[PATCH v5 00/10] kexec-tools, x86: E820 memmap pass for kdump
Dave Young
dyoung at redhat.com
Thu Apr 10 19:06:22 PDT 2014
On 04/10/14 at 05:12pm, WANG Chao wrote:
> Hi, all
>
> (Sorry for this late update. I was occupied with something else)
>
> This patchset enables passing memory map via E820 map on x86 platform instead
> of memmap=exactmap. It's a better design and will solve the following problem
> so far:
>
> - kernel cmdline is limited resource and large machines tend to have many
> memory ranges that may excceed kernel cmdline limit size.
> - kASLR doesn't work with memmap=exactmap, because kASLR happens early than
> user defined memmap=exactmap takes effect.
>
> Unfortunately, saved_max_pfn still got its user out there (calgry pci, it looks
> like the only one). So for backward compatibility, I'm introducing a new option
> --pass-memmap-cmdline to force kexec-tools to pass memmap=exactmap, the old way.
>
> This patchset contains massive updates from the previous one. I take some
> suggestions from reviewers. I try to split the changes into smaller pieces and
> keep the whole change as minimal as I can so it wouldn't be too harsh to review
> the patch.
>
> Any comment is appreciate!
>
> v5->v4:
> Dave:
> - separate add_setup_data() to another patch
> Vivek:
> - adding comments for setup_data
> - store crash memory range info golobally in kexec_info
>
> v3->v4:
> Linn: check return value of malloc (use xmalloc).
> me: fix dbgprintf_mem_range.
>
> v2->v3:
> Linn:
> - do not free sd (setup_data) buffer.
> - reuse code in setup_e820 and setup_e820_ext.
>
> v1->v2:
> Vivek:
> - Use function instead of macro for dbgprint_mem_range
> - Do not pass reserved memory range for kdump. It could addressed later
> separately.
>
> WANG Chao (10):
> x86, cleanup: fix indent
> x86, cleanup: add extra arguments to add_memmap() and delete_memmap()
> x86, cleanup: add other types of memory range for 2nd kernel boot to
> memmap_p
> x86, cleanup: add_memmap() only do alignment check on RANGE_RAM
> x86, cleanup: use dbgprint_mem_range for memory range debugging
> x86, cleanup: increase CRASH_MAX_MEMMAP_NR up to
> CRASH_MAX_MEMORY_RANGES
> x86, cleanup: Store crash memory ranges kexec_info
> x86, cleanup: Add a funtion add_setup_data()
> x86: add --pass-memmap-cmdline option
> x86: Pass memory range via E820 for kdump
>
> kexec/arch/i386/crashdump-x86.c | 79 +++++++--------
> kexec/arch/i386/crashdump-x86.h | 2 +-
> kexec/arch/i386/include/arch/options.h | 2 +
> kexec/arch/i386/kexec-x86.c | 4 +
> kexec/arch/i386/kexec-x86.h | 1 +
> kexec/arch/i386/x86-linux-setup.c | 175 ++++++++++++++++++++++-----------
> kexec/arch/i386/x86-linux-setup.h | 1 +
> kexec/arch/x86_64/kexec-x86_64.c | 5 +
> kexec/kexec.h | 2 +
> 9 files changed, 171 insertions(+), 100 deletions(-)
Hi,
Here is what I received, seems there's some duplicate patches?
2535 T 04/10 WANG Chao [PATCH v5 00/10] kexec-tools, x86: E820 memmap pass for kdump
2536 T 04/10 WANG Chao [PATCH v5 01/10] x86, cleanup: fix indent
2537 T 04/10 WANG Chao [PATCH v5 02/10] x86, cleanup: add extra arguments to add_memmap() and delete_memmap()
2538 T 04/10 WANG Chao [PATCH v5 03/10] x86, cleanup: add other types of memory range for 2nd kernel boot to memmap_
2539 T 04/10 WANG Chao [PATCH v5 04/10] x86, cleanup: add_memmap() only do alignment check on RANGE_RAM
2540 T 04/10 WANG Chao [PATCH v5 05/10] x86, cleanup: use dbgprint_mem_range for memory range debugging
2541 T 04/10 WANG Chao [PATCH v5 06/10] x86, cleanup: increase CRASH_MAX_MEMMAP_NR up to CRASH_MAX_MEMORY_RANGES
2542 T 04/10 WANG Chao [PATCH v5 06/10] x86, cleanup: Store crash memory ranges kexec_info
2543 T 04/10 WANG Chao [PATCH v5 07/10] x86, cleanup: Add a funtion add_setup_data()
2544 T 04/10 WANG Chao [PATCH v5 07/10] x86, cleanup: Store crash memory ranges kexec_info
There's another [PATCH v5 06/10] x86, cleanup: Store crash memory ranges kexec_info
2545 T 04/10 WANG Chao [PATCH v5 08/10] x86: add --pass-memmap-cmdline option
2546 T 04/10 WANG Chao [PATCH v5 08/10] x86, cleanup: Add a funtion add_setup_data()
There's another [PATCH v5 07/10] x86, cleanup: Add a funtion add_setup_data()
2547 T 04/10 WANG Chao [PATCH v5 09/10] x86: add --pass-memmap-cmdline option
2548 T 04/10 WANG Chao [PATCH v5 09/10] x86: Pass memory range via E820 for kdump
Thanks
Dave
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