Messages in this thread | | | Date | Mon, 17 Dec 2018 23:50:20 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCH 0/7] ARM: hacks for link-time optimization |
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On Tue, Feb 20, 2018 at 10:59:47PM +0100, Arnd Bergmann wrote: > Hi Nico, all, > > I was playing with ARM link-time optimization handling earlier this > month, and eventually got it to build cleanly with randconfig kernels, > but ended up with a lot of ugly hacks to actually pull it off.
How are we dealing with the fact that LTO can break RCU in very subtle and scary ways?
Do we have a compiler guy on board that has given us a compiler switch that kills that optimization (and thereby guarantees that behaviour for future compilers etc..) ?
Also see the thread here:
https://lkml.kernel.org/r/20171116115810.GH9361@arm.com
(and yes, this is a fine example of how lore sucks for reading email)
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