From: Christian Borntraeger <borntraeger@de.ibm.com>
To: Avi Kivity <avi@redhat.com>
Cc: Marcelo Tossati <mtosatti@redhat.com>,
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: Re: [patch 3/3] kvm-s390: provide general purpose registers via kvm_run
Date: Thu, 22 Dec 2011 13:39:37 +0100 [thread overview]
Message-ID: <4EF32509.80200@de.ibm.com> (raw)
In-Reply-To: <4EF323DB.5000203@redhat.com>
On 22/12/11 13:34, Avi Kivity wrote:
>> The general purpose registers are often necessary to handle SIE exits.
>> Avoid additional ioctls by providing the guest registers in the r/w
>> section of the kvm_run structure.
>>
>
> This is only needed for S390_UCONTROL?
No for the standard path. It was more like a "we copy the regs around
anyway inside the kernel, so why not use kvm_run as a place to store
the guest regs". So I will probably also have a look at floating point
regs and access registers.
>
>>
>> struct sync_rw_regs {
>> + __u64 gprs[16]; /* general purpose registers */
>> };
>> #endif
>
> Don't you have to remove arch.guest_gprs too? (interesting approach btw).
Yes. Done
next prev parent reply other threads:[~2011-12-22 12:39 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-22 11:56 [patch 0/3] RFC: provide synchronous registers in kvm_run Christian Borntraeger
2011-12-22 11:56 ` [patch 1/3] kvm: " 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 [this message]
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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