Patch Detail
get:
Show a patch.
patch:
Update a patch.
put:
Update a patch.
GET /api/1.2/patches/2221899/?format=api
{ "id": 2221899, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2221899/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/patch/20260410120319.853669871@kernel.org/", "project": { "id": 8, "url": "http://patchwork.ozlabs.org/api/1.2/projects/8/?format=api", "name": "Linux ext4 filesystem development", "link_name": "linux-ext4", "list_id": "linux-ext4.vger.kernel.org", "list_email": "linux-ext4@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260410120319.853669871@kernel.org>", "list_archive_url": null, "date": "2026-04-10T12:21:14", "name": "[34/38] riscv: Select ARCH_HAS_RANDOM_ENTROPY", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "803b6db118cf7e2d2667604e2f7270ce26860ce8", "submitter": { "id": 92397, "url": "http://patchwork.ozlabs.org/api/1.2/people/92397/?format=api", "name": "Thomas Gleixner", "email": "tglx@kernel.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-ext4/patch/20260410120319.853669871@kernel.org/mbox/", "series": [ { "id": 499451, "url": "http://patchwork.ozlabs.org/api/1.2/series/499451/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/list/?series=499451", "date": "2026-04-10T12:18:27", "name": "treewide: Cleanup LATCH, CLOCK_TICK_RATE and get_cycles() [ab]use", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/499451/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2221899/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2221899/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <SRS0=z0h1=CJ=vger.kernel.org=linux-ext4+bounces-15769-patchwork-incoming=ozlabs.org@ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-ext4@vger.kernel.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "patchwork-incoming@ozlabs.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=OA4RjUak;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org\n (client-ip=2404:9400:2221:ea00::3; helo=mail.ozlabs.org;\n envelope-from=srs0=z0h1=cj=vger.kernel.org=linux-ext4+bounces-15769-patchwork-incoming=ozlabs.org@ozlabs.org;\n receiver=patchwork.ozlabs.org)", "gandalf.ozlabs.org;\n arc=pass smtp.remote-ip=\"2600:3c0a:e001:db::12fc:5321\"\n arc.chain=subspace.kernel.org", "gandalf.ozlabs.org;\n dmarc=pass (p=quarantine dis=none) header.from=kernel.org", "gandalf.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=OA4RjUak;\n\tdkim-atps=neutral", "gandalf.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c0a:e001:db::12fc:5321; helo=sea.lore.kernel.org;\n envelope-from=linux-ext4+bounces-15769-patchwork-incoming=ozlabs.org@vger.kernel.org;\n receiver=ozlabs.org)", "smtp.subspace.kernel.org;\n\tdkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=\"OA4RjUak\"", "smtp.subspace.kernel.org;\n arc=none smtp.client-ip=10.30.226.201" ], "Received": [ "from mail.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fsc2x69Zbz1yGS\n\tfor <incoming@patchwork.ozlabs.org>; Fri, 10 Apr 2026 22:45:13 +1000 (AEST)", "from mail.