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authorTony Luck <tony.luck@intel.com>2015-06-25 02:58:15 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-06-25 03:49:45 +0300
commitb05b9f5f9dcf593a0e9327676b78e6c17b4218e8 (patch)
tree70eea2a2ccd88b528f68adb437dacb7301e266d8 /include/linux/efi.h
parenta3f5bafcc04aaf62990e0cf3ced1cc6d8dc6fe95 (diff)
downloadlinux-b05b9f5f9dcf593a0e9327676b78e6c17b4218e8.tar.xz
x86, mirror: x86 enabling - find mirrored memory ranges
UEFI GetMemoryMap() uses a new attribute bit to mark mirrored memory address ranges. See UEFI 2.5 spec pages 157-158: http://www.uefi.org/sites/default/files/resources/UEFI%202_5.pdf On EFI enabled systems scan the memory map and tell memblock about any mirrored ranges. Signed-off-by: Tony Luck <tony.luck@intel.com> Cc: Xishi Qiu <qiuxishi@huawei.com> Cc: Hanjun Guo <guohanjun@huawei.com> Cc: Xiexiuqi <xiexiuqi@huawei.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Naoya Horiguchi <nao.horiguchi@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/efi.h')
-rw-r--r--include/linux/efi.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/efi.h b/include/linux/efi.h
index 2092965afca3..5f19efe4eb3f 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -96,6 +96,8 @@ typedef struct {
#define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */
#define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */
#define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */
+#define EFI_MEMORY_MORE_RELIABLE \
+ ((u64)0x0000000000010000ULL) /* higher reliability */
#define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */
#define EFI_MEMORY_DESCRIPTOR_VERSION 1
@@ -868,6 +870,7 @@ extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if pos
extern void efi_late_init(void);
extern void efi_free_boot_services(void);
extern efi_status_t efi_query_variable_store(u32 attributes, unsigned long size);
+extern void efi_find_mirror(void);
#else
static inline void efi_late_init(void) {}
static inline void efi_free_boot_services(void) {}