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x86: Move swiotlb initialization before dma32_free_bootmem 

The commit 75f1cdf1dd introduced a
bug that we initialize SWIOTLB right after dma32_free_bootmem so
we wrongly steal memory area allocated for GART with broken BIOS
earlier.

This moves swiotlb initialization before dma32_free_bootmem().

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: yinghai@kernel.org
LKML-Reference: <1260759135-6450-2-git-send-email-fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
FUJITA Tomonori 2009-12-14 11:52:14 +09:00 committed by Ingo Molnar
parent eba11d6da7
commit f4780ca005
1 changed files with 4 additions and 1 deletions
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5
arch/x86/kernel/pci-dma.c
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@ -120,11 +120,14 @@ static void __init dma32_free_bootmem(void)
void __init pci_iommu_alloc(void)
{
int use_swiotlb;
use_swiotlb = pci_swiotlb_init();
#ifdef CONFIG_X86_64
/* free the range so iommu could get some range less than 4G */
dma32_free_bootmem();
#endif
if (pci_swiotlb_init())
if (use_swiotlb)
return;
gart_iommu_hole_init();