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3])\n\tby gandalf.ozlabs.org (Postfix) with ESMTP id 4fsc2x5l5kz4wLW\n\tfor <incoming@patchwork.ozlabs.org>; Fri, 10 Apr 2026 22:45:13 +1000 (AEST)", "by gandalf.ozlabs.org (Postfix)\n\tid 4fsc2x5drCz4wK5; Fri, 10 Apr 2026 22:45:13 +1000 (AEST)", "from sea.lore.kernel.org (sea.lore.kernel.org\n [IPv6:2600:3c0a:e001:db::12fc:5321])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby gandalf.ozlabs.org (Postfix) with ESMTPS id 4fsc2t1tR8z4wLW\n\tfor <patchwork-incoming@ozlabs.org>; Fri, 10 Apr 2026 22:45:10 +1000 (AEST)", "from smtp.subspace.kernel.org (conduit.subspace.kernel.org\n [100.90.174.1])\n\tby sea.lore.kernel.org (Postfix) with ESMTP id 653B430BD17F\n\tfor <patchwork-incoming@ozlabs.org>; Fri, 10 Apr 2026 12:29:36 +0000 (UTC)", "from localhost.localdomain (localhost.localdomain [127.0.0.1])\n\tby smtp.subspace.kernel.org (Postfix) with ESMTP id D015F3E3175;\n\tFri, 10 Apr 2026 12:21:17 +0000 (UTC)", "from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org\n [10.30.226.201])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby smtp.subspace.kernel.org (Postfix) with ESMTPS id 7DF443C1417;\n\tFri, 10 Apr 2026 12:21:17 +0000 (UTC)", "by smtp.kernel.org (Postfix) with ESMTPSA id 57879C2BCB3;\n\tFri, 10 Apr 2026 12:21:16 +0000 (UTC)" ], "ARC-Seal": [ "i=2; a=rsa-sha256; d=ozlabs.org; s=201707; t=1775825113; cv=pass;\n\tb=gN5S8tUgqH8WlobYH2S0jn97B45XTHGqbhLWI1og5+Yhk0mhrpfy3yRqbxwbEOeUV44Y2IEYKLHud26YKb/VIOWQsz/Hs0BFher3nveQyWV51s3H7JcWQE7rqfPc29Blf5RFP4lg/x52exibBQLMClySQPX3CEsrfkCwE5nSseKbFtJ8Fg2c0n/N27kmBHqf1coQdACkFBEYBA6bWUtI4xsrd/83dDWfNF4OvOBqx1GEukMB+hrdS2b24wE7LFx0wOk/8EmvnMKRbv9fdFZH1N9VNMfctTG6SyBg4tTJKkODzHZOKeHinVVz7/zhFbDLT7NrwZpEGszd2IjMVMGHXA==", "i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1775823677; cv=none;\n b=d2khFmSsUoxRQFxpKNZ7iS4uYm/w6pawChSZxKv8m+ytaK/E1NDFNURDM9tjF0r+DI2eKRe9rITBvCDw0e7rgqV3vSwZf2J/vmLdmnJYdmAzUD8K9FluKnZT02SQFA4kmN13dJppxIe2YSnIdGptNhj6vxafKlSH4d2tDIX9CWc=" ], "ARC-Message-Signature": [ "i=2; a=rsa-sha256; d=ozlabs.org; s=201707;\n\tt=1775825113; c=relaxed/relaxed;\n\tbh=U8y46tGevNTaaJuQgRNS3grY9omWgCX/AAW8OBbapGE=;\n\th=Date:Message-ID:From:To:Cc:Subject:References:MIME-Version:\n\t Content-Type;\n b=tyJFQOvOArAGFrtneT+g+58oU7io8nkqarj2NdQP5ES9stQOftl8iehRceSydwQUcpK6c70yph6pgjpr1CnkaWuN6WzOuf4n/QLa8pIc4AgppUmxaHEGl91Dtf8n9NpEUgnG40FyYd+2JhWY+URYIMiKNGjWeSG3iZ71PFwJZx0sqRydy3Us7HW2laKfPvm5t16ecK7xko//vAVSA+TJRRI1y5YGJLSY3NIPkfaES7i2hU26Od1NxHlzlpz1jpdtr1Ldr2ozgRDZQEUU4AaBxeRu2WEE+lJ0BYd47X6f4suPktH6AcnygLRRytn0kZ68Dcr3T4uEBI5ZPeXqTClVEg==", "i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1775823677; c=relaxed/simple;\n\tbh=8aVhqN+bsjtC+8iOVhItTcCo4nE5t4ex+cjOCvHOROg=;\n\th=Date:Message-ID:From:To:Cc:Subject:References:MIME-Version:\n\t Content-Type;\n b=JwIb8lSbP7mj0wUuSp9lsSb4Sz70HTK+YpxSMJm0qtYdVd4oe3AgzviO+Ig7/L8oJqUNdeyAWs6ZA1KdeX/Ks31JCM794QTLN+J0FKJDcasdVfU4bYuLTvQX1eQYWfjSCiIU5eGk3G6wv9pVrf8KqwprFVfEb3qpEVujTxldPs8=" ], "ARC-Authentication-Results": [ "i=2; gandalf.ozlabs.org;\n dmarc=pass (p=quarantine dis=none) header.from=kernel.org;\n dkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=OA4RjUak; dkim-atps=neutral;\n spf=pass (client-ip=2600:3c0a:e001:db::12fc:5321; helo=sea.lore.kernel.org;\n envelope-from=linux-ext4+bounces-15769-patchwork-incoming=ozlabs.org@vger.kernel.org;\n receiver=ozlabs.org) smtp.mailfrom=vger.kernel.org", "i=1; smtp.subspace.kernel.org;\n dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=OA4RjUak; arc=none