Re: [RFC PATCH 01/14] fs/proc/vmcore: Update read_from_oldmem() for user pointer

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, Dec 06, 2021 at 02:17:24PM +0000, Matthew Wilcox wrote:
> On Mon, Dec 06, 2021 at 03:04:51PM +0100, Christoph Hellwig wrote:
> > This looks like a huge mess.  What speak against using an iov_iter
> > here?
> 
> I coincidentally made a start on this last night.  Happy to stop.

Don't stop!

> What do you think to adding a generic copy_pfn_to_iter()?  Not sure
> which APIs to use to implement it ... some architectures have weird
> requirements about which APIs can be used for what kinds of PFNs.

Hmm.  I though kmap_local_pfn(_prot) is all we need?

_______________________________________________
kexec mailing list
kexec@xxxxxxxxxxxxxxxxxxx
http://lists.infradead.org/mailman/listinfo/kexec



[Index of Archives]     [LM Sensors]     [Linux Sound]     [ALSA Users]     [ALSA Devel]     [Linux Audio Users]     [Linux Media]     [Kernel]     [Gimp]     [Yosemite News]     [Linux Media]

  Powered by Linux