From patchwork Tue Nov 6 11:37:28 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ard Biesheuvel X-Patchwork-Id: 150254 Delivered-To: patch@linaro.org Received: by 2002:a2e:299d:0:0:0:0:0 with SMTP id p29-v6csp3775284ljp; Tue, 6 Nov 2018 03:37:42 -0800 (PST) X-Google-Smtp-Source: AJdET5cwe255I2jLWGuMNZCHru3rFTlLMgERLDtBXAr0UZook6MmKL3uCVwAv2zaEm6jXThGUIA6 X-Received: by 2002:a63:5d14:: with SMTP id r20mr23522574pgb.329.1541504262492; Tue, 06 Nov 2018 03:37:42 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1541504262; cv=none; d=google.com; s=arc-20160816; b=i1AxrAAVcHXw7wF20Vw9nBRJxBsyrVWXWPds3hDZXXwyo+OwgrM0v30uxxr1nkNtee 1tE7zXay2ZSQVb+WJueiivEB2yq+KTqyC0rqFGAm3kmlNh5FlCoRRhVUvRNTg4Xerxa5 Y+lj8s7+Ek/d8c86XzVosvXwp75+ugbAKj+lC8t2DOKS+E/ZRx3S5CJ8TKF0oTbQQbV2 2bN2d7/lGxacM7p7Dqp2EEuO0YFVzdPfMKBXJHmE8x3mhzCmzICwppFhP/8qv8ljig6D ayv7RuG5fbYKsHRAqBaMNe7OYU9MqQThppzEHW8JzXoCsxRe9wPkFm/k/AamTyfq8v1n OOpw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:from:dkim-signature; bh=rMpiQe5n2zXwdJYom5or3Q3ewTzVgcMoh25h27Drxgs=; b=Ml6VTm0+doAvcdh/qEtJGwvTySTZPlRHI6yveBSan+OauKBQV/m/huHzo9oiaKXYlj 0CURTxwgdxdIxTL6SWEqCuiUe+D14l/6DX6NCBF161caZGAF8BXtTeDbSnAPpbaJI8vP y5nCRX6oOmHwzydyWyZtTFd0/y0FC0Y93T43nzd1GppyfBYVL98wGwQDvD/pnqopCxaE FBdBedhzoudiB1fc/tY7iBhL1QWG2qKHKle8i8GlgvM+hU8Vu9dua2Q6Ka2F4Eevrrwr p97shP8bBKDRuY0IRnBoYipJdJ3WMlfDI49S8bofAybLEo/6EqH1/YDxTjfKnsmq6iMn 01HA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=h6+kLkT7; spf=pass (google.com: best guess record for domain of linux-efi-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-efi-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id q10-v6si44073084pls.344.2018.11.06.03.37.42; Tue, 06 Nov 2018 03:37:42 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-efi-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=h6+kLkT7; spf=pass (google.com: best guess record for domain of linux-efi-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-efi-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730262AbeKFVC2 (ORCPT + 3 others); Tue, 6 Nov 2018 16:02:28 -0500 Received: from mail-wr1-f67.google.com ([209.85.221.67]:38692 "EHLO mail-wr1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729728AbeKFVC2 (ORCPT ); Tue, 6 Nov 2018 16:02:28 -0500 Received: by mail-wr1-f67.google.com with SMTP id d10-v6so13097631wrs.5 for ; Tue, 06 Nov 2018 03:37:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=rMpiQe5n2zXwdJYom5or3Q3ewTzVgcMoh25h27Drxgs=; b=h6+kLkT7/1Ye7P/7EBgzczd1QbvMbQvjs8XNAqcEgS+TV/vBWYW0diRSff87zy48k+ zhg6T93XYXEVhLEMXShTNZOMRsODE2dpVq6j5s+Qt9VSL8/TTzVNYcQt8yJYML679kIt fXLD++j2i8HurU3w/Wmt2HfEbd2ux7Xdc/cCQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=rMpiQe5n2zXwdJYom5or3Q3ewTzVgcMoh25h27Drxgs=; b=LOAwT6mltmj1VKVQr5fUx5af0oNzhQZNmIV+4iAUBgo/lRYG68eemk/2oNyRfxZWy3 kzIV6WotTewFjOEWdLC+5howJaOTnWyfcxyKihBN5fgQnwPYEV1/MfhRxt0c9cKuNSvY SFVdSJXnrAY6MNYywQhgibMqxhQrHp73swbdwi/QruVtf4EZaTn8Gps6cA/x6k+H0e7k WexNgX3EC9qNkP6LtqmvECocUBRz1lLJN6mfVGPUORxfiaF43Go8wCeKedrPG7kmcdPQ tyGormAIceO2klBuKdaojPeILCGIzyrNSRtscrerasgGJt6cp6CCww5/E367VR7jGUmG 4CVg== X-Gm-Message-State: AGRZ1gLFKP3n7U+k8lfJazN07dW8JWyb8t1cVZj6+s69lQ4xnpQEJyfL s6FQ/ATh0pDV1ICB/LDsJCVJtw== X-Received: by 2002:a5d:408c:: with SMTP id o12-v6mr13797187wrp.90.1541504259980; Tue, 06 Nov 2018 03:37:39 -0800 (PST) Received: from harold.home ([2a01:cb1d:112:6f00:3117:2b29:5ef7:a9e5]) by smtp.gmail.com with ESMTPSA id t187-v6sm1431529wmt.45.2018.11.06.03.37.38 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 06 Nov 2018 03:37:38 -0800 (PST) From: Ard Biesheuvel To: linux-arm-kernel@lists.infradead.org Cc: bhsharma@redhat.com, linux-efi@vger.kernel.org, will.deacon@arm.com, mark.rutland@arm.com, marc.zyngier@arm.com, Ard Biesheuvel Subject: [PATCH 0/4] arm/efi: fix memblock reallocation crash due to persistent reservations Date: Tue, 6 Nov 2018 12:37:28 +0100 Message-Id: <20181106113732.16351-1-ard.biesheuvel@linaro.org> X-Mailer: git-send-email 2.19.1 MIME-Version: 1.0 Sender: linux-efi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-efi@vger.kernel.org This series addresses the kexec/kdump crash on arm64 system with many CPUs that was reported by Bhupesh. Patches #1 and #2 fix the actual crash. Patches #3 and #4 optimize the EFI persistent memreserve infrastructure so that fewer memblock reservations are required. Ard Biesheuvel (4): arm64: memblock: don't permit memblock resizing until linear mapping is up efi/arm: defer persistent reservations until after paging_init() efi: permit multiple entries in persistent memreserve data structure efi: reduce the amount of memblock reservations for persistent allocations arch/arm/kernel/setup.c | 1 + arch/arm64/kernel/setup.c | 1 + arch/arm64/mm/init.c | 2 - arch/arm64/mm/mmu.c | 2 + drivers/firmware/efi/efi.c | 59 ++++++++++++++------ drivers/firmware/efi/libstub/arm-stub.c | 2 +- include/linux/efi.h | 23 +++++++- 7 files changed, 68 insertions(+), 22 deletions(-) -- 2.19.1 Tested-by: Marc Zyngier Acked-by: Will Deacon