Message ID | 20230504185937.858955768@linutronix.de (mailing list archive) |
---|---|
State | Superseded |
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 AE2C4C77B7C for <xen-devel@archiver.kernel.org>; Thu, 4 May 2023 19:09:46 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.529934.825013 (Exim 4.92) (envelope-from <xen-devel-bounces@lists.xenproject.org>) id 1pueKZ-0006MH-KX; Thu, 04 May 2023 19:09:31 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 529934.825013; Thu, 04 May 2023 19:09:31 +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 1pueKZ-0006MA-Gy; Thu, 04 May 2023 19:09:31 +0000 Received: by outflank-mailman (input) for mailman id 529934; Thu, 04 May 2023 19:09:30 +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=srgM=AZ=linutronix.de=tglx@srs-se1.protection.inumbo.net>) id 1pueE1-00042j-09 for xen-devel@lists.xenproject.org; Thu, 04 May 2023 19:02:45 +0000 Received: from galois.linutronix.de (galois.linutronix.de [2a0a:51c0:0:12e:550::1]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id 406aadd9-eaae-11ed-b226-6b7b168915f2; Thu, 04 May 2023 21:02:44 +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: 406aadd9-eaae-11ed-b226-6b7b168915f2 Message-ID: <20230504185937.858955768@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1683226964; 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=x1gYrMcqzm40p2bz6RsOmSrXlBcSvXXbnfB8HNeCbJU=; b=F9VwenKVSYd9QFli8bXNV/fz9qUSdzJcPELJ1ngRD9BxyzaHEgcu2cC0/b4kuprOfTMBsR NCkyPWtTcKTi4mTU6aAeMY6PYflFdg/QnWMligdTnr5DQ53G/59w7N1RxTuaJMuxKaB+6k fnxGx7t6MsQx4TP0A/Wv1B3YJqsjI01JirGXHQPo53zTdX5Z488sLyftTciloBgiN9k5k/ bzf3t4Qwlj6lxCy0qHukKPQMZGDuh3h1yP7MJWtYXWHVZt3htrK/Qtw9ul4ERCfXuX9Nze it6Ui4ad23Dml/cuVbhr6i6cHXzKyVbR3juE2BxVW820qfkeEJiZvG833WVS3g== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1683226964; 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=x1gYrMcqzm40p2bz6RsOmSrXlBcSvXXbnfB8HNeCbJU=; b=PK3VhwCrlpzYLlITMOVdXxhPHsDqoA73a6Tz+/QOqHPRfKtGaiwEqnA7EtTcL4VMvMoxp6 ebRWKW/d8KnEHmAA== 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 V2 28/38] cpu/hotplug: Reset task stack state in _cpu_up() References: <20230504185733.126511787@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Date: Thu, 4 May 2023 21:02:43 +0200 (CEST) |
Series |
cpu/hotplug, x86: Reworked parallel CPU bringup
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expand
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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;