| kernel-parameters.txt (ca31fef11dc83e672415d5925a134749761329bd) | kernel-parameters.txt (b7fe54f6c2d437082dcbecfbd832f38edd9caaf4) |
|---|---|
| 1 acpi= [HW,ACPI,X86,ARM64] 2 Advanced Configuration and Power Interface 3 Format: { force | on | off | strict | noirq | rsdt | 4 copy_dsdt } 5 force -- enable ACPI if default was off 6 on -- enable ACPI but allow fallback to DT [arm64] 7 off -- disable ACPI if default was on 8 noirq -- do not use ACPI for IRQ routing --- 2407 unchanged lines hidden (view full) --- 2416 never: Disables the mitigation 2417 2418 Default is cond (do L1 cache flush in specific instances) 2419 2420 kvm-intel.vpid= [KVM,Intel] Disable Virtual Processor Identification 2421 feature (tagged TLBs) on capable Intel chips. 2422 Default is 1 (enabled) 2423 | 1 acpi= [HW,ACPI,X86,ARM64] 2 Advanced Configuration and Power Interface 3 Format: { force | on | off | strict | noirq | rsdt | 4 copy_dsdt } 5 force -- enable ACPI if default was off 6 on -- enable ACPI but allow fallback to DT [arm64] 7 off -- disable ACPI if default was on 8 noirq -- do not use ACPI for IRQ routing --- 2407 unchanged lines hidden (view full) --- 2416 never: Disables the mitigation 2417 2418 Default is cond (do L1 cache flush in specific instances) 2419 2420 kvm-intel.vpid= [KVM,Intel] Disable Virtual Processor Identification 2421 feature (tagged TLBs) on capable Intel chips. 2422 Default is 1 (enabled) 2423 |
| 2424 l1d_flush= [X86,INTEL] 2425 Control mitigation for L1D based snooping vulnerability. 2426 2427 Certain CPUs are vulnerable to an exploit against CPU 2428 internal buffers which can forward information to a 2429 disclosure gadget under certain conditions. 2430 2431 In vulnerable processors, the speculatively 2432 forwarded data can be used in a cache side channel 2433 attack, to access data to which the attacker does 2434 not have direct access. 2435 2436 This parameter controls the mitigation. The 2437 options are: 2438 2439 on - enable the interface for the mitigation 2440 |
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| 2424 l1tf= [X86] Control mitigation of the L1TF vulnerability on 2425 affected CPUs 2426 2427 The kernel PTE inversion protection is unconditionally 2428 enabled and cannot be disabled. 2429 2430 full 2431 Provides all available mitigations for the --- 3943 unchanged lines hidden --- | 2441 l1tf= [X86] Control mitigation of the L1TF vulnerability on 2442 affected CPUs 2443 2444 The kernel PTE inversion protection is unconditionally 2445 enabled and cannot be disabled. 2446 2447 full 2448 Provides all available mitigations for the --- 3943 unchanged lines hidden --- |