From: Christian Borntraeger <borntraeger@de.ibm.com>
To: Avi Kivity <avi@redhat.com>, Marcelo Tossati <mtosatti@redhat.com>
Cc: Carsten Otte <cotte@de.ibm.com>, Alexander Graf <agraf@suse.de>,
Jens Freimann <jfrei@linux.vnet.ibm.com>,
Cornelia Huck <cornelia.huck@de.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
KVM <kvm@vger.kernel.org>
Subject: [patch 0/3] RFC: provide synchronous registers in kvm_run
Date: Thu, 22 Dec 2011 12:56:46 +0100 [thread overview]
Message-ID: <20111222115646.248800653@de.ibm.com> (raw)
Avi, Marcelo,
currently userspace can access guest registers via several ioctls. Some
of these registers might be useful very often. Here the system call overhead
for ioctl can make an exit more expensive than necessary.
In a discussion with Alex Graf we concluded that it might be beneficial to
have a subset of registers available in kvm_run. (The ioctls will also be
available).
This series provides a prototype implementation together with two example
users for s390.
Opionions?
next reply other threads:[~2011-12-22 12:00 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-22 11:56 Christian Borntraeger [this message]
2011-12-22 11:56 ` [patch 1/3] kvm: provide synchronous registers in kvm_run Christian Borntraeger
2011-12-22 12:28 ` Avi Kivity
2012-01-09 12:59 ` Alexander Graf
2011-12-22 11:56 ` [patch 2/3] kvm-s390: provide the prefix register via kvm_run Christian Borntraeger
2011-12-22 11:56 ` [patch 3/3] kvm-s390: provide general purpose registers " Christian Borntraeger
2011-12-22 12:34 ` Avi Kivity
2011-12-22 12:39 ` Christian Borntraeger
2011-12-22 12:46 ` Avi Kivity
2011-12-22 12:41 ` Heiko Carstens
2011-12-22 12:47 ` Avi Kivity
2011-12-22 12:35 ` [patch 0/3] RFC: provide synchronous registers in kvm_run Avi Kivity
2011-12-22 12:49 ` Christian Borntraeger
2011-12-22 12:54 ` Avi Kivity
2011-12-22 13:17 ` Christian Borntraeger
2011-12-22 13:25 ` Avi Kivity
[not found] ` <1325605858-30492-1-git-send-email-borntraeger@de.ibm.com>
[not found] ` <1325605858-30492-4-git-send-email-borntraeger@de.ibm.com>
2012-01-04 8:16 ` [PATCH 3/3] kvm-s390: provide standard guest registers via kvm_run Heiko Carstens
2012-01-04 8:30 ` Christian Borntraeger
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