Merge tag 'for-linus-4.20a-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel...
[muen/linux.git] / arch / x86 / xen / enlighten.c
index e996e8e744cbab90ecaca0ea17f07048465e208b..750f46ad018a0e0e500bf5dd60da2f7901a54f89 100644 (file)
@@ -10,7 +10,6 @@
 #include <xen/xen.h>
 #include <xen/features.h>
 #include <xen/page.h>
-#include <xen/interface/memory.h>
 
 #include <asm/xen/hypercall.h>
 #include <asm/xen/hypervisor.h>
@@ -346,80 +345,3 @@ void xen_arch_unregister_cpu(int num)
 }
 EXPORT_SYMBOL(xen_arch_unregister_cpu);
 #endif
-
-#ifdef CONFIG_XEN_BALLOON_MEMORY_HOTPLUG
-void __init arch_xen_balloon_init(struct resource *hostmem_resource)
-{
-       struct xen_memory_map memmap;
-       int rc;
-       unsigned int i, last_guest_ram;
-       phys_addr_t max_addr = PFN_PHYS(max_pfn);
-       struct e820_table *xen_e820_table;
-       const struct e820_entry *entry;
-       struct resource *res;
-
-       if (!xen_initial_domain())
-               return;
-
-       xen_e820_table = kmalloc(sizeof(*xen_e820_table), GFP_KERNEL);
-       if (!xen_e820_table)
-               return;
-
-       memmap.nr_entries = ARRAY_SIZE(xen_e820_table->entries);
-       set_xen_guest_handle(memmap.buffer, xen_e820_table->entries);
-       rc = HYPERVISOR_memory_op(XENMEM_machine_memory_map, &memmap);
-       if (rc) {
-               pr_warn("%s: Can't read host e820 (%d)\n", __func__, rc);
-               goto out;
-       }
-
-       last_guest_ram = 0;
-       for (i = 0; i < memmap.nr_entries; i++) {
-               if (xen_e820_table->entries[i].addr >= max_addr)
-                       break;
-               if (xen_e820_table->entries[i].type == E820_TYPE_RAM)
-                       last_guest_ram = i;
-       }
-
-       entry = &xen_e820_table->entries[last_guest_ram];
-       if (max_addr >= entry->addr + entry->size)
-               goto out; /* No unallocated host RAM. */
-
-       hostmem_resource->start = max_addr;
-       hostmem_resource->end = entry->addr + entry->size;
-
-       /*
-        * Mark non-RAM regions between the end of dom0 RAM and end of host RAM
-        * as unavailable. The rest of that region can be used for hotplug-based
-        * ballooning.
-        */
-       for (; i < memmap.nr_entries; i++) {
-               entry = &xen_e820_table->entries[i];
-
-               if (entry->type == E820_TYPE_RAM)
-                       continue;
-
-               if (entry->addr >= hostmem_resource->end)
-                       break;
-
-               res = kzalloc(sizeof(*res), GFP_KERNEL);
-               if (!res)
-                       goto out;
-
-               res->name = "Unavailable host RAM";
-               res->start = entry->addr;
-               res->end = (entry->addr + entry->size < hostmem_resource->end) ?
-                           entry->addr + entry->size : hostmem_resource->end;
-               rc = insert_resource(hostmem_resource, res);
-               if (rc) {
-                       pr_warn("%s: Can't insert [%llx - %llx) (%d)\n",
-                               __func__, res->start, res->end, rc);
-                       kfree(res);
-                       goto  out;
-               }
-       }
-
- out:
-       kfree(xen_e820_table);
-}
-#endif /* CONFIG_XEN_BALLOON_MEMORY_HOTPLUG */