Sorry to bother you. I just sent to the wrong mailing list. Please ignore this thread.
On 07/16/15 at 04:46pm, Baoquan He wrote: > This patchset includes 3 parts. > > ------------------------------------- > 1st part: > Includes 13 upstream commits. They are recommended by Nigel Croxon > since he back ported this feature to rhel7. This 13 back ports > works for all ARCHs except of s390 since it always broke s390n kdump. > > c2c1b08 fs/proc/vmcore.c: put if tests in the top of the while loop to reduce > duplication > 0fa73b8 include/linux/mm.h: add PAGE_ALIGNED() helper > b27eb18 vmcore: clean up read_vmcore() > f2bdacd vmcore: allocate buffer for ELF headers on page-size alignment > 7f614cd vmcore: treat memory chunks referenced by PT_LOAD program header > entries in page-size boundary in vmcore_list > cef2ac3 vmalloc: make find_vm_area check in range > e69e9d4a vmalloc: introduce remap_vmalloc_range_partial > 087350c vmcore: allocate ELF note segment in the 2nd kernel vmalloc memory > ef9e78f vmcore: allow user process to remap ELF note segment buffer > 591ff71 vmcore: calculate vmcore file size from buffer size and total size of > vmcore objects > 8308697 vmcore: support mmap() on /proc/vmcore > 5a74953 s390/kdump: Disable mmap for s390 > 0692ded fs/proc/vmcore.c:mmap_vmcore: skip non-ram pages reported by > hypervisors > > ------------------------------------- > 2nd part: > Includes several s390 related memory commits. Since these 13 commits > in 1st part worked on all ARCHs except of S390. Then I asked IBM > S390 kernel developers Michael Holzheu <[email protected]>, > Jan Willeke <[email protected]> to help, they suggested these 3 commits. > With them it works for s390 kdump. > > 191a2fa s390/kdump: Allow copy_oldmem_page() copy to virtual memory" > 9cb2181 vmcore: introduce remap_oldmem_pfn_range()" > 23df79d s390/vmcore: implement remap_oldmem_pfn_range for s390" > > ------------------------------------- > 3rd part: > Includes 3 commits. They are back ported because 3 commits in > 2nd part will fail x86 and ppc compiling. > > 997c136 fs/proc/vmcore.c: add hook to read_from_oldmem() to check for non-ram > pages > 816422a asm-generic, mm: pgtable: consolidate zero page helpers > 238ec4e [S390] zero page cache synonyms > > > Brew build: > > I made a brew build here and tested it on s390 and x86 machine, > both works. > https://brewweb.devel.redhat.com/taskinfo?taskID=9357037 > > Then Nigel took patches from my rh-git and made a brew build as below. > Lisa from HP took a test and confirmed this works on HP machines > and it improved the dump as expected. > https://brewweb.devel.redhat.com/taskinfo?taskID=9380805 > > My rh-git for this feature is here: > git://git.engineering.redhat.com/users/bhe/rhel6/.git mmap-new > > Baoquan He (19): > [S390] zero page cache synonyms > asm-generic, mm: pgtable: consolidate zero page helpers > fs/proc/vmcore.c: add hook to read_from_oldmem() to check for non-ram > pages > fs/proc/vmcore.c: put if tests in the top of the while loop to reduce > duplication > include/linux/mm.h: add PAGE_ALIGNED() helper > vmcore: clean up read_vmcore() > vmcore: allocate buffer for ELF headers on page-size alignment > vmcore: treat memory chunks referenced by PT_LOAD program header > entries in page-size boundary in vmcore_list > vmalloc: make find_vm_area check in range > vmalloc: introduce remap_vmalloc_range_partial > vmcore: allocate ELF note segment in the 2nd kernel vmalloc memory > vmcore: allow user process to remap ELF note segment buffer > vmcore: calculate vmcore file size from buffer size and total size of > vmcore objects > vmcore: support mmap() on /proc/vmcore > s390/kdump: Disable mmap for s390 > s390/kdump: Allow copy_oldmem_page() copy to virtual memory > vmcore: introduce remap_oldmem_pfn_range() > s390/vmcore: implement remap_oldmem_pfn_range for s390 > fs/proc/vmcore.c:mmap_vmcore: skip non-ram pages reported by > hypervisors > > arch/mips/include/asm/pgtable.h | 10 +- > arch/s390/include/asm/pgtable.h | 14 +- > arch/s390/kernel/crash_dump.c | 75 +++- > arch/s390/mm/init.c | 49 ++- > fs/proc/vmcore.c | 899 > ++++++++++++++++++++++++++++++---------- > include/asm-generic/pgtable.h | 26 ++ > include/linux/crash_dump.h | 9 + > include/linux/mm.h | 3 + > include/linux/vmalloc.h | 4 + > mm/memory.c | 14 - > mm/vmalloc.c | 70 +++- > 11 files changed, 901 insertions(+), 272 deletions(-) > > -- > 2.1.0 > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
