On Tue, 2015-07-28 at 15:59 +0100, Mark Rutland wrote: > Hi Mark, > > As a heads-up, it looks like you missed a space when sending this; Arnd > and Ard got merged into: > > "Arnd Bergmann <arnd@xxxxxxxx>--cc=Ard Biesheuvel" < > ard.biesheuvel@xxxxxxxxxx> > > I've corrected that for this reply. Oops. Thanks. > > On Tue, Jul 28, 2015 at 03:32:39PM +0100, Mark Salter wrote: > > 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 use it to relocate the > > initrd > > if necessary. > > This sounds like a sane idea to me. > > > Mark Salter (2): > > mm: add utility for early copy from unmapped ram > > arm64: support initrd outside kernel linear map > > > > arch/arm64/kernel/setup.c | 55 > > +++++++++++++++++++++++++++++++++++++ > > include/asm-generic/early_ioremap.h | 6 ++++ > > mm/early_ioremap.c | 22 +++++++++++++++ > > 3 files changed, 83 insertions(+) > > Any reason for not moving x86 over to the new generic version? I have a patch to do that but I'm not sure how to contrive a testcase to exercise it. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>