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=-17.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 05918C433B4 for ; Thu, 22 Apr 2021 14:44:54 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 8CFB66141C for ; Thu, 22 Apr 2021 14:44:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8CFB66141C Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=suse.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.115462.220295 (Exim 4.92) (envelope-from ) id 1lZaZK-0003BS-UU; Thu, 22 Apr 2021 14:44:38 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 115462.220295; Thu, 22 Apr 2021 14:44:38 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lZaZK-0003BL-RQ; Thu, 22 Apr 2021 14:44:38 +0000 Received: by outflank-mailman (input) for mailman id 115462; Thu, 22 Apr 2021 14:44:37 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lZaZJ-0003BD-Nb for xen-devel@lists.xenproject.org; Thu, 22 Apr 2021 14:44:37 +0000 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 22b32c30-555e-4039-b98a-5e5c24665c90; Thu, 22 Apr 2021 14:44:36 +0000 (UTC) Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 28625B16A; Thu, 22 Apr 2021 14:44:36 +0000 (UTC) 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: 22b32c30-555e-4039-b98a-5e5c24665c90 X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1619102676; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=CX7ycSIbHLxk9/beplw9uWXkdYfiG5DPYy83G5AM4JE=; b=rcA4yehWdnrNhng0HkIHI17UjFEXc9hI6PbENa4vqnKqE19m4FAG505qY7Ew/dLNlHe4U7 QkXQ9lUHaPKlMkgQNillDAcGZpSVslNfoJ4a8iq/d0RVENOHruxQw3LSTAmfKWCUCweDXk ooZFonzxWH73Oce3Z+oJqmFsXL9nlzY= Subject: [PATCH v3 02/22] x86/xstate: use xvzalloc() for save area allocation From: Jan Beulich To: "xen-devel@lists.xenproject.org" Cc: Andrew Cooper , George Dunlap , Wei Liu , =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= References: <322de6db-e01f-0b57-5777-5d94a13c441a@suse.com> Message-ID: <1fec148f-a5b2-5102-a790-e908d6f040c9@suse.com> Date: Thu, 22 Apr 2021 16:44:36 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.10.0 MIME-Version: 1.0 In-Reply-To: <322de6db-e01f-0b57-5777-5d94a13c441a@suse.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit This is in preparation for the area size exceeding a page's worth of space, as will happen with AMX as well as Architectural LBR. Signed-off-by: Jan Beulich --- a/xen/arch/x86/xstate.c +++ b/xen/arch/x86/xstate.c @@ -8,6 +8,7 @@ #include #include #include +#include #include #include #include @@ -522,7 +523,7 @@ int xstate_alloc_save_area(struct vcpu * /* XSAVE/XRSTOR requires the save area be 64-byte-boundary aligned. */ BUILD_BUG_ON(__alignof(*save_area) < 64); - save_area = _xzalloc(size, __alignof(*save_area)); + save_area = _xvzalloc(size, __alignof(*save_area)); if ( save_area == NULL ) return -ENOMEM; @@ -543,8 +544,7 @@ int xstate_alloc_save_area(struct vcpu * void xstate_free_save_area(struct vcpu *v) { - xfree(v->arch.xsave_area); - v->arch.xsave_area = NULL; + XVFREE(v->arch.xsave_area); } static unsigned int _xstate_ctxt_size(u64 xcr0)