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Re: [PATCH v3 00/13] s390x: skey related fixes, cleanups, and memory dev

From: Thomas Huth
Subject: Re: [PATCH v3 00/13] s390x: skey related fixes, cleanups, and memory device preparations
Date: Tue, 7 Sep 2021 09:44:34 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0

On 03/09/2021 17.55, David Hildenbrand wrote:
This series fixes multiple TCG issues related to storage key instructions,
fixes some TCG issues related to LOAD REAL ADDRESS and skeys, implements
lazy skey enablement under TCG, and prepares the whole skey infrastructure
for dealing with addresses beyond initial RAM (e.g., memory devices like
virtio-mem). Along, some cleanups.

To prepare for memory devices / memory hotplug, my goal was to get rid of
as many ms->ram_size users as possible. Unfortunately, I stumbled over
many other things on the way. The remaining s390x users of ms->ram_size

a) hw/s390x/ipl.c: loading the FW. Won't need adjustment.
b) hw/s390x/s390-skeys.c: allocating the array for storage keys. Will need
    adjustment for memory devices.
c) hw/s390x/s390-stattrib-kvm.c: will need adjustments in the future when
    using memory devices with CMM.
d) hw/s390x/s390-virtio-ccw.c: fixing up / handling initital ram. Won't
    need adjustment.
e) hw/s390x/sclp.c: same as d)

Especially patch 9-12 also affect KVM. The remaining ones mostly only
affect TCG.

Thanks, applied to my s390x-next branch:



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