From: Andi Kleen <[email protected]> Disable LTO for the BPF interpreter. This works around a gcc bug in the LTO partitioner that partitions the jumptable from the BPF interpreter into a different LTO unit. This in term causes assembler errors because the jump table contains references to the code labels in the original file.
gcc problem tracked in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50676 Signed-off-by: Andi Kleen <[email protected]> Signed-off-by: Tom Zanussi <[email protected]> --- kernel/bpf/Makefile | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/kernel/bpf/Makefile b/kernel/bpf/Makefile index 1327258..9cf616b 100644 --- a/kernel/bpf/Makefile +++ b/kernel/bpf/Makefile @@ -2,3 +2,8 @@ obj-y := core.o obj-$(CONFIG_BPF_SYSCALL) += syscall.o verifier.o inode.o helpers.o obj-$(CONFIG_BPF_SYSCALL) += hashtab.o arraymap.o + +# various version of gcc have a LTO bug where the &&labels used in the +# BPF interpreter can cause linker errors when spread incorrectly over +# partitions. Disable LTO for BPF for now +CFLAGS_core.o = $(DISABLE_LTO) -- 2.6.6 -- _______________________________________________ linux-yocto mailing list [email protected] https://lists.yoctoproject.org/listinfo/linux-yocto