smtp.client-ip=10.30.226.201" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1775823677;\n\tbh=8aVhqN+bsjtC+8iOVhItTcCo4nE5t4ex+cjOCvHOROg=;\n\th=Date:From:To:Cc:Subject:References:From;\n\tb=OA4RjUakSKbHP7uZl9Rn6aI/7Qts08y1gdCxG4212yNJdVKaYLulTRlHhQ1giBOu6\n\t tARhrIBIltPo7n2ZqupgbCjM222ynMbD+JMBXCcsIED9ns8vEth54JFbieyU26o9rm\n\t KoQTgfYyoH0jSRf5j3OQodGQDBBjhAykp4Hy5bQdfGP0P88P76fnb883frBXWWU03q\n\t P/YOEYqjXf/L4ccO74xjFbM3qOQBRFdrvTUVXM6TfNVPJX1ACluXAp6rS0x+D02XQB\n\t ZfqSCQC8dN3KdQ34VmPvfFKRcfafCQ6soBJ+KtAS56vLrMJXpWDVh/K6XVrYMUGmaP\n\t YaxQP6ppalRew==", "Date": "Fri, 10 Apr 2026 14:21:14 +0200", "Message-ID": "<20260410120319.853669871@kernel.org>", "User-Agent": "quilt/0.68", "From": "Thomas Gleixner <tglx@kernel.org>", "To": "LKML <linux-kernel@vger.kernel.org>", "Cc": "Paul Walmsley <pjw@kernel.org>,\n linux-riscv@lists.infradead.org,\n Arnd Bergmann <arnd@arndb.de>,\n x86@kernel.org,\n Lu Baolu <baolu.lu@linux.intel.com>,\n iommu@lists.linux.dev,\n Michael Grzeschik <m.grzeschik@pengutronix.de>,\n netdev@vger.kernel.org,\n linux-wireless@vger.kernel.org,\n Herbert Xu <herbert@gondor.apana.org.au>,\n linux-crypto@vger.kernel.org,\n Vlastimil Babka <vbabka@kernel.org>,\n linux-mm@kvack.org,\n David Woodhouse <dwmw2@infradead.org>,\n Bernie Thompson <bernie@plugable.com>,\n linux-fbdev@vger.kernel.org,\n \"Theodore Tso\" <tytso@mit.edu>,\n linux-ext4@vger.kernel.org,\n Andrew Morton <akpm@linux-foundation.org>,\n Uladzislau Rezki <urezki@gmail.com>,\n Marco Elver <elver@google.com>,\n Dmitry Vyukov <dvyukov@google.com>,\n kasan-dev@googlegroups.com,\n Andrey Ryabinin <ryabinin.a.a@gmail.com>,\n Thomas Sailer <t.sailer@alumni.ethz.ch>,\n linux-hams@vger.kernel.org,\n \"Jason A. Donenfeld\" <Jason@zx2c4.com>,\n Richard Henderson <richard.henderson@linaro.org>,\n linux-alpha@vger.kernel.org,\n Russell King <linux@armlinux.org.uk>,\n linux-arm-kernel@lists.infradead.org,\n Catalin Marinas <catalin.marinas@arm.com>,\n Huacai Chen <chenhuacai@kernel.org>,\n loongarch@lists.linux.dev,\n Geert Uytterhoeven <geert@linux-m68k.org>,\n linux-m68k@lists.linux-m68k.org,\n Dinh Nguyen <dinguyen@kernel.org>,\n Jonas Bonn <jonas@southpole.se>,\n linux-openrisc@vger.kernel.org,\n Helge Deller <deller@gmx.de>,\n linux-parisc@vger.kernel.org,\n Michael Ellerman <mpe@ellerman.id.au>,\n linuxppc-dev@lists.ozlabs.org,\n Heiko Carstens <hca@linux.ibm.com>,\n linux-s390@vger.kernel.org,\n \"David S. Miller\" <davem@davemloft.net>,\n sparclinux@vger.kernel.org", "Subject": "[patch 34/38] riscv: Select ARCH_HAS_RANDOM_ENTROPY", "References": "<20260410120044.031381086@kernel.org>", "Precedence": "bulk", "X-Mailing-List": "linux-ext4@vger.kernel.org", "List-Id": "<linux-ext4.vger.kernel.org>", "List-Subscribe": "<mailto:linux-ext4+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-ext4+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=UTF-8", "X-Spam-Status": "No, score=-1.2 required=5.0 tests=ARC_SIGNED,ARC_VALID,\n\tDKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DMARC_PASS,\n\tMAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=disabled\n\tversion=4.0.1", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on gandalf.ozlabs.org" }, "content": "The only remaining non-architecture usage of get_cycles() is to provide\nrandom_get_entropy().\n\nSwitch riscv over to the new scheme of selecting ARCH_HAS_RANDOM_ENTROPY\nand providing random_get_entropy() in asm/random.h.