linux/arch/riscv
Luke Nelson 0224b2acea bpf, riscv: Enable missing verifier_zext optimizations on RV64
Commit 66d0d5a854 ("riscv: bpf: eliminate zero extension code-gen")
added support for the verifier zero-extension optimization on RV64 and
commit 46dd3d7d28 ("bpf, riscv: Enable zext optimization for more
RV64G ALU ops") enabled it for more instruction cases.

However, BPF_LSH BPF_X and BPF_{LSH,RSH,ARSH} BPF_K are still missing
the optimization.

This patch enables the zero-extension optimization for these remaining
cases.

Co-developed-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Luke Nelson <luke.r.nels@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Björn Töpel <bjorn.topel@gmail.com>
Acked-by: Björn Töpel <bjorn.topel@gmail.com>
Link: https://lore.kernel.org/bpf/20200506000320.28965-2-luke.r.nels@gmail.com
2020-05-06 09:48:15 +02:00
..
boot RISC-V Patches for the 5.7 Merge Window, Part 1 2020-04-09 10:51:30 -07:00
configs RISC-V Patches for the 5.7 Merge Window, Part 1 2020-04-09 10:51:30 -07:00
include arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h> 2020-04-23 10:50:26 +09:00
kernel RISC-V Patches for the 5.7 Merge Window, Part 1 2020-04-09 10:51:30 -07:00
lib RISC-V Patches for the 5.7 Merge Window, Part 1 2020-04-09 10:51:30 -07:00
mm RISC-V Patches for the 5.7 Merge Window, Part 1 2020-04-09 10:51:30 -07:00
net bpf, riscv: Enable missing verifier_zext optimizations on RV64 2020-05-06 09:48:15 +02:00
Kbuild riscv: add arch/riscv/Kbuild 2019-08-30 17:34:00 -07:00
Kconfig Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-04-16 14:52:29 -07:00
Kconfig.debug RISC-V: Remove EARLY_PRINTK support 2018-12-17 10:23:46 -08:00
Kconfig.socs RISC-V Patches for the 5.7 Merge Window, Part 1 2020-04-09 10:51:30 -07:00
Makefile RISC-V Patches for the 5.7 Merge Window, Part 1 2020-04-09 10:51:30 -07:00