linux-kernel - [PATCH v2 0/3] arm64: kexec

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Message-Id: <20191114051510.17037-1-takahiro.akashi@linaro.org>
Date:   Thu, 14 Nov 2019 14:15:07 +0900
From:   AKASHI Takahiro <takahiro.akashi@...aro.org>
To:     catalin.marinas@....com, will.deacon@....com, robh+dt@...nel.org,
        frowand.list@...il.com
Cc:     james.morse@....com, kexec@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        AKASHI Takahiro <takahiro.akashi@...aro.org>
Subject: [PATCH v2 0/3] arm64: kexec_file: add kdump

This is the last piece of my kexec_file_load implementation for arm64.
It is now ready for being merged as some relevant patch to dtc/libfdt[1]
has finally been integrated in v5.3-rc1.
(Nothing changed since kexec_file v16[2] except adding Patch#1 and #2.)

Patch#1 and #2 are preliminary patches for libfdt component.
Patch#3 is to add kdump support.

Bhepesh's patch[3] will be required for 52-bit VA support.
Once this patch is applied, whether or not CONFIG_ARM64_VA_BITS_52 is
enabled or not, a matching fix on user space side, crash utility,
will also be needed. 

Anyway, I tested my patch, at least, with the following configuration:
1) CONFIG_ARM64_BITS_48=y
2) CONFIG_ARM64_BITS_52=y, but vabits_actual=48

(I don't have any platform to use for
3) CONFIG_ARM64_BITS_52=y, and vabits_actual=52)

[1] commit 9bb9c6a110ea ("scripts/dtc: Update to upstream version
    v1.5.0-23-g87963ee20693"), in particular
	7fcf8208b8a9 libfdt: add fdt_append_addrrange()
[2] http://lists.infradead.org/pipermail/linux-arm-kernel/2018-November/612641.html
[3] http://lists.infradead.org/pipermail/linux-arm-kernel/2019-November/693411.html

Changes in v2 (Nov 14, 2019)
* rebased to v5.4-rc7
* no functional changes

AKASHI Takahiro (3):
  libfdt: define UINT32_MAX in libfdt_env.h
  libfdt: include fdt_addresses.c
  arm64: kexec_file: add crash dump support

 arch/arm64/include/asm/kexec.h         |   4 +
 arch/arm64/kernel/kexec_image.c        |   4 -
 arch/arm64/kernel/machine_kexec_file.c | 106 ++++++++++++++++++++++++-
 include/linux/libfdt_env.h             |   3 +
 lib/Makefile                           |   2 +-
 lib/fdt_addresses.c                    |   2 +
 6 files changed, 112 insertions(+), 9 deletions(-)
 create mode 100644 lib/fdt_addresses.c

-- 
2.21.0