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Diffstat (limited to 'arch/arm64/include/asm/kvm_pkvm.h')
-rw-r--r--arch/arm64/include/asm/kvm_pkvm.h38
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/kvm_pkvm.h b/arch/arm64/include/asm/kvm_pkvm.h
index 9f4ad2a8df59..01129b0d4c68 100644
--- a/arch/arm64/include/asm/kvm_pkvm.h
+++ b/arch/arm64/include/asm/kvm_pkvm.h
@@ -9,11 +9,49 @@
#include <linux/memblock.h>
#include <asm/kvm_pgtable.h>
+/* Maximum number of VMs that can co-exist under pKVM. */
+#define KVM_MAX_PVMS 255
+
#define HYP_MEMBLOCK_REGIONS 128
+int pkvm_init_host_vm(struct kvm *kvm);
+int pkvm_create_hyp_vm(struct kvm *kvm);
+void pkvm_destroy_hyp_vm(struct kvm *kvm);
+
extern struct memblock_region kvm_nvhe_sym(hyp_memory)[];
extern unsigned int kvm_nvhe_sym(hyp_memblock_nr);
+static inline unsigned long
+hyp_vmemmap_memblock_size(struct memblock_region *reg, size_t vmemmap_entry_size)
+{
+ unsigned long nr_pages = reg->size >> PAGE_SHIFT;
+ unsigned long start, end;
+
+ start = (reg->base >> PAGE_SHIFT) * vmemmap_entry_size;
+ end = start + nr_pages * vmemmap_entry_size;
+ start = ALIGN_DOWN(start, PAGE_SIZE);
+ end = ALIGN(end, PAGE_SIZE);
+
+ return end - start;
+}
+
+static inline unsigned long hyp_vmemmap_pages(size_t vmemmap_entry_size)
+{
+ unsigned long res = 0, i;
+
+ for (i = 0; i < kvm_nvhe_sym(hyp_memblock_nr); i++) {
+ res += hyp_vmemmap_memblock_size(&kvm_nvhe_sym(hyp_memory)[i],
+ vmemmap_entry_size);
+ }
+
+ return res >> PAGE_SHIFT;
+}
+
+static inline unsigned long hyp_vm_table_pages(void)
+{
+ return PAGE_ALIGN(KVM_MAX_PVMS * sizeof(void *)) >> PAGE_SHIFT;
+}
+
static inline unsigned long __hyp_pgtable_max_pages(unsigned long nr_pages)
{
unsigned long total = 0, i;