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efi/runtime-map: Use efi.memmap directly instead of a copy

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Now that efi.memmap is available all of the time there's no need to
allocate and build a separate copy of the EFI memory map.

Furthermore, efi.memmap contains boot services regions but only those
regions that have been reserved via efi_mem_reserve(). Using
efi.memmap allows us to pass boot services across kexec reboot so that
the ESRT and BGRT drivers will now work.

Tested-by: Dave Young <dyoung@redhat.com> [kexec/kdump]
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> [arm]
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Peter Jones <pjones@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
This commit is contained in:
Matt Fleming
2016-03-01 23:02:56 +00:00
parent 816e76129e
commit 31ce8cc681
3 changed files with 13 additions and 66 deletions
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4
include/linux/efi.h
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@@ -1357,7 +1357,6 @@ extern int efi_capsule_update(efi_capsule_header_t *capsule,
#ifdef CONFIG_EFI_RUNTIME_MAP
int efi_runtime_map_init(struct kobject *);
void efi_runtime_map_setup(void *, int, u32);
int efi_get_runtime_map_size(void);
int efi_get_runtime_map_desc_size(void);
int efi_runtime_map_copy(void *buf, size_t bufsz);
@@ -1367,9 +1366,6 @@ static inline int efi_runtime_map_init(struct kobject *kobj)
return 0;
}
static inline void
efi_runtime_map_setup(void *map, int nr_entries, u32 desc_size) {}
static inline int efi_get_runtime_map_size(void)
{
return 0;