On 04/15/2015 08:57 AM, Dave Young wrote:
Again, I think it is bad to use old page table, below issues need consider:
1) make sure old page table are reliable across crash
2) do not allow writing oldmem after crash
Please correct me if I'm wrong, or if above is not doable I think I will vote for
resetting pci bus.
Thanks
Dave
Hi Dave,
When updating the context tables, we have to write their address to root
tables, this will cause writing to old mem.
Resetting the pci bus has been discussed, please check this:
http://lists.infradead.org/pipermail/kexec/2014-October/012752.html
https://lkml.org/lkml/2014/10/21/890
Thanks
Zhenhua
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