From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EBA1B7261C; Wed, 15 Apr 2026 06:48:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776235688; cv=none; b=VC0HeiIeyPbFiMPlht12nkmj1sOzpLciXiWZzrfVe3CdzIDzMfGMaDd4M9L7dXoPu3Xn17ZUfQcJCs35e/vkLuPElTADpam7hW9ZdfalSZYuAhmiQqdJ7c/HhXIdK+9QX8sAGO4oLasX4Xd8bYeefuH1BEsNhE7tRPAWAVjp08w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776235688; c=relaxed/simple; bh=uO1fFgRaYkEaX03uIGSllbIp0KmN4e8uhrxbiL7j6JA=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=b0DifANz9TAza/g0YGWlyJzT5cmj1b9jAXrEuvQudqCfl5mh8pMN2VV1x2+/jiRPgx0WazlQLhgh7ibkcQI/dZwKq6QLErIeBGUQOPa+o9gTiX1e30B7xxARW4oG5XxFubH77edrD36djPekrUkEd9FvBvlIzw0rcZJWWysSLkk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Wn6Hr/rv; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Wn6Hr/rv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0E1D1C19424; Wed, 15 Apr 2026 06:47:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776235687; bh=uO1fFgRaYkEaX03uIGSllbIp0KmN4e8uhrxbiL7j6JA=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=Wn6Hr/rv7RQ0mjmBpBGnHzSLGoawtRWrJKf8Yulby+TTpp7z1W2m+/e3q+cBeZYn8 9EULstKmB1P1aIGBA/hM7NfdL90zPADnWSMrSZUOJgfBI2Y0gYKo15ZH/8SN+3BCpi LFdpD3kIOkfmc5kLWHOPn/7qJv2G9rdoWFZcqmWwEJGa7DK0r7DBeorJlYNCKX5hcM Q22Qw/tg/rR1esDPVyaYxqkxnFQnTVF5/bVWUROMriQiIMAWyo9xVZRAIqfM9NCvMV JvPvhMbjPkTiWVz5ZUzK2DMWWd8bbim3aFcilo4uxvNCEcTYhNnaiu0tF2t4jRv/Q5 DezCa9n7clYBA== Message-ID: <9c33afea-7a64-456e-aa2f-bdcf7459b567@kernel.org> Date: Wed, 15 Apr 2026 08:47:55 +0200 Precedence: bulk X-Mailing-List: linux-alpha@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [patch 33/38] powerpc: Select ARCH_HAS_RANDOM_ENTROPY To: Thomas Gleixner , LKML Cc: Michael Ellerman , linuxppc-dev@lists.ozlabs.org, Arnd Bergmann , x86@kernel.org, Lu Baolu , iommu@lists.linux.dev, Michael Grzeschik , netdev@vger.kernel.org, linux-wireless@vger.kernel.org, Herbert Xu , linux-crypto@vger.kernel.org, Vlastimil Babka , linux-mm@kvack.org, David Woodhouse , Bernie Thompson , linux-fbdev@vger.kernel.org, Theodore Tso , linux-ext4@vger.kernel.org, Andrew Morton , Uladzislau Rezki , Marco Elver , Dmitry Vyukov , kasan-dev@googlegroups.com, Andrey Ryabinin , Thomas Sailer , linux-hams@vger.kernel.org, "Jason A. Donenfeld" , Richard Henderson , linux-alpha@vger.kernel.org, Russell King , linux-arm-kernel@lists.infradead.org, Catalin Marinas , Huacai Chen , loongarch@lists.linux.dev, Geert Uytterhoeven , linux-m68k@lists.linux-m68k.org, Dinh Nguyen , Jonas Bonn , linux-openrisc@vger.kernel.org, Helge Deller , linux-parisc@vger.kernel.org, Paul Walmsley , linux-riscv@lists.infradead.org, Heiko Carstens , linux-s390@vger.kernel.org, "David S. Miller" , sparclinux@vger.kernel.org References: <20260410120044.031381086@kernel.org> <20260410120319.789114053@kernel.org> Content-Language: fr-FR From: "Christophe Leroy (CS GROUP)" In-Reply-To: <20260410120319.789114053@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Le 10/04/2026 à 14:21, Thomas Gleixner a écrit : > The only