From nobody Sun May 19 10:01:18 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1533130765361211.18985217140778; Wed, 1 Aug 2018 06:39:25 -0700 (PDT) Received: from localhost ([::1]:40195 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fkrLX-0000gr-Tk for importer@patchew.org; Wed, 01 Aug 2018 09:39:23 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45120) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fkrHK-0006Br-GX for qemu-devel@nongnu.org; Wed, 01 Aug 2018 09:35:08 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fkrHJ-00086l-DK for qemu-devel@nongnu.org; Wed, 01 Aug 2018 09:35:02 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:60724 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fkrHJ-00086L-90; Wed, 01 Aug 2018 09:35:01 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id BE5834021CC3; Wed, 1 Aug 2018 13:35:00 +0000 (UTC) Received: from t460s.redhat.com (ovpn-117-76.ams2.redhat.com [10.36.117.76]) by smtp.corp.redhat.com (Postfix) with ESMTP id E9B4110EE6CA; Wed, 1 Aug 2018 13:34:54 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Date: Wed, 1 Aug 2018 15:34:41 +0200 Message-Id: <20180801133444.11269-2-david@redhat.com> In-Reply-To: <20180801133444.11269-1-david@redhat.com> References: <20180801133444.11269-1-david@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Wed, 01 Aug 2018 13:35:00 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Wed, 01 Aug 2018 13:35:00 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'david@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v4 1/4] pc-dimm: assign and verify the "slot" property during pre_plug X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Eduardo Habkost , "Michael S . Tsirkin" , Stefan Weil , Xiao Guangrong , David Hildenbrand , Alexander Graf , Eric Auger , qemu-ppc@nongnu.org, Paolo Bonzini , Igor Mammedov , David Gibson , Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" We can assign and verify the slot before realizing and trying to plug. reading/writing the slot property should never fail, so let's reduce error handling a bit by using &error_abort. To do this during pre_plug, add and use (x86, ppc) pc_dimm_pre_plug(). Reviewed-by: David Gibson Reviewed-by: Igor Mammedov Reviewed-by: Eric Auger Signed-off-by: David Hildenbrand --- hw/i386/pc.c | 2 ++ hw/mem/pc-dimm.c | 35 ++++++++++++++++++----------------- hw/ppc/spapr.c | 9 ++++++++- include/hw/mem/pc-dimm.h | 1 + 4 files changed, 29 insertions(+), 18 deletions(-) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 83a444472b..96be77f0dd 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1696,6 +1696,8 @@ static void pc_memory_pre_plug(HotplugHandler *hotplu= g_dev, DeviceState *dev, error_setg(errp, "nvdimm is not enabled: missing 'nvdimm' in '-M'"= ); return; } + + pc_dimm_pre_plug(dev, MACHINE(hotplug_dev), errp); } =20 static void pc_memory_plug(HotplugHandler *hotplug_dev, diff --git a/hw/mem/pc-dimm.c b/hw/mem/pc-dimm.c index 65843bc52a..e56c4daef2 100644 --- a/hw/mem/pc-dimm.c +++ b/hw/mem/pc-dimm.c @@ -29,10 +29,27 @@ =20 static int pc_dimm_get_free_slot(const int *hint, int max_slots, Error **e= rrp); =20 +void pc_dimm_pre_plug(DeviceState *dev, MachineState *machine, Error **err= p) +{ + Error *local_err =3D NULL; + int slot; + + slot =3D object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP, + &error_abort); + slot =3D pc_dimm_get_free_slot(slot =3D=3D PC_DIMM_UNASSIGNED_SLOT ? N= ULL : &slot, + machine->ram_slots, &local_err); + if (local_err) { + goto out; + } + object_property_set_int(OBJECT(dev), slot, PC_DIMM_SLOT_PROP, &error_a= bort); + trace_mhp_pc_dimm_assigned_slot(slot); +out: + error_propagate(errp, local_err); +} + void pc_dimm_plug(DeviceState *dev, MachineState *machine, uint64_t align, Error **errp) { - int slot; PCDIMMDevice *dimm =3D PC_DIMM(dev); PCDIMMDeviceClass *ddc =3D PC_DIMM_GET_CLASS(dimm); MemoryRegion *vmstate_mr =3D ddc->get_vmstate_memory_region(dimm, @@ -59,22 +76,6 @@ void pc_dimm_plug(DeviceState *dev, MachineState *machin= e, uint64_t align, } trace_mhp_pc_dimm_assigned_address(addr); =20 - slot =3D object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP, &loca= l_err); - if (local_err) { - goto out; - } - - slot =3D pc_dimm_get_free_slot(slot =3D=3D PC_DIMM_UNASSIGNED_SLOT ? N= ULL : &slot, - machine->ram_slots, &local_err); - if (local_err) { - goto out; - } - object_property_set_int(OBJECT(dev), slot, PC_DIMM_SLOT_PROP, &local_e= rr); - if (local_err) { - goto out; - } - trace_mhp_pc_dimm_assigned_slot(slot); - memory_device_plug_region(machine, mr, addr); vmstate_register_ram(vmstate_mr, dev); =20 diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 421b2dd09b..4b33e9a08e 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -3191,6 +3191,7 @@ static void spapr_memory_pre_plug(HotplugHandler *hot= plug_dev, DeviceState *dev, sPAPRMachineState *spapr =3D SPAPR_MACHINE(hotplug_dev); PCDIMMDevice *dimm =3D PC_DIMM(dev); PCDIMMDeviceClass *ddc =3D PC_DIMM_GET_CLASS(dimm); + Error *local_err =3D NULL; MemoryRegion *mr; uint64_t size; Object *memdev; @@ -3216,7 +3217,13 @@ static void spapr_memory_pre_plug(HotplugHandler *ho= tplug_dev, DeviceState *dev, memdev =3D object_property_get_link(OBJECT(dimm), PC_DIMM_MEMDEV_PROP, &error_abort); pagesize =3D host_memory_backend_pagesize(MEMORY_BACKEND(memdev)); - spapr_check_pagesize(spapr, pagesize, errp); + spapr_check_pagesize(spapr, pagesize, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + pc_dimm_pre_plug(dev, MACHINE(hotplug_dev), errp); } =20 struct sPAPRDIMMState { diff --git a/include/hw/mem/pc-dimm.h b/include/hw/mem/pc-dimm.h index 26ebb7d5e9..7b120416d1 100644 --- a/include/hw/mem/pc-dimm.h +++ b/include/hw/mem/pc-dimm.h @@ -79,6 +79,7 @@ typedef struct PCDIMMDeviceClass { Error **errp); } PCDIMMDeviceClass; =20 +void pc_dimm_pre_plug(DeviceState *dev, MachineState *machine, Error **err= p); void pc_dimm_plug(DeviceState *dev, MachineState *machine, uint64_t align, Error **errp); void pc_dimm_unplug(DeviceState *dev, MachineState *machine); --=20 2.17.1 From nobody Sun May 19 10:01:18 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1533130883596774.090038032012; Wed, 1 Aug 2018 06:41:23 -0700 (PDT) Received: from localhost ([::1]:40213 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fkrNS-0002CT-Hw for importer@patchew.org; Wed, 01 Aug 2018 09:41:22 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45165) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fkrHN-0006Ea-QL for qemu-devel@nongnu.org; Wed, 01 Aug 2018 09:35:10 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fkrHM-00089y-SQ for qemu-devel@nongnu.org; Wed, 01 Aug 2018 09:35:05 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46728 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fkrHM-00089e-Mg; Wed, 01 Aug 2018 09:35:04 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 2C09140216E8; Wed, 1 Aug 2018 13:35:04 +0000 (UTC) Received: from t460s.redhat.com (ovpn-117-76.ams2.redhat.com [10.36.117.76]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0815110EE6CA; Wed, 1 Aug 2018 13:35:00 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Date: Wed, 1 Aug 2018 15:34:42 +0200 Message-Id: <20180801133444.11269-3-david@redhat.com> In-Reply-To: <20180801133444.11269-1-david@redhat.com> References: <20180801133444.11269-1-david@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Wed, 01 Aug 2018 13:35:04 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Wed, 01 Aug 2018 13:35:04 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'david@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v4 2/4] util/oslib-win32: indicate alignment for qemu_anon_ram_alloc() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Eduardo Habkost , "Michael S . Tsirkin" , Stefan Weil , Xiao Guangrong , David Hildenbrand , Alexander Graf , Eric Auger , qemu-ppc@nongnu.org, Paolo Bonzini , Igor Mammedov , David Gibson , Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Let's set the alignment just like for the posix variant. This will implicitly set the alignment of the underlying memory region and therefore make memory_region_get_alignment(mr) return something > 0 for all memory backends applicable to PCDIMM/NVDIMM. The allocation granularity is ususally 64k, while the page size is 4k. The documentation of VirtualAlloc is not really comprehensible in case only MEM_COMMIT is specified without an address. We'll detect the actual values and then go for the bigger one. The expection is, that it will always be 64k aligned. (The assumption is that MEM_COMMIT does an implicit MEM_RESERVE, so the address will always be aligned to the allocation granularity. And