On Mon, Dec 23, 2019 at 12:25:00PM +0530, Bhupesh Sharma wrote:
> 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, applied.
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