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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E0B6DC79F9E for ; Tue, 8 Sep 2026 14:41:35 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id B51116B008A; Tue, 8 Sep 2026 10:41:34 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id B01ED6B008C; Tue, 8 Sep 2026 10:41:34 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A187B6B0093; Tue, 8 Sep 2026 10:41:34 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 79D916B008A for ; Tue, 8 Sep 2026 10:41:34 -0400 (EDT) Received: from smtpin11.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay03.hostedemail.com (Postfix) with ESMTP id E9CDDA06BE for ; Tue, 8 Sep 2026 14:41:33 +0000 (UTC) X-FDA: 85190858466.11.5AAF3F0 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf15.hostedemail.com (Postfix) with ESMTP id 435BEA0011 for ; Tue, 8 Sep 2026 14:41:32 +0000 (UTC) Authentication-Results: imf15.hostedemail.com; dkim=none; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf15.hostedemail.com: domain of chleroy@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=chleroy@kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1788878492; b=wRA/KJDzbWzyRvZZYnd6u3fK28gXdzHKuqR6Ji55isKqTqLYBg2rEpqse5kKgwMiU1rtKb dyCakcAVa7HAGFwttUVJNd8vfRZoLO8Q2osUn1czZzyIPFX5uAljk04wiNnNjoGqcNbCff GiRF5iac5u3qU2UZKuu3Is/ZP1j7VwY= ARC-Authentication-Results: i=1; imf15.hostedemail.com; dkim=none; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf15.hostedemail.com: domain of chleroy@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=chleroy@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1788878492; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=UDv2ulwj8noxjdMQEqKxpUauXEITpLasbQE7qAV2OQU=; b=8pcQkPQ1yxzIaW3Nh1fts2vEFMq0aiqHzsAAuJ8OsdjimLo2HuNDGany6g8JnoqxN9Gaoj C7LXxO+Ey7riuDZUtlzh9MV2TgBPBHBMhANqFHoZ1Jx+ElmOCoMjV/SrzvZ8ZOK4q19ulm azf78yve+OKeo1TmcJ5+59xfnsYgS08= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 4A81C4360A; Tue, 8 Sep 2026 14:41:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A83611F00A3A; Tue, 8 Sep 2026 14:41:14 +0000 (UTC) Message-ID: <7c9f6ec3-5886-41ea-8803-d81019321d29@kernel.org> Date: Tue, 8 Sep 2026 16:41:09 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 17/24] powerpc/vdso: Enable the vdsocheck tool To: =?UTF-8?Q?Thomas_Wei=C3=9Fschuh?= , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt , Andy Lutomirski , Vincenzo Frascino , Kees Cook , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Richard Weinberger , Anton Ivanov , Johannes Berg , Russell King , Catalin Marinas , Will Deacon , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Huacai Chen , WANG Xuerui , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Thomas Bogendoerfer , Miguel Ojeda , Alex Gaynor , Gary Guo , =?UTF-8?Q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Danilo Krummrich , Thomas Gleixner , Boqun Feng , Nicolas Schier Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, linux-mm@kvack.org, linux-um@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, loongarch@lists.linux.dev, linux-s390@vger.kernel.org, linux-mips@vger.kernel.org, rust-for-linux@vger.kernel.org, linux-kbuild@vger.kernel.org, Jan Stancek , Arnaldo Carvalho de Melo , Alexandre Ghiti References: <20260908-vdso-absolute-reloc-v5-0-3a93791af1cf@linutronix.de> <20260908-vdso-absolute-reloc-v5-17-3a93791af1cf@linutronix.de> Content-Language: fr-FR From: "Christophe Leroy (CS GROUP)" In-Reply-To: <20260908-vdso-absolute-reloc-v5-17-3a93791af1cf@linutronix.