Re: [PATCH 20/21] Kbuild, lto: Add Link Time Optimization support

2018-01-28 Thread Andi Kleen
> > kallsyms failure: relative symbol value 0x8100 out of > range in relative mode > > I seem to get that all the time here, and have also disabled it for now, > but it sounds important (and breaks the build). Need to take a look at it. I had some patches that completely revamped k

Re: [PATCH 20/21] Kbuild, lto: Add Link Time Optimization support

2018-01-27 Thread Arnd Bergmann
On Sat, Jan 27, 2018 at 1:55 AM, Andi Kleen wrote: > On Sat, Jan 27, 2018 at 01:15:49AM +0100, Arnd Bergmann wrote: >> On Mon, Nov 27, 2017 at 10:34 PM, Andi Kleen wrote: >> > From: Andi Kleen >> > - Add a new LDFINAL variable that controls the final link >> > for vmlinux or module. In this case

Re: [PATCH 20/21] Kbuild, lto: Add Link Time Optimization support

2018-01-26 Thread Andi Kleen
On Sat, Jan 27, 2018 at 01:15:49AM +0100, Arnd Bergmann wrote: > On Mon, Nov 27, 2017 at 10:34 PM, Andi Kleen wrote: > > From: Andi Kleen > > - Add a new LDFINAL variable that controls the final link > > for vmlinux or module. In this case we call gcc-ld instead > > of ld, to run the LTO step. >

Re: [PATCH 20/21] Kbuild, lto: Add Link Time Optimization support

2018-01-26 Thread Arnd Bergmann
On Mon, Nov 27, 2017 at 10:34 PM, Andi Kleen wrote: > From: Andi Kleen > - Add a new LDFINAL variable that controls the final link > for vmlinux or module. In this case we call gcc-ld instead > of ld, to run the LTO step. When I tried this out on allmodconfig (following the lwn article), I ran i