{"id":2221834,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2221834/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260410120319.789114053@kernel.org/","project":{"id":2,"url":"http://patchwork.ozlabs.org/api/1.1/projects/2/?format=json","name":"Linux PPC development","link_name":"linuxppc-dev","list_id":"linuxppc-dev.lists.ozlabs.org","list_email":"linuxppc-dev@lists.ozlabs.org","web_url":"https://github.com/linuxppc/wiki/wiki","scm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git","webscm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/"},"msgid":"<20260410120319.789114053@kernel.org>","date":"2026-04-10T12:21:09","name":"[33/38] powerpc: Select ARCH_HAS_RANDOM_ENTROPY","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"7dd5085d8e3ae1dd48513d69e7f2673bacdd35ff","submitter":{"id":92397,"url":"http://patchwork.ozlabs.org/api/1.1/people/92397/?format=json","name":"Thomas Gleixner","email":"tglx@kernel.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260410120319.789114053@kernel.org/mbox/","series":[{"id":499449,"url":"http://patchwork.ozlabs.org/api/1.1/series/499449/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=499449","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/499449/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2221834/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2221834/checks/","tags":{},"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linuxppc-dev@lists.ozlabs.org"],"Delivered-To":"patchwork-incoming@legolas.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=t+6BdojJ;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=112.213.38.117; helo=lists.ozlabs.org;\n envelope-from=linuxppc-dev+bounces-19603-incoming=patchwork.ozlabs.org@lists.ozlabs.org;\n receiver=patchwork.ozlabs.org)","lists.ozlabs.org;\n arc=none smtp.remote-ip=172.234.252.31","lists.ozlabs.org;\n dmarc=pass (p=quarantine dis=none) header.from=kernel.org","lists.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=t+6BdojJ;\n\tdkim-atps=neutral","lists.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org\n (client-ip=172.234.252.31; helo=sea.source.kernel.org;\n envelope-from=tglx@kernel.org; receiver=lists.ozlabs.org)"],"Received":["from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117])\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 4fsbXq6H7tz1y2d\n\tfor ; Fri, 10 Apr 2026 22:22:35 +1000 (AEST)","from boromir.ozlabs.org (localhost [127.0.0.1])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 4fsbWG6jL0z2ytT;\n\tFri, 10 Apr 2026 22:21:14 +1000 (AEST)","from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31])\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 lists.ozlabs.org (Postfix) with ESMTPS id 4fsbWG0dlKz2yhP\n\tfor ; Fri, 10 Apr 2026 22:21:14 +1000 (AEST)","from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58])\n\tby sea.source.kernel.org (Postfix) with