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KVM: s390: Enable guest EDAT2 support

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1. Enable EDAT2 in the list of KVM facilities

2. Handle 2G frames in pfmf instruction
If we support EDAT2, we may enable handling of 2G frames if not in 24
bit mode.

3. Enable EDAT2 in sie_block
If the EDAT2 facility is available we enable GED2 mode control in the
sie_block.

Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Guenther Hutzl <hutzl@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Guenther Hutzl
2015-02-18 11:13:03 +01:00
committed by Christian Borntraeger
parent a4a4f1916a
commit 53df84f8de
3 changed files with 11 additions and 4 deletions
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8
arch/s390/kvm/priv.c
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@@ -698,10 +698,14 @@ static int handle_pfmf(struct kvm_vcpu *vcpu)
case 0x00001000:
end = (start + (1UL << 20)) & ~((1UL << 20) - 1);
break;
/* We dont support EDAT2
case 0x00002000:
/* only support 2G frame size if EDAT2 is available and we are
not in 24-bit addressing mode */
if (!test_kvm_facility(vcpu->kvm, 78) ||
psw_bits(vcpu->arch.sie_block->gpsw).eaba == PSW_AMODE_24BIT)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
end = (start + (1UL << 31)) & ~((1UL << 31) - 1);
break;*/
break;
default:
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
}