From: Pierre Morel <pmorel@linux.vnet.ibm.com>
To: Tony Krowiak <akrowiak@linux.vnet.ibm.com>,
linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org,
kvm@vger.kernel.org
Cc: freude@de.ibm.com, schwidefsky@de.ibm.com,
heiko.carstens@de.ibm.com, borntraeger@de.ibm.com,
cohuck@redhat.com, kwankhede@nvidia.com,
bjsdjshi@linux.vnet.ibm.com, pbonzini@redhat.com,
alex.williamson@redhat.com, alifm@linux.vnet.ibm.com,
mjrosato@linux.vnet.ibm.com, jjherne@linux.vnet.ibm.com,
thuth@redhat.com, pasic@linux.vnet.ibm.com, berrange@redhat.com,
fiuczy@linux.vnet.ibm.com, buendgen@de.ibm.com
Subject: Re: [PATCH v3 01/14] KVM: s390: refactor crypto initialization
Date: Thu, 15 Mar 2018 13:26:40 +0100 [thread overview]
Message-ID: <f87a6adb-8982-c194-7925-0c88060ebef2@linux.vnet.ibm.com> (raw)
In-Reply-To: <1521051954-25715-2-git-send-email-akrowiak@linux.vnet.ibm.com>
On 14/03/2018 19:25, Tony Krowiak wrote:
> This patch refactors the code that initializes the crypto
> configuration for a guest. The crypto configuration is contained in
> a crypto control block (CRYCB) which is a satellite control block to
> our main hardware virtualization control block. The CRYCB is
> attached to the main virtualization control block via a CRYCB
> designation (CRYCBD) designation field containing the address of
> the CRYCB as well as its format.
>
> Prior to the introduction of AP device virtualization, there was
> no need to provide access to or specify the format of the CRYCB for
> a guest unless the MSA extension 3 (MSAX3) facility was installed
> on the host system. With the introduction of AP device virtualization,
> the CRYCB and its format must be made accessible to the guest
> regardless of the presence of the MSAX3 facility.
>
> The crypto initialization code is restructured as follows:
>
> * A new compilation unit is introduced to contain all interfaces
> and data structures related to configuring a guest's CRYCB for
> both the refactoring of crypto initialization as well as all
> subsequent patches introducing AP virtualization support.
>
> * Currently, the asm code for querying the AP configuration is
> duplicated in the AP bus as well as in KVM. Since the KVM
> code was introduced, the AP bus has externalized the interface
> for querying the AP configuration. The KVM interface will be
> replaced with a call to the AP bus interface. Of course, this
> will be moved to the new compilation unit mentioned above.
>
> * An interface to format the CRYCBD field will be provided via
> the new compilation unit and called from the KVM vm
> initialization.
>
> Signed-off-by: Tony Krowiak <akrowiak@linux.vnet.ibm.com>
> ---
> MAINTAINERS | 10 ++++++
> arch/s390/include/asm/kvm-ap.h | 16 ++++++++++
> arch/s390/include/asm/kvm_host.h | 1 +
> arch/s390/kvm/Kconfig | 1 +
> arch/s390/kvm/Makefile | 2 +-
> arch/s390/kvm/kvm-ap.c | 48 +++++++++++++++++++++++++++++
> arch/s390/kvm/kvm-s390.c | 61 ++++---------------------------------
> 7 files changed, 84 insertions(+), 55 deletions(-)
> create mode 100644 arch/s390/include/asm/kvm-ap.h
> create mode 100644 arch/s390/kvm/kvm-ap.c