\n\nAdd 'asm/timex.h' includes to the relevant files, so the global include can\nbe removed once all architectures are converted over.\n\nSigned-off-by: Thomas Gleixner <tglx@kernel.org>\nCc: Paul Walmsley <pjw@kernel.org>\nCc: linux-riscv@lists.infradead.org\n---\n arch/riscv/Kconfig | 1 +\n arch/riscv/include/asm/random.h | 25 +++++++++++++++++++++++++\n arch/riscv/include/asm/timex.h | 13 -------------\n arch/riscv/kernel/unaligned_access_speed.c | 1 +\n arch/riscv/kvm/vcpu_timer.c | 1 +\n arch/riscv/lib/delay.c | 1 +\n 6 files changed, 29 insertions(+), 13 deletions(-)", "diff": "--- a/arch/riscv/Kconfig\n+++ b/arch/riscv/Kconfig\n@@ -47,6 +47,7 @@ config RISCV\n \tselect ARCH_HAS_PREPARE_SYNC_CORE_CMD\n \tselect ARCH_HAS_PTDUMP if MMU\n \tselect ARCH_HAS_PTE_SPECIAL\n+\tselect ARCH_HAS_RANDOM_ENTROPY\n \tselect ARCH_HAS_SET_DIRECT_MAP if MMU\n \tselect ARCH_HAS_SET_MEMORY if MMU\n \tselect ARCH_HAS_STRICT_KERNEL_RWX if MMU && !XIP_KERNEL\n--- /dev/null\n+++ b/arch/riscv/include/asm/random.h\n@@ -0,0 +1,25 @@\n+/* SPDX-License-Identifier: GPL-2.0-only */\n+#ifndef _ASM_RISCV_RANDOM_H\n+#define _ASM_RISCV_RANDOM_H\n+\n+#include <asm/timex.h>\n+\n+#ifdef CONFIG_RISCV_M_MODE\n+/*\n+ * Much like MIPS, we may not have a viable counter to use at an early point\n+ * in the boot process. Unfortunately we don't have a fallback, so instead\n+ * invoke the fallback function.\n+ */\n+static inline unsigned long random_get_entropy(void)\n+{\n+\tif (unlikely(clint_time_val == NULL))\n+\t\treturn random_get_entropy_fallback();\n+\treturn get_cycles();\n+}\n+#else /* !CONFIG_RISCV_M_MODE */\n+static inline unsigned long random_get_entropy(void)\n+{\n+\treturn get_cycles();\n+}\n+#endif /* CONFIG_RISCV_M_MODE */\n+#endif /* _ASM_RISCV_RANDOM_H */\n--- a/arch/riscv/include/asm/timex.h\n+++ b/arch/riscv/include/asm/timex.h\n@@ -31,19 +31,6 @@ static inline u32 get_cycles_hi(void)\n #define get_cycles_hi get_cycles_hi\n #endif /* CONFIG_64BIT */\n \n-/*\n- * Much like MIPS, we may not have a viable counter to use at an early point\n- * in the boot process. Unfortunately we don't have a fallback, so instead\n- * we just return 0.\n- */\n-static inline unsigned long random_get_entropy(void)\n-{\n-\tif (unlikely(clint_time_val == NULL))\n-\t\treturn random_get_entropy_fallback();\n-\treturn get_cycles();\n-}\n-#define random_get_entropy()\trandom_get_entropy()\n-\n #else /* CONFIG_RISCV_M_MODE */\n \n static inline cycles_t get_cycles(void)\n--- a/arch/riscv/kernel/unaligned_access_speed.c\n+++ b/arch/riscv/kernel/unaligned_access_speed.c\n@@ -12,6 +12,7 @@\n #include <linux/types.h>\n #include <asm/cpufeature.h>\n #include <asm/hwprobe.h>\n+#include <asm/timex.h>\n #include <asm/vector.h>\n \n #include \"copy-unaligned.h\"\n--- a/arch/riscv/kvm/vcpu_timer.c\n+++ b/arch/riscv/kvm/vcpu_timer.c\n@@ -14,6 +14,7 @@\n #include <asm/delay.h>\n #include <asm/kvm_nacl.h>\n #include <asm/kvm_vcpu_timer.h>\n+#include <asm/timex.h>\n \n static u64 kvm_riscv_current_cycles(struct kvm_guest_timer *gt)\n {\n--- a/arch/riscv/lib/delay.c\n+++ b/arch/riscv/lib/delay.c\n@@ -10,6 +10,7 @@\n #include <linux/export.h>\n \n #include <asm/processor.h>\n+#include <asm/timex.h>\n \n /*\n * This is copies from arch/arm/include/asm/delay.h\n", "prefixes": [ "34/38" ] }