Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 mm updates from Ingo Molnar:

 - Extend the memmap= boot parameter syntax to allow the redeclaration
   and dropping of existing ranges, and to support all e820 range types
   (Jan H. Schönherr)

 - Improve the W+X boot time security checks to remove false positive
   warnings on Xen (Jan Beulich)

 - Support booting as Xen PVH guest (Juergen Gross)

 - Improved 5-level paging (LA57) support, in particular it's possible
   now to have a single kernel image for both 4-level and 5-level
   hardware (Kirill A. Shutemov)

 - AMD hardware RAM encryption support (SME/SEV) fixes (Tom Lendacky)

 - Preparatory commits for hardware-encrypted RAM support on Intel CPUs.
   (Kirill A. Shutemov)

 - Improved Intel-MID support (Andy Shevchenko)

 - Show EFI page tables in page_tables debug files (Andy Lutomirski)

 - ... plus misc fixes and smaller cleanups

* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (56 commits)
  x86/cpu/tme: Fix spelling: "configuation" -> "configuration"
  x86/boot: Fix SEV boot failure from change to __PHYSICAL_MASK_SHIFT
  x86/mm: Update comment in detect_tme() regarding x86_phys_bits
  x86/mm/32: Remove unused node_memmap_size_bytes() & CONFIG_NEED_NODE_MEMMAP_SIZE logic
  x86/mm: Remove pointless checks in vmalloc_fault
  x86/platform/intel-mid: Add special handling for ACPI HW reduced platforms
  ACPI, x86/boot: Introduce the ->reduced_hw_early_init() ACPI callback
  ACPI, x86/boot: Split out acpi_generic_reduce_hw_init() and export
  x86/pconfig: Provide defines and helper to run MKTME_KEY_PROG leaf
  x86/pconfig: Detect PCONFIG targets
  x86/tme: Detect if TME and MKTME is activated by BIOS
  x86/boot/compressed/64: Handle 5-level paging boot if kernel is above 4G
  x86/boot/compressed/64: Use page table in trampoline memory
  x86/boot/compressed/64: Use stack from trampoline memory
  x86/boot/compressed/64: Make sure we have a 32-bit code segment
  x86/mm: Do not use paravirtualized calls in native_set_p4d()
  kdump, vmcoreinfo: Export pgtable_l5_enabled value
  x86/boot/compressed/64: Prepare new top-level page table for trampoline
  x86/boot/compressed/64: Set up trampoline memory
  x86/boot/compressed/64: Save and restore trampoline memory
  ...

5 files changed, 14 insertions, 10 deletions

diff --git a/include/asm-generic/5level-fixup.h b/include/asm-generic/5level-fixup.h
index dfbd9d990637..9c2e0708eb82 100644
--- a/include/asm-generic/5level-fixup.h
+++ b/include/asm-generic/5level-fixup.h
@@ -8,6 +8,7 @@
 #define P4D_SHIFT			PGDIR_SHIFT
 #define P4D_SIZE			PGDIR_SIZE
 #define P4D_MASK			PGDIR_MASK
+#define MAX_PTRS_PER_P4D		1
 #define PTRS_PER_P4D			1
 
 #define p4d_t				pgd_t
diff --git a/include/asm-generic/pgtable-nop4d.h b/include/asm-generic/pgtable-nop4d.h
index 8f22f55de17a..1a29b2a0282b 100644
--- a/include/asm-generic/pgtable-nop4d.h
+++ b/include/asm-generic/pgtable-nop4d.h
@@ -8,10 +8,11 @@
 
 typedef struct { pgd_t pgd; } p4d_t;
 
-#define P4D_SHIFT	PGDIR_SHIFT
-#define PTRS_PER_P4D	1
-#define P4D_SIZE	(1UL << P4D_SHIFT)
-#define P4D_MASK	(~(P4D_SIZE-1))
+#define P4D_SHIFT		PGDIR_SHIFT
+#define MAX_PTRS_PER_P4D	1
+#define PTRS_PER_P4D		1
+#define P4D_SIZE		(1UL << P4D_SHIFT)
+#define P4D_MASK		(~(P4D_SIZE-1))
 
 /*
  * The "pgd_xxx()" functions here are trivial for a folded two-level
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 968173ec2726..15bfb15c2fa5 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -623,6 +623,13 @@ bool acpi_gtdt_c3stop(int type);
 int acpi_arch_timer_mem_init(struct arch_timer_mem *timer_mem, int *timer_count);
 #endif
 
+#ifndef ACPI_HAVE_ARCH_GET_ROOT_POINTER
+static inline u64 acpi_arch_get_root_pointer(void)
+{
+	return 0;
+}
+#endif
+
 #else	/* !CONFIG_ACPI */
 
 #define acpi_disabled 1
diff --git a/include/linux/kasan.h b/include/linux/kasan.h
index adc13474a53b..d6459bd1376d 100644
--- a/include/linux/kasan.h
+++ b/include/linux/kasan.h
@@ -18,7 +18,7 @@ extern unsigned char kasan_zero_page[PAGE_SIZE];
 extern pte_t kasan_zero_pte[PTRS_PER_PTE];
 extern pmd_t kasan_zero_pmd[PTRS_PER_PMD];
 extern pud_t kasan_zero_pud[PTRS_PER_PUD];
-extern p4d_t kasan_zero_p4d[PTRS_PER_P4D];
+extern p4d_t kasan_zero_p4d[MAX_PTRS_PER_P4D];
 
 void kasan_populate_zero_shadow(const void *shadow_start,
 				const void *shadow_end);
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 7522a6987595..a2db4576e499 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -816,10 +816,6 @@ int local_memory_node(int node_id);
 static inline int local_memory_node(int node_id) { return node_id; };
 #endif
 
-#ifdef CONFIG_NEED_NODE_MEMMAP_SIZE
-unsigned long __init node_memmap_size_bytes(int, unsigned long, unsigned long);
-#endif
-
 /*
  * zone_idx() returns 0 for the ZONE_DMA zone, 1 for the ZONE_NORMAL zone, etc.
  */
@@ -1289,7 +1285,6 @@ struct mminit_pfnnid_cache {
 #endif
 
 void memory_present(int nid, unsigned long start, unsigned long end);
-unsigned long __init node_memmap_size_bytes(int, unsigned long, unsigned long);
 
 /*
  * If it is possible to have holes within a MAX_ORDER_NR_PAGES, then we