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-rw-r--r--Documentation/admin-guide/kernel-parameters.txt15
1 files changed, 8 insertions, 7 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index b2c7b2f01..e6f0570cf 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -3283,6 +3283,7 @@
reg_file_data_sampling=off [X86]
retbleed=off [X86]
spec_store_bypass_disable=off [X86,PPC]
+ spectre_bhi=off [X86]
spectre_v2_user=off [X86]
srbds=off [X86,INTEL]
ssbd=force-off [ARM64]
@@ -5734,16 +5735,13 @@
See Documentation/admin-guide/laptops/sonypi.rst
spectre_bhi= [X86] Control mitigation of Branch History Injection
- (BHI) vulnerability. Syscalls are hardened against BHI
- reglardless of this setting. This setting affects the
+ (BHI) vulnerability. This setting affects the
deployment of the HW BHI control and the SW BHB
clearing sequence.
- on - unconditionally enable.
- off - unconditionally disable.
- auto - (default) enable hardware mitigation
- (BHI_DIS_S) if available, otherwise enable
- alternate mitigation in KVM.
+ on - (default) Enable the HW or SW mitigation
+ as needed.
+ off - Disable the mitigation.
spectre_v2= [X86] Control mitigation of Spectre variant 2
(indirect branch speculation) vulnerability.
@@ -6605,6 +6603,9 @@
pause after every control message);
o = USB_QUIRK_HUB_SLOW_RESET (Hub needs extra
delay after resetting its port);
+ p = USB_QUIRK_SHORT_SET_ADDRESS_REQ_TIMEOUT
+ (Reduce timeout of the SET_ADDRESS
+ request from 5000 ms to 500 ms);
Example: quirks=0781:5580:bk,0a5c:5834:gij
usbhid.mousepoll=