Lines Matching +full:pci +full:- +full:iommu

1 .. SPDX-License-Identifier: GPL-2.0
39 		Do not opt-in to Local MCE delivery. Use legacy method
55 		Don't overwrite the bios-set CMCI threshold. This boot option
62 		Force-enable recoverable machine check code paths
73 	Use IO-APIC. Default
76 	Don't use the IO-APIC.
85 	See Documentation/arch/x86/i386/IO-APIC.rst
91 	Don't check the IO-APIC timer. This can work around
141       pci
142         Use a write to the PCI config space register 0xcf9 to trigger reboot.
154      There are some built-in platform specific "quirks" - you may see:
157      newer BIOS, or newer board) using this option will ignore the built-in
170     Don't parse the HMAT table for NUMA setup, or soft-reserved memory
194 PCI  chapter
197   pci=off
198     Don't use PCI
199   pci=conf1
201   pci=conf2
203   pci=rom
205   pci=assign-busses
207   pci=irqmask=MASK
208     Set PCI interrupt mask to MASK
209   pci=lastbus=NUMBER
211   pci=noacpi
212     Don't use ACPI to set up PCI interrupt routing.
214 IOMMU (input/output memory management unit)
216 Multiple x86-64 PCI-DMA mapping implementations exist, for example:
218    1. <kernel/dma/direct.c>: use no hardware/software IOMMU at all
220       Kernel boot message: "PCI-DMA: Disabling IOMMU"
222    2. <arch/x86/kernel/amd_gart_64.c>: AMD GART based hardware IOMMU.
223       Kernel boot message: "PCI-DMA: using GART IOMMU"
225    3. <arch/x86_64/kernel/pci-swiotlb.c> : Software IOMMU implementation. Used
226       e.g. if there is no hardware IOMMU in the system and it is need because
227       you have >3GB memory or told the kernel to us it (iommu=soft))
228       Kernel boot message: "PCI-DMA: Using software bounce buffering
233   iommu=[<size>][,noagp][,off][,force][,noforce]
237 General iommu options:
240       Don't initialize and use any kind of IOMMU.
242       Don't force hardware IOMMU usage when it is not needed. (default).
244       Force the use of the hardware IOMMU even when it is
249       of an available hardware IOMMU.
251 iommu options only relevant to the AMD GART hardware IOMMU:
256       Overwrite iommu off workarounds for specific chipsets.
258       Flush IOMMU on each allocation (default).
260       Don't use IOMMU fullflush.
265       Do scatter-gather (SG) merging. Implies "force" (experimental).
267       Don't do scatter-gather (SG) merging.
269       Ask the IOMMU not to touch the aperture for AGP.
273       Always panic when IOMMU overflows.
275 iommu options only relevant to the software bounce buffering (SWIOTLB) IOMMU
310      Do not enable SEV-SNP (applies to host/hypervisor only). Setting
312      users do not want to run SEV-SNP guests.