From: Tony Krowiak <akrowiak@linux.vnet.ibm.com>
To: 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, pmorel@linux.vnet.ibm.com,
alifm@linux.vnet.ibm.com, mjrosato@linux.vnet.ibm.com,
jjherne@linux.vnet.ibm.com, thuth@redhat.com,
pasic@linux.vnet.ibm.com, fiuczy@linux.vnet.ibm.com,
buendgen@de.ibm.com, Tony Krowiak <akrowiak@linux.vnet.ibm.com>
Subject: [PATCH v2 04/15] KVM: s390: CPU model support for AP virtualization
Date: Tue, 27 Feb 2018 09:28:02 -0500 [thread overview]
Message-ID: <1519741693-17440-5-git-send-email-akrowiak@linux.vnet.ibm.com> (raw)
In-Reply-To: <1519741693-17440-1-git-send-email-akrowiak@linux.vnet.ibm.com>
Introduces a new CPU model feature and two CPU model
facilities to support AP virtualization for KVM guests.
CPU model feature:
The KVM_S390_VM_CPU_FEAT_AP feature indicates that the
AP facilities are installed on the KVM guest. This
feature will be enabled by the kernel only if the AP
facilities are installed on the linux host. This feature
must be specifically turned on for the KVM guest from
userspace to allow guest access to AP devices installed
on the linux host.
CPU model facilities:
1. AP Query Configuration Information (QCI) facility is installed.
This is indicated by setting facilities bit 12 for
the guest. The kernel will not enable this facility
for the guest if it is not set on the host. This facility
must not be set by userspace if the KVM_S390_VM_CPU_FEAT_AP
feature is not installed.
2. AP Facilities Test facility (APFT) is installed.
This is indicated by setting facilities bit 15 for
the guest. The kernel will not enable this facility for
the guest if it is not set on the host. This facility
must not be set by userspace if the KVM_S390_VM_CPU_FEAT_AP
feature is not installed.
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Signed-off-by: Tony Krowiak <akrowiak@linux.vnet.ibm.com>
---
arch/s390/include/uapi/asm/kvm.h | 1 +
arch/s390/kvm/kvm-s390.c | 4 ++++
arch/s390/tools/gen_facilities.c | 2 ++
3 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/arch/s390/include/uapi/asm/kvm.h b/arch/s390/include/uapi/asm/kvm.h
index 4cdaa55..a580dec 100644
--- a/arch/s390/include/uapi/asm/kvm.h
+++ b/arch/s390/include/uapi/asm/kvm.h
@@ -130,6 +130,7 @@ struct kvm_s390_vm_cpu_machine {
#define KVM_S390_VM_CPU_FEAT_PFMFI 11
#define KVM_S390_VM_CPU_FEAT_SIGPIF 12
#define KVM_S390_VM_CPU_FEAT_KSS 13
+#define KVM_S390_VM_CPU_FEAT_AP 14
struct kvm_s390_vm_cpu_feat {
__u64 feat[16];
};
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index de1e299..c68ca86 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -347,6 +347,10 @@ static void kvm_s390_cpu_feat_init(void)
if (MACHINE_HAS_ESOP)
allow_cpu_feat(KVM_S390_VM_CPU_FEAT_ESOP);
+
+ if (ap_instructions_installed()) /* AP instructions installed on host */
+ allow_cpu_feat(KVM_S390_VM_CPU_FEAT_AP);
+
/*
* We need SIE support, ESOP (PROT_READ protection for gmap_shadow),
* 64bit SCAO (SCA passthrough) and IDTE (for gmap_shadow unshadowing).
