linux-kernel - Re: [PATCH v3 0/7] virtio-mem: s390 support

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Message-ID: <67a85d88-6705-4e8e-ba48-7b945aca4d8f@linux.ibm.com>
Date: Wed, 30 Oct 2024 17:49:15 +0100
From: Christian Borntraeger <borntraeger@...ux.ibm.com>
To: Heiko Carstens <hca@...ux.ibm.com>, David Hildenbrand <david@...hat.com>,
        Eric Farman <farman@...ux.ibm.com>
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-s390@...r.kernel.org, virtualization@...ts.linux.dev,
        linux-doc@...r.kernel.org, kvm@...r.kernel.org,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Alexander Gordeev
 <agordeev@...ux.ibm.com>,
        Sven Schnelle <svens@...ux.ibm.com>, Thomas Huth <thuth@...hat.com>,
        Cornelia Huck <cohuck@...hat.com>,
        Janosch Frank <frankja@...ux.ibm.com>,
        Claudio Imbrenda <imbrenda@...ux.ibm.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
        Eugenio Pérez
 <eperezma@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Jonathan Corbet <corbet@....net>,
        Hendrik Brueckner <brueckner@...ux.ibm.com>
Subject: Re: [PATCH v3 0/7] virtio-mem: s390 support



Am 30.10.24 um 10:34 schrieb Heiko Carstens:
> On Fri, Oct 25, 2024 at 04:14:45PM +0200, David Hildenbrand wrote:
>> Let's finally add s390 support for virtio-mem; my last RFC was sent
>> 4 years ago, and a lot changed in the meantime.
>>
>> The latest QEMU series is available at [1], which contains some more
>> details and a usage example on s390 (last patch).
>>
>> There is not too much in here: The biggest part is querying a new diag(500)
>> STORAGE_LIMIT hypercall to obtain the proper "max_physmem_end".
> 
> ...
> 
>> David Hildenbrand (7):
>>    Documentation: s390-diag.rst: make diag500 a generic KVM hypercall
>>    Documentation: s390-diag.rst: document diag500(STORAGE LIMIT)
>>      subfunction
>>    s390/physmem_info: query diag500(STORAGE LIMIT) to support QEMU/KVM
>>      memory devices
>>    virtio-mem: s390 support
>>    lib/Kconfig.debug: default STRICT_DEVMEM to "y" on s390
>>    s390/sparsemem: reduce section size to 128 MiB
>>    s390/sparsemem: provide memory_add_physaddr_to_nid() with CONFIG_NUMA
>>
>>   Documentation/virt/kvm/s390/s390-diag.rst | 35 +++++++++++++----
>>   arch/s390/boot/physmem_info.c             | 47 ++++++++++++++++++++++-
>>   arch/s390/boot/startup.c                  |  7 +++-
>>   arch/s390/include/asm/physmem_info.h      |  3 ++
>>   arch/s390/include/asm/sparsemem.h         | 10 ++++-
>>   drivers/virtio/Kconfig                    | 12 +++---
>>   lib/Kconfig.debug                         |  2 +-
>>   7 files changed, 98 insertions(+), 18 deletions(-)
> 
> I'll apply the whole series as soon as there are ACKs for the third
> patch, and from the KVM guys for the whole series.
> Christian, Janosch, Claudio?

Acked-by: Christian Borntraeger <borntraeger@...ux.ibm.com>
for the series.

@Eric Farman,
Was someone from your team planning to look into this (testing, review whatever)?