From patchwork Thu Oct 14 14:25:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenz Bauer X-Patchwork-Id: 12558649 X-Patchwork-Delegate: bpf@iogearbox.net 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 77AEDC433F5 for ; Thu, 14 Oct 2021 14:26:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6124960EDF for ; Thu, 14 Oct 2021 14:26:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231849AbhJNO2O (ORCPT ); Thu, 14 Oct 2021 10:28:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39326 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231822AbhJNO2M (ORCPT ); Thu, 14 Oct 2021 10:28:12 -0400 Received: from mail-wr1-x432.google.com (mail-wr1-x432.google.com [IPv6:2a00:1450:4864:20::432]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4F073C061570 for ; Thu, 14 Oct 2021 07:26:07 -0700 (PDT) Received: by mail-wr1-x432.google.com with SMTP id r7so20120178wrc.10 for ; Thu, 14 Oct 2021 07:26:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cloudflare.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=RRur22NBusGD90t4t5587ekzz3x5I1RHcVLT1FRWOPw=; b=RmhVf07oF6025wnab8G9e3JeuNPyTuS8nYqhI375yVQIL0U9eUmLhzjtuwOVtNWage l9C1jkYM8uhpYDHf9otaq/XTvm2rgfq0akCikV7qkC4iTfaB4nKogtvA+vhRnruVnbD+ cOkkxtYNiiEdWIWE4OgPf56KWAs6Yw/rBVpRQ= 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=RRur22NBusGD90t4t5587ekzz3x5I1RHcVLT1FRWOPw=; b=2d2Trox4IdSootnlVivkno7C/hpnheW4lbhK7aKCDPnMqQfpAiZqQ2VLlzTOkb4a4Z gXwlhNLaVA4zZrPh/jPCAwWS5UfSNL7jJfuoBc0DhC0lR5iN9gBXlx4UhqkVC1NUr9xe 3NtNFo/Hssz+X+b3yJNdIplxyQNYOHfF+L/i5WBylh3XmiVC+zyvdp7vovXjoBKAG3OL m4Rsy6q/T/5kepZfOAMyjBcqNm7nL+2pVzGhuVIsHi0z2FLjtx8RWwa7WTUlf9zPd9oC 9LDZzQ/jKP2t7OSkJzQHsvwREIM/hy+aiTONTmG9dognGLzyWEqKqvH/HO2f1zKNcuu5 87VA== X-Gm-Message-State: AOAM5327knjLXGf5QXFbNDBiCPM1fxrZb0dWj6DKIh5vSukSBj9Joy9U gyU0UDwrVVU8C0L6DqSNrQp7Yw== X-Google-Smtp-Source: ABdhPJwA6roeFKn/hKn+FsDIjFD09EJZXyjCtR2peO46ZQ2mwsy86VrESVOK+e2yhDFIHOma2liu8w== X-Received: by 2002:a05:6000:1aca:: with SMTP id i10mr7234743wry.207.1634221565929; Thu, 14 Oct 2021 07:26:05 -0700 (PDT) Received: from antares.. (4.4.a.7.5.8.b.d.d.b.6.7.4.d.a.6.f.f.6.2.a.5.a.7.0.b.8.0.1.0.0.2.ip6.arpa. [2001:8b0:7a5a:26ff:6ad4:76bd:db85:7a44]) by smtp.gmail.com with ESMTPSA id e8sm3731111wrg.48.2021.10.14.07.26.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 Oct 2021 07:26:05 -0700 (PDT) From: Lorenz Bauer To: nicolas.dichtel@6wind.com, luke.r.nels@gmail.com, Daniel Borkmann , Alexei Starovoitov , Zi Shen Lim , Catalin Marinas , Will Deacon , Andrii Nakryiko Cc: kernel-team@cloudflare.com, Lorenz Bauer , netdev@vger.kernel.org, bpf@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 2/3] bpf: define bpf_jit_alloc_exec_limit for arm64 JIT Date: Thu, 14 Oct 2021 15:25:52 +0100 Message-Id: <20211014142554.53120-3-lmb@cloudflare.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211014142554.53120-1-lmb@cloudflare.com> References: <20211014142554.53120-1-lmb@cloudflare.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: bpf@iogearbox.net Expose the maximum amount of useable memory from the arm64 JIT. Signed-off-by: Lorenz Bauer --- arch/arm64/net/bpf_jit_comp.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c index 41c23f474ea6..803e7773fa86 100644 --- a/arch/arm64/net/bpf_jit_comp.c +++ b/arch/arm64/net/bpf_jit_comp.c @@ -1136,6 +1136,11 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog) return prog; } +u64 bpf_jit_alloc_exec_limit(void) +{ + return BPF_JIT_REGION_SIZE; +} + void *bpf_jit_alloc_exec(unsigned long size) { return __vmalloc_node_range(size, PAGE_SIZE, BPF_JIT_REGION_START,