From patchwork Fri Mar 19 10:12:23 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 1455763 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=KTSgy2qq; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4F20JF0xl6z9sCD for ; Fri, 19 Mar 2021 21:19:56 +1100 (AEDT) Received: from localhost ([::1]:59694 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lNCEU-0007d8-0k for incoming@patchwork.ozlabs.org; Fri, 19 Mar 2021 06:19:54 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:47854) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lNC8l-0001Wu-Vu for qemu-devel@nongnu.org; Fri, 19 Mar 2021 06:14:01 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:22552) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1lNC8i-0000NN-1e for qemu-devel@nongnu.org; Fri, 19 Mar 2021 06:13:59 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1616148834; h=from:from: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; bh=Hsk+BiFzm2szd+Ey2SUEwo0EAMHcqK8DYUIguVJz/Yw=; b=KTSgy2qqclVqXFUubfrdHhFCV4KlnFv1K96MU8FtGjMQD89md0NxtpkXF2/VWAKtAZKpyf gfM4Rb4hrOfaFL4crzgKiazzLuEyQf5wbHF2PqNlVAtXXmTKywUICesTTE8BnjvuDkQ9GF ydcBvutxslYy3lqotyMYlzxdlYssmFA= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-541-_ajOVBdWNEiStmA7zKqagg-1; Fri, 19 Mar 2021 06:13:51 -0400 X-MC-Unique: _ajOVBdWNEiStmA7zKqagg-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 8AE891007474; Fri, 19 Mar 2021 10:13:49 +0000 (UTC) Received: from t480s.redhat.com (ovpn-112-11.ams2.redhat.com [10.36.112.11]) by smtp.corp.redhat.com (Postfix) with ESMTP id 37B6F10013C1; Fri, 19 Mar 2021 10:13:46 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Subject: [PATCH v4 07/14] softmmu/memory: Pass ram_flags to qemu_ram_alloc_from_fd() Date: Fri, 19 Mar 2021 11:12:23 +0100 Message-Id: <20210319101230.21531-8-david@redhat.com> In-Reply-To: <20210319101230.21531-1-david@redhat.com> References: <20210319101230.21531-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=david@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=216.205.24.124; envelope-from=david@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.249, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Marcel Apfelbaum , Murilo Opsfelder Araujo , Igor Kotrasinski , Eduardo Habkost , "Michael S. Tsirkin" , David Hildenbrand , Richard Henderson , "Dr. David Alan Gilbert" , Peter Xu , Greg Kurz , Stefan Hajnoczi , Igor Mammedov , Paolo Bonzini , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Markus Armbruster Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Let's pass in ram flags just like we do with qemu_ram_alloc_from_file(), to clean up and prepare for more flags. Simplify the documentation of passed ram flags: Looking at our documentation of RAM_SHARED and RAM_PMEM is sufficient, no need to be repetitive. Reviewed-by: Peter Xu Signed-off-by: David Hildenbrand --- backends/hostmem-memfd.c | 7 ++++--- hw/misc/ivshmem.c | 5 ++--- include/exec/memory.h | 9 +++------ include/exec/ram_addr.h | 6 +----- softmmu/memory.c | 7 +++---- 5 files changed, 13 insertions(+), 21 deletions(-) diff --git a/backends/hostmem-memfd.c b/backends/hostmem-memfd.c index 69b0ae30bb..93b5d1a4cf 100644 --- a/backends/hostmem-memfd.c +++ b/backends/hostmem-memfd.c @@ -36,6 +36,7 @@ static void memfd_backend_memory_alloc(HostMemoryBackend *backend, Error **errp) { HostMemoryBackendMemfd *m = MEMORY_BACKEND_MEMFD(backend); + uint32_t ram_flags; char *name; int fd; @@ -53,9 +54,9 @@ memfd_backend_memory_alloc(HostMemoryBackend *backend, Error **errp) } name = host_memory_backend_get_name(backend); - memory_region_init_ram_from_fd(&backend->mr, OBJECT(backend), - name, backend->size, - backend->share, fd, 0, errp); + ram_flags = backend->share ? RAM_SHARED : 