iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

KVM: PPC: Book3S HV: Add KVM_CAP_PPC_RPT_INVALIDATE capability

Browse Source 
Now that we have H_RPT_INVALIDATE fully implemented, enable
support for the same via KVM_CAP_PPC_RPT_INVALIDATE KVM capability

Signed-off-by: Bharata B Rao <bharata@linux.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210621085003.904767-6-bharata@linux.ibm.com
This commit is contained in:
Bharata B Rao 2021-06-21 14:20:02 +05:30 committed by Michael Ellerman
parent 53324b51c5
commit b87cc116c7
3 changed files with 22 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
Documentation/virt/kvm/api.rst
View File

@ -6362,6 +6362,24 @@ default.
See Documentation/x86/sgx/2.Kernel-internals.rst for more details. See Documentation/x86/sgx/2.Kernel-internals.rst for more details.
7.26 KVM_CAP_PPC_RPT_INVALIDATE
-------------------------------
:Capability: KVM_CAP_PPC_RPT_INVALIDATE
:Architectures: ppc
:Type: vm
This capability indicates that the kernel is capable of handling
H_RPT_INVALIDATE hcall.
In order to enable the use of H_RPT_INVALIDATE in the guest,
user space might have to advertise it for the guest. For example,
IBM pSeries (sPAPR) guest starts using it if "hcall-rpt-invalidate" is
present in the "ibm,hypertas-functions" device-tree property.
This capability is enabled for hypervisors on platforms like POWER9
that support radix MMU.
8. Other capabilities. 8. Other capabilities.
====================== ======================

3
arch/powerpc/kvm/powerpc.c
View File

@ -682,6 +682,9 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
r = !!(hv_enabled && kvmppc_hv_ops->enable_dawr1 && r = !!(hv_enabled && kvmppc_hv_ops->enable_dawr1 &&
!kvmppc_hv_ops->enable_dawr1(NULL)); !kvmppc_hv_ops->enable_dawr1(NULL));
break; break;
case KVM_CAP_PPC_RPT_INVALIDATE:
r = 1;
break;
#endif #endif
default: default:
r = 0; r = 0;

1
include/uapi/linux/kvm.h
View File

@ -1082,6 +1082,7 @@ struct kvm_ppc_resize_hpt {
#define KVM_CAP_SGX_ATTRIBUTE 196 #define KVM_CAP_SGX_ATTRIBUTE 196
#define KVM_CAP_VM_COPY_ENC_CONTEXT_FROM 197 #define KVM_CAP_VM_COPY_ENC_CONTEXT_FROM 197
#define KVM_CAP_PTP_KVM 198 #define KVM_CAP_PTP_KVM 198
#define KVM_CAP_PPC_RPT_INVALIDATE 199
#ifdef KVM_CAP_IRQ_ROUTING #ifdef KVM_CAP_IRQ_ROUTING