diff options
Diffstat (limited to 'Documentation/x86/x86_64/boot-options.rst')
| -rw-r--r-- | Documentation/x86/x86_64/boot-options.rst | 40 |
1 files changed, 20 insertions, 20 deletions
diff --git a/Documentation/x86/x86_64/boot-options.rst b/Documentation/x86/x86_64/boot-options.rst index ccb7e86bf8d9..cbd14124a667 100644 --- a/Documentation/x86/x86_64/boot-options.rst +++ b/Documentation/x86/x86_64/boot-options.rst @@ -47,14 +47,7 @@ Please see Documentation/x86/x86_64/machinecheck.rst for sysfs runtime tunables. in a reboot. On Intel systems it is enabled by default. mce=nobootlog Disable boot machine check logging. - mce=tolerancelevel[,monarchtimeout] (number,number) - tolerance levels: - 0: always panic on uncorrected errors, log corrected errors - 1: panic or SIGBUS on uncorrected errors, log corrected errors - 2: SIGBUS or log uncorrected errors, log corrected errors - 3: never panic or SIGBUS, log all errors (for testing only) - Default is 1 - Can be also set using sysfs which is preferable. + mce=monarchtimeout (number) monarchtimeout: Sets the time in us to wait for other CPUs on machine checks. 0 to disable. @@ -164,15 +157,6 @@ Rebooting newer BIOS, or newer board) using this option will ignore the built-in quirk table, and use the generic default reboot actions. -Non Executable Mappings -======================= - - noexec=on|off - on - Enable(default) - off - Disable - NUMA ==== @@ -303,11 +287,13 @@ iommu options only relevant to the AMD GART hardware IOMMU: iommu options only relevant to the software bounce buffering (SWIOTLB) IOMMU implementation: - swiotlb=<pages>[,force] - <pages> - Prereserve that many 128K pages for the software IO bounce buffering. + swiotlb=<slots>[,force,noforce] + <slots> + Prereserve that many 2K slots for the software IO bounce buffering. force Force all IO through the software TLB. + noforce + Do not initialize the software TLB. Miscellaneous @@ -317,3 +303,17 @@ Miscellaneous Do not use GB pages for kernel direct mappings. gbpages Use GB pages for kernel direct mappings. + + +AMD SEV (Secure Encrypted Virtualization) +========================================= +Options relating to AMD SEV, specified via the following format: + +:: + + sev=option1[,option2] + +The available options are: + + debug + Enable debug messages. |