From nobody Sat Feb 7 06:14:41 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=eik.bme.hu Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1770254034488117.02815792000172; Wed, 4 Feb 2026 17:13:54 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vnnw5-0002cJ-9a; Wed, 04 Feb 2026 20:13:33 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vnnw0-0002bE-O1 for qemu-devel@nongnu.org; Wed, 04 Feb 2026 20:13:28 -0500 Received: from zero.eik.bme.hu ([152.66.115.2]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vnnvy-0002ze-1V for qemu-devel@nongnu.org; Wed, 04 Feb 2026 20:13:28 -0500 Received: from localhost (localhost [127.0.0.1]) by zero.eik.bme.hu (Postfix) with ESMTP id 98D5D596ADE; Thu, 05 Feb 2026 02:13:21 +0100 (CET) Received: from zero.eik.bme.hu ([127.0.0.1]) by localhost (zero.eik.bme.hu [127.0.0.1]) (amavis, port 10028) with ESMTP id Jc7AANp5Wurr; Thu, 5 Feb 2026 02:13:19 +0100 (CET) Received: by zero.eik.bme.hu (Postfix, from userid 432) id 50DDC596A41; Thu, 05 Feb 2026 02:13:19 +0100 (CET) X-Virus-Scanned: amavis at eik.bme.hu Message-ID: <776271c85bacff22d7c02f7fa12b890dc66a7f3e.1770253186.git.balaton@eik.bme.hu> In-Reply-To: References: From: BALATON Zoltan Subject: [PATCH v4 1/8] hw/display/{cg3,tcx}: Do not use memory_region_init_rom_nomigrate() MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable To: qemu-devel@nongnu.org Cc: Peter Xu , Akihiko Odaki , Paolo Bonzini , Mark Cave-Ayland , Gerd Hoffmann , Max Filippov , Peter Maydell , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Thu, 05 Feb 2026 02:13:19 +0100 (CET) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=152.66.115.2; envelope-from=balaton@eik.bme.hu; helo=zero.eik.bme.hu X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=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: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1770254040293158500 Content-Type: text/plain; charset="utf-8" We could simply convert these to use memory_region_init_rom but that would be a migration compatibility break so preserve current behaviour for now. Signed-off-by: BALATON Zoltan Reviewed-by: Mark Cave-Ayland --- hw/display/cg3.c | 6 ++++-- hw/display/tcx.c | 6 ++++-- 2 files changed, 8 insertions(+), 4 deletions(-) diff --git a/hw/display/cg3.c b/hw/display/cg3.c index 568d6048a6..44966e7586 100644 --- a/hw/display/cg3.c +++ b/hw/display/cg3.c @@ -282,8 +282,10 @@ static void cg3_initfn(Object *obj) SysBusDevice *sbd =3D SYS_BUS_DEVICE(obj); CG3State *s =3D CG3(obj); =20 - memory_region_init_rom_nomigrate(&s->rom, obj, "cg3.prom", - FCODE_MAX_ROM_SIZE, &error_fatal); + memory_region_init_ram_flags_nomigrate(&s->rom, obj, "cg3.prom", + FCODE_MAX_ROM_SIZE, 0, + &error_fatal); + memory_region_set_readonly(&s->rom, true); sysbus_init_mmio(sbd, &s->rom); =20 memory_region_init_io(&s->reg, obj, &cg3_reg_ops, s, "cg3.reg", diff --git a/hw/display/tcx.c b/hw/display/tcx.c index 36cad82abd..87fe7216ba 100644 --- a/hw/display/tcx.c +++ b/hw/display/tcx.c @@ -756,8 +756,10 @@ static void tcx_initfn(Object *obj) SysBusDevice *sbd =3D SYS_BUS_DEVICE(obj); TCXState *s =3D TCX(obj); =20 - memory_region_init_rom_nomigrate(&s->rom, obj, "tcx.prom", - FCODE_MAX_ROM_SIZE, &error_fatal); + memory_region_init_ram_flags_nomigrate(&s->rom, obj, "tcx.prom", + FCODE_MAX_ROM_SIZE, 0, + &error_fatal); + memory_region_set_readonly(&s->rom, true); sysbus_init_mmio(sbd, &s->rom); =20 /* 2/STIP : Stippler */ --=20 2.41.3 From nobody Sat Feb 7 06:14:41 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=eik.bme.hu Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1770254073390960.0396266606851; Wed, 4 Feb 2026 17:14:33 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vnnw7-0002dx-OL; Wed, 04 Feb 2026 20:13:35 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vnnw3-0002bq-4i for qemu-devel@nongnu.org; Wed, 04 Feb 2026 20:13:31 -0500 Received: from zero.eik.bme.hu ([2001:738:2001:2001::2001]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vnnvy-0002zk-1Y for qemu-devel@nongnu.org; Wed, 04 Feb 2026 20:13:29 -0500 Received: from localhost (localhost [127.0.0.1]) by zero.eik.bme.hu (Postfix) with ESMTP id 72C50596AE1; Thu, 05 Feb 2026 02:13:22 +0100 (CET) Received: from zero.eik.bme.hu ([127.0.0.1]) by localhost (zero.eik.bme.hu [127.0.0.1]) (amavis, port 10028) with ESMTP id VZaph-9X30w5; Thu, 5 Feb 2026 02:13:20 +0100 (CET) Received: by zero.eik.bme.hu (Postfix, from userid 432) id 5DED4596A42; Thu, 05 Feb 2026 02:13:20 +0100 (CET) X-Virus-Scanned: amavis at eik.bme.hu Message-ID: <088d103e1e6999616b6fec0b175f4699bcffa26a.1770253186.git.balaton@eik.bme.hu> In-Reply-To: References: From: BALATON Zoltan Subject: [PATCH v4 2/8] memory: Remove memory_region_init_rom_nomigrate() MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable To: qemu-devel@nongnu.org Cc: Peter Xu , Akihiko Odaki , Paolo Bonzini , Mark Cave-Ayland , Gerd Hoffmann , Max Filippov , Peter Maydell , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Thu, 05 Feb 2026 02:13:20 +0100 (CET) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2001:738:2001:2001::2001; envelope-from=balaton@eik.bme.hu; helo=zero.eik.bme.hu X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, 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: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1770254074929158500 Content-Type: text/plain; charset="utf-8" All users were converted so no longer needed. Signed-off-by: BALATON Zoltan --- docs/devel/memory.rst | 1 - include/system/memory.h | 26 ----------------- .../memory-region-housekeeping.cocci | 28 ------------------- system/memory.c | 19 ++----------- 4 files changed, 3 insertions(+), 71 deletions(-) diff --git a/docs/devel/memory.rst b/docs/devel/memory.rst index 8558f70a42..0bb5acab21 100644 --- a/docs/devel/memory.rst +++ b/docs/devel/memory.rst @@ -113,7 +113,6 @@ have a special case where you need to manage the migrat= ion of the backing memory yourself, you can call the functions: =20 - memory_region_init_ram_nomigrate() -- memory_region_init_rom_nomigrate() =20 which only initialize the MemoryRegion and leave handling migration to the caller. diff --git a/include/system/memory.h b/include/system/memory.h index 0562af3136..7117699b10 100644 --- a/include/system/memory.h +++ b/include/system/memory.h @@ -1588,32 +1588,6 @@ void memory_region_init_alias(MemoryRegion *mr, hwaddr offset, uint64_t size); =20 -/** - * memory_region_init_rom_nomigrate: Initialize a ROM memory region. - * - * This has the same effect as calling memory_region_init_ram_nomigrate() - * and then marking the resulting region read-only with - * memory_region_set_readonly(). - * - * Note that this function does not do anything to cause the data in the - * RAM side of the memory region to be migrated; that is the responsibility - * of the caller. - * - * @mr: the #MemoryRegion to be initialized. - * @owner: the object that tracks the region's reference count - * @name: Region name, becomes part of RAMBlock name used in migration str= eam - * must be unique within any device - * @size: size of the region. - * @errp: pointer to Error*, to store an error if it happens. - * - * Return: true on success, else false setting @errp with error. - */ -bool memory_region_init_rom_nomigrate(MemoryRegion *mr, - Object *owner, - const char *name, - uint64_t size, - Error **errp); - /** * memory_region_init_iommu: Initialize a memory region of a custom type * that translates addresses diff --git a/scripts/coccinelle/memory-region-housekeeping.cocci b/scripts/= coccinelle/memory-region-housekeeping.cocci index 7f89e9712e..e45703141a 100644 --- a/scripts/coccinelle/memory-region-housekeeping.cocci +++ b/scripts/coccinelle/memory-region-housekeeping.cocci @@ -16,17 +16,10 @@ expression E1, E2, E3, E4, E5; symbol true; @@ -( - memory_region_init_ram(E1, E2, E3, E4, E5); + memory_region_init_rom(E1, E2, E3, E4, E5); ... WHEN !=3D E1 - memory_region_set_readonly(E1, true); -| -- memory_region_init_ram_nomigrate(E1, E2, E3, E4, E5); -+ memory_region_init_rom_nomigrate(E1, E2, E3, E4, E5); - ... WHEN !=3D E1 -- memory_region_set_readonly(E1, true); -) =20 =20 @possible_memory_region_init_rom@ @@ -53,11 +46,7 @@ cocci.print_main("potential use of memory_region_init_ro= m*() in ", p) expression ROM, E1, E2, E3, E4; expression ALIAS, E5, E6, E7, E8; @@ -( memory_region_init_rom(ROM, E1, E2, E3, E4); -| - memory_region_init_rom_nomigrate(ROM, E1, E2, E3, E4); -) ... memory_region_init_alias(ALIAS, E5, E6, ROM, E7, E8); - memory_region_set_readonly(ALIAS, true); @@ -80,23 +69,6 @@ expression ERRP; ... -vmstate_register_ram_global(MR); @@ -expression MR; -expression NAME; -expression SIZE; -expression ERRP; -@@ --memory_region_init_rom_nomigrate(MR, NULL, NAME, SIZE, ERRP); -+memory_region_init_rom(MR, NULL, NAME, SIZE, ERRP); - ... --vmstate_register_ram_global(MR); -@@ -expression MR; -expression OPS; -expression OPAQUE; -expression NAME; -expression SIZE; -expression ERRP; -@@ typedef DeviceState; identifier device_fn, dev, obj; expression E1, E2, E3, E4, E5; diff --git a/system/memory.c b/system/memory.c index c51d0798a8..65042bd9fa 100644 --- a/system/memory.c +++ b/system/memory.c @@ -1738,21 +1738,6 @@ void memory_region_init_alias(MemoryRegion *mr, mr->alias_offset =3D offset; } =20 -bool memory_region_init_rom_nomigrate(MemoryRegion *mr, - Object *owner, - const char *name, - uint64_t size, - Error **errp) -{ - if (!memory_region_init_ram_flags_nomigrate(mr, owner, name, - size, 0, errp)) { - return false; - } - mr->readonly =3D true; - - return true; -} - void memory_region_init_iommu(void *_iommu_mr, size_t instance_size, const char *mrtypename, @@ -3757,9 +3742,11 @@ bool memory_region_init_rom(MemoryRegion *mr, { DeviceState *owner_dev; =20 - if (!memory_region_init_rom_nomigrate(mr, owner, name, size, errp)) { + if (!memory_region_init_ram_flags_nomigrate(mr, owner, name, + size, 0, errp)) { return false; } + mr->readonly =3D true; /* This will assert if owner is neither NULL nor a DeviceState. * We only want the owner here for the purposes of defining a * unique name for migration. TODO: Ideally we should implement --=20 2.41.3 From nobody Sat Feb 7 06:14:41 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=eik.bme.hu Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1770254062680585.9164788830825; Wed, 4 Feb 2026 17:14:22 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vnnw5-0002d9-TK; Wed, 04 Feb 2026 20:13:33 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vnnw3-0002br-4k for qemu-devel@nongnu.org; Wed, 04 Feb 2026 20:13:31 -0500 Received: from zero.eik.bme.hu ([152.66.115.2]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vnnvy-0002zn-1V for qemu-devel@nongnu.org; Wed, 04 Feb 2026 20:13:29 -0500 Received: from localhost (localhost [127.0.0.1]) by zero.eik.bme.hu (Postfix) with ESMTP id 6DA29596E98; Thu, 05 Feb 2026 02:13:23 +0100 (CET) Received: from zero.eik.bme.hu ([127.0.0.1]) by localhost (zero.eik.bme.hu [127.0.0.1]) (amavis, port 10028) with ESMTP id CY6VZU7uCEcA; Thu, 5 Feb 2026 02:13:21 +0100 (CET) Received: by zero.eik.bme.hu (Postfix, from userid 432) id 6A351596ABF; Thu, 05 Feb 2026 02:13:21 +0100 (CET) X-Virus-Scanned: amavis at eik.bme.hu Message-ID: In-Reply-To: References: From: BALATON Zoltan Subject: [PATCH v4 3/8] sun4m,sun4u,tcx: Do not use memory_region_init_ram_nomigrate() MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable To: qemu-devel@nongnu.org Cc: Peter Xu , Akihiko Odaki , Paolo Bonzini , Mark Cave-Ayland , Gerd Hoffmann , Max Filippov , Peter Maydell , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Thu, 05 Feb 2026 02:13:21 +0100 (CET) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=152.66.115.2; envelope-from=balaton@eik.bme.hu; helo=zero.eik.bme.hu X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=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: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1770254065030158500 Content-Type: text/plain; charset="utf-8" We could simply convert these to use memory_region_init_ram but that would be a migration compatibility break so preserve current behaviour for now and use memory_region_init_ram_flags_nomigrate instead. Signed-off-by: BALATON Zoltan --- hw/display/tcx.c | 5 +++-- hw/sparc/sun4m.c | 15 +++++++++------ hw/sparc64/sun4u.c | 9 +++++---- 3 files changed, 17 insertions(+), 12 deletions(-) diff --git a/hw/display/tcx.c b/hw/display/tcx.c index 87fe7216ba..d6be297828 100644 --- a/hw/display/tcx.c +++ b/hw/display/tcx.c @@ -817,8 +817,9 @@ static void tcx_realizefn(DeviceState *dev, Error **err= p) uint8_t *vram_base; char *fcode_filename; =20 - memory_region_init_ram_nomigrate(&s->vram_mem, OBJECT(s), "tcx.vram", - s->vram_size * (1 + 4 + 4), &error_fatal); + memory_region_init_ram_flags_nomigrate(&s->vram_mem, OBJECT(s), "tcx.v= ram", + s->vram_size * (1 + 4 + 4), 0, + &error_fatal); vmstate_register_ram_global(&s->vram_mem); memory_region_set_log(&s->vram_mem, true, DIRTY_MEMORY_VGA); vram_base =3D memory_region_get_ram_ptr(&s->vram_mem); diff --git a/hw/sparc/sun4m.c b/hw/sparc/sun4m.c index 0c0d658d30..66a21ae86c 100644 --- a/hw/sparc/sun4m.c +++ b/hw/sparc/sun4m.c @@ -587,8 +587,10 @@ static void idreg_realize(DeviceState *ds, Error **err= p) IDRegState *s =3D MACIO_ID_REGISTER(ds); SysBusDevice *dev =3D SYS_BUS_DEVICE(ds); =20 - if (!memory_region_init_ram_nomigrate(&s->mem, OBJECT(ds), "sun4m.idre= g", - sizeof(idreg_data), errp)) { + if (!memory_region_init_ram_flags_nomigrate(&s->mem, OBJECT(ds), + "sun4m.idreg", + sizeof(idreg_data), + 0, errp)) { return; } =20 @@ -638,8 +640,8 @@ static void afx_realize(DeviceState *ds, Error **errp) AFXState *s =3D TCX_AFX(ds); SysBusDevice *dev =3D SYS_BUS_DEVICE(ds); =20 - if (!memory_region_init_ram_nomigrate(&s->mem, OBJECT(ds), "sun4m.afx", - 4, errp)) { + if (!memory_region_init_ram_flags_nomigrate(&s->mem, OBJECT(ds), + "sun4m.afx", 4, 0, errp)) { return; } =20 @@ -719,8 +721,9 @@ static void prom_realize(DeviceState *ds, Error **errp) PROMState *s =3D OPENPROM(ds); SysBusDevice *dev =3D SYS_BUS_DEVICE(ds); =20 - if (!memory_region_init_ram_nomigrate(&s->prom, OBJECT(ds), "sun4m.pro= m", - PROM_SIZE_MAX, errp)) { + if (!memory_region_init_ram_flags_nomigrate(&s->prom, OBJECT(ds), + "sun4m.prom", PROM_SIZE_MA= X, 0, + errp)) { return; } =20 diff --git a/hw/sparc64/sun4u.c b/hw/sparc64/sun4u.c index 5d7787fc1a..0da0eef74c 100644 --- a/hw/sparc64/sun4u.c +++ b/hw/sparc64/sun4u.c @@ -455,8 +455,9 @@ static void prom_realize(DeviceState *ds, Error **errp) PROMState *s =3D OPENPROM(ds); SysBusDevice *dev =3D SYS_BUS_DEVICE(ds); =20 - if (!memory_region_init_ram_nomigrate(&s->prom, OBJECT(ds), "sun4u.pro= m", - PROM_SIZE_MAX, errp)) { + if (!memory_region_init_ram_flags_nomigrate(&s->prom, OBJECT(ds), + "sun4u.prom", PROM_SIZE_MA= X, 0, + errp)) { return; } =20 @@ -498,8 +499,8 @@ static void ram_realize(DeviceState *dev, Error **errp) RamDevice *d =3D SUN4U_RAM(dev); SysBusDevice *sbd =3D SYS_BUS_DEVICE(dev); =20 - memory_region_init_ram_nomigrate(&d->ram, OBJECT(d), "sun4u.ram", d->s= ize, - &error_fatal); + memory_region_init_ram_flags_nomigrate(&d->ram, OBJECT(d), "sun4u.ram", + d->size, 0, &error_fatal); vmstate_register_ram_global(&d->ram); sysbus_init_mmio(sbd, &d->ram); } --=20 2.41.3 From nobody Sat Feb 7 06:14:41 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=eik.bme.hu Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1770254023699184.60185277147446; Wed, 4 Feb 2026 17:13:43 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vnnw5-0002d7-RT; Wed, 04 Feb 2026 20:13:33 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vnnw3-0002bs-5L for qemu-devel@nongnu.org; Wed, 04 Feb 2026 20:13:31 -0500 Received: from zero.eik.bme.hu ([2001:738:2001:2001::2001]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vnnvy-000303-1Y for qemu-devel@nongnu.org; Wed, 04 Feb 2026 20:13:29 -0500 Received: from localhost (localhost [127.0.0.1]) by zero.eik.bme.hu (Postfix) with ESMTP id 72C4C596EA1; Thu, 05 Feb 2026 02:13:24 +0100 (CET) Received: from zero.eik.bme.hu ([127.0.0.1]) by localhost (zero.eik.bme.hu [127.0.0.1]) (amavis, port 10028) with ESMTP id Ot4PTj9ryf0W; Thu, 5 Feb 2026 02:13:22 +0100 (CET) Received: by zero.eik.bme.hu (Postfix, from userid 432) id 756AA596E8E; Thu, 05 Feb 2026 02:13:22 +0100 (CET) X-Virus-Scanned: amavis at eik.bme.hu Message-ID: <6529db430b0d928813d54e976b81c61e06bfc530.1770253186.git.balaton@eik.bme.hu> In-Reply-To: References: From: BALATON Zoltan Subject: [PATCH v4 4/8] memory: Remove memory_region_init_ram_nomigrate() MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable To: qemu-devel@nongnu.org Cc: Peter Xu , Akihiko Odaki , Paolo Bonzini , Mark Cave-Ayland , Gerd Hoffmann , Max Filippov , Peter Maydell , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Thu, 05 Feb 2026 02:13:22 +0100 (CET) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2001:738:2001:2001::2001; envelope-from=balaton@eik.bme.hu; helo=zero.eik.bme.hu X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, 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: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1770254030271154100 Content-Type: text/plain; charset="utf-8" This is rarely needed and we can use memory_region_init_ram_flags_nomigrate() instead which is now the only nomigrate variant left. Signed-off-by: BALATON Zoltan --- docs/devel/memory.rst | 8 +++---- hw/display/vga.c | 4 ++-- hw/xtensa/xtfpga.c | 4 ++-- include/system/memory.h | 23 ------------------- .../memory-region-housekeeping.cocci | 19 --------------- system/memory.c | 13 ++--------- 6 files changed, 9 insertions(+), 62 deletions(-) diff --git a/docs/devel/memory.rst b/docs/devel/memory.rst index 0bb5acab21..9083b18f08 100644 --- a/docs/devel/memory.rst +++ b/docs/devel/memory.rst @@ -110,11 +110,9 @@ migrated: =20 For most devices and boards this is the correct thing. If you have a special case where you need to manage the migration of -the backing memory yourself, you can call the functions: - -- memory_region_init_ram_nomigrate() - -which only initialize the MemoryRegion and leave handling +the backing memory yourself, you can call the function +memory_region_init_ram_flags_nomigrate() +which only initializes the MemoryRegion and leaves handling migration to the caller. =20 The functions: diff --git a/hw/display/vga.c b/hw/display/vga.c index 59a65cbbff..ee7d97b5c2 100644 --- a/hw/display/vga.c +++ b/hw/display/vga.c @@ -2235,8 +2235,8 @@ bool vga_common_init(VGACommonState *s, Object *obj, = Error **errp) return false; } =20 - memory_region_init_ram_nomigrate(&s->vram, obj, "vga.vram", s->vram_si= ze, - &local_err); + memory_region_init_ram_flags_nomigrate(&s->vram, obj, "vga.vram", + s->vram_size, 0, &local_err); if (local_err) { error_propagate(errp, local_err); return false; diff --git a/hw/xtensa/xtfpga.c b/hw/xtensa/xtfpga.c index d427d68e50..b025cc53a8 100644 --- a/hw/xtensa/xtfpga.c +++ b/hw/xtensa/xtfpga.c @@ -163,8 +163,8 @@ static void xtfpga_net_init(MemoryRegion *address_space, sysbus_mmio_get_region(s, 1)); =20 ram =3D g_malloc(sizeof(*ram)); - memory_region_init_ram_nomigrate(ram, OBJECT(s), "open_eth.ram", 16 * = KiB, - &error_fatal); + memory_region_init_ram_flags_nomigrate(ram, OBJECT(s), "open_eth.ram", + 16 * KiB, 0, &error_fatal); vmstate_register_ram_global(ram); memory_region_add_subregion(address_space, buffers, ram); } diff --git a/include/system/memory.h b/include/system/memory.h index 7117699b10..d4793a08a7 100644 --- a/include/system/memory.h +++ b/include/system/memory.h @@ -1374,29 +1374,6 @@ void memory_region_init_io(MemoryRegion *mr, const char *name, uint64_t size); =20 -/** - * memory_region_init_ram_nomigrate: Initialize RAM memory region. Acces= ses - * into the region will modify memory - * directly. - * - * @mr: the #MemoryRegion to be initialized. - * @owner: the object that tracks the region's reference count - * @name: Region name, becomes part of RAMBlock name used in migration str= eam - * must be unique within any device - * @size: size of the region. - * @errp: pointer to Error*, to store an error if it happens. - * - * Note that this function does not do anything to cause the data in the - * RAM memory region to be migrated; that is the responsibility of the cal= ler. - * - * Return: true on success, else false setting @errp with error. - */ -bool memory_region_init_ram_nomigrate(MemoryRegion *mr, - Object *owner, - const char *name, - uint64_t size, - Error **errp); - /** * memory_region_init_ram_flags_nomigrate: Initialize RAM memory region. * Accesses into the region will diff --git a/scripts/coccinelle/memory-region-housekeeping.cocci b/scripts/= coccinelle/memory-region-housekeeping.cocci index e45703141a..b23647a3d8 100644 --- a/scripts/coccinelle/memory-region-housekeeping.cocci +++ b/scripts/coccinelle/memory-region-housekeeping.cocci @@ -26,15 +26,9 @@ symbol true; expression E1, E2, E3, E4, E5; position p; @@ -( memory_region_init_ram@p(E1, E2, E3, E4, E5); ... memory_region_set_readonly(E1, true); -| - memory_region_init_ram_nomigrate@p(E1, E2, E3, E4, E5); - ... - memory_region_set_readonly(E1, true); -) @script:python@ p << possible_memory_region_init_rom.p; @@ @@ -52,23 +46,10 @@ expression ALIAS, E5, E6, E7, E8; - memory_region_set_readonly(ALIAS, true); =20 =20 -// Replace by-hand memory_region_init_ram_nomigrate/vmstate_register_ram -// code sequences with use of the new memory_region_init_ram function. -// Similarly for the _rom and _rom_device functions. // We don't try to replace sequences with a non-NULL owner, because // there are none in the tree that can be automatically converted // (and only a handful that can be manually converted). @@ -expression MR; -expression NAME; -expression SIZE; -expression ERRP; -@@ --memory_region_init_ram_nomigrate(MR, NULL, NAME, SIZE, ERRP); -+memory_region_init_ram(MR, NULL, NAME, SIZE, ERRP); - ... --vmstate_register_ram_global(MR); -@@ typedef DeviceState; identifier device_fn, dev, obj; expression E1, E2, E3, E4, E5; diff --git a/system/memory.c b/system/memory.c index 65042bd9fa..e15f931a8a 100644 --- a/system/memory.c +++ b/system/memory.c @@ -1579,16 +1579,6 @@ void memory_region_init_io(MemoryRegion *mr, memory_region_set_ops(mr, ops, opaque); } =20 -bool memory_region_init_ram_nomigrate(MemoryRegion *mr, - Object *owner, - const