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ppc/spapr_caps: Add SPAPR_CAP_NESTED_KVM_HV

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Add the spapr cap SPAPR_CAP_NESTED_KVM_HV to be used to control the
availability of nested kvm-hv to the level 1 (L1) guest.

Assuming a hypervisor with support enabled an L1 guest can be allowed to
use the kvm-hv module (and thus run it's own kvm-hv guests) by setting:
-machine pseries,cap-nested-hv=true
or disabled with:
-machine pseries,cap-nested-hv=false

Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Suraj Jitindar Singh 2018-10-08 14:25:39 +11:00 • committed by David Gibson
parent 56de52cad9
commit b9a477b725
5 changed files with 62 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

12
target/ppc/kvm_ppc.h
View file

@ -62,6 +62,8 @@ bool kvmppc_has_cap_mmu_hash_v3(void);
int kvmppc_get_cap_safe_cache(void);
int kvmppc_get_cap_safe_bounds_check(void);
int kvmppc_get_cap_safe_indirect_branch(void);
bool kvmppc_has_cap_nested_kvm_hv(void);
int kvmppc_set_cap_nested_kvm_hv(int enable);
int kvmppc_enable_hwrng(void);
int kvmppc_put_books_sregs(PowerPCCPU *cpu);
PowerPCCPUClass *kvm_ppc_get_host_cpu_class(void);
@ -320,6 +322,16 @@ static inline int kvmppc_get_cap_safe_indirect_branch(void)
return 0;
}
static inline bool kvmppc_has_cap_nested_kvm_hv(void)
{
return false;
}
static inline int kvmppc_set_cap_nested_kvm_hv(int enable)
{
return -1;
}
static inline int kvmppc_enable_hwrng(void)
{
return -1;