diff options
Diffstat (limited to 'Documentation/admin-guide/kernel-parameters.txt')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index d9c171ce4190..dad6fa01af95 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -2233,6 +2233,17 @@ memory contents and reserves bad memory regions that are detected. + mem_encrypt= [X86-64] AMD Secure Memory Encryption (SME) control + Valid arguments: on, off + Default (depends on kernel configuration option): + on (CONFIG_AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT=y) + off (CONFIG_AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT=n) + mem_encrypt=on: Activate SME + mem_encrypt=off: Do not activate SME + + Refer to Documentation/x86/amd-memory-encryption.txt + for details on when memory encryption can be activated. + mem_sleep_default= [SUSPEND] Default system suspend mode: s2idle - Suspend-To-Idle shallow - Power-On Suspend or equivalent (if supported) @@ -2633,9 +2644,10 @@ In kernels built with CONFIG_NO_HZ_FULL=y, set the specified list of CPUs whose tick will be stopped whenever possible. The boot CPU will be forced outside - the range to maintain the timekeeping. - The CPUs in this range must also be included in the - rcu_nocbs= set. + the range to maintain the timekeeping. Any CPUs + in this list will have their RCU callbacks offloaded, + just as if they had also been called out in the + rcu_nocbs= boot parameter. noiotrap [SH] Disables trapped I/O port accesses. @@ -2696,6 +2708,8 @@ nopat [X86] Disable PAT (page attribute table extension of pagetables) support. + nopcid [X86-64] Disable the PCID cpu feature. + norandmaps Don't use address space randomization. Equivalent to echo 0 > /proc/sys/kernel/randomize_va_space |
