From: Janosch Frank <frankja@linux.ibm.com>
To: kvm@vger.kernel.org
Cc: linux-s390@vger.kernel.org, imbrenda@linux.ibm.com,
david@redhat.com, borntraeger@linux.ibm.com
Subject: Re: [PATCH v2 0/9] kvm: s390: Add PV dump support
Date: Wed, 27 Apr 2022 09:07:44 +0200 [thread overview]
Message-ID: <07c0a131-d695-1c08-e500-94b593203db9@linux.ibm.com> (raw)
In-Reply-To: <20220310103112.2156-1-frankja@linux.ibm.com>
On 3/10/22 11:31, Janosch Frank wrote:
> Sometimes dumping inside of a VM fails, is unavailable or doesn't
> yield the required data. For these occasions we dump the VM from the
> outside, writing memory and cpu data to a file.
>
> Up to now PV guests only supported dumping from the inside of the
> guest through dumpers like KDUMP. A PV guest can be dumped from the
> hypervisor but the data will be stale and / or encrypted.
>
> To get the actual state of the PV VM we need the help of the
> Ultravisor who safeguards the VM state. New UV calls have been added
> to initialize the dump, dump storage state data, dump cpu data and
> complete the dump process.
Ping
prev parent reply other threads:[~2022-04-27 7:07 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-10 10:31 [PATCH v2 0/9] kvm: s390: Add PV dump support Janosch Frank
2022-03-10 10:31 ` [PATCH v2 1/9] s390x: Add SE hdr query information Janosch Frank
2022-03-10 10:31 ` [PATCH v2 2/9] s390: uv: Add dump fields to query Janosch Frank
2022-03-10 10:31 ` [PATCH v2 3/9] KVM: s390: pv: Add query interface Janosch Frank
2022-03-11 17:40 ` Claudio Imbrenda
2022-03-14 10:02 ` Janosch Frank
2022-03-14 10:17 ` Claudio Imbrenda
2022-03-14 10:34 ` Janosch Frank
2022-03-10 10:31 ` [PATCH v2 4/9] KVM: s390: pv: Add dump support definitions Janosch Frank
2022-03-11 17:42 ` Claudio Imbrenda
2022-03-10 10:31 ` [PATCH v2 5/9] KVM: s390: pv: Add query dump information Janosch Frank
2022-03-11 17:44 ` Claudio Imbrenda
2022-03-10 10:31 ` [PATCH v2 6/9] kvm: s390: Add configuration dump functionality Janosch Frank
2022-04-27 12:14 ` Claudio Imbrenda
2022-04-27 12:58 ` Janosch Frank
2022-03-10 10:31 ` [PATCH v2 7/9] kvm: s390: Add CPU " Janosch Frank
2022-03-10 10:31 ` [PATCH v2 8/9] Documentation: virt: Protected virtual machine dumps Janosch Frank
2022-03-10 10:31 ` [PATCH v2 9/9] Documentation/virt/kvm/api.rst: Add protvirt dump/info api descriptions Janosch Frank
2022-04-27 7:07 ` Janosch Frank [this message]
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