KVM: PPC: Convert RMA allocation into generic code

We have code to allocate big chunks of linear memory on bootup for later use.
This code is currently used for RMA allocation, but can be useful beyond that
extent.

Make it generic so we can reuse it for other stuff later.

Signed-off-by: Alexander Graf <agraf@suse.de>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Avi Kivity <avi@redhat.com>

2 files changed, 8 insertions, 7 deletions

diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index af438b1e8a3c..8221e717bbce 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -173,12 +173,13 @@ struct kvmppc_spapr_tce_table {
         struct page *pages[0];
 };
 
-struct kvmppc_rma_info {
+struct kvmppc_linear_info {
         void            *base_virt;
         unsigned long    base_pfn;
         unsigned long    npages;
         struct list_head list;
-        atomic_t         use_count;
+        atomic_t         use_count;
+        int              type;
 };
 
 /*
@@ -224,7 +225,7 @@ struct kvm_arch {
         int tlbie_lock;
         unsigned long lpcr;
         unsigned long rmor;
-        struct kvmppc_rma_info *rma;
+        struct kvmppc_linear_info *rma;
         unsigned long vrma_slb_v;
         int rma_setup_done;
         int using_mmu_notifiers;
diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h
index a61b5b5047d6..1c37a2f8d0f4 100644
--- a/arch/powerpc/include/asm/kvm_ppc.h
+++ b/arch/powerpc/include/asm/kvm_ppc.h
@@ -128,8 +128,8 @@ extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
                                 struct kvm_create_spapr_tce *args);
 extern long kvm_vm_ioctl_allocate_rma(struct kvm *kvm,
                                 struct kvm_allocate_rma *rma);
-extern struct kvmppc_rma_info *kvm_alloc_rma(void);
-extern void kvm_release_rma(struct kvmppc_rma_info *ri);
+extern struct kvmppc_linear_info *kvm_alloc_rma(void);
+extern void kvm_release_rma(struct kvmppc_linear_info *ri);
 extern int kvmppc_core_init_vm(struct kvm *kvm);
 extern void kvmppc_core_destroy_vm(struct kvm *kvm);
 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
@@ -187,13 +187,13 @@ static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
         paca[cpu].kvm_hstate.xics_phys = addr;
 }
 
-extern void kvm_rma_init(void);
+extern void kvm_linear_init(void);
 
 #else
 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
 {}
 
-static inline void kvm_rma_init(void)
+static inline void kvm_linear_init(void)
 {}
 #endif