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| author | Eric Farman <farman@linux.vnet.ibm.com> | 2014-04-30 13:39:46 -0400 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2015-03-06 13:49:35 +0100 |
| commit | 13211ea7b47db3d8ee2ff258a9a973a6d3aa3d43 (patch) | |
| tree | bbaabf7f0ff3f8df71c38c0d507315b2aed14993 /arch/s390/kvm/kvm-s390.c | |
| parent | bc17de7c966504b287a1dceb76a523d8b7816731 (diff) | |
| download | lwn-13211ea7b47db3d8ee2ff258a9a973a6d3aa3d43.tar.gz lwn-13211ea7b47db3d8ee2ff258a9a973a6d3aa3d43.zip | |
KVM: s390: Enable vector support for capable guest
We finally have all the pieces in place, so let's include the
vector facility bit in the mask of available hardware facilities
for the guest to recognize. Also, enable the vector functionality
in the guest control blocks, to avoid a possible vector data
exception that would otherwise occur when a vector instruction
is issued by the guest operating system.
Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm/kvm-s390.c')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 0c045cfdce9b..02e03c862a60 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -104,6 +104,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { unsigned long kvm_s390_fac_list_mask[] = { 0xff82fffbf4fc2000UL, 0x005c000000000000UL, + 0x4000000000000000UL, }; unsigned long kvm_s390_fac_list_mask_size(void) @@ -1186,6 +1187,10 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) vcpu->arch.sie_block->eca |= 1; if (sclp_has_sigpif()) vcpu->arch.sie_block->eca |= 0x10000000U; + if (vcpu->kvm->arch.use_vectors) { + vcpu->arch.sie_block->eca |= 0x00020000; + vcpu->arch.sie_block->ecd |= 0x20000000; + } vcpu->arch.sie_block->ictl |= ICTL_ISKE | ICTL_SSKE | ICTL_RRBE; if (kvm_s390_cmma_enabled(vcpu->kvm)) { |