Message ID | 20230508185218.802324532@linutronix.de (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <xen-devel-bounces@lists.xenproject.org> X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 D4D34C7EE22 for <xen-devel@archiver.kernel.org>; Mon, 8 May 2023 19:47:56 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.531806.827768 (Exim 4.92) (envelope-from <xen-devel-bounces@lists.xenproject.org>) id 1pw6pn-0008F8-L0; Mon, 08 May 2023 19:47:47 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 531806.827768; Mon, 08 May 2023 19:47:47 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from <xen-devel-bounces@lists.xenproject.org>) id 1pw6pm-0008CV-VJ; Mon, 08 May 2023 19:47:46 +0000 Received: by outflank-mailman (input) for mailman id 531806; Mon, 08 May 2023 19:47:44 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from <SRS0=49Re=A5=linutronix.de=tglx@srs-se1.protection.inumbo.net>) id 1pw6mL-0004GB-TI for xen-devel@lists.xenproject.org; Mon, 08 May 2023 19:44:13 +0000 Received: from galois.linutronix.de (galois.linutronix.de [193.142.43.55]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id b55ad22d-edd8-11ed-b226-6b7b168915f2; Mon, 08 May 2023 21:44:13 +0200 (CEST) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion <xen-devel.lists.xenproject.org> List-Unsubscribe: <https://lists.xenproject.org/mailman/options/xen-devel>, <mailto:xen-devel-request@lists.xenproject.org?subject=unsubscribe> List-Post: <mailto:xen-devel@lists.xenproject.org> List-Help: <mailto:xen-devel-request@lists.xenproject.org?subject=help> List-Subscribe: <https://lists.xenproject.org/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xenproject.org?subject=subscribe> Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" <xen-devel-bounces@lists.xenproject.org> X-Inumbo-ID: b55ad22d-edd8-11ed-b226-6b7b168915f2 Message-ID: <20230508185218.802324532@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1683575052; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=HVjUF1EbgoHvP2JET34IHqSOI4Hcbuoi5HyMhczyA/0=; b=f87S8Ive1ie4K+DuiLg7usxJY5CRCksJCqSgCkxD5uZH7y4x+OJFuZWNm0Taip1XPPiDD6 MNH0b+hp2o5RbiOVox1gno/kYayr67OXDsY3LQy/XL1EajtZ65KomNmMKrjSPGzPHIQ6mt Bc0Q0qOP9/5ItgD7CpD7wNvTDGfz7YuG1nQmd5y2Lv904N1i53sg9+MQ+HioP83fuoz27l K0h3votn/bkWzE6uLiONR6KdsjL/p4GqVASZ+gwe2bmO48I4HcfU9n8eyvXRqDwkYb7s44 Njvuj3M2dK+aBiLKQsshzndlNWX014TMRWinVJi/9FwvNn2qCERvNBTYOkZNDg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1683575052; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=HVjUF1EbgoHvP2JET34IHqSOI4Hcbuoi5HyMhczyA/0=; b=0jP1z8zyc9UIx2xHWlL0pghnJTSR5ytXBwb/OqMmY//ybrAvid6zf5b8IChN8VPr3CVlpG 1ard2l2bnsfXlBBQ== From: Thomas Gleixner <tglx@linutronix.de> To: LKML <linux-kernel@vger.kernel.org> Cc: x86@kernel.org, David Woodhouse <dwmw2@infradead.org>, Andrew Cooper <andrew.cooper3@citrix.com>, Brian Gerst <brgerst@gmail.com>, Arjan van de Veen <arjan@linux.intel.com>, Paolo Bonzini <pbonzini@redhat.com>, Paul McKenney <paulmck@kernel.org>, Tom Lendacky <thomas.lendacky@amd.com>, Sean Christopherson <seanjc@google.com>, Oleksandr Natalenko <oleksandr@natalenko.name>, Paul Menzel <pmenzel@molgen.mpg.de>, "Guilherme G. Piccoli" <gpiccoli@igalia.com>, Piotr Gorski <lucjan.lucjanov@gmail.com>, Usama Arif <usama.arif@bytedance.com>, Juergen Gross <jgross@suse.com>, Boris Ostrovsky <boris.ostrovsky@oracle.com>, xen-devel@lists.xenproject.org, Russell King <linux@armlinux.org.uk>, Arnd Bergmann <arnd@arndb.de>, linux-arm-kernel@lists.infradead.org, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Guo Ren <guoren@kernel.org>, linux-csky@vger.kernel.org, Thomas Bogendoerfer <tsbogend@alpha.franken.de>, linux-mips@vger.kernel.org, "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>, Helge Deller <deller@gmx.de>, linux-parisc@vger.kernel.org, Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>, linux-riscv@lists.infradead.org, Mark Rutland <mark.rutland@arm.com>, Sabin Rapan <sabrapan@amazon.com>, "Michael Kelley (LINUX)" <mikelley@microsoft.com>, David Woodhouse <dwmw@amazon.co.uk> Subject: [patch v3 28/36] cpu/hotplug: Reset task stack state in _cpu_up() References: <20230508181633.089804905@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Date: Mon, 8 May 2023 21:44:12 +0200 (CEST) |
Series |
cpu/hotplug, x86: Reworked parallel CPU bringup
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--- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -771,12 +771,6 @@ static int bringup_cpu(unsigned int cpu) return -EAGAIN; /* - * Reset stale stack state from the last time this CPU was online. - */ - scs_task_reset(idle); - kasan_unpoison_task_stack(idle); - - /* * Some architectures have to walk the irq descriptors to * setup the vector space for the cpu which comes online. * Prevent irq alloc/free across the bringup. @@ -1583,6 +1577,12 @@ static int _cpu_up(unsigned int cpu, int ret = PTR_ERR(idle); goto out; } + + /* + * Reset stale stack state from the last time this CPU was online. + */ + scs_task_reset(idle); + kasan_unpoison_task_stack(idle); } cpuhp_tasks_frozen = tasks_frozen;