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 X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C924AC43381 for ; Thu, 21 Feb 2019 14:43:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 916E12084D for ; Thu, 21 Feb 2019 14:43:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550760191; bh=yurzmFbNT/hILh44KojVvUp+Hwkws22pKIXvM9WIORk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Gl2y2kQ1mxw3skhoHvLdI0g/mdDWSyADTfS5/vglLJZeB2sFO9OIRof+g5Z2wf5kO JJVHrog/aay3qPzFIti5kuj+6uQNVFa7OOEqa9d/xWCzLN55rbRJp4Jk9tNk4umr8T GUjHCFEBL0NQyrXefSdIhDvrtA0rKsJbYMwMO1a4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729661AbfBUOnJ (ORCPT ); Thu, 21 Feb 2019 09:43:09 -0500 Received: from mail.kernel.org ([198.145.29.99]:38848 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728972AbfBUOnG (ORCPT ); Thu, 21 Feb 2019 09:43:06 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 22D892080D; Thu, 21 Feb 2019 14:43:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550760185; bh=yurzmFbNT/hILh44KojVvUp+Hwkws22pKIXvM9WIORk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IJWu7s4/RuKedug/ESFjdsZQBgw/zSrbuKA7YKQULLwVTLkjTzmn25rnV6lgpGF0j UfU28h6paRvEaMXattQWPUl6QZ8TCgoYEBKHVRG/tFaWlxU9+kxEwuFeOqCwqXjTFn IZ8eEcZWuwXIgWpn1AK2OH19oMMcxfp1LtJ1gzLY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ard Biesheuvel , Will Deacon , Linus Torvalds , Marc Zyngier , Mike Rapoport , Peter Zijlstra , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, linux-efi@vger.kernel.org, Ingo Molnar , Sasha Levin Subject: [PATCH 4.20 23/32] efi/arm: Revert "Defer persistent reservations until after paging_init()" Date: Thu, 21 Feb 2019 15:36:11 +0100 Message-Id: <20190221125252.267742511@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190221125250.855065214@linuxfoundation.org> References: <20190221125250.855065214@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.20-stable review patch. If anyone has any objections, please let me know. ------------------ Commit 582a32e708823e5957fd73ccd78dc4a9e49d21ea upstream. This reverts commit eff896288872d687d9662000ec9ae11b6d61766f, which deferred the processing of persistent memory reservations to a point where the memory may have already been allocated and overwritten, defeating the purpose. Signed-off-by: Ard Biesheuvel Acked-by: Will Deacon Cc: Linus Torvalds Cc: Marc Zyngier Cc: Mike Rapoport Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-arm-kernel@lists.infradead.org Cc: linux-efi@vger.kernel.org Link: http://lkml.kernel.org/r/20190215123333.21209-3-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar Signed-off-by: Ard Biesheuvel Signed-off-by: Sasha Levin --- arch/arm64/kernel/setup.c | 1 - drivers/firmware/efi/efi.c | 4 ---- drivers/firmware/efi/libstub/arm-stub.c | 3 --- include/linux/efi.h | 7 ------- 4 files changed, 15 deletions(-) diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index f4fc1e0544b73..953e316521fca 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -313,7 +313,6 @@ void __init setup_arch(char **cmdline_p) arm64_memblock_init(); paging_init(); - efi_apply_persistent_mem_reservations(); acpi_table_upgrade(); diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c index 415849bab2339..bde3822cf539a 100644 --- a/drivers/firmware/efi/efi.c +++ b/drivers/firmware/efi/efi.c @@ -592,11 +592,7 @@ int __init efi_config_parse_tables(void *config_tables, int count, int sz, early_memunmap(tbl, sizeof(*tbl)); } - return 0; -} -int __init efi_apply_persistent_mem_reservations(void) -{ if (efi.mem_reserve != EFI_INVALID_TABLE_ADDR) { unsigned long prsv = efi.mem_reserve; diff --git a/drivers/firmware/efi/libstub/arm-stub.c b/drivers/firmware/efi/libstub/arm-stub.c index 3d36142cf8120..30ac0c975f8a1 100644 --- a/drivers/firmware/efi/libstub/arm-stub.c +++ b/drivers/firmware/efi/libstub/arm-stub.c @@ -75,9 +75,6 @@ void install_memreserve_table(efi_system_table_t *sys_table_arg) efi_guid_t memreserve_table_guid = LINUX_EFI_MEMRESERVE_TABLE_GUID; efi_status_t status; - if (IS_ENABLED(CONFIG_ARM)) - return; - status = efi_call_early(allocate_pool, EFI_LOADER_DATA, sizeof(*rsv), (void **)&rsv); if (status != EFI_SUCCESS) { diff --git a/include/linux/efi.h b/include/linux/efi.h index 100ce4a4aff6c..845174e113ce9 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -1167,8 +1167,6 @@ static inline bool efi_enabled(int feature) extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused); extern bool efi_is_table_address(unsigned long phys_addr); - -extern int efi_apply_persistent_mem_reservations(void); #else static inline bool efi_enabled(int feature) { @@ -1187,11 +1185,6 @@ static inline bool efi_is_table_address(unsigned long phys_addr) { return false; } - -static inline int efi_apply_persistent_mem_reservations(void) -{ - return 0; -} #endif extern int efi_status_to_err(efi_status_t status); -- 2.19.1