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| author |   Christian Borntraeger <borntraeger@de.ibm.com> | 2018-12-28 09:33:35 +0100 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2019-04-18 10:14:11 +0200 |
| commit | 13209ad0395c4de7fa48108b1dac72e341d5c089 (patch) | |
| tree | 6bc2b5cabde383ea5c003213d3c77109dbb52214 /arch/s390 | |
| parent | KVM: s390: add vector BCD enhancements facility to cpumodel (diff) | |
| download | linux-dev-13209ad0395c4de7fa48108b1dac72e341d5c089.tar.xz linux-dev-13209ad0395c4de7fa48108b1dac72e341d5c089.zip | |
KVM: s390: add MSA9 to cpumodel
This enables stfle.155 and adds the subfunctions for KDSA. Bit 155 is
added to the list of facilities that will be enabled when there is no
cpu model involved as MSA9 requires no additional handling from
userspace, e.g. for migration.
Please note that a cpu model enabled user space can and will have the
final decision on the facility bits for a guests.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Collin Walling <walling@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/cpacf.h | 1 | ||||
| -rw-r--r-- | arch/s390/include/uapi/asm/kvm.h | 3 | ||||
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 13 | ||||
| -rw-r--r-- | arch/s390/tools/gen_facilities.c | 1 |
4 files changed, 17 insertions, 1 deletions
diff --git a/arch/s390/include/asm/cpacf.h b/arch/s390/include/asm/cpacf.h index 3cc52e37b4b2..ce2770743cc5 100644 --- a/arch/s390/include/asm/cpacf.h +++ b/arch/s390/include/asm/cpacf.h @@ -28,6 +28,7 @@ #define CPACF_KMCTR 0xb92d /* MSA4 */ #define CPACF_PRNO 0xb93c /* MSA5 */ #define CPACF_KMA 0xb929 /* MSA8 */ +#define CPACF_KDSA 0xb93a /* MSA9 */ /* * En/decryption modifier bits diff --git a/arch/s390/include/uapi/asm/kvm.h b/arch/s390/include/uapi/asm/kvm.h index 16511d97e8dc..09652eabe769 100644 --- a/arch/s390/include/uapi/asm/kvm.h +++ b/arch/s390/include/uapi/asm/kvm.h @@ -152,7 +152,8 @@ struct kvm_s390_vm_cpu_subfunc { __u8 pcc[16]; /* with MSA4 */ __u8 ppno[16]; /* with MSA5 */ __u8 kma[16]; /* with MSA8 */ - __u8 reserved[1808]; + __u8 kdsa[16]; /* with MSA9 */ + __u8 reserved[1792]; }; /* kvm attributes for crypto */ diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index d3f3e63bb164..0dad61ccde3d 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -368,6 +368,10 @@ static void kvm_s390_cpu_feat_init(void) __cpacf_query(CPACF_KMA, (cpacf_mask_t *) kvm_s390_available_subfunc.kma); + if (test_facility(155)) /* MSA9 */ + __cpacf_query(CPACF_KDSA, (cpacf_mask_t *) + kvm_s390_available_subfunc.kdsa); + if (MACHINE_HAS_ESOP) allow_cpu_feat(KVM_S390_VM_CPU_FEAT_ESOP); /* @@ -1331,6 +1335,9 @@ static int kvm_s390_set_processor_subfunc(struct kvm *kvm, VM_EVENT(kvm, 3, "SET: guest KMA subfunc 0x%16.16lx.%16.16lx", ((unsigned long *) &kvm->arch.model.subfuncs.kma)[0], ((unsigned long *) &kvm->arch.model.subfuncs.kma)[1]); + VM_EVENT(kvm, 3, "SET: guest KDSA subfunc 0x%16.16lx.%16.16lx", + ((unsigned long *) &kvm->arch.model.subfuncs.kdsa)[0], + ((unsigned long *) &kvm->arch.model.subfuncs.kdsa)[1]); return 0; } @@ -1499,6 +1506,9 @@ static int kvm_s390_get_processor_subfunc(struct kvm *kvm, VM_EVENT(kvm, 3, "GET: guest KMA subfunc 0x%16.16lx.%16.16lx", ((unsigned long *) &kvm->arch.model.subfuncs.kma)[0], ((unsigned long *) &kvm->arch.model.subfuncs.kma)[1]); + VM_EVENT(kvm, 3, "GET: guest KDSA subfunc 0x%16.16lx.%16.16lx", + ((unsigned long *) &kvm->arch.model.subfuncs.kdsa)[0], + ((unsigned long *) &kvm->arch.model.subfuncs.kdsa)[1]); return 0; } @@ -1554,6 +1564,9 @@ static int kvm_s390_get_machine_subfunc(struct kvm *kvm, VM_EVENT(kvm, 3, "GET: host KMA subfunc 0x%16.16lx.%16.16lx", ((unsigned long *) &kvm_s390_available_subfunc.kma)[0], ((unsigned long *) &kvm_s390_available_subfunc.kma)[1]); + VM_EVENT(kvm, 3, "GET: host KDSA subfunc 0x%16.16lx.%16.16lx", + ((unsigned long *) &kvm_s390_available_subfunc.kdsa)[0], + ((unsigned long *) &kvm_s390_available_subfunc.kdsa)[1]); return 0; } diff --git a/arch/s390/tools/gen_facilities.c b/arch/s390/tools/gen_facilities.c index fd788e0f2e5b..e952cb3b75b2 100644 --- a/arch/s390/tools/gen_facilities.c +++ b/arch/s390/tools/gen_facilities.c @@ -93,6 +93,7 @@ static struct facility_def facility_defs[] = { 131, /* enhanced-SOP 2 and side-effect */ 139, /* multiple epoch facility */ 146, /* msa extension 8 */ + 155, /* msa extension 9 */ -1 /* END */ } }, |