From: Heiko Carstens <hca@linux.ibm.com>
To: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>,
Janosch Frank <frankja@linux.ibm.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Claudio Imbrenda <imbrenda@linux.ibm.com>,
David Hildenbrand <david@redhat.com>,
Jonathan Corbet <corbet@lwn.net>,
kvm@vger.kernel.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org,
Paolo Bonzini <pbonzini@redhat.com>,
Sven Schnelle <svens@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>
Subject: Re: [PATCH v2 01/11] s390/uaccess: Add copy_from/to_user_key functions
Date: Mon, 7 Feb 2022 20:24:37 +0100 [thread overview]
Message-ID: <YgFx9XIWvrPAeSNk@osiris> (raw)
In-Reply-To: <20220207165930.1608621-2-scgl@linux.ibm.com>
On Mon, Feb 07, 2022 at 05:59:20PM +0100, Janis Schoetterl-Glausch wrote:
> Add copy_from/to_user_key functions, which perform storage key checking.
> These functions can be used by KVM for emulating instructions that need
> to be key checked.
> These functions differ from their non _key counterparts in
> include/linux/uaccess.h only in the additional key argument and must be
> kept in sync with those.
>
> Since the existing uaccess implementation on s390 makes use of move
> instructions that support having an additional access key supplied,
> we can implement raw_copy_from/to_user_key by enhancing the
> existing implementation.
>
> Signed-off-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
> ---
> arch/s390/include/asm/uaccess.h | 22 +++++++++
> arch/s390/lib/uaccess.c | 81 +++++++++++++++++++++++++--------
> 2 files changed, 85 insertions(+), 18 deletions(-)
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Christian, Janosch, I think this can go via the kvm tree.
next prev parent reply other threads:[~2022-02-07 19:28 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-07 16:59 [PATCH v2 00/11] KVM: s390: Do storage key checking Janis Schoetterl-Glausch
2022-02-07 16:59 ` [PATCH v2 01/11] s390/uaccess: Add copy_from/to_user_key functions Janis Schoetterl-Glausch
2022-02-07 19:24 ` Heiko Carstens [this message]
2022-02-08 9:41 ` Janosch Frank
2022-02-08 12:31 ` Christian Borntraeger
2022-02-08 13:16 ` Christian Borntraeger
2022-02-07 16:59 ` [PATCH v2 02/11] KVM: s390: Honor storage keys when accessing guest memory Janis Schoetterl-Glausch
2022-02-08 14:02 ` Christian Borntraeger
2022-02-08 14:36 ` Janis Schoetterl-Glausch
2022-02-07 16:59 ` [PATCH v2 03/11] KVM: s390: handle_tprot: Honor storage keys Janis Schoetterl-Glausch
2022-02-07 16:59 ` [PATCH v2 04/11] KVM: s390: selftests: Test TEST PROTECTION emulation Janis Schoetterl-Glausch
2022-02-08 12:43 ` Janosch Frank
2022-02-07 16:59 ` [PATCH v2 05/11] KVM: s390: Add optional storage key checking to MEMOP IOCTL Janis Schoetterl-Glausch
2022-02-09 7:34 ` Christian Borntraeger
2022-02-09 8:49 ` Janis Schoetterl-Glausch
2022-02-09 9:08 ` Christian Borntraeger
2022-02-09 9:34 ` Christian Borntraeger
2022-02-09 13:16 ` Konstantin Ryabitsev
2022-02-09 13:20 ` Christian Borntraeger
2022-02-09 10:01 ` Janis Schoetterl-Glausch
2022-02-09 10:08 ` Christian Borntraeger
2022-02-09 10:39 ` Janis Schoetterl-Glausch
2022-02-09 10:48 ` Christian Borntraeger
2022-02-09 11:04 ` Janis Schoetterl-Glausch
2022-02-09 12:11 ` Christian Borntraeger
2022-02-09 13:08 ` Janis Schoetterl-Glausch
2022-02-09 13:11 ` Christian Borntraeger
2022-02-07 16:59 ` [PATCH v2 06/11] KVM: s390: Add vm IOCTL for key checked guest absolute memory access Janis Schoetterl-Glausch
2022-02-07 16:59 ` [PATCH v2 07/11] KVM: s390: Rename existing vcpu memop functions Janis Schoetterl-Glausch
2022-02-07 16:59 ` [PATCH v2 08/11] KVM: s390: selftests: Test memops with storage keys Janis Schoetterl-Glausch
2022-02-07 16:59 ` [PATCH v2 09/11] KVM: s390: Add capability for storage key extension of MEM_OP IOCTL Janis Schoetterl-Glausch
2022-02-08 9:50 ` Janosch Frank
2022-02-07 16:59 ` [PATCH v2 10/11] KVM: s390: selftests: Make use of capability in MEM_OP test Janis Schoetterl-Glausch
2022-02-07 16:59 ` [PATCH v2 11/11] KVM: s390: Update api documentation for memop ioctl Janis Schoetterl-Glausch
2022-02-08 9:49 ` Janosch Frank
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