Merge tag 's390-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Heiko Carstens:

 - Add support for function error injection.

 - Add support for custom exception handlers, as required by
   BPF_PROBE_MEM.

 - Add support for BPF_PROBE_MEM.

 - Add trace events for idle enter / exit for the s390 specific idle
   implementation.

 - Remove unused zcore memmmap device.

 - Remove unused "raw view" from s390 debug feature.

 - AP bus + zcrypt device driver code refactoring.

 - Provide cex4 cca sysfs attributes for cex3 for zcrypt device driver.

 - Expose only minimal interface to walk physmem for mm/memblock. This
   is a common code change and it has been agreed on with Mike Rapoport
   and Andrew Morton that this can go upstream via the s390 tree.

 - Rework of the s390 vmem/vmmemap code to allow for future memory hot
   remove.

 - Get rid of FORCE_MAX_ZONEORDER to finally allow for order-10
   allocations again, instead of only order-8 allocations.

 - Various small improvements and fixes.

* tag 's390-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (48 commits)
  s390/vmemmap: coding style updates
  s390/vmemmap: avoid memset(PAGE_UNUSED) when adding consecutive sections
  s390/vmemmap: remember unused sub-pmd ranges
  s390/vmemmap: fallback to PTEs if mapping large PMD fails
  s390/vmem: cleanup empty page tables
  s390/vmemmap: take the vmem_mutex when populating/freeing
  s390/vmemmap: cleanup when vmemmap_populate() fails
  s390/vmemmap: extend modify_pagetable() to handle vmemmap
  s390/vmem: consolidate vmem_add_range() and vmem_remove_range()
  s390/vmem: rename vmem_add_mem() to vmem_add_range()
  s390: enable HAVE_FUNCTION_ERROR_INJECTION
  s390/pci: clarify comment in s390_mmio_read/write
  s390/time: improve comparison for tod steering
  s390/time: select CLOCKSOURCE_VALIDATE_LAST_CYCLE
  s390/time: use CLOCKSOURCE_MASK
  s390/bpf: implement BPF_PROBE_MEM
  s390/kernel: expand exception table logic to allow new handling options
  s390/kernel: unify EX_TABLE* implementations
  s390/mm: allow order 10 allocations
  s390/mm: avoid trimming to MAX_ORDER
  ...

1 files changed, 24 insertions, 4 deletions

diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 017fae833d4a..9d925db0d355 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -77,16 +77,12 @@ struct memblock_type {
  * @current_limit: physical address of the current allocation limit
  * @memory: usable memory regions
  * @reserved: reserved memory regions
- * @physmem: all physical memory
  */
 struct memblock {
 	bool bottom_up;  /* is bottom up direction? */
 	phys_addr_t current_limit;
 	struct memblock_type memory;
 	struct memblock_type reserved;
-#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP
-	struct memblock_type physmem;
-#endif
 };
 
 extern struct memblock memblock;
@@ -145,6 +141,30 @@ void __next_reserved_mem_region(u64 *idx, phys_addr_t *out_start,
 
 void __memblock_free_late(phys_addr_t base, phys_addr_t size);
 
+#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP
+static inline void __next_physmem_range(u64 *idx, struct memblock_type *type,
+					phys_addr_t *out_start,
+					phys_addr_t *out_end)
+{
+	extern struct memblock_type physmem;
+
+	__next_mem_range(idx, NUMA_NO_NODE, MEMBLOCK_NONE, &physmem, type,
+			 out_start, out_end, NULL);
+}
+
+/**
+ * for_each_physmem_range - iterate through physmem areas not included in type.
+ * @i: u64 used as loop variable
+ * @type: ptr to memblock_type which excludes from the iteration, can be %NULL
+ * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
+ * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
+ */
+#define for_each_physmem_range(i, type, p_start, p_end)			\
+	for (i = 0, __next_physmem_range(&i, type, p_start, p_end);	\
+	     i != (u64)ULLONG_MAX;					\
+	     __next_physmem_range(&i, type, p_start, p_end))
+#endif /* CONFIG_HAVE_MEMBLOCK_PHYS_MAP */
+
 /**
  * for_each_mem_range - iterate through memblock areas from type_a and not
  * included in type_b. Or just type_a if type_b is NULL.