Merge tag 'v4.20-rc5' into for-4.21/block

Pull in v4.20-rc5, solving a conflict we'll otherwise get in aio.c and
also getting the merge fix that went into mainline that users are
hitting testing for-4.21/block and/or for-next.

* tag 'v4.20-rc5': (664 commits)
  Linux 4.20-rc5
  PCI: Fix incorrect value returned from pcie_get_speed_cap()
  MAINTAINERS: Update linux-mips mailing list address
  ocfs2: fix potential use after free
  mm/khugepaged: fix the xas_create_range() error path
  mm/khugepaged: collapse_shmem() do not crash on Compound
  mm/khugepaged: collapse_shmem() without freezing new_page
  mm/khugepaged: minor reorderings in collapse_shmem()
  mm/khugepaged: collapse_shmem() remember to clear holes
  mm/khugepaged: fix crashes due to misaccounted holes
  mm/khugepaged: collapse_shmem() stop if punched or truncated
  mm/huge_memory: fix lockdep complaint on 32-bit i_size_read()
  mm/huge_memory: splitting set mapping+index before unfreeze
  mm/huge_memory: rename freeze_page() to unmap_page()
  initramfs: clean old path before creating a hardlink
  kernel/kcov.c: mark funcs in __sanitizer_cov_trace_pc() as notrace
  psi: make disabling/enabling easier for vendor kernels
  proc: fixup map_files test on arm
  debugobjects: avoid recursive calls with kmemleak
  userfaultfd: shmem: UFFDIO_COPY: set the page dirty if VM_WRITE is not set
  ...

1 files changed, 0 insertions, 78 deletions

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index e996e8e744cb..750f46ad018a 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -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 */