remaining usage of get_cycles() is to provide random_get_entropy(). > > Switch powerpc over to the new scheme of selecting ARCH_HAS_RANDOM_ENTROPY > and providing random_get_entropy() in asm/random.h. > > Remove asm/timex.h as it has no functionality anymore. > > Signed-off-by: Thomas Gleixner > Cc: Michael Ellerman > Cc: linuxppc-dev@lists.ozlabs.org Reviewed-by: Christophe Leroy (CS GROUP) > --- > arch/powerpc/Kconfig | 1 + > arch/powerpc/include/asm/random.h | 13 +++++++++++++ > arch/powerpc/include/asm/timex.h | 21 --------------------- > 3 files changed, 14 insertions(+), 21 deletions(-) > > --- a/arch/powerpc/Kconfig > +++ b/arch/powerpc/Kconfig > @@ -150,6 +150,7 @@ config PPC > select ARCH_HAS_PREEMPT_LAZY > select ARCH_HAS_PTDUMP > select ARCH_HAS_PTE_SPECIAL > + select ARCH_HAS_RANDOM_ENTROPY > select ARCH_HAS_SCALED_CPUTIME if VIRT_CPU_ACCOUNTING_NATIVE && PPC_BOOK3S_64 > select ARCH_HAS_SET_MEMORY > select ARCH_HAS_STRICT_KERNEL_RWX if (PPC_BOOK3S || PPC_8xx) && !HIBERNATION > --- /dev/null > +++ b/arch/powerpc/include/asm/random.h > @@ -0,0 +1,13 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +#ifndef _ASM_POWERPC_RANDOM_H > +#define _ASM_POWERPC_RANDOM_H > + > +#include > +#include > + > +static inline unsigned long random_get_entropy(void) > +{ > + return mftb(); > +} > + > +#endif /* _ASM_POWERPC_RANDOM_H */ > --- a/arch/powerpc/include/asm/timex.h > +++ b/arch/powerpc/include/asm/timex.h > @@ -1,21 +0,0 @@ > -/* SPDX-License-Identifier: GPL-2.0 */ > -#ifndef _ASM_POWERPC_TIMEX_H > -#define _ASM_POWERPC_TIMEX_H > - > -#ifdef __KERNEL__ > - > -/* > - * PowerPC architecture timex specifications > - */ > - > -#include > -#include > - > -ostatic inline cycles_t get_cycles(void) > -{ > - return mftb(); > -} > -#define get_cycles get_cycles > - > -#endif /* __KERNEL__ */ > -#endif /* _ASM_POWERPC_TIMEX_H */ > > From mboxrd@z Thu Jan 1 00:00:00 1970 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 743FDFA0C35 for ; Wed, 15 Apr 2026 06:48:19 +0000 (UTC) DKIM-Signature: v=1; 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Donenfeld" , Richard Henderson , linux-alpha@vger.kernel.org, Russell King , linux-arm-kernel@lists.infradead.org, Catalin Marinas , Huacai Chen , loongarch@lists.linux.dev, Geert Uytterhoeven , linux-m68k@lists.linux-m68k.org, Dinh Nguyen , Jonas Bonn , linux-openrisc@vger.kernel.org, Helge Deller , linux-parisc@vger.kernel.org, Paul Walmsley , linux-riscv@lists.infradead.org, Heiko Carstens , linux-s390@vger.kernel.org, "David S. Miller" , sparclinux@vger.kernel.org References: <20260410120044.031381086@kernel.org> <20260410120319.789114053@kernel.org> Content-Language: fr-FR From: "Christophe Leroy (CS GROUP)" In-Reply-To: <20260410120319.789114053@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260414_234808_866234_17AEAA5A X-CRM114-Status: GOOD ( 14.85 ) 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: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org CgpMZSAxMC8wNC8yMDI2IMOgIDE0OjIxLCBUaG9tYXMgR2xlaXhuZXIgYSDDqWNyaXTCoDoKPiBU