AMD IOMMU: implement lazy IO/TLB flushing

Browse source

The IO/TLB flushing on every unmaping operation is the most expensive
part in AMD IOMMU code and not strictly necessary. It is sufficient to
do the flush before any entries are reused. This is patch implements
lazy IO/TLB flushing which does exactly this.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

This commit is contained in:

Joerg Roedel 2008-09-04 18:40:05 +02:00 • committed by Ingo Molnar

parent 2842e5bf31

commit 1c65577398

3 changed files with 31 additions and 5 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

26

arch/x86/kernel/amd_iommu.c

View file

7

arch/x86/kernel/amd_iommu_init.c

View file

3

include/asm-x86/amd_iommu_types.h

View file