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Re: [Qemu-devel] [PATCH v2 0/5] s390: Support for Hotplug of Standby Mem
From: |
Matthew Rosato |
Subject: |
Re: [Qemu-devel] [PATCH v2 0/5] s390: Support for Hotplug of Standby Memory |
Date: |
Wed, 19 Mar 2014 08:50:09 -0400 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.3.0 |
On 03/10/2014 10:39 AM, Matthew Rosato wrote:
> On 02/24/2014 04:30 PM, Matthew Rosato 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).
>> New options, maxmem and slots, are added to the QEMU command line
>> memory parameter to specify the total amount of memory available
>> to the guest as well as the number of memory slots available.
>> 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.
>>
>> This patchset has been built to apply on the s390-next tree at:
>>
>> git://github.com/borntraeger/qemu.git s390-next
>>
>> Changes for v2:
>> * Removed the patch that introduced the standby-mem operand and
>> instead included Igor Mammedov's patches that add the mem-opts
>> 'maxmem' and 'slots', with a slight modification due to the removal
>> of qemu_opts_create_nofail.
>> * Patch 3 was inserted to add a new qom object that encapsulate variables
>> used by s390 memory hotplug. Patches 4 and 5 adjusted to use this
>> object.
>> * Added additional code comments and other minor changes per Alexander
>> Graf's comments
>>
>> Igor Mammedov (2):
>> vl: convert -m to QemuOpts
>> vl.c: extend -m option to support options for memory hotplug
>>
>> 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 | 42 +++++--
>> hw/s390x/sclp.c | 276
>> ++++++++++++++++++++++++++++++++++++++++++--
>> include/hw/s390x/sclp.h | 19 +++
>> qemu-options.hx | 10 +-
>> target-s390x/cpu.h | 18 +++
>> target-s390x/kvm.c | 5 +
>> vl.c | 98 ++++++++++++++--
>> 7 files changed, 440 insertions(+), 28 deletions(-)
>>
>
> Ping. Patches 3-5 in particular could still use a review.
>
Ping.