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([193.138.218.162]) by smtp.gmail.com with ESMTPSA id o17sm49680lfo.176.2021.10.28.09.11.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Oct 2021 09:11:04 -0700 (PDT) From: =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= To: ast@kernel.org, daniel@iogearbox.net, netdev@vger.kernel.org, bpf@vger.kernel.org Cc: =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= , luke.r.nels@gmail.com, xi.wang@gmail.com, linux-riscv@lists.infradead.org Subject: [PATCH bpf-next v2 1/4] riscv, bpf: Increase the maximum number of iterations Date: Thu, 28 Oct 2021 18:10:54 +0200 Message-Id: <20211028161057.520552-2-bjorn@kernel.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20211028161057.520552-1-bjorn@kernel.org> References: <20211028161057.520552-1-bjorn@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211028_091107_470987_49688CEF X-CRM114-Status: GOOD ( 10.38 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Now that BPF programs can be up to 1M instructions, it is not uncommon that a program requires more than the current 16 iterations to converge. Bump it to 32, which is enough for selftests/bpf, and test_bpf.ko. Signed-off-by: Björn Töpel --- arch/riscv/net/bpf_jit_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/riscv/net/bpf_jit_core.c b/arch/riscv/net/bpf_jit_core.c index 7ccc809f2c19..ef9fcf6ea749 100644 --- a/arch/riscv/net/bpf_jit_core.c +++ b/arch/riscv/net/bpf_jit_core.c @@ -11,7 +11,7 @@ #include "bpf_jit.h" /* Number of iterations to try until offsets converge. */ -#define NR_JIT_ITERATIONS 16 +#define NR_JIT_ITERATIONS 32 static int build_body(struct rv_jit_context *ctx, bool extra_pass, int *offset) {