diff options
Diffstat (limited to 'Documentation/admin-guide/kernel-parameters.txt')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index bdb22006f713..56bd70ee82fa 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -2421,6 +2421,23 @@ feature (tagged TLBs) on capable Intel chips. Default is 1 (enabled) + l1d_flush= [X86,INTEL] + Control mitigation for L1D based snooping vulnerability. + + Certain CPUs are vulnerable to an exploit against CPU + internal buffers which can forward information to a + disclosure gadget under certain conditions. + + In vulnerable processors, the speculatively + forwarded data can be used in a cache side channel + attack, to access data to which the attacker does + not have direct access. + + This parameter controls the mitigation. The + options are: + + on - enable the interface for the mitigation + l1tf= [X86] Control mitigation of the L1TF vulnerability on affected CPUs @@ -4777,7 +4794,7 @@ reboot= [KNL] Format (x86 or x86_64): - [w[arm] | c[old] | h[ard] | s[oft] | g[pio]] \ + [w[arm] | c[old] | h[ard] | s[oft] | g[pio]] | d[efault] \ [[,]s[mp]#### \ [[,]b[ios] | a[cpi] | k[bd] | t[riple] | e[fi] | p[ci]] \ [[,]f[orce] |