[RFC PATCH v1 39/42] kvm: arch: finalize plane hooks and kvm_arch_vcpu_create signature

[Sriram Nambakam <snambakam@linux.microsoft.com>]

Match the vm-planes-merged tree on non-x86 architectures: revert
kvm_arch_vcpu_create() to its plane-less prototype (planes attach the
vCPU to plane 0 in generic code) and add the kvm_arch_init_plane/
kvm_arch_free_plane/kvm_arch_sync_events stubs without the stray
conflict markers that the integration branch left committed.
---
 arch/arm64/include/asm/kvm_host.h   | 7 +++++++
 arch/arm64/kvm/arm.c                | 2 +-
 arch/mips/include/asm/kvm_host.h    | 6 ++++++
 arch/powerpc/include/asm/kvm_host.h | 6 ++++++
 arch/riscv/kvm/vcpu.c               | 2 +-
 arch/s390/include/asm/kvm_host.h    | 6 ++++++
 6 files changed, 27 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index d3807b6535cc..75b4e52c4bac 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -237,6 +237,9 @@ struct kvm_s2_mmu {
 struct kvm_arch_memory_slot {
 };
 
+struct kvm_arch_plane {
+};
+
 /**
  * struct kvm_smccc_features: Descriptor of the hypercall services exposed to the guests
  *
@@ -1441,6 +1444,10 @@ static inline bool kvm_system_needs_idmapped_vectors(void)
 	return cpus_have_final_cap(ARM64_SPECTRE_V3A);
 }
 
+static inline void kvm_arch_init_plane(struct kvm_plane *plane) {}
+static inline void kvm_arch_free_plane(struct kvm_plane *plane) {}
+static inline void kvm_arch_sync_events(struct kvm *kvm) {}
+
 void kvm_init_host_debug_data(void);
 void kvm_debug_init_vhe(void);
 void kvm_vcpu_load_debug(struct kvm_vcpu *vcpu);
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index d55be436bf16..c02e19fe2b48 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -538,7 +538,7 @@ int kvm_arch_vcpu_precreate(struct kvm *kvm, unsigned int id)
 	return 0;
 }
 
-int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu, struct kvm_plane *plane)
+int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu)
 {
 	int err;
 
diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h
index c48bca79207b..8dc465dd9ea8 100644
--- a/arch/mips/include/asm/kvm_host.h
+++ b/arch/mips/include/asm/kvm_host.h
@@ -147,6 +147,9 @@ struct kvm_vcpu_stat {
 struct kvm_arch_memory_slot {
 };
 
+struct kvm_arch_plane {
+};
+
 #ifdef CONFIG_CPU_LOONGSON64
 struct ipi_state {
 	uint32_t status;
@@ -903,6 +906,9 @@ extern unsigned long kvm_mips_get_ramsize(struct kvm *kvm);
 extern int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu,
 			     struct kvm_mips_interrupt *irq);
 
+static inline void kvm_arch_init_plane(struct kvm_plane *plane) {}
+static inline void kvm_arch_free_plane(struct kvm_plane *plane) {}
+static inline void kvm_arch_sync_events(struct kvm *kvm) {}
 static inline void kvm_arch_free_memslot(struct kvm *kvm,
 					 struct kvm_memory_slot *slot) {}
 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index 47d9900c4f85..5d7036888933 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -256,6 +256,9 @@ struct kvm_arch_memory_slot {
 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
 };
 
+struct kvm_arch_plane {
+};
+
 struct kvm_hpt_info {
 	/* Host virtual (linear mapping) address of guest HPT */
 	unsigned long virt;
@@ -919,6 +922,9 @@ struct kvm_vcpu_arch {
 #define __KVM_HAVE_ARCH_WQP
 #define __KVM_HAVE_CREATE_DEVICE
 
+static inline void kvm_arch_init_plane(struct kvm_plane *plane) {}
+static inline void kvm_arch_free_plane(struct kvm_plane *plane) {}
+static inline void kvm_arch_sync_events(struct kvm *kvm) {}
 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
diff --git a/arch/riscv/kvm/vcpu.c b/arch/riscv/kvm/vcpu.c
index f618cd83d19a..4d7ee4059758 100644
--- a/arch/riscv/kvm/vcpu.c
+++ b/arch/riscv/kvm/vcpu.c
@@ -129,7 +129,7 @@ int kvm_arch_vcpu_precreate(struct kvm *kvm, unsigned int id)
 	return 0;
 }
 
-int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu, struct kvm_plane *plane)
+int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu)
 {
 	int rc;
 
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index 15c831304b51..423185a09de6 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -476,6 +476,9 @@ struct kvm_vm_stat {
 struct kvm_arch_memory_slot {
 };
 
+struct kvm_arch_plane {
+};
+
 struct s390_map_info {
 	struct list_head list;
 	__u64 guest_addr;
@@ -773,6 +776,9 @@ extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
 
 bool kvm_s390_is_gpa_in_memslot(struct kvm *kvm, gpa_t gpa);
 
+static inline void kvm_arch_init_plane(struct kvm_plane *plane) {}
+static inline void kvm_arch_free_plane(struct kvm_plane *plane) {}
+static inline void kvm_arch_sync_events(struct kvm *kvm) {}
 static inline void kvm_arch_free_memslot(struct kvm *kvm,
 					 struct kvm_memory_slot *slot) {}
 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
-- 
2.55.0