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| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2017-09-11 18:59:26 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2017-10-15 05:54:40 +0300 |
| commit | d9feb51772b4ade9700c7fa54529327a6c8183a7 (patch) | |
| tree | 38fc1ee6382cf7c1a46df512f20e1eba01111d40 /docs | |
| parent | 903ef7349699dcd932b5981b85c1f1ebe4a4bf2a (diff) | |
| download | qemu-d9feb51772b4ade9700c7fa54529327a6c8183a7.tar.gz | |
dump: update phys_base header field based on VMCOREINFO content
If the guest note is VMCOREINFO, try to get phys_base from it.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/specs/vmcoreinfo.txt | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/docs/specs/vmcoreinfo.txt b/docs/specs/vmcoreinfo.txt index 2868a77142..821261067f 100644 --- a/docs/specs/vmcoreinfo.txt +++ b/docs/specs/vmcoreinfo.txt @@ -39,3 +39,11 @@ qemu dumps. The note format/class must be of the target bitness and the size must be less than 1Mb. + +If the ELF note name is "VMCOREINFO", it is expected to be the Linux +vmcoreinfo note (see Documentation/ABI/testing/sysfs-kernel-vmcoreinfo +in Linux source). In this case, qemu dump code will read the content +as a key=value text file, looking for "NUMBER(phys_base)" key +value. The value is expected to be more accurate than architecture +guess of the value. This is useful for KASLR-enabled guest with +ancient tools not handling the VMCOREINFO note. |