From patchwork Thu Jul 7 09:22:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Penny Zheng X-Patchwork-Id: 12909269 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 48A22C433EF for ; Thu, 7 Jul 2022 09:23:24 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.362800.593026 (Exim 4.92) (envelope-from ) id 1o9Nj3-00032z-8h; Thu, 07 Jul 2022 09:23:09 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 362800.593026; Thu, 07 Jul 2022 09:23:09 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1o9Nj3-00032o-57; Thu, 07 Jul 2022 09:23:09 +0000 Received: by outflank-mailman (input) for mailman id 362800; Thu, 07 Jul 2022 09:23:07 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1o9Nj1-00032J-CI for xen-devel@lists.xenproject.org; Thu, 07 Jul 2022 09:23:07 +0000 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by se1-gles-flk1.inumbo.com (Halon) with ESMTP id 682b3be6-fdd6-11ec-924f-1f966e50362f; Thu, 07 Jul 2022 11:23:05 +0200 (CEST) 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 BBEA81063; Thu, 7 Jul 2022 02:23:05 -0700 (PDT) Received: from a011292.shanghai.arm.com (a011292.shanghai.arm.com [10.169.190.94]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 5CB9D3F792; Thu, 7 Jul 2022 02:23:01 -0700 (PDT) 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: 682b3be6-fdd6-11ec-924f-1f966e50362f From: Penny Zheng To: xen-devel@lists.xenproject.org Cc: wei.chen@arm.com, Penny Zheng , Stefano Stabellini , Julien Grall , Bertrand Marquis , Volodymyr Babchuk , Andrew Cooper , George Dunlap , Jan Beulich , Wei Liu , Penny Zheng Subject: [PATCH v8 1/9] xen/arm: rename PGC_reserved to PGC_static Date: Thu, 7 Jul 2022 17:22:36 +0800 Message-Id: <20220707092244.485936-2-Penny.Zheng@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220707092244.485936-1-Penny.Zheng@arm.com> References: <20220707092244.485936-1-Penny.Zheng@arm.com> MIME-Version: 1.0 PGC_reserved could be ambiguous, and we have to tell what the pages are reserved for, so this commit intends to rename PGC_reserved to PGC_static, which clearly indicates the page is reserved for static memory. Signed-off-by: Penny Zheng Acked-by: Jan Beulich Acked-by: Julien Grall --- v8 changes - no change --- v7 changes: - no change --- v6 changes: - rename PGC_staticmem to PGC_static --- v5 changes: - new commit --- xen/arch/arm/include/asm/mm.h | 6 +++--- xen/common/page_alloc.c | 22 +++++++++++----------- 2 files changed, 14 insertions(+), 14 deletions(-) diff --git a/xen/arch/arm/include/asm/mm.h b/xen/arch/arm/include/asm/mm.h index c4bc3cd1e5..8b2481c1f3 100644 --- a/xen/arch/arm/include/asm/mm.h +++ b/xen/arch/arm/include/asm/mm.h @@ -108,9 +108,9 @@ struct page_info /* Page is Xen heap? */ #define _PGC_xen_heap PG_shift(2) #define PGC_xen_heap PG_mask(1, 2) - /* Page is reserved */ -#define _PGC_reserved PG_shift(3) -#define PGC_reserved PG_mask(1, 3) + /* Page is static memory */ +#define _PGC_static PG_shift(3) +#define PGC_static PG_mask(1, 3) /* ... */ /* Page is broken? */ #define _PGC_broken PG_shift(7) diff --git a/xen/common/page_alloc.c b/xen/common/page_alloc.c index fe0e15429a..ed56379b96 100644 --- a/xen/common/page_alloc.c +++ b/xen/common/page_alloc.c @@ -151,8 +151,8 @@ #define p2m_pod_offline_or_broken_replace(pg) BUG_ON(pg != NULL) #endif -#ifndef PGC_reserved -#define PGC_reserved 0 +#ifndef PGC_static +#define PGC_static 0 #endif /* @@ -2286,7 +2286,7 @@ int assign_pages( for ( i = 0; i < nr; i++ ) { - ASSERT(!(pg[i].count_info & ~(PGC_extra | PGC_reserved))); + ASSERT(!(pg[i].count_info & ~(PGC_extra | PGC_static))); if ( pg[i].count_info & PGC_extra ) extra_pages++; } @@ -2346,7 +2346,7 @@ int assign_pages( page_set_owner(&pg[i], d); smp_wmb(); /* Domain pointer must be visible before updating refcnt. */ pg[i].count_info = - (pg[i].count_info & (PGC_extra | PGC_reserved)) | PGC_allocated | 1; + (pg[i].count_info & (PGC_extra | PGC_static)) | PGC_allocated | 1; page_list_add_tail(&pg[i], page_to_list(d, &pg[i])); } @@ -2652,8 +2652,8 @@ void __init free_staticmem_pages(struct page_info *pg, unsigned long nr_mfns, scrub_one_page(pg); } - /* In case initializing page of static memory, mark it PGC_reserved. */ - pg[i].count_info |= PGC_reserved; + /* In case initializing page of static memory, mark it PGC_static. */ + pg[i].count_info |= PGC_static; } } @@ -2682,8 +2682,8 @@ static struct page_info * __init acquire_staticmem_pages(mfn_t smfn, for ( i = 0; i < nr_mfns; i++ ) { - /* The page should be reserved and not yet allocated. */ - if ( pg[i].count_info != (PGC_state_free | PGC_reserved) ) + /* The page should be static and not yet allocated. */ + if ( pg[i].count_info != (PGC_state_free | PGC_static) ) { printk(XENLOG_ERR "pg[%lu] Static MFN %"PRI_mfn" c=%#lx t=%#x\n", @@ -2697,10 +2697,10 @@ static struct page_info * __init acquire_staticmem_pages(mfn_t smfn, &tlbflush_timestamp); /* - * Preserve flag PGC_reserved and change page state + * Preserve flag PGC_static and change page state * to PGC_state_inuse. */ - pg[i].count_info = PGC_reserved | PGC_state_inuse; + pg[i].count_info = PGC_static | PGC_state_inuse; /* Initialise fields which have other uses for free pages. */ pg[i].u.inuse.type_info = 0; page_set_owner(&pg[i], NULL); @@ -2722,7 +2722,7 @@ static struct page_info * __init acquire_staticmem_pages(mfn_t smfn, out_err: while ( i-- ) - pg[i].count_info = PGC_reserved | PGC_state_free; + pg[i].count_info = PGC_static | PGC_state_free; spin_unlock(&heap_lock);