Merge branch 'master' into x86/memblock

Conflicts & resolutions:

* arch/x86/xen/setup.c

	dc91c728fd "xen: allow extra memory to be in multiple regions"
	24aa07882b "memblock, x86: Replace memblock_x86_reserve/free..."

	conflicted on xen_add_extra_mem() updates.  The resolution is
	trivial as the latter just want to replace
	memblock_x86_reserve_range() with memblock_reserve().

* drivers/pci/intel-iommu.c

	166e9278a3 "x86/ia64: intel-iommu: move to drivers/iommu/"
	5dfe8660a3 "bootmem: Replace work_with_active_regions() with..."

	conflicted as the former moved the file under drivers/iommu/.
	Resolved by applying the chnages from the latter on the moved
	file.

* mm/Kconfig

	6661672053 "memblock: add NO_BOOTMEM config symbol"
	c378ddd53f "memblock, x86: Make ARCH_DISCARD_MEMBLOCK a config option"

	conflicted trivially.  Both added config options.  Just
	letting both add their own options resolves the conflict.

* mm/memblock.c

	d1f0ece6cd "mm/memblock.c: small function definition fixes"
	ed7b56a799 "memblock: Remove memblock_memory_can_coalesce()"

	confliected.  The former updates function removed by the
	latter.  Resolution is trivial.

Signed-off-by: Tejun Heo <tj@kernel.org>

arch/x86/platform/efi/efi.c

@@ -29,6 +29,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/efi.h>
+#include <linux/export.h>
 #include <linux/bootmem.h>
 #include <linux/memblock.h>
 #include <linux/spinlock.h>
@@ -51,7 +52,17 @@
 int efi_enabled;
 EXPORT_SYMBOL(efi_enabled);
 
-struct efi efi;
+struct efi __read_mostly efi = {
+	.mps        = EFI_INVALID_TABLE_ADDR,
+	.acpi       = EFI_INVALID_TABLE_ADDR,
+	.acpi20     = EFI_INVALID_TABLE_ADDR,
+	.smbios     = EFI_INVALID_TABLE_ADDR,
+	.sal_systab = EFI_INVALID_TABLE_ADDR,
+	.boot_info  = EFI_INVALID_TABLE_ADDR,
+	.hcdp       = EFI_INVALID_TABLE_ADDR,
+	.uga        = EFI_INVALID_TABLE_ADDR,
+	.uv_systab  = EFI_INVALID_TABLE_ADDR,
+};
 EXPORT_SYMBOL(efi);
 
 struct efi_memory_map memmap;
@@ -79,26 +90,50 @@ early_param("add_efi_memmap", setup_add_efi_memmap);
 
 static efi_status_t virt_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc)
 {
-	return efi_call_virt2(get_time, tm, tc);
+	unsigned long flags;
+	efi_status_t status;
+
+	spin_lock_irqsave(&rtc_lock, flags);
+	status = efi_call_virt2(get_time, tm, tc);
+	spin_unlock_irqrestore(&rtc_lock, flags);
+	return status;
 }
 
 static efi_status_t virt_efi_set_time(efi_time_t *tm)
 {
-	return efi_call_virt1(set_time, tm);
+	unsigned long flags;
+	efi_status_t status;
+
+	spin_lock_irqsave(&rtc_lock, flags);
+	status = efi_call_virt1(set_time, tm);
+	spin_unlock_irqrestore(&rtc_lock, flags);
+	return status;
 }
 
 static efi_status_t virt_efi_get_wakeup_time(efi_bool_t *enabled,
 					     efi_bool_t *pending,
 					     efi_time_t *tm)
 {
-	return efi_call_virt3(get_wakeup_time,
-			      enabled, pending, tm);
+	unsigned long flags;
+	efi_status_t status;
+
+	spin_lock_irqsave(&rtc_lock, flags);
+	status = efi_call_virt3(get_wakeup_time,
+				enabled, pending, tm);
+	spin_unlock_irqrestore(&rtc_lock, flags);
+	return status;
 }
 