ESMTP id 6E75043A9E;\n\tFri, 10 Apr 2026 12:21:12 +0000 (UTC)","by smtp.kernel.org (Postfix) with ESMTPSA id 8E4B2C2BC87;\n\tFri, 10 Apr 2026 12:21:11 +0000 (UTC)"],"ARC-Seal":"i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1775823674;\n\tcv=none;\n b=PafERFDGqAJYe5GO5rDEVcqdopy6KIOg1kdUjY9d2iAoFJ3yjCScRs3FArjsaBAwolAUG/4fQ4uCLRVMyhYd18zSNWEYwWGToZIlUyKWOh6Wnf1qeSCC2P193QvX8Pt2gDNFgdHFsCz6XNOPe2RsVuQBickW5QWis6391UhZ5F3mYgWLtB4sD64IfPgOVLQ3VZicjOTEPn3g2hgyNsA8JBXlnKVrCotJHd+RI+i8R6S1q9hpg+ULqUxH4Ib+xtTvMxA9Xm2yiofKhBIwP9S12P0tysMrUjYHAzdVpRQSyjCm5wBh+O6qDkQKyWs0WgRzlV9OB2u89KzOTOgxZEropg==","ARC-Message-Signature":"i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707;\n\tt=1775823674; c=relaxed/relaxed;\n\tbh=2HK2S+YO7fB4ujSzajjkO7eLLa83jA73mkIKAqkhMZw=;\n\th=Date:Message-ID:From:To:Cc:Subject:References:MIME-Version:\n\t Content-Type;\n b=Zo8yOnsXTV4QuPEWhYB1ht1c23CrOf/t68vx0MT9WM+kdfbRC6hjRcG4DcKxxc2KsTK+2XYWmVRJz8+E8d8a+jFt9O2PjzBWbE+kjQKGs310zhlu8orohijZopXZXel26fOSEaKqYJKpn722K6TPx5G335Sk1D7lhH0gsHLQCWgI+E6tZ0hG6Lg4yJt0KK72nVTSi2YQMrRDx0uWWPb3iI/12BnJsmyDk/Y/oSBDqvEbmcl7MOqKYp3t6CNtbYOEkI6D9x+Lbv1FFGJOKUGTw6jUH2GvIDeYY04iu+Bu1acdbVjmbQUM0iA4kNEREjrmOynZtgRMVUObAnhr6LP85g==","ARC-Authentication-Results":"i=1; lists.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=t+6BdojJ; dkim-atps=neutral;\n spf=pass (client-ip=172.234.252.31; helo=sea.source.kernel.org;\n envelope-from=tglx@kernel.org;\n receiver=lists.ozlabs.org) smtp.mailfrom=kernel.org","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1775823672;\n\tbh=tpcbJjrROej8+Ep0S4yh9w/0viNOJRSIBsQtj9nrduE=;\n\th=Date:From:To:Cc:Subject:References:From;\n\tb=t+6BdojJde/UDdVdrSTxElEId1Y48xNZSVlMYQlGTL0WHNGFs3HWPQxpINyMlW0Tp\n\t I6cN87TfGyJy1fhgMX3eHxGWXyIRGEfK+oj+v7ZqgSkuHT9TIqDSO48kfeefrr2R+6\n\t RZvls6BOQPsjm5E39PGBUAxS3ybrYUwTjTmhDryNFYGgOGgmcHGql9J5M/vSFS9Dpm\n\t Ps3dk0/gjV2/aMyaPlsNujNJN/7qos+7ycvHmAQEpnPn1tOePEJ6rKipC5ku3IQ4UE\n\t ud6vC+9M6N71X0VBW7hJfjso4CmI7VrrHXujC0k5eBTPHkHx5czFPyyVnepx/5Zgc1\n\t GRj7R63OiiEsA==","Date":"Fri, 10 Apr 2026 14:21:09 +0200","Message-ID":"<20260410120319.789114053@kernel.org>","User-Agent":"quilt/0.68","From":"Thomas Gleixner ","To":"LKML ","Cc":"Michael Ellerman ,\n linuxppc-dev@lists.ozlabs.org,\n Arnd Bergmann ,\n x86@kernel.org,\n Lu Baolu ,\n iommu@lists.linux.dev,\n Michael Grzeschik ,\n netdev@vger.kernel.org,\n linux-wireless@vger.kernel.org,\n Herbert Xu ,\n linux-crypto@vger.kernel.org,\n Vlastimil Babka ,\n linux-mm@kvack.org,\n David Woodhouse ,\n Bernie Thompson ,\n linux-fbdev@vger.kernel.org,\n \"Theodore Tso\" ,\n linux-ext4@vger.kernel.org,\n Andrew Morton ,\n Uladzislau Rezki ,\n Marco Elver ,\n Dmitry Vyukov ,\n kasan-dev@googlegroups.com,\n Andrey Ryabinin ,\n Thomas Sailer ,\n linux-hams@vger.kernel.org,\n \"Jason A. Donenfeld\" ,\n Richard Henderson ,\n linux-alpha@vger.kernel.org,\n Russell King ,\n