char *name, - uint64_t size, - Error **errp) -{ - return memory_region_init_ram_flags_nomigrate(mr, owner, name, - size, 0, errp); -} - bool memory_region_init_ram_flags_nomigrate(MemoryRegion *mr, Object *owner, const char *name, @@ -3695,7 +3685,8 @@ bool memory_region_init_ram(MemoryRegion *mr, { DeviceState *owner_dev; =20 - if (!memory_region_init_ram_nomigrate(mr, owner, name, size, errp)) { + if (!memory_region_init_ram_flags_nomigrate(mr, owner, name, + size, 0, errp)) { return false; } /* This will assert if owner is neither NULL nor a DeviceState. --=20 2.41.3 From nobody Sat Feb 7 06:14:41 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=eik.bme.hu Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1770254069497193.1328996626263; Wed, 4 Feb 2026 17:14:29 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vnnw8-0002eU-6v; Wed, 04 Feb 2026 20:13:36 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vnnw5-0002d8-Ra for qemu-devel@nongnu.org; Wed, 04 Feb 2026 20:13:33 -0500 Received: from zero.eik.bme.hu ([2001:738:2001:2001::2001]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vnnw2-00030d-Uo for qemu-devel@nongnu.org; Wed, 04 Feb 2026 20:13:33 -0500 Received: from localhost (localhost [127.0.0.1]) by zero.eik.bme.hu (Postfix) with ESMTP id 78EC7596E9B; Thu, 05 Feb 2026 02:13:25 +0100 (CET) Received: from zero.eik.bme.hu ([127.0.0.1]) by localhost (zero.eik.bme.hu [127.0.0.1]) (amavis, port 10028) with ESMTP id V1n7MxM4V1XP; Thu, 5 Feb 2026 02:13:23 +0100 (CET) Received: by zero.eik.bme.hu (Postfix, from userid 432) id 7ECED596E9E; Thu, 05 Feb 2026 02:13:23 +0100 (CET) X-Virus-Scanned: amavis at eik.bme.hu Message-ID: <33df3bdbd97db2ba8fae1bf2cabbb257bd08a8eb.1770253186.git.balaton@eik.bme.hu> In-Reply-To: References: From: BALATON Zoltan Subject: [PATCH v4 5/8] memory: Factor out common ram region initialization MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable To: qemu-devel@nongnu.org Cc: Peter Xu , Akihiko Odaki , Paolo Bonzini , Mark Cave-Ayland , Gerd Hoffmann , Max Filippov , Peter Maydell , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Thu, 05 Feb 2026 02:13:23 +0100 (CET) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2001:738:2001:2001::2001; envelope-from=balaton@eik.bme.hu; helo=zero.eik.bme.hu X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, 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: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1770254073557158500 Content-Type: text/plain; charset="utf-8" Introduce internal helper functions to remove duplicated code from different memory_region_init_*ram functions. Signed-off-by: BALATON Zoltan --- system/memory.c | 132 ++++++++++++++++++------------------------------ 1 file changed, 50 insertions(+), 82 deletions(-) diff --git a/system/memory.c b/system/memory.c index e15f931a8a..e1f073e1be 100644 --- a/system/memory.c +++ b/system/memory.c @@ -1579,19 +1579,16 @@ void memory_region_init_io(MemoryRegion *mr, memory_region_set_ops(mr, ops, opaque); } =20 -bool memory_region_init_ram_flags_nomigrate(MemoryRegion *mr, - Object *owner, - const char *name, - uint64_t size, - uint32_t ram_flags, - Error **errp) +static void memory_region_setup_ram(MemoryRegion *mr) { - Error *err =3D NULL; - memory_region_init(mr, owner, name, size); mr->ram =3D true; mr->terminates =3D true; mr->destructor =3D memory_region_destructor_ram; - mr->ram_block =3D qemu_ram_alloc(size, ram_flags, mr, &err); +} + +static bool memory_region_error_propagate(MemoryRegion *mr, + Error *err, Error **errp) +{ if (err) { mr->size =3D int128_zero(); object_unparent(OBJECT(mr)); @@ -1601,6 +1598,18 @@ bool memory_region_init_ram_flags_nomigrate(MemoryRe= gion *mr, return true; } =20 +bool memory_region_init_ram_flags_nomigrate(MemoryRegion *mr, Object *owne= r, + const char *name, uint64_t siz= e, + uint32_t ram_flags, Error **er= rp) +{ + Error *err =3D NULL; + + memory_region_init(mr, owner, name, size); + memory_region_setup_ram(mr); + mr->ram_block =3D qemu_ram_alloc(size, ram_flags, mr, &err); + return memory_region_error_propagate(mr, err, errp); +} + bool memory_region_init_resizeable_ram(MemoryRegion *mr, Object *owner, const char *name, @@ -1612,108 +1621,69 @@ bool memory_region_init_resizeable_ram(MemoryRegio= n *mr, Error **errp) { Error *err =3D NULL; + memory_region_init(mr, owner, name, size); - mr->ram =3D true; - mr->terminates =3D true; - mr->destructor =3D memory_region_destructor_ram; - mr->ram_block =3D qemu_ram_alloc_resizeable(size, max_size, resized, - mr, &err); - if (err) { - mr->size =3D int128_zero(); - object_unparent(OBJECT(mr)); - error_propagate(errp, err); - return false; - } - return true; + memory_region_setup_ram(mr); + mr->ram_block =3D qemu_ram_alloc_resizeable(size, max_size, resized, m= r, + &err); + return memory_region_error_propagate(mr, err, errp); } =20 #if defined(CONFIG_POSIX) && !defined(EMSCRIPTEN) -bool memory_region_init_ram_from_file(MemoryRegion *mr, - Object *owner, - const char *name, - uint64_t size, - uint64_t align, - uint32_t ram_flags, - const char *path, - ram_addr_t offset, +bool memory_region_init_ram_from_file(MemoryRegion *mr, Object *owner, + const char *name, uint64_t size, + uint64_t align, uint32_t ram_flags, + const char *path, ram_addr_t offset, Error **errp) { Error *err =3D NULL; + memory_region_init(mr, owner, name, size); - mr->ram =3D true; + memory_region_setup_ram(mr); mr->readonly =3D !!