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    SubjectRe: [PATCH v2 0/9] x86: handle HW IOMMU initialization failure gracefully
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    On Tue, 10 Nov 2009 12:55:55 +0100
    Ingo Molnar <mingo@elte.hu> wrote:

    >
    > hm, one of the swiotlb patches caused this bootup crash:

    Sorry about that. I totally forgot about x86_32.

    the following patch fixes this? Sorry that I'm away from the workplace
    and can't test it.

    diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
    index a234e63..63eebee 100644
    --- a/arch/x86/kernel/pci-dma.c
    +++ b/arch/x86/kernel/pci-dma.c
    @@ -129,6 +129,8 @@ void __init pci_iommu_alloc(void)
    #ifdef CONFIG_X86_64
    /* free the range so iommu could get some range less than 4G */
    dma32_free_bootmem();
    +#else
    + dma_ops = &nommu_dma_ops;
    #endif
    pci_swiotlb_init();
    if (use_swiotlb)

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      Last update: 2009-11-10 13:39    [W:0.020 / U:91.956 seconds]
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