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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id CC82CCA0EE4 for ; Wed, 20 Aug 2025 17:44:25 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 3DD598E0023; Wed, 20 Aug 2025 13:44:25 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 3B4C88E000B; Wed, 20 Aug 2025 13:44:25 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 2F19A8E0023; Wed, 20 Aug 2025 13:44:25 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 1EBD78E000B for ; Wed, 20 Aug 2025 13:44:25 -0400 (EDT) Received: from smtpin01.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id B8E7EC05FF for ; Wed, 20 Aug 2025 17:44:24 +0000 (UTC) X-FDA: 83797860048.01.548179F Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf02.hostedemail.com (Postfix) with ESMTP id E29A380005 for ; Wed, 20 Aug 2025 17:44:22 +0000 (UTC) Authentication-Results: imf02.hostedemail.com; dkim=pass header.d=infradead.org header.s=bombadil.20210309 header.b=0bnL8T2y ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1755711863; a=rsa-sha256; cv=none; b=stW0nrfOjUtQIMOj2/5pDy1z+2F3EWacM8WDzTPkFJXE6JZww6Hfp+OZ3SIizgJQP/Ax9l c+vDN0B3KxobJlhkXZ3gk47Xhcio3dH4AAT+cwsTP/BSjIjSQaSOC8N23OkPjWrXaDMgMT CujYFXvpo8KEA0jyxfGtSRTQnbrKS4U= ARC-Authentication-Results: i=1; imf02.hostedemail.com; dkim=pass header.d=infradead.org header.s=bombadil.20210309 header.b=0bnL8T2y; dmarc=none; spf=none (imf02.hostedemail.com: domain of rdunlap@infradead.org has no SPF policy when checking 198.137.202.133) smtp.mailfrom=rdunlap@infradead.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1755711863; h=from:from:sender:reply-to:subject:subject: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:dkim-signature; bh=YxAG2wevlF9hvSfOpG1gi4gKf2kHDvkSjadttXruPpE=; b=6DslC4cIXipL7vO8bTNjejFf9KJidXPVUzlNHVm6UL6I9I8FP37Ew/cWsFASW1uWK1qYQt Ve1Qzp+mE/zmEyI+PJwMNhSytxyz3QT9NHL8h61hsl/7K8bProW1jmUAJK6Y+pDoRh1BiD 32fVYB2V7QHDB2Ywrih1XRKfsCs589M= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Sender:Reply-To:Content-ID:Content-Description; bh=YxAG2wevlF9hvSfOpG1gi4gKf2kHDvkSjadttXruPpE=; b=0bnL8T2ybDOrHa+Py3KB+20XsQ krFSkRJ/lGSHI9KlQ0qlkdhK+qS23YBluLAvVOyoBvbJO/SbTCQXDRBwJo0tZ+Cp1m4DSS1z7XGDT bq75CSkTotCMGqtD4tBJ7i8YIpE632ix5UOtckpT48GQey1yMweypKEPi1eouIUYb+w6RTQ0TeOYI wwoHU5dIl+eMuf1/t1xis+rSnKTjBKynLeo+mDeoVyVPXnDdZUOyF4W1BgoI2zlm/SJELWzpgpvX9 8tvSWxDqv45x4EHLAoK02HGSqLAaZNADQVCvJUVy3JC9HhNc1ybuyAFZufFH2NHAbbXOxL6igBxc6 4N59ti0g==; Received: from [50.53.25.54] (helo=[192.168.254.17]) by bombadil.infradead.org with esmtpsa (Exim 4.98.2 #2 (Red Hat Linux)) id 1uomrD-0000000Eaag-3xcU; Wed, 20 Aug 2025 17:44:20 +0000 Message-ID: Date: Wed, 20 Aug 2025 10:44:18 -0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 3/8] lib: Support ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION To: Jonathan Cameron , Catalin Marinas , james.morse@arm.com, linux-cxl@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, Will Deacon , Dan Williams , Davidlohr Bueso , "H . Peter Anvin" , Peter Zijlstra Cc: Yicong Yang , linuxarm@huawei.com, Yushan Wang , Lorenzo Pieralisi , Mark Rutland , Dave Hansen , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, Andy Lutomirski References: <20250820102950.175065-1-Jonathan.Cameron@huawei.com> <20250820102950.175065-4-Jonathan.Cameron@huawei.com> Content-Language: en-US From: Randy Dunlap In-Reply-To: <20250820102950.175065-4-Jonathan.Cameron@huawei.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: E29A380005 X-Stat-Signature: 365u65jo1noi1e3rk3ynmzhronqzgq3w X-Rspam-User: X-Rspamd-Server: rspam06 X-HE-Tag: 1755711862-187456 X-HE-Meta: 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 7j6yNnNW g55FJzm/vDAw/Bv6LC6skfQGpaHQClFAK7eW903T/+xMnK5GcYEginrR1TGMud0CuNoNILOPyVZV2w7yQCncXVtRD/kiY2ZzvVwgdGYCrMFeR4Gd/XxaGEPC5d8FEULpkQ4Ck0Lq2Gj7zsQcDyJw2PzpaHtqrgpnO+Jq/dL4M07PyUqzj0zF59HpgaECr2isdtUaFe3EbMRNcpbK+Wb03q3Hn15sKCu8u1cYnecWB0DBQJSNoerabEvQyy7gYkpTPTmV/RuVLPiApZ40= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 8/20/25 3:29 AM, Jonathan Cameron wrote: > +struct cache_coherency_device * > +_cache_coherency_device_alloc(const struct coherency_ops *ops, size_t size); > +/** > + * cache_coherency_device_alloc - Allocate a cache coherency device > + * @ops: Cache maintenance operations > + * @drv_struct: structure that contains the struct cache_coherency_device > + * @member: Name of the struct cache_coherency_device member in @drv_struct. > + * > + * This allocates and initializes the cache_coherency_device embedded in the > + * drv_struct. Upon success the pointer must be freed via > + * cache_coherency_device_free(). > + * > + * Returns a 'drv_struct \*' on success, NULL on error. Preferably: * Returns: a &drv_struct * on success, %NULL on error. > + */ > +#define cache_coherency_device_alloc(ops, drv_struct, member) \ > + ({ \ > + static_assert(__same_type(struct cache_coherency_device, \ > + ((drv_struct *)NULL)->member)); \ > + static_assert(offsetof(drv_struct, member) == 0); \ > + (drv_struct *)_cache_coherency_device_alloc(ops, \ > + sizeof(drv_struct)); \ > + }) > +void cache_coherency_device_free(struct cache_coherency_device *ccd); > + > +#endif -- ~Randy