diff --git a/arch/s390/tools/gen_facilities.c b/arch/s390/tools/gen_facilities.c
index 90a8c9e..a52290b 100644
--- a/arch/s390/tools/gen_facilities.c
+++ b/arch/s390/tools/gen_facilities.c
@@ -106,6 +106,8 @@ struct facility_def {
.name = "FACILITIES_KVM_CPUMODEL",
.bits = (int[]){
+ 12, /* AP Query Configuration Information */
+ 15, /* AP Facilities Test */
-1 /* END */
}
},
--
1.7.1
next prev parent reply other threads:[~2018-02-27 14:32 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-27 14:27 [PATCH v2 00/15] s390: vfio-ap: guest dedicated crypto adapters Tony Krowiak
2018-02-27 14:27 ` [PATCH v2 01/15] KVM: s390: refactor crypto initialization Tony Krowiak
2018-02-28 17:37 ` Cornelia Huck
2018-02-28 21:23 ` Tony Krowiak
2018-03-01 9:59 ` Cornelia Huck
2018-03-14 16:02 ` Tony Krowiak
2018-02-27 14:28 ` [PATCH v2 02/15] s390: vsie: implement AP support for second level guest Tony Krowiak
2018-02-28 9:39 ` David Hildenbrand
2018-02-28 10:03 ` Pierre Morel
2018-02-27 14:28 ` [PATCH v2 03/15] s390: zcrypt: externalize AP instructions available function Tony Krowiak
2018-02-28 11:40 ` Harald Freudenberger
2018-02-28 17:41 ` Cornelia Huck
2018-03-01 8:38 ` Harald Freudenberger
2018-02-27 14:28 ` Tony Krowiak [this message]
2018-02-28 9:48 ` [PATCH v2 04/15] KVM: s390: CPU model support for AP virtualization David Hildenbrand
2018-02-28 11:40 ` Christian Borntraeger
2018-02-28 11:58 ` David Hildenbrand
2018-02-28 15:59 ` Tony Krowiak
2018-02-27 14:28 ` [PATCH v2 05/15] s390: vfio-ap: base implementation of VFIO AP device driver Tony Krowiak
2018-02-28 15:33 ` Pierre Morel
2018-02-28 16:43 ` Tony Krowiak
2018-02-28 18:10 ` Cornelia Huck
2018-02-28 20:34 ` Tony Krowiak
2018-02-27 14:28 ` [PATCH v2 06/15] s390: vfio-ap: register matrix device with VFIO mdev framework Tony Krowiak
2018-02-27 14:28 ` [PATCH v2 07/15] KVM: s390: Interfaces to configure/deconfigure guest's AP matrix Tony Krowiak
2018-02-28 16:15 ` Pierre Morel
2018-02-28 19:11 ` Tony Krowiak
2018-02-28 18:50 ` Tony Krowiak
2018-02-28 19:38 ` Tony Krowiak
2018-03-08 23:03 ` Tony Krowiak
2018-02-27 14:28 ` [PATCH v2 08/15] KVM: s390: interface to enable AP execution mode Tony Krowiak
2018-02-28 9:42 ` David Hildenbrand
2018-02-28 20:37 ` Tony Krowiak
2018-03-01 9:32 ` David Hildenbrand
2018-02-28 9:44 ` David Hildenbrand
2018-02-28 20:39 ` Tony Krowiak
2018-03-01 9:35 ` David Hildenbrand
2018-03-02 19:54 ` Tony Krowiak
2018-03-14 16:29 ` Tony Krowiak
2018-02-27 14:28 ` [PATCH v2 09/15] s390: vfio-ap: sysfs interfaces to configure adapters Tony Krowiak
2018-02-27 14:28 ` [PATCH v2 10/15] s390: vfio-ap: sysfs interfaces to configure domains Tony Krowiak
2018-02-27 14:28 ` [PATCH v2 11/15] s390: vfio-ap: sysfs interfaces to configure control domains Tony Krowiak
2018-02-27 14:28 ` [PATCH v2 12/15] s390: vfio-ap: sysfs interface to view matrix mdev matrix Tony Krowiak
2018-02-27 14:28 ` [PATCH v2 13/15] KVM: s390: Configure the guest's CRYCB Tony Krowiak
2018-02-28 9:49 ` David Hildenbrand
2018-02-28 20:45 ` Tony Krowiak
2018-03-01 9:37 ` David Hildenbrand
2018-03-01 20:42 ` Tony Krowiak
2018-03-02 10:08 ` David Hildenbrand
2018-03-02 19:48 ` Tony Krowiak
2018-02-27 14:28 ` [PATCH v2 14/15] s390: vfio-ap: implement VFIO_DEVICE_GET_INFO ioctl Tony Krowiak
2018-02-27 14:28 ` [PATCH v2 15/15] s390: doc: detailed specifications for AP virtualization Tony Krowiak
2018-02-27 15:57 ` Cornelia Huck
2018-02-27 18:12 ` Tony Krowiak
2018-02-27 14:58 ` [PATCH v2 00/15] s390: vfio-ap: guest dedicated crypto adapters Cornelia Huck
2018-02-27 15:57 ` Tony Krowiak
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