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| author | Juergen Gross <jgross@suse.com> | 2018-08-21 17:37:54 +0200 |
|---|---|---|
| committer | Boris Ostrovsky <boris.ostrovsky@oracle.com> | 2018-08-27 09:31:26 -0400 |
| commit | f7c90c2aa4004808dff777ba6ae2c7294dd06851 (patch) | |
| tree | 73c9a3d2b1daf567501a9cc0eaad622607e36a32 /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | 75f2d3a0cef5cd8cd41772c9f8ada37dee9c9369 (diff) | |
x86/xen: don't write ptes directly in 32-bit PV guests
In some cases 32-bit PAE PV guests still write PTEs directly instead of
using hypercalls. This is especially bad when clearing a PTE as this is
done via 32-bit writes which will produce intermediate L1TF attackable
PTEs.
Change the code to use hypercalls instead.
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions