On Thu, Feb 9, 2017 at 3:42 PM, Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> wrote: > The FDT is mapped via a fixmap entry that is at least 2 MB in size and > 2 MB aligned on 4 KB page size kernels. > > On UEFI systems, the FDT allocation may share this 2 MB block with a > reserved region, or another memory region that we should never map, > unless we account for this in the size of the allocation (the alignment > is already 2 MB) > > So instead of taking guesses at the needed space, simply allocate 2 MB > immediately. The allocation will be recorded as a EFI_LOADER_DATA, and > the kernel only memblock_reserve()'s the actual size of the FDT, so the > unused space will be released to the kernel. > > Signed-off-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> This patch is over a month old, and it's been reviewed and tested. We really need this in 4.11. Please get this merged into 4.11-rc4. -- Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project. -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