aGUgb25seSByZW1haW5pbmcgdXNhZ2Ugb2YgZ2V0X2N5Y2xlcygpIGlzIHRvIHByb3ZpZGUgcmFu ZG9tX2dldF9lbnRyb3B5KCkuCj4gCj4gU3dpdGNoIHBvd2VycGMgb3ZlciB0byB0aGUgbmV3IHNj aGVtZSBvZiBzZWxlY3RpbmcgQVJDSF9IQVNfUkFORE9NX0VOVFJPUFkKPiBhbmQgcHJvdmlkaW5n IHJhbmRvbV9nZXRfZW50cm9weSgpIGluIGFzbS9yYW5kb20uaC4KPiAKPiBSZW1vdmUgYXNtL3Rp bWV4LmggYXMgaXQgaGFzIG5vIGZ1bmN0aW9uYWxpdHkgYW55bW9yZS4KPiAKPiBTaWduZWQtb2Zm LWJ5OiBUaG9tYXMgR2xlaXhuZXIgPHRnbHhAa2VybmVsLm9yZz4KPiBDYzogTWljaGFlbCBFbGxl cm1hbiA8bXBlQGVsbGVybWFuLmlkLmF1Pgo+IENjOiBsaW51eHBwYy1kZXZAbGlzdHMub3psYWJz Lm9yZwoKUmV2aWV3ZWQtYnk6IENocmlzdG9waGUgTGVyb3kgKENTIEdST1VQKSA8Y2hsZXJveUBr ZXJuZWwub3JnPgoKPiAtLS0KPiAgIGFyY2gvcG93ZXJwYy9LY29uZmlnICAgICAgICAgICAgICB8 ICAgIDEgKwo+ICAgYXJjaC9wb3dlcnBjL2luY2x1ZGUvYXNtL3JhbmRvbS5oIHwgICAxMyArKysr KysrKysrKysrCj4gICBhcmNoL3Bvd2VycGMvaW5jbHVkZS9hc20vdGltZXguaCAgfCAgIDIxIC0t LS0tLS0tLS0tLS0tLS0tLS0tLQo+ICAgMyBmaWxlcyBjaGFuZ2VkLCAxNCBpbnNlcnRpb25zKCsp LCAyMSBkZWxldGlvbnMoLSkKPiAKPiAtLS0gYS9hcmNoL3Bvd2VycGMvS2NvbmZpZwo+ICsrKyBi L2FyY2gvcG93ZXJwYy9LY29uZmlnCj4gQEAgLTE1MCw2ICsxNTAsNyBAQCBjb25maWcgUFBDCj4g ICAJc2VsZWN0IEFSQ0hfSEFTX1BSRUVNUFRfTEFaWQo+ICAgCXNlbGVjdCBBUkNIX0hBU19QVERV TVAKPiAgIAlzZWxlY3QgQVJDSF9IQVNfUFRFX1NQRUNJQUwKPiArCXNlbGVjdCBBUkNIX0hBU19S QU5ET01fRU5UUk9QWQo+ICAgCXNlbGVjdCBBUkNIX0hBU19TQ0FMRURfQ1BVVElNRQkJaWYgVklS VF9DUFVfQUNDT1VOVElOR19OQVRJVkUgJiYgUFBDX0JPT0szU182NAo+ICAgCXNlbGVjdCBBUkNI X0hBU19TRVRfTUVNT1JZCj4gICAJc2VsZWN0IEFSQ0hfSEFTX1NUUklDVF9LRVJORUxfUldYCWlm IChQUENfQk9PSzNTIHx8IFBQQ184eHgpICYmICFISUJFUk5BVElPTgo+IC0tLSAvZGV2L251bGwK PiArKysgYi9hcmNoL3Bvd2VycGMvaW5jbHVkZS9hc20vcmFuZG9tLmgKPiBAQCAtMCwwICsxLDEz IEBACj4gKy8qIFNQRFgtTGljZW5zZS1JZGVudGlmaWVyOiBHUEwtMi4wICovCj4gKyNpZm5kZWYg X0FTTV9QT1dFUlBDX1JBTkRPTV9ICj4gKyNkZWZpbmUgX0FTTV9QT1dFUlBDX1JBTkRPTV9ICj4g Kwo+ICsjaW5jbHVkZSA8YXNtL2NwdXRhYmxlLmg+Cj4gKyNpbmNsdWRlIDxhc20vdmRzby90aW1l YmFzZS5oPgo+ICsKPiArc3RhdGljIGlubGluZSB1bnNpZ25lZCBsb25nIHJhbmRvbV9nZXRfZW50 cm9weSh2b2lkKQo+ICt7Cj4gKwlyZXR1cm4gbWZ0YigpOwo+ICt9Cj4gKwo+ICsjZW5kaWYJLyog X0FTTV9QT1dFUlBDX1JBTkRPTV9IICovCj4gLS0tIGEvYXJjaC9wb3dlcnBjL2luY2x1ZGUvYXNt L3RpbWV4LmgKPiArKysgYi9hcmNoL3Bvd2VycGMvaW5jbHVkZS9hc20vdGltZXguaAo+IEBAIC0x LDIxICswLDAgQEAKPiAtLyogU1BEWC1MaWNlbnNlLUlkZW50aWZpZXI6IEdQTC0yLjAgKi8KPiAt I2lmbmRlZiBfQVNNX1BPV0VSUENfVElNRVhfSAo+IC0jZGVmaW5lIF9BU01fUE9XRVJQQ19USU1F WF9ICj4gLQo+IC0jaWZkZWYgX19LRVJORUxfXwo+IC0KPiAtLyoKPiAtICogUG93ZXJQQyBhcmNo aXRlY3R1cmUgdGltZXggc3BlY2lmaWNhdGlvbnMKPiAtICovCj4gLQo+IC0jaW5jbHVkZSA8YXNt L2NwdXRhYmxlLmg+Cj4gLSNpbmNsdWRlIDxhc20vdmRzby90aW1lYmFzZS5oPgo+IC0KPiAtb3N0 YXRpYyBpbmxpbmUgY3ljbGVzX3QgZ2V0X2N5Y2xlcyh2b2lkKQo+IC17Cj4gLQlyZXR1cm4gbWZ0 YigpOwo+IC19Cj4gLSNkZWZpbmUgZ2V0X2N5Y2xlcyBnZXRfY3ljbGVzCj4gLQo+IC0jZW5kaWYJ LyogX19LRVJORUxfXyAqLwo+IC0jZW5kaWYJLyogX0FTTV9QT1dFUlBDX1RJTUVYX0ggKi8KPiAK PiAKCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51 eC1yaXNjdiBtYWlsaW5nIGxpc3QKbGludXgtcmlzY3ZAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRw Oi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LXJpc2N2Cg==