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| author | Laurent Vivier <lvivier@redhat.com> | 2016-08-08 15:08:53 +0200 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2016-08-10 13:05:05 +1000 |
| commit | 760d88d1d0c409f1afe6f1c91539487413e8b2a9 (patch) | |
| tree | bb5c27e6bc5d411c6dbeedfa8f4714454cae09fa /scripts/tracetool/backend/syslog.py | |
| parent | 2bb15bddf2607110820d5ce5aa43baac27292fb3 (diff) | |
| download | focaccia-qemu-760d88d1d0c409f1afe6f1c91539487413e8b2a9.tar.gz focaccia-qemu-760d88d1d0c409f1afe6f1c91539487413e8b2a9.zip | |
ppc64: fix compressed dump with pseries kernel
If we don't provide the page size in target-ppc:cpu_get_dump_info(),
the default one (TARGET_PAGE_SIZE, 4KB) is used to create
the compressed dump. It works fine with Macintosh, but not with
pseries as the kernel default page size is 64KB.
Without this patch, if we generate a compressed dump in the QEMU monitor:
(qemu) dump-guest-memory -z qemu.dump
This dump cannot be read by crash:
# crash vmlinux qemu.dump
...
WARNING: cannot translate vmemmap kernel virtual addresses:
commands requiring page structure contents will fail
...
Page_size is used to determine the dumpfile's block size. The
block size needs to be at least the page size, but a multiple of page
size works fine too. For PPC64, linux supports either 4KB or 64KB software
page size. So we define the page_size to 64KB.
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'scripts/tracetool/backend/syslog.py')
0 files changed, 0 insertions, 0 deletions