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KVM: PPC: Book3S HV: Introduce new capability for 2nd DAWR

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Introduce KVM_CAP_PPC_DAWR1 which can be used by QEMU to query whether
KVM supports 2nd DAWR or not. The capability is by default disabled
even when the underlying CPU supports 2nd DAWR. QEMU needs to check
and enable it manually to use the feature.

Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
This commit is contained in:
Ravi Bangoria
2020-12-16 16:12:19 +05:30
committed by Paul Mackerras
parent bd1de1a0e6
commit d9a47edabc
6 changed files with 35 additions and 0 deletions
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include/uapi/linux/kvm.h
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@@ -1077,6 +1077,7 @@ struct kvm_ppc_resize_hpt {
#define KVM_CAP_SYS_HYPERV_CPUID 191
#define KVM_CAP_DIRTY_LOG_RING 192
#define KVM_CAP_X86_BUS_LOCK_EXIT 193
#define KVM_CAP_PPC_DAWR1 194
#ifdef KVM_CAP_IRQ_ROUTING