From 20942c83ce66af8afb3db46a2505be7b7802311e Mon Sep 17 00:00:00 2001 From: Ma Wupeng Date: Wed, 9 Feb 2022 15:36:18 +0800 Subject: [PATCH] efi: Find mirrored memory ranges for arm64 hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I4SK3S CVE: NA -------------------------------- Mirrored memory could be used on HiSilion's arm64 SoC. So efi_find_mirror() is added in efi_init() so that systems can get memblock about any mirrored ranges. Co-developed-by: Jing Xiangfeng Signed-off-by: Ma Wupeng Reviewed-by: Kefeng Wang Signed-off-by: Yang Yingliang --- Documentation/admin-guide/kernel-parameters.txt | 2 +- arch/arm64/mm/init.c | 4 +++- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 58eb696ccf13..886c900323f1 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -1944,7 +1944,7 @@ keepinitrd [HW,ARM] - kernelcore= [KNL,X86,IA-64,PPC] + kernelcore= [KNL,X86,IA-64,PPC,ARM64] Format: nn[KMGTPE] | nn% | "mirror" This parameter specifies the amount of memory usable by the kernel for non-movable allocations. The requested diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 8eb44aec2c78..a3b3bfccd822 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -724,8 +724,10 @@ void __init arm64_memblock_init(void) else arm64_dma_phys_limit = PHYS_MASK + 1; - if (efi_enabled(EFI_MEMMAP)) + if (efi_enabled(EFI_MEMMAP)) { efi_fake_memmap(); + efi_find_mirror(); + } reserve_pin_memory_res(); -- GitLab