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| author | Yinghai Lu <yinghai@kernel.org> | 2009-12-14 03:52:15 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-12-14 08:57:40 +0100 |
| commit | f3eee54276dfd1117fd94259f2b4a38388264724 (patch) | |
| tree | b51cb4d1dc14be52d6b91f59a6e27800e0c8a9cb /arch/x86/kernel/pci-gart_64.c | |
| parent | x86: Move swiotlb initialization before dma32_free_bootmem (diff) | |
| download | linux-f3eee54276dfd1117fd94259f2b4a38388264724.tar.xz linux-f3eee54276dfd1117fd94259f2b4a38388264724.zip | |
x86: Gart: fix breakage due to IOMMU initialization cleanup
This fixes the following breakage of the commit
75f1cdf1dda92cae037ec848ae63690d91913eac:
- GART systems that don't AGP with broken BIOS and more than 4GB
memory are forced to use swiotlb. They can allocate aperture by
hand and use GART.
- GART systems without GAP must disable GART on shutdown.
- swiotlb usage is forced by the boot option,
gart_iommu_hole_init() is not called, so we disable GART
early_gart_iommu_check().
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
LKML-Reference: <1260759135-6450-3-git-send-email-fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/pci-gart_64.c')
| -rw-r--r-- | arch/x86/kernel/pci-gart_64.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c index e6a0d402f171..56c0e730d3fe 100644 --- a/arch/x86/kernel/pci-gart_64.c +++ b/arch/x86/kernel/pci-gart_64.c @@ -710,7 +710,8 @@ static void gart_iommu_shutdown(void) struct pci_dev *dev; int i; - if (no_agp) + /* don't shutdown it if there is AGP installed */ + if (!no_agp) return; for (i = 0; i < num_k8_northbridges; i++) { |