Messages in this thread | | | From | Nick Desaulniers <> | Date | Mon, 24 Feb 2020 14:01:38 -0800 | Subject | Re: [PATCH 0/2] Stop generating .eh_frame sections |
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On Mon, Feb 24, 2020 at 1:53 PM Arvind Sankar <nivedita@alum.mit.edu> wrote: > > On Mon, Feb 24, 2020 at 12:49:03PM -0800, Nick Desaulniers wrote: > > On Sun, Feb 23, 2020 at 11:37 AM Arvind Sankar <nivedita@alum.mit.edu> wrote: > > > > > > In three places in the x86 kernel we are currently generating .eh_frame > > > sections only to discard them later via linker script. This is in the > > > boot code (setup.elf), the realmode trampoline (realmode.elf) and the > > > compressed kernel. > > > > > > Implement Fangrui and Nick's suggestion [1] to fix KBUILD_CFLAGS by > > > adding -fno-asynchronous-unwind-tables to avoid generating .eh_frame > > > sections in the first place, rather than discarding it in the linker > > > script. > > > > > > Arvind Sankar (2): > > > arch/x86: Use -fno-asynchronous-unwind-tables to suppress .eh_frame sections > > > arch/x86: Drop unneeded linker script discard of .eh_frame > > > > Thanks for the series! I've left some feedback for a v2. Would you > > mind please including a revert of ("x86/boot/compressed: Remove > > unnecessary sections from bzImage") in a v2 series? Our CI being red > > through the weekend is no bueno. > > Sorry about that. Boris already updated tip:x86/boot to only discard > eh_frame, so your CI should be ok at least now.
Yep: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?h=x86/boot&id=0eea39a234dc52063d14541fabcb2c64516a2328 Looks like our daily CI ran 6 hours ago just missed it: https://travis-ci.com/ClangBuiltLinux/continuous-integration/jobs/290435629 Thanks for the fix!
-- Thanks, ~Nick Desaulniers
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