diff options
| author | Konrad Rzeszutek Wilk <[email protected]> | 2018-04-26 02:04:18 +0000 |
|---|---|---|
| committer | Thomas Gleixner <[email protected]> | 2018-05-03 11:55:47 +0000 |
| commit | 1b86883ccb8d5d9506529d42dbe1a5257cb30b18 (patch) | |
| tree | 62fc0a681b462a5703dabe5ad8d6acb8e7e2745a /fs/proc/array.c | |
| parent | x86/bugs: Concentrate bug reporting into a separate function (diff) | |
| download | kernel-1b86883ccb8d5d9506529d42dbe1a5257cb30b18.tar.gz kernel-1b86883ccb8d5d9506529d42dbe1a5257cb30b18.zip | |
x86/bugs: Read SPEC_CTRL MSR during boot and re-use reserved bits
The 336996-Speculative-Execution-Side-Channel-Mitigations.pdf refers to all
the other bits as reserved. The Intel SDM glossary defines reserved as
implementation specific - aka unknown.
As such at bootup this must be taken it into account and proper masking for
the bits in use applied.
A copy of this document is available at
https://bugzilla.kernel.org/show_bug.cgi?id=199511
[ tglx: Made x86_spec_ctrl_base __ro_after_init ]
Suggested-by: Jon Masters <[email protected]>
Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Borislav Petkov <[email protected]>
Reviewed-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'fs/proc/array.c')
0 files changed, 0 insertions, 0 deletions