0; + memory_region_init_ram_from_fd(&backend->mr, OBJECT(backend), name, + backend->size, ram_flags, fd, 0, errp); g_free(name); } diff --git a/hw/misc/ivshmem.c b/hw/misc/ivshmem.c index a1fa4878be..1ba4a98377 100644 --- a/hw/misc/ivshmem.c +++ b/hw/misc/ivshmem.c @@ -493,9 +493,8 @@ static void process_msg_shmem(IVShmemState *s, int fd, Error **errp) size = buf.st_size; /* mmap the region and map into the BAR2 */ - memory_region_init_ram_from_fd(&s->server_bar2, OBJECT(s), - "ivshmem.bar2", size, true, fd, 0, - &local_err); + memory_region_init_ram_from_fd(&s->server_bar2, OBJECT(s), "ivshmem.bar2", + size, RAM_SHARED, fd, 0, &local_err); if (local_err) { error_propagate(errp, local_err); return; diff --git a/include/exec/memory.h b/include/exec/memory.h index 54ccf1a5f0..9ffd8c662c 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -967,10 +967,7 @@ void memory_region_init_resizeable_ram(MemoryRegion *mr, * @size: size of the region. * @align: alignment of the region base address; if 0, the default alignment * (getpagesize()) will be used. - * @ram_flags: Memory region features: - * - RAM_SHARED: memory must be mmaped with the MAP_SHARED flag - * - RAM_PMEM: the memory is persistent memory - * Other bits are ignored now. + * @ram_flags: RamBlock flags. Supported flags: RAM_SHARED, RAM_PMEM. * @path: the path in which to allocate the RAM. * @readonly: true to open @path for reading, false for read/write. * @errp: pointer to Error*, to store an error if it happens. @@ -996,7 +993,7 @@ void memory_region_init_ram_from_file(MemoryRegion *mr, * @owner: the object that tracks the region's reference count * @name: the name of the region. * @size: size of the region. - * @share: %true if memory must be mmaped with the MAP_SHARED flag + * @ram_flags: RamBlock flags. Supported flags: RAM_SHARED, RAM_PMEM. * @fd: the fd to mmap. * @offset: offset within the file referenced by fd * @errp: pointer to Error*, to store an error if it happens. @@ -1008,7 +1005,7 @@ void memory_region_init_ram_from_fd(MemoryRegion *mr, Object *owner, const char *name, uint64_t size, - bool share, + uint32_t ram_flags, int fd, ram_addr_t offset, Error **errp); diff --git a/include/exec/ram_addr.h b/include/exec/ram_addr.h index 3cb9791df3..a7e3378340 100644 --- a/include/exec/ram_addr.h +++ b/include/exec/ram_addr.h @@ -104,11 +104,7 @@ long qemu_maxrampagesize(void); * Parameters: * @size: the size in bytes of the ram block * @mr: the memory region where the ram block is - * @ram_flags: specify the properties of the ram block, which can be one - * or bit-or of following values - * - RAM_SHARED: mmap the backing file or device with MAP_SHARED - * - RAM_PMEM: the backend @mem_path or @fd is persistent memory - * Other bits are ignored. + * @ram_flags: RamBlock flags. Supported flags: RAM_SHARED, RAM_PMEM. * @mem_path or @fd: specify the backing file or device * @readonly: true to open @path for reading, false for read/write. * @errp: pointer to Error*, to store an error if it happens diff --git a/softmmu/memory.c b/softmmu/memory.c index c4730ec47a..9af1abd79b 100644 --- a/softmmu/memory.c +++ b/softmmu/memory.c @@ -1609,7 +1609,7 @@ void memory_region_init_ram_from_fd(MemoryRegion *mr, Object *owner, const char *name, uint64_t size, - bool share, + uint32_t ram_flags, int fd, ram_addr_t offset, Error **errp) @@ -1619,9 +1619,8 @@ void memory_region_init_ram_from_fd(MemoryRegion *mr, mr->ram = true; mr->terminates = true; mr->destructor = memory_region_destructor_ram; - mr->ram_block = qemu_ram_alloc_from_fd(size, mr, - share ? RAM_SHARED : 0, - fd, offset, false, &err); + mr->ram_block = qemu_ram_alloc_from_fd(size, mr, ram_flags, fd, offset, + false, &err); if (err) { mr->size = int128_zero(); object_unparent(OBJECT(mr));