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 0ec5881..72742d5 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -11875,6 +11875,16 @@ W: http://www.ibm.com/developerworks/linux/linux390/
> S: Supported
> F: drivers/s390/crypto/
>
> +S390 VFIO AP DRIVER
> +M: Tony Krowiak <akrowiak@linux.vnet.ibm.com>
> +M: Christian Borntraeger <borntraeger@de.ibm.com>
> +M: Martin Schwidefsky <schwidefsky@de.ibm.com>
> +L: linux-s390@vger.kernel.org
> +W: http://www.ibm.com/developerworks/linux/linux390/
> +S: Supported
> +F: arch/s390/include/asm/kvm/kvm-ap.h
> +F: arch/s390/kvm/kvm-ap.c
> +
> S390 ZFCP DRIVER
> M: Steffen Maier <maier@linux.vnet.ibm.com>
> M: Benjamin Block <bblock@linux.vnet.ibm.com>
> diff --git a/arch/s390/include/asm/kvm-ap.h b/arch/s390/include/asm/kvm-ap.h
> new file mode 100644
> index 0000000..362846c
> --- /dev/null
> +++ b/arch/s390/include/asm/kvm-ap.h
> @@ -0,0 +1,16 @@
> +/*
> + * Adjunct Processor (AP) configuration management for KVM guests
> + *
> + * Copyright IBM Corp. 2017
> + *
> + * Author(s): Tony Krowiak <akrowia@linux.vnet.ibm.com>
> + */
> +
> +#ifndef _ASM_KVM_AP
> +#define _ASM_KVM_AP
> +#include <linux/types.h>
> +#include <linux/kvm_host.h>
> +
> +void kvm_ap_build_crycbd(struct kvm *kvm);
> +
> +#endif /* _ASM_KVM_AP */
> diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
> index 34c9b5b..65a944e 100644
> --- a/arch/s390/include/asm/kvm_host.h
> +++ b/arch/s390/include/asm/kvm_host.h
> @@ -257,6 +257,7 @@ struct kvm_s390_sie_block {
> __u8 reservedf0[12]; /* 0x00f0 */
> #define CRYCB_FORMAT1 0x00000001
> #define CRYCB_FORMAT2 0x00000003
> +#define CRYCB_FORMAT_MASK 0x00000003
> __u32 crycbd; /* 0x00fc */
> __u64 gcr[16]; /* 0x0100 */
> __u64 gbea; /* 0x0180 */
> diff --git a/arch/s390/kvm/Kconfig b/arch/s390/kvm/Kconfig
> index a3dbd45..4ca9077 100644
> --- a/arch/s390/kvm/Kconfig
> +++ b/arch/s390/kvm/Kconfig
> @@ -33,6 +33,7 @@ config KVM
> select HAVE_KVM_INVALID_WAKEUPS
> select SRCU
> select KVM_VFIO
> + select ZCRYPT
I do not think it is a good solution to *always* enable ZCRYPT
when we have KVM.
Pierre
--
Pierre Morel
Linux/KVM/QEMU in Böblingen - Germany
next prev parent reply other threads:[~2018-03-15 12:26 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-14 18:25 [PATCH v3 00/14] s390: vfio-ap: guest dedicated crypto adapters Tony Krowiak
2018-03-14 18:25 ` [PATCH v3 01/14] KVM: s390: refactor crypto initialization Tony Krowiak
2018-03-15 12:26 ` Pierre Morel [this message]
2018-03-15 14:48 ` Tony Krowiak
2018-03-15 14:55 ` Pierre Morel
2018-03-26 8:44 ` Cornelia Huck
2018-03-29 18:57 ` Tony Krowiak
2018-04-03 11:26 ` Cornelia Huck
2018-04-05 10:42 ` Christian Borntraeger
2018-04-05 10:45 ` Christian Borntraeger
2018-04-05 13:16 ` Tony Krowiak
2018-03-14 18:25 ` [PATCH v3 02/14] s390: zcrypt: externalize AP instructions available function Tony Krowiak
2018-03-14 18:25 ` [PATCH v3 03/14] KVM: s390: CPU model support for AP virtualization Tony Krowiak
2018-03-27 10:59 ` Cornelia Huck
2018-03-27 11:22 ` Pierre Morel
2018-03-27 11:30 ` Cornelia Huck
2018-03-14 18:25 ` [PATCH v3 04/14] KVM: s390: device attribute to set AP interpretive execution Tony Krowiak
