Thanks for the patches Masa,
On Wed, Dec 18, 2019 at 10:13 PM Masayoshi Mizuma <msys.mizuma@xxxxxxxxx> wrote:
>
> 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
>
> where "reserved" entries can be an ACPI table, UEFI related code or
> data. They can be corrupted and result in early failure in booting
> a new kernel. As an actual example, LPI pending table and LPI property
> table, which are pointed by a UEFI data, are sometimes destroyed.
>
> They are expected to be preserved across kexec'ing.
>
> Changelog:
> v3: - Re-based to the latest commit (bd07796).
> - Added Tested-by tag from Bhupesh and Masayoshi
> - Added an error handling in case
> mem_regions_alloc_and_exclude() fails (0002 patch).
>
> 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 | 153 ++++++++++++++++++-----------
> kexec/mem_regions.c | 42 ++++++++
> kexec/mem_regions.h | 7 ++
> 4 files changed, 153 insertions(+), 74 deletions(-)
The changes look fine to me (the patches already have my Tested-by).
Hi Simon,
Can you please help pick these changes for upstream kexec-tools and
arm64 kexec is broken on few machines in the absence of these changes.
The corresponding linux change (see [0]) has already been accepted in
linux-next tree.
[0]. ab0eb16205b4 ("efi/memreserve: Register reservations as
'reserved' in /proc/iomem")
Thanks,
Bhupesh
_______________________________________________
kexec mailing list
kexec@xxxxxxxxxxxxxxxxxxx
http://lists.infradead.org/mailman/listinfo/kexec
