# @James, @Bhupesh
# Could you kindly test this patch, please?
# I'm not quite confident that I correctly merged my patch with,
# particularly, Bhupesh's recent change.
In recent arm64 kernels, /proc/iomem has an extended file format like:
40000000-5871ffff : System RAM
41800000-426affff : Kernel code
426b0000-42aaffff : reserved
42ab0000-42c64fff : Kernel data
54400000-583fffff : Crash kernel
58590000-585effff : reserved
58700000-5871ffff : reserved
58720000-58b5ffff : reserved
58b60000-5be3ffff : System RAM
58b61000-58b61fff : reserved
59a77000-59a77fff : reserved
5be40000-5becffff : reserved
5bed0000-5bedffff : System RAM
5bee0000-5bffffff : reserved
5c000000-5fffffff : System RAM
5da00000-5e9fffff : reserved
5ec00000-5edfffff : reserved
5ef6a000-5ef6afff : reserved
5ef6b000-5efcafff : reserved
5efcd000-5efcffff : reserved
5efd0000-5effffff : reserved
5f000000-5fffffff : reserved
where "reserved" entries can be an APCI table, UEFI related code or data,
and they are expected to be preserved across kexec'ing.
With this patch[1], kexec/kdump will be allowed to handle them properly.
[1] https://git.linaro.org/people/takahiro.akashi/kexec-tools.git arm64/resv_mem
AKASHI Takahiro (3):
kexec: add variant helper functions for handling memory regions
arm64: kexec: allocate memory space avoiding reserved regions
arm64: kdump: deal with a lot of resource entries in /proc/iomem
kexec/arch/arm64/crashdump-arm64.c | 25 ++---
kexec/arch/arm64/kexec-arm64.c | 146 +++++++++++++++++------------
kexec/mem_regions.c | 42 +++++++++
kexec/mem_regions.h | 7 ++
4 files changed, 146 insertions(+), 74 deletions(-)
--
2.19.1
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