(ram_flags & RAM_READONLY); - mr->terminates =3D true; - mr->destructor =3D memory_region_destructor_ram; mr->align =3D align; - mr->ram_block =3D qemu_ram_alloc_from_file(size, mr, ram_flags, path, - offset, &err); - if (err) { - mr->size =3D int128_zero(); - object_unparent(OBJECT(mr)); - error_propagate(errp, err); - return false; - } - return true; + mr->ram_block =3D qemu_ram_alloc_from_file(size, mr, ram_flags, path, = offset, + &err); + return memory_region_error_propagate(mr, err, errp); } =20 -bool memory_region_init_ram_from_fd(MemoryRegion *mr, - Object *owner, - const char *name, - uint64_t size, - uint32_t ram_flags, - int fd, - ram_addr_t offset, - Error **errp) +bool memory_region_init_ram_from_fd(MemoryRegion *mr, Object *owner, + const char *name, uint64_t size, + uint32_t ram_flags, int fd, + ram_addr_t offset, Error **errp) { Error *err =3D NULL; + memory_region_init(mr, owner, name, size); - mr->ram =3D true; + memory_region_setup_ram(mr); mr->readonly =3D !!(ram_flags & RAM_READONLY); - mr->terminates =3D true; - mr->destructor =3D memory_region_destructor_ram; mr->ram_block =3D qemu_ram_alloc_from_fd(size, size, NULL, mr, ram_fla= gs, fd, offset, false, &err); - if (err) { - mr->size =3D int128_zero(); - object_unparent(OBJECT(mr)); - error_propagate(errp, err); - return false; - } - return true; + return memory_region_error_propagate(mr, err, errp); } #endif =20 -void memory_region_init_ram_ptr(MemoryRegion *mr, - Object *owner, - const char *name, - uint64_t size, - void *ptr) +void memory_region_init_ram_ptr(MemoryRegion *mr, Object *owner, + const char *name, uint64_t size, void *ptr) { memory_region_init(mr, owner, name, size); - mr->ram =3D true; - mr->terminates =3D true; - mr->destructor =3D memory_region_destructor_ram; - + memory_region_setup_ram(mr); /* qemu_ram_alloc_from_ptr cannot fail with ptr !=3D NULL. */ assert(ptr !=3D NULL); mr->ram_block =3D qemu_ram_alloc_from_ptr(size, ptr, mr, &error_abort); } =20 -void memory_region_init_ram_device_ptr(MemoryRegion *mr, - Object *owner, - const char *name, - uint64_t size, +void memory_region_init_ram_device_ptr(MemoryRegion *mr, Object *owner, + const char *name, uint64_t size, void *ptr) { memory_region_init(mr, owner, name, size); - mr->ram =3D true; - mr->ram_device =3D true; memory_region_set_ops(mr, &ram_device_mem_ops, mr); - mr->destructor =3D memory_region_destructor_ram; - + memory_region_setup_ram(mr); /* qemu_ram_alloc_from_ptr cannot fail with ptr !=3D NULL. */ assert(ptr !=3D NULL); mr->ram_block =3D qemu_ram_alloc_from_ptr(size, ptr, mr, &error_abort); + mr->ram_device =3D true; } =20 void memory_region_init_alias(MemoryRegion *mr, @@ -3764,15 +3734,13 @@ bool memory_region_init_rom_device(MemoryRegion *mr, assert(ops); memory_region_init(mr, owner, name, size); memory_region_set_ops(mr, ops, opaque); - mr->rom_device =3D true; - mr->destructor =3D memory_region_destructor_ram; + memory_region_setup_ram(mr); mr->ram_block =3D qemu_ram_alloc(size, 0, mr, &err); - if (err) { - mr->size =3D int128_zero(); - object_unparent(OBJECT(mr)); - error_propagate(errp, err); + if (!memory_region_error_propagate(mr, err, errp)) { return false; } + mr->ram =3D false; + mr->rom_device =3D true; /* This will assert if owner is neither NULL nor a DeviceState. * We only want the owner here for the purposes of defining a * unique name for migration. TODO: Ideally we should implement --=20 2.41.3 From nobody Sat Feb 7 06:14:41 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=eik.bme.hu Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1770254056862589.219462900808; Wed, 4 Feb 2026 17:14:16 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vnnw8-0002eg-N1; Wed, 04 Feb 2026 20:13:36 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vnnw5-0002cs-Hp for qemu-devel@nongnu.org; Wed, 04 Feb 2026 20:13:33 -0500 Received: from zero.eik.bme.hu ([2001:738:2001:2001::2001]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vnnw2-00030e-U7 for qemu-devel@nongnu.org; Wed, 04 Feb 2026 20:13:33 -0500 Received: from localhost (localhost [127.0.0.1]) by zero.eik.bme.hu (Postfix) with ESMTP id 8351A596E8D; Thu, 05 Feb 2026 02:13:26 +0100 (CET) Received: from zero.eik.bme.hu ([127.0.0.1]) by localhost (zero.eik.bme.hu [127.0.0.1]) (amavis, port 10028) with ESMTP id LmrbVQkVwZcc; Thu, 5 Feb 2026 02:13:24 +0100 (CET) Received: by zero.eik.bme.hu (Postfix, from userid 432) id 87861596E8E; Thu, 05 Feb 2026 02:13:24 +0100 (CET) X-Virus-Scanned: amavis at eik.bme.hu Message-ID: In-Reply-To: References: From: BALATON Zoltan Subject: [PATCH v4 6/8] memory: Add internal memory_region_register_ram function MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable To: qemu-devel@nongnu.org Cc: Peter Xu , Akihiko Odaki , Paolo Bonzini , Mark Cave-Ayland , Gerd Hoffmann , Max Filippov , Peter Maydell , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Thu, 05 Feb 2026 02:13:24 +0100 (CET) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2001:738:2001:2001::2001; envelope-from=balaton@eik.bme.hu; helo=zero.eik.bme.hu X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, 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: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1770254061749154100 Factor out common operation from memory_region_init_{ram,rom} functions to register the region for migration. This avoids duplicating the long comment in several functions. Signed-off-by: BALATON Zoltan Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- system/memory.c | 76 ++++++++++++++----------------------------------- 1 file changed, 21 insertions(+), 55 deletions(-) diff --git a/system/memory.c b/system/memory.c index e1f073e1be..198d1d0b92 100644 --- a/system/memory.c +++ b/system/memory.c @@ -3647,18 +3647,10 @@ void mtree_info(bool flatview, bool dispatch_tree, = bool owner, bool disabled) } } =20 -bool memory_region_init_ram(MemoryRegion *mr, - Object *owner, - const char *name, - uint64_t size, - Error **errp) +static void memory_region_register_ram(MemoryRegion *mr, Object *owner) { DeviceState *owner_dev; =20 - if (!memory_region_init_ram_flags_nomigrate(mr, owner, name, - size, 0, errp)) { - return false; - } /* This will assert if owner is neither NULL nor a DeviceState. * We only want the owner here for the purposes of defining a * unique name for migration. TODO: Ideally we should implement @@ -3667,68 +3659,50 @@ bool memory_region_init_ram(MemoryRegion *mr, */ owner_dev =3D DEVICE(owner); vmstate_register_ram(mr, owner_dev); +} =20 +bool memory_region_init_ram(MemoryRegion *mr, Object *owner, + const char *name, uint64_t size, + Error **errp) +{ + if (!memory_region_init_ram_flags_nomigrate(mr, owner, name, size, + 0, errp)) { + return false; + } + memory_region_register_ram(mr, owner); return true; } =20 -bool memory_region_init_ram_guest_memfd(MemoryRegion *mr, - Object *owner, - const char *name, - uint64_t size, +bool memory_region_init_ram_guest_memfd(MemoryRegion *mr, Object *owner, + const char *name, uint64_t size, Error **errp) { - DeviceState *owner_dev; - if (!memory_region_init_ram_flags_nomigrate(mr, owner, name, size, RAM_GUEST_MEMFD, errp)) { return false; } - /* This will assert if owner is neither NULL nor a DeviceState. - * We only want the owner here for the purposes of defining a - * unique name for migration. TODO: Ideally we should implement - * a naming scheme for Objects which are not DeviceStates, in - * which case we can relax this restriction. - */ - owner_dev =3D DEVICE(owner); - vmstate_register_ram(mr, owner_dev); - + memory_region_register_ram(mr, owner); return true; } =20 -bool memory_region_init_rom(MemoryRegion *mr, - Object *owner, - const char *name, - uint64_t size, +bool memory_region_init_rom(MemoryRegion *mr, Object *owner, + const char *name, uint64_t size, Error **errp) { - DeviceState *owner_dev; - if (!memory_region_init_ram_flags_nomigrate(mr, owner, name, size, 0, errp)) { return false; } mr->readonly =3D true; - /* This will assert if owner is neither NULL nor a DeviceState. - * We only want the owner here for the purposes of defining a - * unique name for migration. TODO: Ideally we should implement - * a naming scheme for Objects which are not DeviceStates, in - * which case we can relax this restriction. - */ - owner_dev =3D DEVICE(owner); - vmstate_register_ram(mr, owner_dev); - + memory_region_register_ram(mr, owner); return true; } =20 -bool memory_region_init_rom_device(MemoryRegion *mr, - Object *owner, - const MemoryRegionOps *ops, - void *opaque, - const char *name, - uint64_t size, +bool memory_region_init_rom_device(MemoryRegion *mr, Object *owner, + const MemoryRegionOps *ops, void *opaqu= e, + const char *name, uint64_t size, Error **errp) { - DeviceState *owner_dev; Error *err =3D NULL; =20 assert(ops); @@ -3741,15 +3715,7 @@ bool memory_region_init_rom_device(MemoryRegion *mr, } mr->ram =3D false; mr->rom_device =3D true; - /* This will assert if owner is neither NULL nor a DeviceState. - * We only want the owner here for the purposes of defining a - * unique name for migration. TODO: Ideally we should implement - * a naming scheme for Objects which are not DeviceStates, in - * which case we can relax this restriction. - */ - owner_dev =3D DEVICE(owner); - vmstate_register_ram(mr, owner_dev); - + memory_region_register_ram(mr, owner); return true; } =20 --=20 2.41.3 From nobody Sat Feb 7 06:14:41 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=eik.bme.hu Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1770254092932764.9685650476065; Wed, 4 Feb 2026 17:14:52 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vnnw6-0002dJ-9T; Wed, 04 Feb 2026 20:13:34 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vnnw4-0002cO-CS for qemu-devel@nongnu.org; Wed, 04 Feb 2026 20:13:33 -0500 Received: from zero.eik.bme.hu ([2001:738:2001:2001::2001]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vnnw2-00030f-Ss for qemu-devel@nongnu.org; Wed, 04 Feb 2026 20:13:32 -0500 Received: from localhost (localhost [127.0.0.1]) by zero.eik.bme.hu (Postfix) with ESMTP id 8DD8E596EA4; Thu, 05 Feb 2026 02:13:27 +0100 (CET) Received: from zero.eik.bme.hu ([127.0.0.1]) by localhost (zero.eik.bme.hu [127.0.0.1]) (amavis, port 10028) with ESMTP id rjxXgesbAH_J; Thu, 5 Feb 2026 02:13:25 +0100 (CET) Received: by zero.eik.bme.hu (Postfix, from userid 432) id 957E8596E9E; Thu, 05 Feb 2026 02:13:25 +0100 (CET) X-Virus-Scanned: amavis at eik.bme.hu Message-ID: In-Reply-To: References: From: BALATON Zoltan Subject: [PATCH v4 7/8] memory: Shorten memory_region_init_ram_device_ptr and memory_region_init_rom_device MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable To: qemu-devel@nongnu.org Cc: Peter Xu , Akihiko Odaki , Paolo Bonzini , Mark Cave-Ayland , Gerd Hoffmann , Max Filippov , Peter Maydell , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Thu, 05 Feb 2026 02:13:25 +0100 (CET) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2001:738:2001:2001::2001; envelope-from=balaton@eik.bme.hu; helo=zero.eik.bme.hu X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, 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: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1770254095763154100 Content-Type: text/plain; charset="utf-8" We can reuse memory_region_init_io in these functions. Also shorten