Skip to content

L
linux-davinci
Commit d802ab98 authored by Andi Kleen's avatar Andi Kleen Committed by Andi Kleen
Browse files
Options

[PATCH] Document iommu=panic 

Signed-off-by: default avatarAndi Kleen <ak@suse.de>
parent ded318ec
Hide whitespace changes
Inline Side-by-side
Showing with 2 additions and 0 deletions
Documentation/x86_64/boot-options.txt
View file @ d802ab98
......@@ -203,6 +203,7 @@ IOMMU
When off all DMA over >4GB is forced through an IOMMU or bounce
buffering.
nodac Forbid DMA >4GB
panic Always panic when IOMMU overflows
swiotlb=pages[,force]
......
arch/x86_64/kernel/pci-dma.c
View file @ d802ab98
......@@ -245,6 +245,7 @@ EXPORT_SYMBOL(dma_set_mask);
noaperture Don't touch the aperture for AGP.
allowdac Allow DMA >4GB
nodac Forbid DMA >4GB
panic Force panic when IOMMU overflows
*/
__init int iommu_setup(char *p)
{
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment