Messages in this thread | | | Subject | Re: [PATCH 00/15] Add support for clang LTO | From | Marc Zyngier <> | Date | Thu, 9 Nov 2017 11:03:45 +0000 |
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On 09/11/17 10:54, AKASHI Takahiro wrote: > On Sat, Nov 04, 2017 at 02:13:04AM +0000, Mark Rutland wrote: >> On Fri, Nov 03, 2017 at 12:56:47PM -0700, Sami Tolvanen wrote: >>> On Fri, Nov 03, 2017 at 07:26:35PM +0000, Mark Rutland wrote: >>>> I guess that in Google you haven't tested on a platform with EL2 >>>> available? >>> >>> Correct. I'll look into this and include a fix in v2. Does this work on a >>> clang build without LTO? >> >> I saw this on v4.14-rc7, with patch 7 (-mno-implicit-float), but no other >> patches from this series (i.e. no LTO). > > > Add -fno-jump-tables to ccflags-y of arch/arm64/kvm/hyp/Makefile. > Without this option, clang generates a branch instruction (br x11) > to an absolute (EL1) virtual address.
Instead of adding more compiler flags to the Makefile, is there any way to have that as a function attribute?
Thanks,
M. -- Jazz is not dead. It just smells funny...
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