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authorPuranjay Mohan <puranjay12@gmail.com>2023-08-31 13:12:28 +0000
committerPalmer Dabbelt <palmer@rivosinc.com>2023-09-06 06:26:06 -0700
commitcad539baa48ff257b598000a90db2b7edd4b2dd5 (patch)
treeeee232a8bf720d79d5c2a19e76df01658e593658 /net
parent9721873c3c023254f04138bbb21d539b4f0f0ad6 (diff)
riscv: implement a memset like function for text
The BPF JIT needs to write invalid instructions to RX regions of memory to invalidate removed BPF programs. This needs a function like memset() that can work with RX memory. Implement patch_text_set_nosync() which is similar to text_poke_set() of x86. Signed-off-by: Puranjay Mohan <puranjay12@gmail.com> Reviewed-by: Pu Lehui <pulehui@huawei.com> Acked-by: Björn Töpel <bjorn@kernel.org> Tested-by: Björn Töpel <bjorn@rivosinc.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/r/20230831131229.497941-4-puranjay12@gmail.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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