some other function prototypes. Signed-off-by: BALATON Zoltan --- system/memory.c | 24 ++++++++---------------- 1 file changed, 8 insertions(+), 16 deletions(-) diff --git a/system/memory.c b/system/memory.c index 198d1d0b92..492bf51f48 100644 --- a/system/memory.c +++ b/system/memory.c @@ -1568,12 +1568,9 @@ static void memory_region_set_ops(MemoryRegion *mr, mr->terminates =3D true; } =20 -void memory_region_init_io(MemoryRegion *mr, - Object *owner, - const MemoryRegionOps *ops, - void *opaque, - const char *name, - uint64_t size) +void memory_region_init_io(MemoryRegion *mr, Object *owner, + const MemoryRegionOps *ops, void *opaque, + const char *name, uint64_t size) { memory_region_init(mr, owner, name, size); memory_region_set_ops(mr, ops, opaque); @@ -1677,8 +1674,7 @@ void memory_region_init_ram_device_ptr(MemoryRegion *= mr, Object *owner, const char *name, uint64_t size, void *ptr) { - memory_region_init(mr, owner, name, size); - memory_region_set_ops(mr, &ram_device_mem_ops, mr); + memory_region_init_io(mr, owner, &ram_device_mem_ops, mr, name, size); memory_region_setup_ram(mr); /* qemu_ram_alloc_from_ptr cannot fail with ptr !=3D NULL. */ assert(ptr !=3D NULL); @@ -1686,12 +1682,9 @@ void memory_region_init_ram_device_ptr(MemoryRegion = *mr, Object *owner, mr->ram_device =3D true; } =20 -void memory_region_init_alias(MemoryRegion *mr, - Object *owner, - const char *name, - MemoryRegion *orig, - hwaddr offset, - uint64_t size) +void memory_region_init_alias(MemoryRegion *mr, Object *owner, + const char *name, MemoryRegion *orig, + hwaddr offset, uint64_t size) { memory_region_init(mr, owner, name, size); mr->alias =3D orig; @@ -3706,8 +3699,7 @@ bool memory_region_init_rom_device(MemoryRegion *mr, = Object *owner, Error *err =3D NULL; =20 assert(ops); - memory_region_init(mr, owner, name, size); - memory_region_set_ops(mr, ops, opaque); + memory_region_init_io(mr, owner, ops, opaque, name, size); memory_region_setup_ram(mr); mr->ram_block =3D qemu_ram_alloc(size, 0, mr, &err); if (!memory_region_error_propagate(mr, err, errp)) { --=20 2.41.3 From nobody Sat Feb 7 06:14:41 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=eik.bme.hu Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1770254048396860.3835697238146; Wed, 4 Feb 2026 17:14:08 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vnnw7-0002dt-BV; Wed, 04 Feb 2026 20:13:35 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vnnw4-0002cN-CI for qemu-devel@nongnu.org; Wed, 04 Feb 2026 20:13:33 -0500 Received: from zero.eik.bme.hu ([152.66.115.2]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vnnw2-00030n-TL for qemu-devel@nongnu.org; Wed, 04 Feb 2026 20:13:32 -0500 Received: from localhost (localhost [127.0.0.1]) by zero.eik.bme.hu (Postfix) with ESMTP id 99B61596EB9; Thu, 05 Feb 2026 02:13:28 +0100 (CET) Received: from zero.eik.bme.hu ([127.0.0.1]) by localhost (zero.eik.bme.hu [127.0.0.1]) (amavis, port 10028) with ESMTP id fgxNwnRSQHa5; Thu, 5 Feb 2026 02:13:26 +0100 (CET) Received: by zero.eik.bme.hu (Postfix, from userid 432) id A11C5596E8E; Thu, 05 Feb 2026 02:13:26 +0100 (CET) X-Virus-Scanned: amavis at eik.bme.hu Message-ID: <0272d72ab16837fcf22b29f287c2d81e43e43b51.1770253186.git.balaton@eik.bme.hu> In-Reply-To: References: From: BALATON Zoltan Subject: [PATCH v4 8/8] memory: Factor out more common ram region initialization MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable To: qemu-devel@nongnu.org Cc: Peter Xu , Akihiko Odaki , Paolo Bonzini , Mark Cave-Ayland , Gerd Hoffmann , Max Filippov , Peter Maydell , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Thu, 05 Feb 2026 02:13:26 +0100 (CET) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=152.66.115.2; envelope-from=balaton@eik.bme.hu; helo=zero.eik.bme.hu X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=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: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1770254051259154100 Content-Type: text/plain; charset="utf-8" Introduce internal memory_region_setup_ram_ptr() function to remove duplicated code from different memory_region_init_ram_*ptr functions. Signed-off-by: BALATON Zoltan --- system/memory.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/system/memory.c b/system/memory.c index 492bf51f48..fa3e19e1fd 100644 --- a/system/memory.c +++ b/system/memory.c @@ -1660,25 +1660,28 @@ bool memory_region_init_ram_from_fd(MemoryRegion *m= r, Object *owner, } #endif =20 -void memory_region_init_ram_ptr(MemoryRegion *mr, Object *owner, - const char *name, uint64_t size, void *ptr) +static void memory_region_setup_ram_ptr(MemoryRegion *mr, uint64_t size, + void *ptr) { - memory_region_init(mr, owner, name, size); memory_region_setup_ram(mr); /* qemu_ram_alloc_from_ptr cannot fail with ptr !=3D NULL. */ assert(ptr !=3D NULL); mr->ram_block =3D qemu_ram_alloc_from_ptr(size, ptr, mr, &error_abort); } =20 +void memory_region_init_ram_ptr(MemoryRegion *mr, Object *owner, + const char *name, uint64_t size, void *ptr) +{ + memory_region_init(mr, owner, name, size); + memory_region_setup_ram_ptr(mr, size, ptr); +} + void memory_region_init_ram_device_ptr(MemoryRegion *mr, Object *owner, const char *name, uint64_t size, void *ptr) { memory_region_init_io(mr, owner, &ram_device_mem_ops, mr, name, size); - memory_region_setup_ram(mr); - /* qemu_ram_alloc_from_ptr cannot fail with ptr !=3D NULL. */ - assert(ptr !=3D NULL); - mr->ram_block =3D qemu_ram_alloc_from_ptr(size, ptr, mr, &error_abort); + memory_region_setup_ram_ptr(mr, size, ptr); mr->ram_device =3D true; } =20 --=20 2.41.3