From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-2899084-1519908924-2-17005596757719263630 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.249, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='CN', FromHeader='org', MailFrom='org' X-Spam-charsets: X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1519908924; b=AnLec7+bR8JpSXWrmUmafXVo2Go9PT/OYMgV7WiU2pzZ4JR 2uhAnXIrm9K+3EL9z/KAEam+El1jgf60+U9+uCRi/r/WsA3YL7lsDLI7WiLjB5K5 vAjaQQBNY8A2gnWrCd0hOLuKHTMwdIP7WuGJbMdwVGpd1TvEv33bkGAQ5dqu2H0t 3cFcR4Q7wrVLYQ5IDk8CkLCXoBW/hErMkZ8INXnGvIk9zjQv3yP1ebUh/TFqHYRe NRC2UBQV2aEH3lwY5OGZlPypRqlZDOeXJNAOcYnM3cYOEH05lF0SYnzaM3pZPsCo BQNKZvV/ygDzQ+trOb0lB+DFNaMyj51PIC6/laA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:sender:list-id; s=arctest; t=1519908924; bh=Bg7B0hfDb1LbDSK0bEabGd/Si+r1Y+auDWs+NQonZeA=; b=v5BZHDE1ML7X ftAEES8wuSZUBveb7HJBtUohw7m09PaPYz3R0vdfzvbsKn1m73bHG/iZRFuMJ6/7 eR8KQm5hAnlPLnSu3IwpIvSI2WHFtBbDHgIed1s/b3jvs6uEdIL9tf9aAw0IHRej in9NeZGbMlC1O4bhQPkQvfGgs+JdmCVDANsDiFF8qID16kO+pXnZ4qhj0ksGC+ST blLy+Y7R0Q3zTA2OZ9tAFX+0lsLKKB7/M7aTzROF/wKWl/YKzwk0Gj+YxG/K3WHD qq2BDsjMUXJOMXQ+vubiAwMDFlDCivKdQyn4U6jl0vgD8QpwQrOtwPZm5GgchV9w WPTbgevjgQ== ARC-Authentication-Results: i=1; mx1.messagingengine.com; arc=none (no signatures found); dkim=pass (1024-bit rsa key sha256) header.d=linaro.org header.i=@linaro.org header.b=Em5SaGCp x-bits=1024 x-keytype=rsa x-algorithm=sha256 x-selector=google; dmarc=pass (p=none,has-list-id=yes,d=none) header.from=linaro.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-google-dkim=pass (2048-bit rsa key) header.d=1e100.net header.i=@1e100.net header.b=WBKLbEIW; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linaro.org header.result=pass header_is_org_domain=yes Authentication-Results: mx1.messagingengine.com; arc=none (no signatures found); dkim=pass (1024-bit rsa key sha256) header.d=linaro.org header.i=@linaro.org header.b=Em5SaGCp x-bits=1024 x-keytype=rsa x-algorithm=sha256 x-selector=google; dmarc=pass (p=none,has-list-id=yes,d=none) header.from=linaro.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-google-dkim=pass (2048-bit rsa key) header.d=1e100.net header.i=@1e100.net header.b=WBKLbEIW; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linaro.org header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030486AbeCAMzT (ORCPT ); Thu, 1 Mar 2018 07:55:19 -0500 Received: from mail-pl0-f65.google.com ([209.85.160.65]:32852 "EHLO mail-pl0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030549AbeCAMzQ (ORCPT ); Thu, 1 Mar 2018 07:55:16 -0500 X-Google-Smtp-Source: AG47ELtE0egcSDkbOW2sCHkd+qP67Yy8XRiwKXOj8uugzbA1Z7v5lP+mIxWrJL5etdQlLFPpwgcOhQ== From: Alex Shi To: Marc Zyngier , Will Deacon , Ard Biesheuvel , Catalin Marinas , stable@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Laura Abbott , Alex Shi Subject: [PATCH 01/45] mm: Introduce lm_alias Date: Thu, 1 Mar 2018 20:53:38 +0800 Message-Id: <1519908862-11425-2-git-send-email-alex.shi@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1519908862-11425-1-git-send-email-alex.shi@linaro.org> References: <1519908862-11425-1-git-send-email-alex.shi@linaro.org> Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Laura Abbott commit 568c5fe5a54 upstream. Certain architectures may have the kernel image mapped separately to alias the linear map. Introduce a macro lm_alias to translate a kernel image symbol into its linear alias. This is used in part with work to add CONFIG_DEBUG_VIRTUAL support for arm64. Reviewed-by: Mark Rutland Tested-by: Mark Rutland Signed-off-by: Laura Abbott Signed-off-by: Will Deacon Signed-off-by: Alex Shi --- include/linux/mm.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/linux/mm.h b/include/linux/mm.h index 2217e2f..edd2480 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -76,6 +76,10 @@ extern int mmap_rnd_compat_bits __read_mostly; #define page_to_virt(x) __va(PFN_PHYS(page_to_pfn(x))) #endif +#ifndef lm_alias +#define lm_alias(x) __va(__pa_symbol(x)) +#endif + /* * To prevent common memory management code establishing * a zero page mapping on a read fault. -- 2.7.4 From mboxrd@z Thu Jan 1 00:00:00 1970 From: alex.shi@linaro.org (Alex Shi) Date: Thu, 1 Mar 2018 20:53:38 +0800 Subject: [PATCH 01/45] mm: Introduce lm_alias In-Reply-To: <1519908862-11425-1-git-send-email-alex.shi@linaro.org> References: <1519908862-11425-1-git-send-email-alex.shi@linaro.org> Message-ID: <1519908862-11425-2-git-send-email-alex.shi@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Laura Abbott commit 568c5fe5a54 upstream. Certain architectures may have the kernel image mapped separately to alias the linear map. Introduce a macro lm_alias to translate a kernel image symbol into its linear alias. This is used in part with work to add CONFIG_DEBUG_VIRTUAL support for arm64. Reviewed-by: Mark Rutland Tested-by: Mark Rutland Signed-off-by: Laura Abbott Signed-off-by: Will Deacon Signed-off-by: Alex Shi --- include/linux/mm.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/linux/mm.h b/include/linux/mm.h index 2217e2f..edd2480 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -76,6 +76,10 @@ extern int mmap_rnd_compat_bits __read_mostly; #define page_to_virt(x) __va(PFN_PHYS(page_to_pfn(x))) #endif +#ifndef lm_alias +#define lm_alias(x) __va(__pa_symbol(x)) +#endif + /* * To prevent common memory management code establishing * a zero page mapping on a read fault. -- 2.7.4