[v2] Fix dumping in kdump format with non-aligned memory

[PATCH v2 0/2] Fix dumping in kdump format with non-aligned memory

marcandre.lureau@redhat.com posted 2 patches 1 year, 7 months ago

Diff against v1
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git fetch https://github.com/patchew-project/qemu tags/patchew/20220905125741.95516-1-marcandre.lureau@redhat.com

Maintainers: "Marc-André Lureau" <marcandre.lureau@redhat.com>

dump/dump.c | 88 +++++++++++++++++++++++++++++++++++------------------
roms/SLOF   |  2 +-
2 files changed, 59 insertions(+), 31 deletions(-)

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[PATCH v2 0/2] Fix dumping in kdump format with non-aligned memory

Posted by marcandre.lureau@redhat.com 1 year, 7 months ago

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Hi,

dump.c:get_next_page expects GuestPhysBlock to be page-aligned, and crashes over
memory regions such as "tpm-crb-cmd". Teach it to handle non-aligned regions
too, by using a caller pre-allocated filled up page as necessary.

Fixes:
https://bugzilla.redhat.com/show_bug.cgi?id=2120480

v2:
 - drop some unnecessary changes in the first patch
 - use pre-allocated caller memory, instead of allocating in get_next_page()
 - fix some comment

Marc-André Lureau (2):
  dump: simplify a bit kdump get_next_page()
  dump: fix kdump to work over non-aligned blocks

 dump/dump.c | 88 +++++++++++++++++++++++++++++++++++------------------
 roms/SLOF   |  2 +-
 2 files changed, 59 insertions(+), 31 deletions(-)

-- 
2.37.2