From patchwork Thu Jan 23 11:37:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Igor Mammedov X-Patchwork-Id: 11347459 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 288CB109A for ; Thu, 23 Jan 2020 11:47:57 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id F2FCA2051A for ; Thu, 23 Jan 2020 11:47:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="R4WK94Bw" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F2FCA2051A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:55322 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iuaxn-0004qT-EQ for patchwork-qemu-devel@patchwork.kernel.org; Thu, 23 Jan 2020 06:47:55 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:34798) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iuarL-00051c-MK for qemu-devel@nongnu.org; Thu, 23 Jan 2020 06:41:17 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iuarK-0003rH-Eb for qemu-devel@nongnu.org; Thu, 23 Jan 2020 06:41:15 -0500 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:39690 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iuarK-0003rB-BH for qemu-devel@nongnu.org; Thu, 23 Jan 2020 06:41:14 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1579779674; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=KII+DyHT1mIXFS/kQkCnRcezJtqgb6yrJZzuOp/qnVk=; b=R4WK94BwJ5hHZ1dlKQBsH/jm3lqXlWPc7bspuMIannIy45qNJ8IPqcL8ZCMWDIzRNlWQCl j2isMgeUCcgsaNju7KkkvQlEbK0cqaD35+fWYqiUjSEm8Q6X+wSBgAE/f3vRRIlcU926Pk ahgtrmvwSIAirOdV+VCzM5tX0cRicAc= 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-311-asARf87GPfGVGijXStAgpw-1; Thu, 23 Jan 2020 06:41:12 -0500 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 623191005510 for ; Thu, 23 Jan 2020 11:41:11 +0000 (UTC) Received: from dell-r430-03.lab.eng.brq.redhat.com (dell-r430-03.lab.eng.brq.redhat.com [10.37.153.18]) by smtp.corp.redhat.com (Postfix) with ESMTP id 10AD71001B05; Thu, 23 Jan 2020 11:41:07 +0000 (UTC) From: Igor Mammedov To: qemu-devel@nongnu.org Subject: [PATCH REPOST v3 03/80] machine: alias -mem-path and -mem-prealloc into memory-foo backend Date: Thu, 23 Jan 2020 12:37:28 +0100 Message-Id: <1579779525-20065-4-git-send-email-imammedo@redhat.com> In-Reply-To: <1579779525-20065-1-git-send-email-imammedo@redhat.com> References: <1579779525-20065-1-git-send-email-imammedo@redhat.com> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-MC-Unique: asARf87GPfGVGijXStAgpw-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 207.211.31.120 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: pbonzini@redhat.com, philmd@redhat.com, ehabkost@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Allow machine to opt in for hostmem backend based initial RAM even if user uses old -mem-path/prealloc options by providing MachineClass::default_ram_id Follow up patches will incrementally convert machines to new API, by dropping memory_region_allocate_system_memory() and setting default_ram_id that board used to use before conversion to keep migration stream the same. Signed-off-by: Igor Mammedov --- v3: * rename "ram-memdev" property to "memory-backend" (Paolo Bonzini ) CC: ehabkost@redhat.com CC: pbonzini@redhat.com CC: philmd@redhat.com --- include/hw/boards.h | 5 +++++ include/sysemu/hostmem.h | 16 ++++++++++++++++ backends/hostmem-file.c | 7 ------- backends/hostmem-ram.c | 2 -- vl.c | 25 +++++++++++++++++++++++++ 5 files changed, 46 insertions(+), 9 deletions(-) diff --git a/include/hw/boards.h b/include/hw/boards.h index 6aa01b8..2a4e804 100644 --- a/include/hw/boards.h +++ b/include/hw/boards.h @@ -170,6 +170,10 @@ typedef struct { * false is returned, an error must be set to show the reason of * the rejection. If the