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authorBjörn Töpel <bjorn.topel@gmail.com>2019-12-16 12:13:36 +0300
committerDaniel Borkmann <daniel@iogearbox.net>2019-12-19 18:03:30 +0300
commit7d1ef13fea2b66bb466592a7855b33181c85ec5f (patch)
tree3f9ede09afc50ed161f939f27bab5e54a607779e /scripts/stackdelta
parentf1003b787c00fbaa4b11619c6b23a885bfce8f07 (diff)
downloadlinux-7d1ef13fea2b66bb466592a7855b33181c85ec5f.tar.xz
riscv, bpf: Add support for far branching
This commit adds branch relaxation to the BPF JIT, and with that support for far (offset greater than 12b) branching. The branch relaxation requires more than two passes to converge. For most programs it is three passes, but for larger programs it can be more. Signed-off-by: Björn Töpel <bjorn.topel@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Luke Nelson <lukenels@cs.washington.edu> Link: https://lore.kernel.org/bpf/20191216091343.23260-3-bjorn.topel@gmail.com
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