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 435BEA0011 X-Stat-Signature: 6iug89ufx97e51k1ra93bh99p4o9tpcn X-HE-Tag: 1788878492-169258 X-HE-Meta: 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 fR+k/t4E RfEt09FbhoeouIx6G5E0iGPxEMb4hDw+QCuO9DiBgMnl1vMGv6PmZ0bzn+aTEojbWBCgDm1Ba4+AjcCEPumW9OCjdPiKBopZkfyNt3DtT1ctpl0MIhTCOWDnEWd8f4K7Nl0K29eDmARL8EhtpIqqG+K2QARNqYeMUxjCAYUatvhH1dqyGg5l9mQg8clz6Ii3VOEFO5P5wEW4gC8iMsm2dL9jg70JuiPG1pjgLzzrKk3lxx52Iyh5SZS5RGa2khbZ/auFhyfkOSAyELB99GRhjntfdPg9JTamiC23/ Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Le 08/09/2026 à 08:33, Thomas Weißschuh a écrit : > The vdsocheck tool validates the object files and final .so library. > It can detect if the compiler created relocations which are incompatible > with the vDSO which need to be worked around. > > Wire it up for the architecture. > > Signed-off-by: Thomas Weißschuh > --- > arch/powerpc/Kconfig | 1 + > arch/powerpc/kernel/vdso/Makefile | 4 ++-- > lib/vdso/check/vdsocheck.rs | 27 +++++++++++++++++++++++++++ > 3 files changed, 30 insertions(+), 2 deletions(-) > > diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig > index 2580e27e4328..f19e225cfc5c 100644 > --- a/arch/powerpc/Kconfig > +++ b/arch/powerpc/Kconfig > @@ -330,6 +330,7 @@ config PPC > select SYSCTL_EXCEPTION_TRACE > select THREAD_INFO_IN_TASK > select TRACE_IRQFLAGS_SUPPORT > + select VDSO_CHECK > select VDSO_DATASTORE > select VDSO_GETRANDOM > # > diff --git a/arch/powerpc/kernel/vdso/Makefile b/arch/powerpc/kernel/vdso/Makefile > index 368759f81708..ca20b91b4373 100644 > --- a/arch/powerpc/kernel/vdso/Makefile > +++ b/arch/powerpc/kernel/vdso/Makefile > @@ -81,9 +81,9 @@ targets += vdso64.lds > CPPFLAGS_vdso64.lds += -P -C > > # link rule for the .so file, .lds has to be first > -$(obj)/vdso32.so.dbg: $(obj)/vdso32.lds $(obj-vdso32) $(obj)/vgettimeofday-32.o $(obj)/vgetrandom-32.o $(obj)/crtsavres-32.o FORCE > +$(obj)/vdso32.so.dbg: $(obj)/vdso32.lds $(obj-vdso32) $(obj)/vgettimeofday-32.o $(obj)/vgetrandom-32.o $(obj)/crtsavres-32.o $(vdsocheck) FORCE > $(call if_changed,vdso32ld_and_check) > -$(obj)/vdso64.so.dbg: $(obj)/vdso64.lds $(obj-vdso64) $(obj)/vgettimeofday-64.o $(obj)/vgetrandom-64.o FORCE > +$(obj)/vdso64.so.dbg: $(obj)/vdso64.lds $(obj-vdso64) $(obj)/vgettimeofday-64.o $(obj)/vgetrandom-64.o $(vdsocheck) FORCE > $(call if_changed,vdso64ld_and_check) > > # assembly rules for the .S files > diff --git a/lib/vdso/check/vdsocheck.rs b/lib/vdso/check/vdsocheck.rs > index e45a1fbc6829..429bdcd65818 100644 > --- a/lib/vdso/check/vdsocheck.rs > +++ b/lib/vdso/check/vdsocheck.rs > @@ -69,6 +69,33 @@ fn allowed_relocations_for_machine(machine: u16) -> Option ..Default::default() > } > .into(), > + bindings::EM_PPC => AllowedRelocations { > + in_object_file: &[ > + bindings::R_PPC_REL24, Not sure this is correct, see commit 42ed6d56ade2 ("powerpc/vdso: Block R_PPC_REL24 relocations") > + bindings::R_PPC_REL14, > + bindings::R_PPC_REL32, > + bindings::R_PPC_REL16, > + bindings::R_PPC_REL16_LO, > + bindings::R_PPC_REL16_HI, > + bindings::R_PPC_REL16_HA, > + ], > + ..Default::default() > + } > + .into(), > + bindings::EM_PPC64 => AllowedRelocations { > + in_object_file: &[ > + bindings::R_PPC64_REL24, Not sure this is correct, see commit 42ed6d56ade2 ("powerpc/vdso: Block R_PPC_REL24 relocations") > + bindings::R_PPC64_REL14, > + bindings::R_PPC64_REL32, > + bindings::R_PPC64_REL64, > + bindings::R_PPC64_REL16, > + bindings::R_PPC64_REL16_LO, > + bindings::R_PPC64_REL16_HI, > + bindings::R_PPC64_REL16_HA, > + ], > + ..Default::default() > + } > + .into(), > _ => None, > } > } > 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 59464C79F9E for ; Tue, 8 Sep 2026 14:41:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To:Subject: MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Jon0KlOSlXyKCTH9NfFnPXNR2x06ZnCYj+vtjwhliuY=; b=BJaE6Dyu+LnjfB NClccfFSqJe7x2PK+Z3uvjgXl41AyD9UhFyQ3Z+sgsO3kJ6Tx6A6kREDzUS0YpabABaS2jsWoQsUB 4NWv0vLEoreOcpr64YyQZaMBD1doA1bO9s3EHUh05t7jsnrrpL5OvkgTPClrbrIUX87Z5PdSx2DYh EbPgXHE/3utX8qSqXC66neJ4oizp7b/UxW9w245Hme8K4D/aQqsXlOHfryWrKL1CXsbV7nT4qYLF3 jpmO0Q41K0Yjx2JjP1lrrpuBqrOplsfArK5qmeLMpyEN73WLgZv3+gddF+hJGJUydMAiKiwPSqQvs MaxxG1SIC6bA9b0BKQTw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x3x0v-00000009Ikf-004t; Tue, 08 Sep 2026 14:41:33 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x3x0u-00000009Ik5-0ITD; Tue, 08 Sep 2026 14:41:32 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 4A81C4360A; Tue, 8 Sep 2026 14:41:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A83611F00A3A; Tue, 8 Sep 2026 14:41:14 +0000 (UTC) Message-ID: <7c9f6ec3-5886-41ea-8803-d81019321d29@kernel.org> Date: Tue, 8 Sep 2026 16:41:09 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 17/24] powerpc/vdso: Enable the vdsocheck tool To: =?UTF-8?Q?Thomas_Wei=C3=9Fschuh?= , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt , Andy Lutomirski , Vincenzo Frascino , Kees Cook , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Richard Weinberger , Anton Ivanov , Johannes Berg , Russell King , Catalin Marinas , Will Deacon , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Huacai Chen , WANG Xuerui , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Thomas Bogendoerfer , Miguel Ojeda , Alex Gaynor , Gary Guo , =?UTF-8?Q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Danilo Krummrich , Thomas Gleixner , Boqun Feng , Nicolas Schier Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, linux-mm@kvack.org, linux-um@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, loongarch@lists.linux.dev, linux-s390@vger.kernel.org, linux-mips@vger.kernel.org, rust-for-linux@vger.kernel.org, linux-kbuild@vger.kernel.org, Jan Stancek , Arnaldo Carvalho de Melo , Alexandre Ghiti References: <20260908-vdso-absolute-reloc-v5-0-3a93791af1cf@linutronix.de> <20260908-vdso-absolute-reloc-v5-17-3a93791af1cf@linutronix.de> Content-Language: fr-FR From: "Christophe Leroy (CS GROUP)" In-Reply-To: <20260908-vdso-absolute-reloc-v5-17-3a93791af1cf@linutronix.de> 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 CgpMZSAwOC8wOS8yMDI2IMOgIDA4OjMzLCBUaG9tYXMgV2Vpw59zY2h1aCBhIMOpY3JpdMKgOgo+ IFRoZSB2ZHNvY2hlY2sgdG9vbCB2YWxpZGF0ZXMgdGhlIG9iamVjdCBmaWxlcyBhbmQgZmluYWwg LnNvIGxpYnJhcnkuCj4gSXQgY2FuIGRldGVjdCBpZiB0aGUgY29tcGlsZXIgY3JlYXRlZCByZWxv Y2F0aW9ucyB3aGljaCBhcmUgaW5jb21wYXRpYmxlCj4gd2l0aCB0aGUgdkRTTyB3aGljaCBuZWVk 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