).
> The standby pool of memory is allocated as the difference between
> the initial memory setting and the maxmem setting.
> As part of this work, additional results are provided for the
> Read SCP Information SCLP, and new implentation is added for the
> Read Storage Element Information, Attach Storage Element,
> Assign Storage and Unassign Storage SCLPs, which enables the s390
> guest to manipulate the standby memory pool.
>
> This patchset is based on work originally done by Jeng-Fang (Nick)
> Wang.
Could you add short description how to test it, please.
>
> Changes for v5:
> * Since ACPI memory hotplug is now in, removed Igor's patches
> from this set.
> * Updated sclp.c to use object_resolve_path() instead of
> object_property_find().
>
> Changes for v4:
> * Remove initialization code from get_sclp_memory_hotplug_dev()
> and place in its own function, init_sclp_memory_hotplug_dev().
> * Add hit to qemu-options.hx to note the fact that the memory
> size specified via -m might be forced to a boundary.
> * Account for the legacy s390 machine, which does not support
> memory hotplug.
> * Fix a bug in sclp.c - Change memory hotplug device parent to
> sysbus.
> * Pulled latest version of Igor's patch.
>
> Matthew Rosato (3):
> sclp-s390: Add device to manage s390 memory hotplug
> virtio-ccw: Include standby memory when calculating storage increment
> sclp-s390: Add memory hotplug SCLPs
>
> hw/s390x/s390-virtio-ccw.c | 46 +++++--
> hw/s390x/sclp.c | 289
> +++++++++++++++++++++++++++++++++++++++++++-
> include/hw/s390x/sclp.h | 20 +++
> qemu-options.hx | 3 +-
> target-s390x/cpu.h | 18 +++
> target-s390x/kvm.c | 5 +
> 6 files changed, 366 insertions(+), 15 deletions(-)
>