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 69780C77B75 for ; Tue, 18 Apr 2023 12:14:46 +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-Transfer-Encoding:Content-Type: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=/UOk4MZme5Nl8nIATTW+LNoh5rbN8Bbmxy+3nk85TYM=; b=ywIOA6nRCVdkBg sCCksWlzJnJRPUWW4M4xY4BJD3mhGgMz6a/Qt2cRwGw5HMEkhRoh+p278fXkLnp7wdzYcM/u0UpbQ 5qVsRex9AmPosQI3O09YbZ42/3Z4yYRbvpPW62piwA+/S1/2dhdN4itqfoNDVXaQ4y+UZq8qe2JAk YX61m28jMI20eKoJ9xtV9ZibjcqAZUEqtrfrCodd6PJqENsB97CbodNalQr6mlciZduXY1k7+LWAU TBDO5kiBJQ/cogn3pZjD+Oegyps4aUF8+OR3YF7SN1W3R5fX2agLdkHUIcNxcggX5Bro729rJuqPn ooU/kOsbona9FcT05SPQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pokDd-0024p6-20; Tue, 18 Apr 2023 12:13:57 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pokDa-0024nq-12 for linux-arm-kernel@lists.infradead.org; Tue, 18 Apr 2023 12:13:56 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 81E6E1691; Tue, 18 Apr 2023 05:14:30 -0700 (PDT) Received: from [10.57.21.174] (unknown [10.57.21.174]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 511963F587; Tue, 18 Apr 2023 05:13:45 -0700 (PDT) Message-ID: Date: Tue, 18 Apr 2023 13:14:05 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.9.0 Subject: Re: SMP enablement on Cortex-R52 (using PSCI ?) To: Ayan Kumar Halder , mark.rutland@arm.com, lpieralisi@kernel.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Stefano Stabellini References: <1cb7d428-c047-1485-e39d-465806f6ef0b@amd.com> Content-Language: en-US From: Vladimir Murzin In-Reply-To: <1cb7d428-c047-1485-e39d-465806f6ef0b@amd.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230418_051354_427866_9D6B6030 X-CRM114-Status: GOOD ( 12.42 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, On 4/14/23 12:24, Ayan Kumar Halder wrote: > Hi PSCI developers, > > We have a SoC where there are 4 Cortex-R52 which is distributed in two clusters. So we have 2 Cortex-R52 in one cluster and 2 Cortex-R52 in another cluster. > > We wish to enable SMP on the 2 R52 within a cluster with Xen hypervisor (EL2 software) running on them. > > We are trying to explore if we can use PSCI for booting the secondary cores. > snip > > I wish to know how do we wake up the secondary core if PSCI is not supported. > It looks to me you need to provide/use platform defined method. I see that Xen provides struct platform_desc with smp_init and cpu_up callbacks... Cheers Vladimir > Kind regards, > Ayan > > > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel