Re: [PATCH v7u1 26/31] x86: Don't enable swiotlb if there is notenough ram for it
From: Yinghai Lu
Date: Fri Jan 04 2013 - 23:10:20 EST
On Fri, Jan 4, 2013 at 6:02 PM, Shuah Khan <shuahkhan@xxxxxxxxx> wrote:
> I applied your patch to 3.6.11 and changed the panic() to pr_info()
> and also changed enough_mem_for_swiotlb() to always return false to
> simulate not enough memory condition as this system does have enough
> So at least on this AMD system, your patch will result in a panic.
ok, thanks for testing.
if enough_mem_for_swiotlb() return false really, allocating buffer
for swiotlb with bootmem would panic already, right?
so this patch just delay the panic a while for AMD system with
unhandled devices by IOMMU.
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