diff options
Diffstat (limited to 'Documentation/admin-guide/kernel-parameters.txt')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index ad929b807b26..ff5018b39ed0 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -1212,26 +1212,28 @@ Format: {"off" | "on" | "skip[mbr]"} efi= [EFI] - Format: { "old_map", "nochunk", "noruntime", "debug", - "nosoftreserve", "disable_early_pci_dma", - "no_disable_early_pci_dma" } - old_map [X86-64]: switch to the old ioremap-based EFI - runtime services mapping. [Needs CONFIG_X86_UV=y] + Format: { "debug", "disable_early_pci_dma", + "nochunk", "noruntime", "nosoftreserve", + "novamap", "no_disable_early_pci_dma", + "old_map" } + debug: enable misc debug output. + disable_early_pci_dma: disable the busmaster bit on all + PCI bridges while in the EFI boot stub. nochunk: disable reading files in "chunks" in the EFI boot stub, as chunking can cause problems with some firmware implementations. noruntime : disable EFI runtime services support - debug: enable misc debug output nosoftreserve: The EFI_MEMORY_SP (Specific Purpose) attribute may cause the kernel to reserve the memory range for a memory mapping driver to claim. Specify efi=nosoftreserve to disable this reservation and treat the memory by its base type (i.e. EFI_CONVENTIONAL_MEMORY / "System RAM"). - disable_early_pci_dma: Disable the busmaster bit on all - PCI bridges while in the EFI boot stub + novamap: do not call SetVirtualAddressMap(). no_disable_early_pci_dma: Leave the busmaster bit set on all PCI bridges while in the EFI boot stub + old_map [X86-64]: switch to the old ioremap-based EFI + runtime services mapping. [Needs CONFIG_X86_UV=y] efi_no_storage_paranoia [EFI; X86] Using this parameter you can use more than 50% of @@ -2791,7 +2793,7 @@ touchscreen support is not enabled in the mainstream kernel as of 2.6.30, a preliminary port can be found in the "bleeding edge" mini2440 support kernel at - http://repo.or.cz/w/linux-2.6/mini2440.git + https://repo.or.cz/w/linux-2.6/mini2440.git mitigations= [X86,PPC,S390,ARM64] Control optional mitigations for |