diff options
Diffstat (limited to 'arch/powerpc/kvm/book3s_xive.h')
| -rw-r--r-- | arch/powerpc/kvm/book3s_xive.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s_xive.h b/arch/powerpc/kvm/book3s_xive.h index 382e3a56e789..86c24a4ad809 100644 --- a/arch/powerpc/kvm/book3s_xive.h +++ b/arch/powerpc/kvm/book3s_xive.h @@ -218,6 +218,17 @@ static inline struct kvmppc_xive_src_block *kvmppc_xive_find_source(struct kvmpp return xive->src_blocks[bid]; } +/* + * When the XIVE resources are allocated at the HW level, the VP + * structures describing the vCPUs of a guest are distributed among + * the chips to optimize the PowerBUS usage. For best performance, the + * guest vCPUs can be pinned to match the VP structure distribution. + * + * Currently, the VP identifiers are deduced from the vCPU id using + * the kvmppc_pack_vcpu_id() routine which is not incorrect but not + * optimal either. It VSMT is used, the result is not continuous and + * the constraints on HW resources described above can not be met. + */ static inline u32 kvmppc_xive_vp(struct kvmppc_xive *xive, u32 server) { return xive->vp_base + kvmppc_pack_vcpu_id(xive->kvm, server); @@ -290,6 +301,8 @@ extern int (*__xive_vm_h_eoi)(struct kvm_vcpu *vcpu, unsigned long xirr); */ void kvmppc_xive_disable_vcpu_interrupts(struct kvm_vcpu *vcpu); int kvmppc_xive_debug_show_queues(struct seq_file *m, struct kvm_vcpu *vcpu); +void kvmppc_xive_debug_show_sources(struct seq_file *m, + struct kvmppc_xive_src_block *sb); struct kvmppc_xive_src_block *kvmppc_xive_create_src_block( struct kvmppc_xive *xive, int irq); void kvmppc_xive_free_sources(struct kvmppc_xive_src_block *sb); |