From: Cornelia Huck <cohuck@redhat.com>
To: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: qemu-s390x <qemu-s390x@nongnu.org>,
qemu-devel <qemu-devel@nongnu.org>,
Thomas Huth <thuth@redhat.com>,
David Hildenbrand <david@redhat.com>,
Halil Pasic <pasic@linux.vnet.ibm.com>,
Janosch Frank <frankja@linux.vnet.ibm.com>
Subject: Re: [Qemu-devel] [PATCH 1/1] s390/kvm: implement clearing part of IPL clear
Date: Mon, 5 Mar 2018 13:54:14 +0100 [thread overview]
Message-ID: <20180305135414.11681139.cohuck@redhat.com> (raw)
In-Reply-To: <20180228195320.165230-1-borntraeger@de.ibm.com>
On Wed, 28 Feb 2018 19:53:20 +0000
Christian Borntraeger <borntraeger@de.ibm.com> wrote:
> When a guests reboots with diagnose 308 subcode 3 it requests the memory
> to be cleared. We did not do it so far. This does not only violate the
> architecture, it also misses the chance to free up that memory on
> reboot, which would help on host memory over commitment. By using
> ram_block_discard_range we can cover both cases.
>
> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
> ---
> target/s390x/kvm.c | 19 +++++++++++++++++++
> 1 file changed, 19 insertions(+)
So, this needs more thought (and additional kernel changes)? (Trying to
pick up patches that make sense for 2.12.)
next prev parent reply other threads:[~2018-03-05 12:54 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-28 19:53 [Qemu-devel] [PATCH 1/1] s390/kvm: implement clearing part of IPL clear Christian Borntraeger
2018-03-01 3:58 ` Thomas Huth
2018-03-01 7:37 ` Christian Borntraeger
2018-03-01 8:44 ` Paolo Bonzini
2018-03-01 9:24 ` Dr. David Alan Gilbert
2018-03-01 11:00 ` Christian Borntraeger
2018-03-01 11:45 ` Dr. David Alan Gilbert
2018-03-01 12:08 ` Christian Borntraeger
2018-03-01 12:28 ` Dr. David Alan Gilbert
2018-03-01 12:35 ` Christian Borntraeger
2018-03-01 12:39 ` Christian Borntraeger
2018-03-01 12:58 ` Dr. David Alan Gilbert
2018-03-01 12:49 ` Dr. David Alan Gilbert
2018-03-01 9:21 ` David Hildenbrand
2018-03-05 12:54 ` Cornelia Huck [this message]
2018-03-05 13:04 ` Christian Borntraeger
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