(2012/10/03 4:37), Andi Kleen wrote:
Takao Indoh <[email protected]> writes:
These patches reset PCIe devices at boot time to address DMA problem on
kdump with iommu. When "reset_devices" is specified, a hot reset is
triggered on each PCIe root port and downstream port to reset its
downstream endpoint.
Great. I've been pondering this for a long time, but you did finally
implement it. I hope this will make kdump a lot more reliable at least
on the systems that support per port reset.
Actually I got the idea of this patch from your comment below;-)
http://permalink.gmane.org/gmane.linux.network/162414
Now the only question is: why make it a option and not default?
Except kdump I don't know the situation where this reset is useful, so I
introduced it as option so that it works only during kdump.
Thanks,
Takao Indoh
_______________________________________________
kexec mailing list
[email protected]
http://lists.infradead.org/mailman/listinfo/kexec
