From patchwork Fri Nov 29 09:12:33 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luca Fancellu X-Patchwork-Id: 13888519 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 lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 207F3D6EBF2 for ; Fri, 29 Nov 2024 09:13:57 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.845798.1261139 (Exim 4.92) (envelope-from ) id 1tGx4M-0004xc-Go; Fri, 29 Nov 2024 09:13:46 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 845798.1261139; Fri, 29 Nov 2024 09:13:46 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1tGx4M-0004vn-Ar; Fri, 29 Nov 2024 09:13:46 +0000 Received: by outflank-mailman (input) for mailman id 845798; Fri, 29 Nov 2024 09:13:45 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1tGx4L-0004rr-88 for xen-devel@lists.xenproject.org; Fri, 29 Nov 2024 09:13:45 +0000 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by se1-gles-sth1.inumbo.com (Halon) with ESMTP id 39e0a437-ae32-11ef-a0cf-8be0dac302b0; Fri, 29 Nov 2024 10:13:41 +0100 (CET) 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 A8D611424; Fri, 29 Nov 2024 01:14:10 -0800 (PST) Received: from e125770.cambridge.arm.com (e125770.arm.com [10.1.199.43]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 625203F58B; Fri, 29 Nov 2024 01:13:40 -0800 (PST) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 39e0a437-ae32-11ef-a0cf-8be0dac302b0 X-Custom-Connection: eyJyZW1vdGVpcCI6IjIxNy4xNDAuMTEwLjE3MiIsImhlbG8iOiJmb3NzLmFybS5jb20ifQ== X-Custom-Transaction: eyJpZCI6IjM5ZTBhNDM3LWFlMzItMTFlZi1hMGNmLThiZTBkYWMzMDJiMCIsInRzIjoxNzMyODcxNjIxLjg2OTYzMSwic2VuZGVyIjoibHVjYS5mYW5jZWxsdUBhcm0uY29tIiwicmVjaXBpZW50IjoieGVuLWRldmVsQGxpc3RzLnhlbnByb2plY3Qub3JnIn0= From: Luca Fancellu To: xen-devel@lists.xenproject.org Cc: Andrew Cooper , Jan Beulich , Julien Grall , Stefano Stabellini Subject: [PATCH v3 1/5] common/vmap: Fall back to simple allocator when !HAS_VMAP Date: Fri, 29 Nov 2024 09:12:33 +0000 Message-Id: <20241129091237.3409304-2-luca.fancellu@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241129091237.3409304-1-luca.fancellu@arm.com> References: <20241129091237.3409304-1-luca.fancellu@arm.com> MIME-Version: 1.0 When HAS_VMAP is disabled, the xv{malloc,zalloc,...} functions should fall back to the simple x{malloc,zalloc,...} variant, implement that because MPU systems won't have virtual memory. Additionally remove VMAP_VIRT_START from vmap.h guards since MPU systems won't have it defined. Signed-off-by: Luca Fancellu --- Changes from v2: - Don't protect declarations. Changes from v1: - put back static inline iounmap - changed commit message - hide not used declaration for system with !HAS_VMAP - correct function declared in xvmalloc.h to be static inline - prefer '#ifdef' instead of '#if defined' where possible --- --- xen/include/xen/vmap.h | 2 +- xen/include/xen/xvmalloc.h | 36 +++++++++++++++++++++++++++++++----- 2 files changed, 32 insertions(+), 6 deletions(-) diff --git a/xen/include/xen/vmap.h b/xen/include/xen/vmap.h index c1dd7ac22f30..26c831757a11 100644 --- a/xen/include/xen/vmap.h +++ b/xen/include/xen/vmap.h @@ -5,7 +5,7 @@ * purpose area (VMAP_DEFAULT) and a livepatch-specific area (VMAP_XEN). The * latter is used when loading livepatches and the former for everything else. */ -#if !defined(__XEN_VMAP_H__) && defined(VMAP_VIRT_START) +#ifndef __XEN_VMAP_H__ #define __XEN_VMAP_H__ #include diff --git a/xen/include/xen/xvmalloc.h b/xen/include/xen/xvmalloc.h index 440d85a284bb..e97a30f61e96 100644 --- a/xen/include/xen/xvmalloc.h +++ b/xen/include/xen/xvmalloc.h @@ -40,20 +40,46 @@ ((typeof(ptr))_xvrealloc(ptr, offsetof(typeof(*(ptr)), field[nr]), \ __alignof__(typeof(*(ptr))))) +#ifdef CONFIG_HAS_VMAP + /* Free any of the above. */ void xvfree(void *va); +/* Underlying functions */ +void *_xvmalloc(size_t size, unsigned int align); +void *_xvzalloc(size_t size, unsigned int align); +void *_xvrealloc(void *va, size_t size, unsigned int align); + +#else /* !CONFIG_HAS_VMAP */ + +static inline void xvfree(void *va) +{ + xfree(va); +} + +static inline void *_xvmalloc(size_t size, unsigned int align) +{ + return _xmalloc(size, align); +} + +static inline void *_xvzalloc(size_t size, unsigned int align) +{ + return _xzalloc(size, align); +} + +static inline void *_xvrealloc(void *va, size_t size, unsigned int align) +{ + return _xrealloc(va, size, align); +} + +#endif /* CONFIG_HAS_VMAP */ + /* Free an allocation, and zero the pointer to it. */ #define XVFREE(p) do { \ xvfree(p); \ (p) = NULL; \ } while ( false ) -/* Underlying functions */ -void *_xvmalloc(size_t size, unsigned int align); -void *_xvzalloc(size_t size, unsigned int align); -void *_xvrealloc(void *va, size_t size, unsigned int align); - static inline void *_xvmalloc_array( size_t size, unsigned int align, unsigned long num) {