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 28D85E95A8E for ; Mon, 9 Oct 2023 11:31:04 +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:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=Et84k+ZaeOXZ2ebxo4daOLYjsR0jHbhQ321PEE/5xpc=; b=ELk3ftkppAoKiZ fXRJPLpaT5VBRi0MHk25ZguSRubCcMf5p6t6mDEQ7Ya9PXrpK9s7evGpTdMPCtg2Ix4vpOhd/aJUk hk/oHN6Lhvyhn7ADCYFSEj8gpmwpV+p95W+XNMSItpK/tjqAzMyyDn9yJCJvwB6790dKnSjMP0FH5 Oegly1Q4GFuvrzyu3pPZcGevpmCDcAD13fHrfMu3r4ui/XWaCLVk8XM2so/tmj9zevsTYwnrDeGaI FNlQjQfYfzGYzDmEJXOuttPhZGf5qZxIMwLYjCzaFpMiZXVvDX0DyvchydCUeezXFWXOnVKN7V01I Y+L5fGmXwCZmJTi2dO0w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qpoTU-00ATBd-0N; Mon, 09 Oct 2023 11:31:00 +0000 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qpoTQ-00AT8j-1A for kexec@lists.infradead.org; Mon, 09 Oct 2023 11:30:58 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1696851052; 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: content-transfer-encoding:content-transfer-encoding; bh=AucLLdvUakuzR+OKAnMghovN188k9ydHfEOSC44ux8U=; b=Q17EC1eKnXQojhgcyt30NNeKuPlYi3WU0nub7ef40TU+Tz7eJnRCqDNeGYRB1I8hejrljl nYlSsq3wwE74OPz26vu6HnuEau6RnztKtwOtRkW9m/oTMYoCV4eJE+QKrUgjlEvhAul91Z Oj8hmIf3Nefm2mnXg5ymCZZ3NGsIRng= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-272-RNfrfiIBOGC17ZfULLohZg-1; Mon, 09 Oct 2023 07:30:51 -0400 X-MC-Unique: RNfrfiIBOGC17ZfULLohZg-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 6737F85A5BD; Mon, 9 Oct 2023 11:30:50 +0000 (UTC) Received: from piliu.users.ipa.redhat.com (unknown [10.72.120.3]) by smtp.corp.redhat.com (Postfix) with ESMTP id 188092156711; Mon, 9 Oct 2023 11:30:45 +0000 (UTC) From: Pingfan Liu To: linuxppc-dev@lists.ozlabs.org Cc: Pingfan Liu , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Mahesh Salgaonkar , Wen Xiong , Baoquan He , Ming Lei , kexec@lists.infradead.org Subject: [PATCHv8 0/5] enable nr_cpus for powerpc Date: Mon, 9 Oct 2023 19:30:31 +0800 Message-Id: <20231009113036.45988-1-piliu@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.6 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231009_043056_496419_83A6BCEE X-CRM114-Status: GOOD ( 10.13 ) X-BeenThere: kexec@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: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org Since my last v4 [1], the code has undergone great changes. The paca[] array has been reorganized and indexed by paca_ptrs[], which dramatically decreases the memory consumption even if there are many unpresent cpus in the middle. However, reordering the logical cpu numbers can further decrease the size of paca_ptrs[] in the kdump case. So I keep [1-2/5], which rotate-shifts the cpu's sequence number in the device tree to obtain the logical cpu id. Patch [3-5/5] make further efforts to decrease the nr_cpus to be less than or equal to two. [1]: https://lore.kernel.org/linuxppc-dev/1520829790-14029-1-git-send-email-kernelfans@gmail.com/ --- v7 -> v8 Fix bug when turning on DEBUG macro Introducing [PATCHv7 4/5] powerpc/cpu: Skip impossible cpu during iteration on a core, which avoid access to unpopulated pcpu data. Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Christophe Leroy Cc: Mahesh Salgaonkar Cc: Wen Xiong Cc: Baoquan He Cc: Ming Lei Cc: kexec@lists.infradead.org To: linuxppc-dev@lists.ozlabs.org Pingfan Liu (5): powerpc/setup : Enable boot_cpu_hwid for PPC32 powerpc/setup: Loosen the mapping between cpu logical id and its seq in dt powerpc/setup: Handle the case when boot_cpuid greater than nr_cpus powerpc/cpu: Skip impossible cpu during iteration on a core powerpc/setup: alloc extra paca_ptrs to hold boot_cpuid arch/powerpc/include/asm/cputhreads.h | 6 ++ arch/powerpc/include/asm/smp.h | 2 +- arch/powerpc/kernel/paca.c | 10 ++- arch/powerpc/kernel/prom.c | 29 +++--- arch/powerpc/kernel/setup-common.c | 108 ++++++++++++++++++----- arch/powerpc/kernel/smp.c | 2 +- arch/powerpc/kvm/book3s_hv.c | 7 +- arch/powerpc/platforms/powernv/idle.c | 32 +++---- arch/powerpc/platforms/powernv/subcore.c | 5 +- 9 files changed, 143 insertions(+), 58 deletions(-) -- 2.31.1 _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec