This follows efi_mem_attributes(), as it's similarly generic.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
---
arch/x86/platform/efi/efi.c | 19 -------------------
drivers/firmware/efi/efi.c | 29 +++++++++++++++++++++++++++++
2 files changed, 29 insertions(+), 19 deletions(-)
--- 4.13-rc6-EFI.orig/arch/x86/platform/efi/efi.c
+++ 4.13-rc6-EFI/arch/x86/platform/efi/efi.c
@@ -1032,25 +1032,6 @@ void __init efi_enter_virtual_mode(void)
efi_dump_pagetable();
}
-/*
- * Convenience functions to obtain memory types and attributes
- */
-u32 efi_mem_type(unsigned long phys_addr)
-{
- efi_memory_desc_t *md;
-
- if (!efi_enabled(EFI_MEMMAP))
- return 0;
-
- for_each_efi_memory_desc(md) {
- if ((md->phys_addr <= phys_addr) &&
- (phys_addr < (md->phys_addr +
- (md->num_pages << EFI_PAGE_SHIFT))))
- return md->type;
- }
- return 0;
-}
-
static int __init arch_parse_efi_cmdline(char *str)
{
if (!str) {
--- 4.13-rc6-EFI.orig/drivers/firmware/efi/efi.c
+++ 4.13-rc6-EFI/drivers/firmware/efi/efi.c
@@ -819,6 +819,35 @@ u64 __weak efi_mem_attributes(unsigned l
return 0;
}
+/*
+ * efi_mem_type - lookup memmap type for physical address
+ * @phys_addr: the physical address to lookup
+ *
+ * Search in the EFI memory map for the region covering @phys_addr.
+ * Returns the EFI memory type if the region was found in the memory
+ * map, EFI_RESERVED_TYPE (zero) otherwise.
+ *
+ * Despite being marked __weak, most architectures should *not*
+ * override this function. It is __weak solely for the benefit
+ * of ia64 which has a funky EFI memory map that doesn't work
+ * the same way as other architectures.
+ */
+u32 __weak efi_mem_type(unsigned long phys_addr)
+{
+ const efi_memory_desc_t *md;
+
+ if (!efi_enabled(EFI_MEMMAP))
+ return 0;
+
+ for_each_efi_memory_desc(md) {
+ if ((md->phys_addr <= phys_addr) &&
+ (phys_addr < (md->phys_addr +
+ (md->num_pages << EFI_PAGE_SHIFT))))
+ return md->type;
+ }
+ return EFI_RESERVED_TYPE;
+}
+
int efi_status_to_err(efi_status_t status)
{
int err;
--
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