>>> On 04.01.18 at 21:21, <andrew.coop...@citrix.com> wrote: > DMA-ing to the stack is generally considered bad practice. In this case, if a > timeout occurs because of a sluggish device which is processing the request, > the completion notification will corrupt the stack of a subsequent deeper call > tree. > > Place the poll_slot in a percpu area and DMA to that instead. > > Note: This change does not address other issues with the current > implementation, such as once a timeout has been suffered, subsequent > completions can't be correlated with their requests. > > Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
Reviewed-by: Jan Beulich <jbeul...@suse.com> > Julien: This wants backporting to all releases, and therefore should be > considered for 4.10 at this point. Interesting remark at this point in time ;-) Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
