When booting an arm64 kernel w/initrd using UEFI/grub, use of mem= will likely cut off part or all of the initrd. This leaves it outside the kernel linear map which leads to failure when unpacking. The x86 code has a similar need to relocate an initrd outside of mapped memory in some cases. The current x86 code uses early_memremap() to copy the original initrd from unmapped to mapped RAM. This patchset creates a generic copy_from_early_mem() utility based on that x86 code and has arm64 and x86 share it in their respective initrd relocation code. Changes from V2: * Fixed sparse warning in copy_from_early_mem() * Removed unneeded MAX_MAP_CHUNK from x86 setup.c * Moved #ifdef outside arm64 relocate_initrd() definition. Changes from V1: * Change cover letter subject to highlight the added generic code * Add patch for x86 to use common copy_from_early_mem() Mark Salter (3): mm: add utility for early copy from unmapped ram arm64: support initrd outside kernel linear map x86: use generic early mem copy arch/arm64/kernel/setup.c | 59 +++++++++++++++++++++++++++++++++++++ arch/x86/kernel/setup.c | 22 +------------- include/asm-generic/early_ioremap.h | 6 ++++ mm/early_ioremap.c | 22 ++++++++++++++ 4 files changed, 88 insertions(+), 21 deletions(-) -- 2.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
