Re: [PATCH retry] intel-iommu:make identity_map default for crash dump

On Tue, 2011-11-01 at 17:19 +0800, Dave Young wrote: > kdump kernel sometimes will get DMAR faults which > is caused by random in-flight dma from 1st kernel > > Here make the identity_mapping as default for this case So you want to *allow* the random in-flight DMA? And with an identity mapping it

Re: [PATCH v2] kdump: Fix crash_kexec - smp_send_stop race in panic

On Mon, Oct 31, 2011 at 01:34:19PM +0100, Michael Holzheu wrote: > Hello Andrew, hello linux-arch, > > > Well OK. Maybe some architectures do have this problem - who would > > notice? If that is the case, we just made the failure cases much more > > common. Could you check, please? > > @linux-

Re: [PATCH retry] intel-iommu:make identity_map default for crash dump

On 11/01/2011 05:34 PM, David Woodhouse wrote: > On Tue, 2011-11-01 at 17:19 +0800, Dave Young wrote: >> kdump kernel sometimes will get DMAR faults which >> is caused by random in-flight dma from 1st kernel >> >> Here make the identity_mapping as default for this case > > So you want to *allow*

[PATCH retry] intel-iommu:make identity_map default for crash dump

kdump kernel sometimes will get DMAR faults which is caused by random in-flight dma from 1st kernel Here make the identity_mapping as default for this case Signed-off-by: Dave Young --- drivers/iommu/intel-iommu.c |3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) --- linux-2.6.orig/