46dd3d7d28
Commit 66d0d5a854a6 ("riscv: bpf: eliminate zero extension code-gen")
added the new zero-extension optimization for some BPF ALU operations.
Since then, bugs in the JIT that have been fixed in the bpf tree require
this optimization to be added to other operations: commit 1e692f09e091
("bpf, riscv: clear high 32 bits for ALU32 add/sub/neg/lsh/rsh/arsh"),
and commit fe121ee531d1 ("bpf, riscv: clear target register high 32-bits
for and/or/xor on ALU32").
Now that these have been merged to bpf-next, the zext optimization can
be enabled for the fixed operations.
Signed-off-by: Luke Nelson <luke.r.nels@gmail.com>
Cc: Song Liu <liu.song.a23@gmail.com>
Cc: Jiong Wang <jiong.wang@netronome.com>
Cc: Xi Wang <xi.wang@gmail.com>
Acked-by: Björn Töpel <bjorn.topel@gmail.com>
Acked-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.