diff options
| author | Dave Young | 2014-08-18 09:30:07 +0800 |
|---|---|---|
| committer | Matt Fleming | 2014-10-03 18:40:59 +0100 |
| commit | 6632210f50530ea53dd21f786f2854609d928689 (patch) | |
| tree | d7b81d1cec03e959fb87fdcfb5c46a8506461ff3 /arch/arm64 | |
| parent | 88f8abd594082b9c08789e8527e4e38116a963ec (diff) | |
arm64/efi: Do not enter virtual mode if booting with efi=noruntime or noefi
In case efi runtime disabled via noefi kernel cmdline
arm64_enter_virtual_mode should error out.
At the same time move early_memunmap(memmap.map, mapsize) to the
beginning of the function or it will leak early mem.
Signed-off-by: Dave Young <dyoung@redhat.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/kernel/efi.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c index 6ed0362dd579..8f5db4a3c9d9 100644 --- a/arch/arm64/kernel/efi.c +++ b/arch/arm64/kernel/efi.c @@ -392,11 +392,16 @@ static int __init arm64_enter_virtual_mode(void) return -1; } - pr_info("Remapping and enabling EFI services.\n"); - - /* replace early memmap mapping with permanent mapping */ mapsize = memmap.map_end - memmap.map; early_memunmap(memmap.map, mapsize); + + if (efi_runtime_disabled()) { + pr_info("EFI runtime services will be disabled.\n"); + return -1; + } + + pr_info("Remapping and enabling EFI services.\n"); + /* replace early memmap mapping with permanent mapping */ memmap.map = (__force void *)ioremap_cache((phys_addr_t)memmap.phys_map, mapsize); memmap.map_end = memmap.map + mapsize; |