KVM: s390: represent SIMD cap in kvm facility

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The patch represents capability KVM_CAP_S390_VECTOR_REGISTERS by means
of the SIMD facility bit. This allows to a) disable the use of SIMD when
used in conjunction with a not-SIMD-aware QEMU, b) to enable SIMD when
used with a SIMD-aware version of QEMU and c) finally by means of a QEMU
version using the future cpu model ioctls.

Signed-off-by: Michael Mueller <mimu@linux.vnet.ibm.com>
Reviewed-by: Eric Farman <farman@linux.vnet.ibm.com>
Tested-by: Eric Farman <farman@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

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Michael Mueller 2015-03-16 16:05:41 +01:00 • committed by Christian Borntraeger

parent 400ac6cd73

commit 18280d8b4b

3 changed files with 22 additions and 9 deletions

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1

arch/s390/include/asm/kvm_host.h

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19

arch/s390/kvm/kvm-s390.c

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11

arch/s390/kvm/kvm-s390.h

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