hook is not provided, all hotplug will be * allowed. + * @default_ram_id: + * Specifies inital RAM MemoryRegion name to be used for default backend + * creation if user explicitly hasn't specified backend with "memory-backend" + * property. */ struct MachineClass { /*< private >*/ @@ -226,6 +230,7 @@ struct MachineClass { bool nvdimm_supported; bool numa_mem_supported; bool auto_enable_numa; + const char *default_ram_id; HotplugHandler *(*get_hotplug_handler)(MachineState *machine, DeviceState *dev); diff --git a/include/sysemu/hostmem.h b/include/sysemu/hostmem.h index 4dbdadd..5db0d66 100644 --- a/include/sysemu/hostmem.h +++ b/include/sysemu/hostmem.h @@ -27,6 +27,22 @@ #define MEMORY_BACKEND_CLASS(klass) \ OBJECT_CLASS_CHECK(HostMemoryBackendClass, (klass), TYPE_MEMORY_BACKEND) +/* hostmem-ram.c */ +/** + * @TYPE_MEMORY_BACKEND_RAM: + * name of backend that uses mmap on the anonymous RAM + */ + +#define TYPE_MEMORY_BACKEND_RAM "memory-backend-ram" + +/* hostmem-file.c */ +/** + * @TYPE_MEMORY_BACKEND_FILE: + * name of backend that uses mmap on a file descriptor + */ +#define TYPE_MEMORY_BACKEND_FILE "memory-backend-file" + +typedef struct HostMemoryBackend HostMemoryBackend; typedef struct HostMemoryBackendClass HostMemoryBackendClass; /** diff --git a/backends/hostmem-file.c b/backends/hostmem-file.c index be64020..cb319a9 100644 --- a/backends/hostmem-file.c +++ b/backends/hostmem-file.c @@ -18,13 +18,6 @@ #include "sysemu/sysemu.h" #include "qom/object_interfaces.h" -/* hostmem-file.c */ -/** - * @TYPE_MEMORY_BACKEND_FILE: - * name of backend that uses mmap on a file descriptor - */ -#define TYPE_MEMORY_BACKEND_FILE "memory-backend-file" - #define MEMORY_BACKEND_FILE(obj) \ OBJECT_CHECK(HostMemoryBackendFile, (obj), TYPE_MEMORY_BACKEND_FILE) diff --git a/backends/hostmem-ram.c b/backends/hostmem-ram.c index 6aab8d3..5cc53e7 100644 --- a/backends/hostmem-ram.c +++ b/backends/hostmem-ram.c @@ -16,8 +16,6 @@ #include "qemu/module.h" #include "qom/object_interfaces.h" -#define TYPE_MEMORY_BACKEND_RAM "memory-backend-ram" - static void ram_backend_memory_alloc(HostMemoryBackend *backend, Error **errp) { diff --git a/vl.c b/vl.c index 71d3e7e..9f97cb6 100644 --- a/vl.c +++ b/vl.c @@ -75,6 +75,7 @@ int main(int argc, char **argv) #include "ui/input.h" #include "sysemu/sysemu.h" #include "sysemu/numa.h" +#include "sysemu/hostmem.h" #include "exec/gdbstub.h" #include "qemu/timer.h" #include "chardev/char.h" @@ -2822,6 +2823,25 @@ static void configure_accelerators(const char *progname) } } +static void create_default_memdev(MachineState *ms, const char *path, + bool prealloc) +{ + Object *obj; + MachineClass *mc = MACHINE_GET_CLASS(ms); + + obj = object_new(path ? TYPE_MEMORY_BACKEND_FILE : TYPE_MEMORY_BACKEND_RAM); + if (path) { + object_property_set_str(obj, path, "mem-path", &error_fatal); + } + object_property_set_bool(obj, prealloc, "prealloc", &error_fatal); + object_property_set_int(obj, ms->ram_size, "size", &error_fatal); + object_property_add_child(object_get_objects_root(), mc->default_ram_id, + obj, &error_fatal); + user_creatable_complete(USER_CREATABLE(obj), &error_fatal); + object_unref(obj); + object_property_set_link(OBJECT(ms), obj, "memory-backend", &error_fatal); +} + int main(int argc, char **argv, char **envp) { int i; @@ -4285,6 +4305,11 @@ int main(int argc, char **argv, char **envp) } parse_numa_opts(current_machine); + if (!current_machine->ram_memdev && + machine_class->default_ram_size && + machine_class->default_ram_id) { + create_default_memdev(current_machine, mem_path, mem_prealloc); + } /* do monitor/qmp handling at preconfig state if requested */ main_loop();