[PATCH 0/2 RESEND v7] add reserved e820 ranges to the kdump kernel e820 table

Lianbo Jiang
2018-11-24T05:12:21Z

These patches add the new I/O resource descriptor 'IORES_DESC_RESERVED'
for the iomem resources search interfaces, and in order to make it still
work after the new descriptor is added, these codes originally related
to 'IORES_DESC_NONE' have been updated.

In addition, for the MMCONFIG issue and the SME kdump issue, it is
necessary to pass the e820 reserved ranges to kdump kernel.

Changes since v1:
1. Modified the value of flags to "0", when walking through the whole
tree for e820 reserved ranges.

Changes since v2:
1. Modified the value of flags to "0", when walking through the whole
tree for e820 reserved ranges.
2. Modified the invalid SOB chain issue.

Changes since v3:
1. Dropped [PATCH 1/3 v3] resource: fix an error which walks through iomem
resources. Please refer to this commit <010a93bf97c7> "resource: Fix
find_next_iomem_res() iteration issue"

Changes since v4:
1. Improve the patch log, and add kernel log.

Changes since v5:
1. Rewrite these patches log.

Changes since v6:
1. Modify the [PATCH 1/2], and add the new I/O resource descriptor
'IORES_DESC_RESERVED' for the iomem resources search interfaces,
and also updates these codes relates to 'IORES_DESC_NONE'.
2. Modify the [PATCH 2/2], and walk through io resource based on the
new descriptor 'IORES_DESC_RESERVED'.
3. Update patch log.

Lianbo Jiang (2):
resource: add the new I/O resource descriptor 'IORES_DESC_RESERVED'
x86/kexec_file: add reserved e820 ranges to kdump kernel e820 table

arch/ia64/kernel/efi.c | 4 ++++
arch/x86/kernel/crash.c | 6 ++++++
arch/x86/kernel/e820.c | 2 +-
arch/x86/mm/ioremap.c | 9 ++++++++-
include/linux/ioport.h | 1 +
kernel/resource.c | 6 +++---
6 files changed, 23 insertions(+), 5 deletions(-)

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2.17.1