 static efi_status_t virt_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm)
 {
-	return efi_call_virt2(set_wakeup_time,
-			      enabled, tm);
+	unsigned long flags;
+	efi_status_t status;
+
+	spin_lock_irqsave(&rtc_lock, flags);
+	status = efi_call_virt2(set_wakeup_time,
+				enabled, tm);
+	spin_unlock_irqrestore(&rtc_lock, flags);
+	return status;
 }
 
 static efi_status_t virt_efi_get_variable(efi_char16_t *name,
@@ -122,7 +157,7 @@ static efi_status_t virt_efi_get_next_variable(unsigned long *name_size,
 
 static efi_status_t virt_efi_set_variable(efi_char16_t *name,
 					  efi_guid_t *vendor,
-					  unsigned long attr,
+					  u32 attr,
 					  unsigned long data_size,
 					  void *data)
 {
@@ -131,6 +166,18 @@ static efi_status_t virt_efi_set_variable(efi_char16_t *name,
 			      data_size, data);
 }
 
+static efi_status_t virt_efi_query_variable_info(u32 attr,
+						 u64 *storage_space,
+						 u64 *remaining_space,
+						 u64 *max_variable_size)
+{
+	if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
+		return EFI_UNSUPPORTED;
+
+	return efi_call_virt4(query_variable_info, attr, storage_space,
+			      remaining_space, max_variable_size);
+}
+
 static efi_status_t virt_efi_get_next_high_mono_count(u32 *count)
 {
 	return efi_call_virt1(get_next_high_mono_count, count);
@@ -145,6 +192,28 @@ static void virt_efi_reset_system(int reset_type,
 		       data_size, data);
 }
 
+static efi_status_t virt_efi_update_capsule(efi_capsule_header_t **capsules,
+					    unsigned long count,
+					    unsigned long sg_list)
+{
+	if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
+		return EFI_UNSUPPORTED;
+
+	return efi_call_virt3(update_capsule, capsules, count, sg_list);
+}
+
+static efi_status_t virt_efi_query_capsule_caps(efi_capsule_header_t **capsules,
+						unsigned long count,
+						u64 *max_size,
+						int *reset_type)
+{
+	if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
+		return EFI_UNSUPPORTED;
+
+	return efi_call_virt4(query_capsule_caps, capsules, count, max_size,
+			      reset_type);
+}
+
 static efi_status_t __init phys_efi_set_virtual_address_map(
 	unsigned long memory_map_size,
 	unsigned long descriptor_size,
@@ -164,11 +233,14 @@ static efi_status_t __init phys_efi_set_virtual_address_map(
 static efi_status_t __init phys_efi_get_time(efi_time_t *tm,
 					     efi_time_cap_t *tc)
 {
+	unsigned long flags;
 	efi_status_t status;
 
+	spin_lock_irqsave(&rtc_lock, flags);
 	efi_call_phys_prelog();
 	status = efi_call_phys2(efi_phys.get_time, tm, tc);
 	efi_call_phys_epilog();
+	spin_unlock_irqrestore(&rtc_lock, flags);
 	return status;
 }
 
@@ -666,6 +738,9 @@ void __init efi_enter_virtual_mode(void)
 	efi.get_next_high_mono_count = virt_efi_get_next_high_mono_count;
 	efi.reset_system = virt_efi_reset_system;
 	efi.set_virtual_address_map = NULL;
+	efi.query_variable_info = virt_efi_query_variable_info;
+	efi.update_capsule = virt_efi_update_capsule;
+	efi.query_capsule_caps = virt_efi_query_capsule_caps;
 	if (__supported_pte_mask & _PAGE_NX)
 		runtime_code_page_mkexec();
 	early_iounmap(memmap.map, memmap.nr_map * memmap.desc_size);

arch/x86/platform/efi/efi_32.c

@@ -25,6 +25,7 @@
 #include <linux/efi.h>
 
 #include <asm/io.h>
+#include <asm/desc.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/tlbflush.h>