Register the new memslot with UV during plug and unregister the memslot
during unplug.
Signed-off-by: Bharata B Rao <bharata@xxxxxxxxxxxxx>
---
arch/powerpc/include/asm/kvm_ppc.h | 6 ++++--
arch/powerpc/include/asm/ucall-api.h | 5 +++++
arch/powerpc/kvm/book3s.c | 5 +++--
arch/powerpc/kvm/book3s_hv.c | 23 ++++++++++++++++++++++-
arch/powerpc/kvm/book3s_pr.c | 3 ++-
arch/powerpc/kvm/powerpc.c | 2 +-
6 files changed, 37 insertions(+), 7 deletions(-)
diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h
index ba81a07e2bdf..2f0d7c64eb18 100644
--- a/arch/powerpc/include/asm/kvm_ppc.h
+++ b/arch/powerpc/include/asm/kvm_ppc.h
@@ -226,7 +226,8 @@ extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
const struct kvm_userspace_memory_region *mem,
const struct kvm_memory_slot *old,
- const struct kvm_memory_slot *new);
+ const struct kvm_memory_slot *new,
+ enum kvm_mr_change change);
extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm,
struct kvm_ppc_smmu_info *info);
extern void kvmppc_core_flush_memslot(struct kvm *kvm,
@@ -296,7 +297,8 @@ struct kvmppc_ops {
void (*commit_memory_region)(struct kvm *kvm,
const struct kvm_userspace_memory_region *mem,
const struct kvm_memory_slot *old,
- const struct kvm_memory_slot *new);
+ const struct kvm_memory_slot *new,
+ enum kvm_mr_change change);
int (*unmap_hva_range)(struct kvm *kvm, unsigned long start,
unsigned long end);
int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end);
diff --git a/arch/powerpc/include/asm/ucall-api.h b/arch/powerpc/include/asm/ucall-api.h
index 9ddfcf541211..652797184b86 100644
--- a/arch/powerpc/include/asm/ucall-api.h
+++ b/arch/powerpc/include/asm/ucall-api.h
@@ -23,4 +23,9 @@ static inline int uv_register_mem_slot(u64 lpid, u64 dw0, u64 dw1, u64 dw2,
return 0;
}
+static inline int uv_unregister_mem_slot(u64 lpid, u64 dw0)
+{
+ return 0;
+}
+
#endif /* _ASM_POWERPC_UCALL_API_H */
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index 87348e498c89..15ddae43849d 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -804,9 +804,10 @@ int kvmppc_core_prepare_memory_region(struct kvm *kvm,
void kvmppc_core_commit_memory_region(struct kvm *kvm,
const struct kvm_userspace_memory_region *mem,
const struct kvm_memory_slot *old,
- const struct kvm_memory_slot *new)
+ const struct kvm_memory_slot *new,
+ enum kvm_mr_change change)
{
- kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old, new);
+ kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old, new, change);
}
int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 47f366f634fd..5f20c37a59b2 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -3729,7 +3729,8 @@ static int kvmppc_core_prepare_memory_region_hv(struct kvm *kvm,
static void kvmppc_core_commit_memory_region_hv(struct kvm *kvm,
const struct kvm_userspace_memory_region *mem,
const struct kvm_memory_slot *old,
- const struct kvm_memory_slot *new)
+ const struct kvm_memory_slot *new,
+ enum kvm_mr_change change)
{
unsigned long npages = mem->memory_size >> PAGE_SHIFT;
@@ -3741,6 +3742,26 @@ static void kvmppc_core_commit_memory_region_hv(struct kvm *kvm,
*/
if (npages)
atomic64_inc(&kvm->arch.mmio_update);
+ /*
+ * If UV hasn't yet called H_SVM_INIT_START, don't register memslots.
+ */
+ if (!kvm->arch.svm_init_start)
+ return;
+
+#ifdef CONFIG_PPC_SVM
+ /*
+ * TODO: Handle KVM_MR_MOVE
+ */
+ if (change == KVM_MR_CREATE) {
+ uv_register_mem_slot(kvm->arch.lpid,
+ new->base_gfn << PAGE_SHIFT,
+ new->npages * PAGE_SIZE,
+ 0,
+ new->id);
+ } else if (change == KVM_MR_DELETE) {
+ uv_unregister_mem_slot(kvm->arch.lpid, old->id);
+ }
+#endif
}
/*
diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c
index 614ebb4261f7..844af9844a0c 100644
--- a/arch/powerpc/kvm/book3s_pr.c
+++ b/arch/powerpc/kvm/book3s_pr.c
@@ -1914,7 +1914,8 @@ static int kvmppc_core_prepare_memory_region_pr(struct kvm *kvm,
static void kvmppc_core_commit_memory_region_pr(struct kvm *kvm,
const struct kvm_userspace_memory_region *mem,
const struct kvm_memory_slot *old,
- const struct kvm_memory_slot *new)
+ const struct kvm_memory_slot *new,
+ enum kvm_mr_change change)
{
return;
}
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index eba5756d5b41..cfc6e5dcd1c5 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -691,7 +691,7 @@ void kvm_arch_commit_memory_region(struct kvm *kvm,
const struct kvm_memory_slot *new,
enum kvm_mr_change change)
{
- kvmppc_core_commit_memory_region(kvm, mem, old, new);
+ kvmppc_core_commit_memory_region(kvm, mem, old, new, change);
}
void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
--
2.17.1
