Re: [PATCH v4.4 V2 25/43] arm64: Move BP hardening to check_and_switch_context

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On 01-08-19, 08:57, Greg KH wrote:
> On Thu, Aug 01, 2019 at 12:05:44PM +0530, Viresh Kumar wrote:
> > On 01-08-19, 07:30, Julien Thierry wrote:
> > > I must admit I am not familiar with backport/stable process enough. But
> > > personally I think the your suggestion seems more sensible than
> > > backporting 4 patches.
> > > 
> > > Or you can maybe ignore patch 25 and say in patch 24 that among the
> > > changes made for the 4.4 codebase, the call arm64_apply_bp_hardening()
> > > was moved from post_ttbr_update_workaround as it doesn't exist and
> > > placed in check_and_switch_context() as it is its final destination.
> > 
> > Done that and dropped the other two patches.
> > 
> > > However, I really don't know what's the best way to proceed according to
> > > existing practices. So input from someone else would be welcome.
> > 
> > Lets see if someone comes up and ask me to do something else :)
> 
> Keeping the same patches that upstream has is almost always the better
> thing to do in the long-run.

That would require two additional patches to be backported, 22 and 23
from this series. From your suggestion it seems that keeping them is
better here ?

-- 
viresh



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