The patch titled
Subject: firmware_map: make firmware_map_add_early() argument consistent with firmware_map_add_hotplug()
has been added to the -mm tree. Its filename is
firmware_map-make-firmware_map_add_early-argument-consistent-with-firmware_map_add_hotplug.patch
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From: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx>
Subject: firmware_map: make firmware_map_add_early() argument consistent with firmware_map_add_hotplug()
There are two ways to create /sys/firmware/memmap/X sysfs:
- firmware_map_add_early
When the system starts, it is calledd from e820_reserve_resources()
- firmware_map_add_hotplug
When the memory is hot plugged, it is called from add_memory()
But these functions are called without unifying value of end argument as
below:
- end argument of firmware_map_add_early() : start + size - 1
- end argument of firmware_map_add_hogplug() : start + size
The patch unifies them to "start + size". Even if applying the patch,
/sys/firmware/memmap/X/end file content does not change.
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx>
Reviewed-by: Dave Hansen <dave@xxxxxxxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/e820.c | 2 +-
drivers/firmware/memmap.c | 8 ++++----
2 files changed, 5 insertions(+), 5 deletions(-)
diff -puN arch/x86/kernel/e820.c~firmware_map-make-firmware_map_add_early-argument-consistent-with-firmware_map_add_hotplug arch/x86/kernel/e820.c
--- a/arch/x86/kernel/e820.c~firmware_map-make-firmware_map_add_early-argument-consistent-with-firmware_map_add_hotplug
+++ a/arch/x86/kernel/e820.c
@@ -944,7 +944,7 @@ void __init e820_reserve_resources(void)
for (i = 0; i < e820_saved.nr_map; i++) {
struct e820entry *entry = &e820_saved.map[i];
firmware_map_add_early(entry->addr,
- entry->addr + entry->size - 1,
+ entry->addr + entry->size,
e820_type_to_string(entry->type));
}
}
diff -puN drivers/firmware/memmap.c~firmware_map-make-firmware_map_add_early-argument-consistent-with-firmware_map_add_hotplug drivers/firmware/memmap.c
--- a/drivers/firmware/memmap.c~firmware_map-make-firmware_map_add_early-argument-consistent-with-firmware_map_add_hotplug
+++ a/drivers/firmware/memmap.c
@@ -98,7 +98,7 @@ static LIST_HEAD(map_entries);
/**
* firmware_map_add_entry() - Does the real work to add a firmware memmap entry.
* @start: Start of the memory range.
- * @end: End of the memory range (inclusive).
+ * @end: End of the memory range.
* @type: Type of the memory range.
* @entry: Pre-allocated (either kmalloc() or bootmem allocator), uninitialised
* entry.
@@ -113,7 +113,7 @@ static int firmware_map_add_entry(u64 st
BUG_ON(start > end);
entry->start = start;
- entry->end = end;
+ entry->end = end - 1;
entry->type = type;
INIT_LIST_HEAD(&entry->list);
kobject_init(&entry->kobj, &memmap_ktype);
@@ -148,7 +148,7 @@ static int add_sysfs_fw_map_entry(struct
* firmware_map_add_hotplug() - Adds a firmware mapping entry when we do
* memory hotplug.
* @start: Start of the memory range.
- * @end: End of the memory range (inclusive).
+ * @end: End of the memory range.
* @type: Type of the memory range.
*
* Adds a firmware mapping entry. This function is for memory hotplug, it is
@@ -175,7 +175,7 @@ int __meminit firmware_map_add_hotplug(u
/**
* firmware_map_add_early() - Adds a firmware mapping entry.
* @start: Start of the memory range.
- * @end: End of the memory range (inclusive).
+ * @end: End of the memory range.
* @type: Type of the memory range.
*
* Adds a firmware mapping entry. This function uses the bootmem allocator
_
Subject: Subject: firmware_map: make firmware_map_add_early() argument consistent with firmware_map_add_hotplug()
Patches currently in -mm which might be from isimatu.yasuaki@xxxxxxxxxxxxxx are
acpi_memhotplugc-fix-memory-leak-when-memory-device-is-unbound-from-the-module-acpi_memhotplug.patch
acpi_memhotplugc-free-memory-device-if-acpi_memory_enable_device-failed.patch
acpi_memhotplugc-remove-memory-info-from-list-before-freeing-it.patch
acpi_memhotplugc-dont-allow-to-eject-the-memory-device-if-it-is-being-used.patch
acpi_memhotplugc-bind-the-memory-device-when-the-driver-is-being-loaded.patch
acpi_memhotplugc-auto-bind-the-memory-device-which-is-hotplugged-before-the-driver-is-loaded.patch
firmware_map-make-firmware_map_add_early-argument-consistent-with-firmware_map_add_hotplug.patch
firmware_map-make-firmware_map_add_early-argument-consistent-with-firmware_map_add_hotplug-fix.patch
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