diff options
| author | Dave Young <dyoung@redhat.com> | 2013-12-20 14:02:18 +0400 |
|---|---|---|
| committer | Matt Fleming <matt.fleming@intel.com> | 2013-12-21 19:29:36 +0400 |
| commit | 926172d46038d7610b6b8d84e40db727cefb482d (patch) | |
| tree | 8963aaa9fccd0a4ee0d59717b4de8e8cdfebbe62 /drivers/firmware/efi/efi.c | |
| parent | a0998eb15afeffbf52a2c2829318f67df9ac57b8 (diff) | |
| download | linux-926172d46038d7610b6b8d84e40db727cefb482d.tar.xz | |
efi: Export EFI runtime memory mapping to sysfs
kexec kernel will need exactly same mapping for EFI runtime memory
ranges. Thus here export the runtime ranges mapping to sysfs,
kexec-tools will assemble them and pass to 2nd kernel via setup_data.
Introducing a new directory /sys/firmware/efi/runtime-map just like
/sys/firmware/memmap. Containing below attribute in each file of that
directory:
attribute num_pages phys_addr type virt_addr
Signed-off-by: Dave Young <dyoung@redhat.com>
Tested-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Diffstat (limited to 'drivers/firmware/efi/efi.c')
| -rw-r--r-- | drivers/firmware/efi/efi.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c index 72533af72b98..4753bac65279 100644 --- a/drivers/firmware/efi/efi.c +++ b/drivers/firmware/efi/efi.c @@ -167,6 +167,10 @@ static int __init efisubsys_init(void) goto err_unregister; } + error = efi_runtime_map_init(efi_kobj); + if (error) + goto err_remove_group; + /* and the standard mountpoint for efivarfs */ efivars_kobj = kobject_create_and_add("efivars", efi_kobj); if (!efivars_kobj) { |