From patchwork Thu Oct 28 13:20:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= X-Patchwork-Id: 12590137 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 20C59C433F5 for ; Thu, 28 Oct 2021 13:21:00 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E38BB60F56 for ; Thu, 28 Oct 2021 13:20:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org E38BB60F56 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=n7FBofelty/qq32cKF6CssX/tKN6DC1VMVL1Xr1PWcE=; b=gP9lHIJBwhzCGs P7k3rU89Kb8ZPITz9kcOsVaRDu9YLVpPxwUlZemyFjhbmxjhLjKQSe6qPYe/3Jzx6qHPobRGL87CJ fxsO2fFtPT4eUbnwKVVCV+4xQzd3s9e50oaopm5EiHaPgqgjW3Lqj+L1eAEaTSU7KyUrLR55vdAiI XwfByKMggNOsuc/8HdE41xaRTkZF7FKIIo/OUJRN6cu/erwKAp8Y8xtnXKMpjvdzBcLEC9fFDQgzL 2Y+IQQ5yuHxXei2ZaRFFxfOyZpdmmxAoO8Ep8m5+zkpckHdu9hujWqKrrtPmDmMWWaTZywXYXHl1u 8Te5Kfv5RoaIhEjKSp8A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mg5Ku-007uXE-AB; Thu, 28 Oct 2021 13:20:52 +0000 Received: from mail-lf1-f43.google.com ([209.85.167.43]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mg5Kq-007uV3-HM for linux-riscv@lists.infradead.org; Thu, 28 Oct 2021 13:20:49 +0000 Received: by mail-lf1-f43.google.com with SMTP id b32so10350990lfv.0 for ; Thu, 28 Oct 2021 06:20:48 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=O/AJBEW3vyVrTUMTRP/ONhgseLgot5lKkfZZ3GS+nfA=; b=XMOIEQwCbrIonabB3v7HWXWlplAxsyvhOU73wPOcsJvbEI/Zo+gx9//U8d3teNMe/d C7MXn2yyBEvOrSWgGq21u7PsTpYAF7bD7/GLx3eLHJTQ90JeMSer6/sreuxpxBkjjdwC j6EbRfsP0eUenUG51eeYqAIDwLvf4FYdU8jP1Zffa3XbLVbkORI2fS05DurpgPryu/71 HTMajsj/jGdE3yd4Dolg6XKcAC3WE8K9MQT8XgkMQiADxyCQv6oF2DYgFWifzFBQIHk+ 7nwhR/P21C98yQ+cybe88WOGD1KtcaEYOVrUskTgyYksh3yxQl72zjJShB/r9Dms2Xeg Mfng== X-Gm-Message-State: AOAM532pqV4KS9bu4TiugAPzi3Fmcwm6RTYUcAIu8/fHLpvM2ednInhE difjcuLgERYFqy0QCP6Ee+o= X-Google-Smtp-Source: ABdhPJxZcJ13N8X0a3vFeqXrp6hDAqd5+pSCoHgE77DOaEKKyBW0zArRRHgSPWuy87B3rp/8uizNtw== X-Received: by 2002:a05:6512:2184:: with SMTP id b4mr4206060lft.663.1635427246654; Thu, 28 Oct 2021 06:20:46 -0700 (PDT) Received: from kladdkakan.. ([185.213.154.234]) by smtp.gmail.com with ESMTPSA id o9sm309616lfk.292.2021.10.28.06.20.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Oct 2021 06:20:45 -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==?= , linux-riscv@lists.infradead.org Subject: [PATCH bpf-next 1/4] riscv, bpf: Increase the maximum number of iterations Date: Thu, 28 Oct 2021 15:20:38 +0200 Message-Id: <20211028132041.516820-2-bjorn@kernel.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20211028132041.516820-1-bjorn@kernel.org> References: <20211028132041.516820-1-bjorn@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211028_062048_598385_E40A9B7D X-CRM114-Status: GOOD ( 10.39 ) 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) {