diff options
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 3 | ||||
| -rw-r--r-- | Documentation/admin-guide/l1tf.rst | 6 |
2 files changed, 8 insertions, 1 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 05a252e5178d..835e422572eb 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -2095,6 +2095,9 @@ off Disables hypervisor mitigations and doesn't emit any warnings. + It also drops the swap size and available + RAM limit restriction on both hypervisor and + bare metal. Default is 'flush'. diff --git a/Documentation/admin-guide/l1tf.rst b/Documentation/admin-guide/l1tf.rst index b85dd80510b0..9af977384168 100644 --- a/Documentation/admin-guide/l1tf.rst +++ b/Documentation/admin-guide/l1tf.rst @@ -405,6 +405,9 @@ time with the option "l1tf=". The valid arguments for this option are: off Disables hypervisor mitigations and doesn't emit any warnings. + It also drops the swap size and available RAM limit restrictions + on both hypervisor and bare metal. + ============ ============================================================= The default is 'flush'. For details about L1D flushing see :ref:`l1d_flush`. @@ -576,7 +579,8 @@ Default mitigations The kernel default mitigations for vulnerable processors are: - PTE inversion to protect against malicious user space. This is done - unconditionally and cannot be controlled. + unconditionally and cannot be controlled. The swap storage is limited + to ~16TB. - L1D conditional flushing on VMENTER when EPT is enabled for a guest. |