kernel.git/arch/arm64/kernel/machine_kexec.c, branch linux-5.12.y

arm64: kexec: call kexec_image_info only once

2021-01-27T15:41:12Z

Currently, kexec_image_info() is called during load time, and right before kernel is being kexec'ed. There is no need to do both. So, call it only once when segments are loaded and the physical location of page with copy of arm64_relocate_new_kernel is known. Signed-off-by: Pavel Tatashin Acked-by: James Morse Link: https://lore.kernel.org/r/20210125191923.1060122-11-pasha.tatashin@soleen.com Signed-off-by: Will Deacon

arm64: kexec: move relocation function setup

2021-01-27T15:41:12Z

Currently, kernel relocation function is configured in machine_kexec() at the time of kexec reboot by using control_code_page. This operation, however, is more logical to be done during kexec_load, and thus remove from reboot time. Move, setup of this function to newly added machine_kexec_post_load(). Because once MMU is enabled, kexec control page will contain more than relocation kernel, but also vector table, add pointer to the actual function within this page arch.kern_reloc. Currently, it equals to the beginning of page, we will add offsets later, when vector table is added. Signed-off-by: Pavel Tatashin Reviewed-by: James Morse Link: https://lore.kernel.org/r/20210125191923.1060122-10-pasha.tatashin@soleen.com Signed-off-by: Will Deacon

arm64: kexec: make dtb_mem always enabled

2021-01-27T15:41:11Z

Currently, dtb_mem is enabled only when CONFIG_KEXEC_FILE is enabled. This adds ugly ifdefs to c files. Always enabled dtb_mem, when it is not used, it is NULL. Change the dtb_mem to phys_addr_t, as it is a physical address. Signed-off-by: Pavel Tatashin Reviewed-by: James Morse Link: https://lore.kernel.org/r/20210125191923.1060122-2-pasha.tatashin@soleen.com Signed-off-by: Will Deacon

arm64: fix the flush_icache_range arguments in machine_kexec

2020-05-11T11:02:14Z

The second argument is the end "pointer", not the length. Fixes: d28f6df1305a ("arm64/kexec: Add core kexec support") Cc: # 4.8.x- Signed-off-by: Christoph Hellwig Signed-off-by: Catalin Marinas

Revert "arm64: kexec: make dtb_mem always enabled"

2020-01-10T16:00:50Z

Adding crash dump support to 'kexec_file' is going to extend 'struct kimage_arch' with more 'kexec_file'-specific members. The cleanup here then starts to get in the way, so revert it. This reverts commit 621516789ee6e285cb2088fe4706eedd030d38bf. Reported-by: AKASHI Takahiro Signed-off-by: Will Deacon

arm64: kexec: make dtb_mem always enabled

2020-01-08T16:32:55Z

arm64: kexec: remove unnecessary debug prints

2020-01-08T16:32:55Z

The kexec_image_info() outputs all the necessary information about the upcoming kexec. The extra debug printfs in machine_kexec() are not needed. Signed-off-by: Pavel Tatashin Signed-off-by: Will Deacon

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55Z

Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Enrico Weigelt Reviewed-by: Kate Stewart Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman

arm64: kdump: no need to mark crashkernel pages manually PG_reserved

2019-03-06T05:07:19Z

The crashkernel is reserved via memblock_reserve(). memblock_free_all() will call free_low_memory_core_early(), which will go over all reserved memblocks, marking the pages as PG_reserved. So manually marking pages as PG_reserved is not necessary, they are already in the desired state (otherwise they would have been handed over to the buddy as free pages and bad things would happen). Link: http://lkml.kernel.org/r/20190114125903.24845-8-david@redhat.com Signed-off-by: David Hildenbrand Reviewed-by: Matthias Brugger Reviewed-by: Bhupesh Sharma Cc: Catalin Marinas Cc: Will Deacon Cc: James Morse Cc: David Hildenbrand Cc: Mark Rutland Cc: Dave Kleikamp Cc: Mike Rapoport Cc: Michal Hocko Cc: Florian Fainelli Cc: Stefan Agner Cc: Laura Abbott Cc: Greg Hackmann Cc: Johannes Weiner Cc: Kristina Martsenko Cc: CHANDAN VN Cc: AKASHI Takahiro Cc: Logan Gunthorpe Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

arm64: kexec: no need to ClearPageReserved()

2019-03-06T05:07:19Z

This will be done by free_reserved_page(). Link: http://lkml.kernel.org/r/20190114125903.24845-7-david@redhat.com Signed-off-by: David Hildenbrand Acked-by: James Morse Reviewed-by: Bhupesh Sharma Cc: Catalin Marinas Cc: Will Deacon Cc: James Morse Cc: Marc Zyngier Cc: Dave Kleikamp Cc: Mark Rutland Cc: Michal Hocko Cc: Matthew Wilcox Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds