On Fri, May 27, 2016 at 08:50:39AM -0400, Dave Anderson wrote:
> Takahiro,
>
> I am out of the office until next Tuesday, so I won't be able to
> comment on the v3 patch until then. One thing, though, is that
> I already fixed the page _count to _refcount issue in the github
> repo a few days ago.
OK, I removed it.
Anyway don't worry, I will post v4.
I think that the backward compatibility issue due to VA_BITS is also
fixed in this version.
In v4.5 or earlier (say, for 48-bit VA),
swapper_pg_dir: 0xffff800000b6f000
bu in v4.6,
swapper_pg_dir: 0xffff000008ce9000
So we need machdep->flags & NEW_VMEMMAP check in arm64_calc_VA_BITS().
Thanks,
-Takahiro AKASHI
> Thanks,
> Dave
>
>
> > Not a big jump from v2, but ...
> >
> > Chnages in v3:
> > * Refined KASLR handling
> > hopefully the tool works even on a live system if CONFIG_RANDOMIZE_RAM
> > is
> > not configured
> > * Fixed a renaming of a member of struct page
> > * Removed a commit message regarding an issue of backtracing a panic'ed
> > task
> > because this is not a bug in this tool, but my kdump patch's.
> > * Reported "kmem <vmalloc addr>" issue in a commit message
> >
> > changes in v2:
> > * Fixed build warnings
> > * Moved ARM64_NEW_VMEMMAP to machdep->flags
> > * Show additional kaslr-related parameters in arm64_dump_machdep_table()
> > * Handle a VMCOREINFO, "NUMBER(kimage_voffset)"
> >
> > AKASHI Takahiro (3):
> > arm64: fix kernel memory map handling for kaslr-enabled kernel
> > fix a renaming of a member of struct page, _count to _refcount
> > arm64: show a warning for 48-bit kernel with 4KB page
> >
> > arm64.c | 219
> > ++++++++++++++++++++++++++++++++++++++++++++++++--------------
> > defs.h | 24 +++++--
> > main.c | 7 +-
> > memory.c | 6 +-
> > symbols.c | 12 ++--
> > 5 files changed, 204 insertions(+), 64 deletions(-)
> >
> > --
> > 2.8.1
> >
> > --
> > Crash-utility mailing list
> > Crash-utility@xxxxxxxxxx
> > https://www.redhat.com/mailman/listinfo/crash-utility
> >
> >
>
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--
Thanks,
-Takahiro AKASHI
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