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| author | Frediano Ziglio <frediano.ziglio@cloud.com> | 2025-02-27 17:50:15 +0300 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2025-03-14 13:04:25 +0300 |
| commit | 2356f15caefc0cc63d9cc5122641754f76ef9b25 (patch) | |
| tree | cffdddf2e2d38d387bc5abca9c96830728706ab7 /tools/perf/scripts/python/libxed.py | |
| parent | 80e54e84911a923c40d7bee33a34c1b4be148d7a (diff) | |
| download | linux-2356f15caefc0cc63d9cc5122641754f76ef9b25.tar.xz | |
xen: Add support for XenServer 6.1 platform device
On XenServer on Windows machine a platform device with ID 2 instead of
1 is used.
This device is mainly identical to device 1 but due to some Windows
update behaviour it was decided to use a device with a different ID.
This causes compatibility issues with Linux which expects, if Xen
is detected, to find a Xen platform device (5853:0001) otherwise code
will crash due to some missing initialization (specifically grant
tables). Specifically from dmesg
RIP: 0010:gnttab_expand+0x29/0x210
Code: 90 0f 1f 44 00 00 55 31 d2 48 89 e5 41 57 41 56 41 55 41 89 fd
41 54 53 48 83 ec 10 48 8b 05 7e 9a 49 02 44 8b 35 a7 9a 49 02
<8b> 48 04 8d 44 39 ff f7 f1 45 8d 24 06 89 c3 e8 43 fe ff ff
44 39
RSP: 0000:ffffba34c01fbc88 EFLAGS: 00010086
...
The device 2 is presented by Xapi adding device specification to
Qemu command line.
Signed-off-by: Frediano Ziglio <frediano.ziglio@cloud.com>
Acked-by: Juergen Gross <jgross@suse.com>
Message-ID: <20250227145016.25350-1-frediano.ziglio@cloud.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'tools/perf/scripts/python/libxed.py')
0 files changed, 0 insertions, 0 deletions