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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2018-09-21 09:32:46 -0700
committerArd Biesheuvel <ard.biesheuvel@linaro.org>2018-09-26 12:03:57 +0200
commita23d3bb05ccbd815c79293d2207fedede0b3515d (patch)
treee6516189fd4911feabcc212e2639402f2864bb38 /include/linux/efi.h
parentb844470f22061e8cd646cb355e85d2f518b2c913 (diff)
efi: add API to reserve memory persistently across kexec reboot
Add kernel plumbing to reserve memory regions persistently on a EFI system by adding entries to the MEMRESERVE linked list. Tested-by: Jeremy Linton <jeremy.linton@arm.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Diffstat (limited to 'include/linux/efi.h')
-rw-r--r--include/linux/efi.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/efi.h b/include/linux/efi.h
index a5cb580472c5..22e4de9d3700 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -1043,6 +1043,7 @@ extern int __init efi_uart_console_only (void);
extern u64 efi_mem_desc_end(efi_memory_desc_t *md);
extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md);
extern void efi_mem_reserve(phys_addr_t addr, u64 size);
+extern int efi_mem_reserve_persistent(phys_addr_t addr, u64 size);
extern void efi_initialize_iomem_resources(struct resource *code_resource,
struct resource *data_resource, struct resource *bss_resource);
extern void efi_reserve_boot_services(void);