linux/Documentation/x86/x86_64
Robin Murphy a8a4c98fc9 x86/dma/amd-gart: Stop resizing dma_debug_entry pool
dma-debug is now capable of adding new entries to its pool on-demand if
the initial preallocation was insufficient, so the IOMMU_LEAK logic no
longer needs to explicitly change the pool size. This does lose it the
ability to save a couple of megabytes of RAM by reducing the pool size
below its default, but it seems unlikely that that is a realistic
concern these days (or indeed that anyone is actively debugging AGP
drivers' DMA usage any more). Getting rid of dma_debug_resize_entries()
will make room for further streamlining in the dma-debug code itself.

Removing the call reveals quite a lot of cruft which has been useless
for nearly a decade since commit 19c1a6f576 ("x86 gart: reimplement
IOMMU_LEAK feature by using DMA_API_DEBUG"), including the entire
'iommu=leak' parameter, which controlled nothing except whether
dma_debug_resize_entries() was called or not.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Qian Cai <cai@lca.pw>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-12-11 14:32:12 +01:00
..
5level-paging.txt x86/mm: Allow to boot without LA57 if CONFIG_X86_5LEVEL=y 2018-02-16 10:48:49 +01:00
boot-options.txt x86/dma/amd-gart: Stop resizing dma_debug_entry pool 2018-12-11 14:32:12 +01:00
cpu-hotplug-spec
fake-numa-for-cpusets Documenation: update cgroup's document path 2016-08-03 15:43:58 -06:00
machinecheck x86/Documentation: Fix various typos in Documentation/x86/ files 2016-07-01 10:00:10 +02:00
mm.txt x86/mm: Move LDT remap out of KASLR region on 5-level paging 2018-11-06 21:35:11 +01:00
uefi.txt