linux-arm-kernel@lists.infradead.org,\n Catalin Marinas ,\n Huacai Chen ,\n loongarch@lists.linux.dev,\n Geert Uytterhoeven ,\n linux-m68k@lists.linux-m68k.org,\n Dinh Nguyen ,\n Jonas Bonn ,\n linux-openrisc@vger.kernel.org,\n Helge Deller ,\n linux-parisc@vger.kernel.org,\n Paul Walmsley ,\n linux-riscv@lists.infradead.org,\n Heiko Carstens ,\n linux-s390@vger.kernel.org,\n \"David S. Miller\" ,\n sparclinux@vger.kernel.org","Subject":"[patch 33/38] powerpc: Select ARCH_HAS_RANDOM_ENTROPY","References":"<20260410120044.031381086@kernel.org>","X-Mailing-List":"linuxppc-dev@lists.ozlabs.org","List-Id":"","List-Help":"","List-Owner":"","List-Post":"","List-Archive":",\n ","List-Subscribe":",\n ,\n ","List-Unsubscribe":"","Precedence":"list","MIME-Version":"1.0","Content-Type":"text/plain; charset=UTF-8","X-Spam-Status":"No, score=-0.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED,\n\tDKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS\n\tautolearn=disabled version=4.0.1 OzLabs 8","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org"},"content":"The only remaining usage of get_cycles() is to provide random_get_entropy().\n\nSwitch powerpc over to the new scheme of selecting ARCH_HAS_RANDOM_ENTROPY\nand providing random_get_entropy() in asm/random.h.\n\nRemove asm/timex.h as it has no functionality anymore.\n\nSigned-off-by: Thomas Gleixner \nCc: Michael Ellerman \nCc: linuxppc-dev@lists.ozlabs.org\n---\n arch/powerpc/Kconfig | 1 +\n arch/powerpc/include/asm/random.h | 13 +++++++++++++\n arch/powerpc/include/asm/timex.h | 21 ---------------------\n 3 files changed, 14 insertions(+), 21 deletions(-)","diff":"--- a/arch/powerpc/Kconfig\n+++ b/arch/powerpc/Kconfig\n@@ -150,6 +150,7 @@ config PPC\n \tselect ARCH_HAS_PREEMPT_LAZY\n \tselect ARCH_HAS_PTDUMP\n \tselect ARCH_HAS_PTE_SPECIAL\n+\tselect ARCH_HAS_RANDOM_ENTROPY\n \tselect ARCH_HAS_SCALED_CPUTIME\t\tif VIRT_CPU_ACCOUNTING_NATIVE && PPC_BOOK3S_64\n \tselect ARCH_HAS_SET_MEMORY\n \tselect ARCH_HAS_STRICT_KERNEL_RWX\tif (PPC_BOOK3S || PPC_8xx) && !HIBERNATION\n--- /dev/null\n+++ b/arch/powerpc/include/asm/random.h\n@@ -0,0 +1,13 @@\n+/* SPDX-License-Identifier: GPL-2.0 */\n+#ifndef _ASM_POWERPC_RANDOM_H\n+#define _ASM_POWERPC_RANDOM_H\n+\n+#include \n+#include \n+\n+static inline unsigned long random_get_entropy(void)\n+{\n+\treturn mftb();\n+}\n+\n+#endif\t/* _ASM_POWERPC_RANDOM_H */\n--- a/arch/powerpc/include/asm/timex.h\n+++ b/arch/powerpc/include/asm/timex.h\n@@ -1,21 +0,0 @@\n-/* SPDX-License-Identifier: GPL-2.0 */\n-#ifndef _ASM_POWERPC_TIMEX_H\n-#define _ASM_POWERPC_TIMEX_H\n-\n-#ifdef __KERNEL__\n-\n-/*\n- * PowerPC architecture timex specifications\n- */\n-\n-#include \n-#include \n-\n-ostatic inline cycles_t get_cycles(void)\n-{\n-\treturn mftb();\n-}\n-#define get_cycles get_cycles\n-\n-#endif\t/* __KERNEL__ */\n-#endif\t/* _ASM_POWERPC_TIMEX_H */\n","prefixes":["33/38"]}