2018-03-14 21:57 ` Halil Pasic
2018-03-15 13:00 ` Pierre Morel
2018-03-15 15:26 ` Tony Krowiak
2018-03-15 15:45 ` Pierre Morel
2018-03-15 17:21 ` Tony Krowiak
2018-03-15 17:56 ` Pierre Morel
2018-03-15 23:39 ` Tony Krowiak
2018-03-16 7:51 ` Pierre Morel
2018-03-16 16:09 ` Tony Krowiak
2018-03-20 17:58 ` Tony Krowiak
2018-03-20 22:48 ` Halil Pasic
2018-04-02 18:55 ` Tony Krowiak
2018-03-15 15:23 ` Tony Krowiak
2018-03-15 16:00 ` Pierre Morel
2018-03-15 23:37 ` Tony Krowiak
2018-03-15 16:25 ` Halil Pasic
2018-03-14 18:25 ` [PATCH v3 05/14] s390: vfio-ap: base implementation of VFIO AP device driver Tony Krowiak
2018-03-15 13:25 ` Pierre Morel
2018-03-15 17:25 ` Tony Krowiak
2018-03-27 11:17 ` Cornelia Huck
2018-03-27 14:45 ` Pierre Morel
2018-04-03 9:56 ` Cornelia Huck
2018-04-03 10:57 ` Cornelia Huck
2018-04-03 13:02 ` Tony Krowiak
2018-03-14 18:25 ` [PATCH v3 06/14] s390: vfio-ap: register matrix device with VFIO mdev framework Tony Krowiak
2018-03-14 18:25 ` [PATCH v3 07/14] KVM: s390: interfaces to configure/deconfigure guest's AP matrix Tony Krowiak
2018-04-03 11:07 ` Cornelia Huck
2018-04-03 13:17 ` Tony Krowiak
2018-04-03 13:38 ` Cornelia Huck
2018-03-14 18:25 ` [PATCH v3 08/14] s390: vfio-ap: sysfs interfaces to configure adapters Tony Krowiak
2018-04-03 11:10 ` Cornelia Huck
2018-04-03 13:33 ` Tony Krowiak
2018-03-14 18:25 ` [PATCH v3 09/14] s390: vfio-ap: sysfs interfaces to configure domains Tony Krowiak
2018-04-03 11:17 ` Cornelia Huck
[not found] ` <1860430c-df59-6d58-77f9-b36c51595b4b@linux.vnet.ibm.com>
2018-04-03 15:19 ` Cornelia Huck
2018-04-03 15:42 ` Tony Krowiak
2018-03-14 18:25 ` [PATCH v3 10/14] s390: vfio-ap: sysfs interfaces to configure control domains Tony Krowiak
2018-03-14 18:25 ` [PATCH v3 11/14] s390: vfio-ap: sysfs interface to view matrix mdev matrix Tony Krowiak
2018-03-15 9:42 ` Pierre Morel
2018-03-15 14:52 ` Tony Krowiak
2018-03-15 15:35 ` Pierre Morel
2018-03-27 11:19 ` Cornelia Huck
2018-03-14 18:25 ` [PATCH v3 12/14] KVM: s390: configure the guest's AP devices Tony Krowiak
2018-03-14 18:25 ` [PATCH v3 13/14] s390: vfio-ap: implement VFIO_DEVICE_GET_INFO ioctl Tony Krowiak
2018-03-14 18:25 ` [PATCH v3 14/14] s390: doc: detailed specifications for AP virtualization Tony Krowiak
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=f87a6adb-8982-c194-7925-0c88060ebef2@linux.vnet.ibm.com \
--to=pmorel@linux.vnet.ibm.com \
--cc=akrowiak@linux.vnet.ibm.com \
--cc=alex.williamson@redhat.com \
--cc=alifm@linux.vnet.ibm.com \
--cc=berrange@redhat.com \
--cc=bjsdjshi@linux.vnet.ibm.com \
--cc=borntraeger@de.ibm.com \
--cc=buendgen@de.ibm.com \
--cc=cohuck@redhat.com \
--cc=fiuczy@linux.vnet.ibm.com \
--cc=freude@de.ibm.com \
--cc=heiko.carstens@de.ibm.com \
--cc=jjherne@linux.vnet.ibm.com \
--cc=kvm@vger.kernel.org \
--cc=kwankhede@nvidia.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-s390@vger.kernel.org \
--cc=mjrosato@linux.vnet.ibm.com \
--cc=pasic@linux.vnet.ibm.com \
--cc=pbonzini@redhat.com \
--cc=schwidefsky@de.ibm.com \
--cc=thuth@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).