the allocation granularity is always bigger than the page size). This will allow us to drop special handling in pc.c for memory_region_get_alignment(mr) =3D=3D 0, as we can then assume that it is always set (and AFAICS >=3D getpagesize()). For pc in pc_memory_plug(), under Windows TARGET_PAGE_SIZE =3D=3D getpagesi= ze(), therefore alignment of DIMMs will not change, and therefore also not the guest physical memory layout. For spapr in spapr_memory_plug(), an alignment of 0 would have been used until now. As QEMU_ALIGN_UP will crash with the alignment being 0, this never worked, so we don't have to care about compatibility handling. Reviewed-by: David Gibson Signed-off-by: David Hildenbrand Reviewed-by: Igor Mammedov --- util/oslib-win32.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/util/oslib-win32.c b/util/oslib-win32.c index bb5ad28bd3..25dd1595ad 100644 --- a/util/oslib-win32.c +++ b/util/oslib-win32.c @@ -67,15 +67,24 @@ void *qemu_memalign(size_t alignment, size_t size) return qemu_oom_check(qemu_try_memalign(alignment, size)); } =20 +static int get_allocation_granularity(void) +{ + SYSTEM_INFO system_info; + + GetSystemInfo(&system_info); + return system_info.dwAllocationGranularity; +} + void *qemu_anon_ram_alloc(size_t size, uint64_t *align, bool shared) { void *ptr; =20 - /* FIXME: this is not exactly optimal solution since VirtualAlloc - has 64Kb granularity, but at least it guarantees us that the - memory is page aligned. */ ptr =3D VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE); trace_qemu_anon_ram_alloc(size, ptr); + + if (ptr && align) { + *align =3D MAX(get_allocation_granularity(), getpagesize()); + } return ptr; } =20 --=20 2.17.1 From nobody Sun May 19 10:01:18 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1533130997831636.9240858626761; Wed, 1 Aug 2018 06:43:17 -0700 (PDT) Received: from localhost ([::1]:40224 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fkrPI-0003hO-KJ for importer@patchew.org; Wed, 01 Aug 2018 09:43:16 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45228) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fkrHV-0006Kd-N9 for qemu-devel@nongnu.org; Wed, 01 Aug 2018 09:35:14 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fkrHU-0008E4-Tg for qemu-devel@nongnu.org; Wed, 01 Aug 2018 09:35:13 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46742 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fkrHU-0008Dh-OV; Wed, 01 Aug 2018 09:35:12 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 37E4B40216E8; Wed, 1 Aug 2018 13:35:12 +0000 (UTC) Received: from t460s.redhat.com (ovpn-117-76.ams2.redhat.com [10.36.117.76]) by smtp.corp.redhat.com (Postfix) with ESMTP id 6A3AE10EE6CA; Wed, 1 Aug 2018 13:35:04 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Date: Wed, 1 Aug 2018 15:34:43 +0200 Message-Id: <20180801133444.11269-4-david@redhat.com> In-Reply-To: <20180801133444.11269-1-david@redhat.com> References: <20180801133444.11269-1-david@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Wed, 01 Aug 2018 13:35:12 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Wed, 01 Aug 2018 13:35:12 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'david@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v4 3/4] pc: drop memory region alignment check for 0 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Eduardo Habkost , "Michael S . Tsirkin" , Stefan Weil , Xiao Guangrong , David Hildenbrand , Alexander Graf , Eric Auger , qemu-ppc@nongnu.org, Paolo Bonzini , Igor Mammedov , David Gibson , Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" All applicable memory regions always have an alignment > 0. All memory backends result in file_ram_alloc() or qemu_anon_ram_alloc() getting called, setting the alignment to > 0. So a PCDIMM memory region always has an alignment > 0. NVDIMM copy the alignment of the original memory memory region into the handcrafted memory region that will be used at this place. So the check for 0 can be dropped and we can reduce the special handling. Dropping this check makes factoring out of alignment handling easier as compat handling only has to look at pcmc->enforce_aligned_dimm and not care about the alignment of the memory region. Reviewed-by: David Gibson Reviewed-by: Igor Mammedov Signed-off-by: David Hildenbrand --- hw/i386/pc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 96be77f0dd..b31610ca63 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1713,7 +1713,7 @@ static void pc_memory_plug(HotplugHandler *hotplug_de= v, uint64_t align =3D TARGET_PAGE_SIZE; bool is_nvdimm =3D object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM); =20 - if (memory_region_get_alignment(mr) && pcmc->enforce_aligned_dimm) { + if (pcmc->enforce_aligned_dimm) { align =3D memory_region_get_alignment(mr); } =20 --=20 2.17.1 From nobody Sun May 19 10:01:18 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 153313065987464.04871018062067; Wed, 1 Aug 2018 06:37:39 -0700 (PDT) Received: from localhost ([::1]:40175 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fkrJq-0007ex-GU for importer@patchew.org; Wed, 01 Aug 2018 09:37:38 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45287) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fkrHZ-0006Np-9l for qemu-devel@nongnu.org; Wed, 01 Aug 2018 09:35:22 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fkrHX-0008FA-Hq for qemu-devel@nongnu.org; Wed, 01 Aug 2018 09:35:17 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:60740 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fkrHX-0008Eu-AN; Wed, 01 Aug 2018 09:35:15 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C72E040241C0; Wed, 1 Aug 2018 13:35:14 +0000 (UTC) Received: from t460s.redhat.com (ovpn-117-76.ams2.redhat.com [10.36.117.76]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7402D10EE6CD; Wed, 1 Aug 2018 13:35:12 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Date: Wed, 1 Aug 2018 15:34:44 +0200 Message-Id: <20180801133444.11269-5-david@redhat.com> In-Reply-To: <20180801133444.11269-1-david@redhat.com> References: <20180801133444.11269-1-david@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Wed, 01 Aug 2018 13:35:14 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Wed, 01 Aug 2018 13:35:14 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'david@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v4 4/4] pc-dimm: assign and verify the "addr" property during pre_plug X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Eduardo Habkost , "Michael S . Tsirkin" , Stefan Weil , Xiao Guangrong , David Hildenbrand , Alexander Graf , Eric Auger , qemu-ppc@nongnu.org, Paolo Bonzini , Igor Mammedov , David Gibson , Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" We can assign and verify the address before realizing and trying to plug. reading/writing the address property should never fail for DIMMs, so let's reduce error handling a bit by using &error_abort. Getting access to the memory region now might however fail. So forward errors from get_memory_region() properly. As all memory devices should use the alignment of the underlying memory region for guest physical address asignment, do detection of the alignment in pc_dimm_pre_plug(), but allow pc.c to overwrite the alignment for compatibility handling. Reviewed-by: Eric Auger Reviewed-by: Igor Mammedov Acked-by: David Gibson Signed-off-by: David Hildenbrand --- hw/i386/pc.c | 16 ++++--------- hw/mem/pc-dimm.c | 50 +++++++++++++++++++++------------------- hw/ppc/spapr.c | 7 +++--- include/hw/mem/pc-dimm.h | 6 ++--- 4 files changed, 37 insertions(+), 42 deletions(-) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index b31610ca63..03148450c8 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1679,7 +1679,9 @@ static void pc_memory_pre_plug(HotplugHandler *hotplu= g_dev, DeviceState *dev, Error **errp) { const PCMachineState *pcms =3D PC_MACHINE(hotplug_dev); + const PCMachineClass *pcmc =3D PC_MACHINE_GET_CLASS(pcms); const bool is_nvdimm =3D object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM); + const uint64_t legacy_align =3D TARGET_PAGE_SIZE; =20 /* * When -no-acpi is used with Q35 machine type, no ACPI is built, @@ -1697,7 +1699,8 @@ static void pc_memory_pre_plug(HotplugHandler *hotplu= g_dev, DeviceState *dev, return; } =20 - pc_dimm_pre_plug(dev, MACHINE(hotplug_dev), errp); + pc_dimm_pre_plug(dev, MACHINE(hotplug_dev), + pcmc->enforce_aligned_dimm ? NULL : &legacy_align, er= rp); } =20 static void pc_memory_plug(HotplugHandler *hotplug_dev, @@ -1706,18 +1709,9 @@ static void pc_memory_plug(HotplugHandler *hotplug_d= ev, HotplugHandlerClass *hhc; Error *local_err =3D NULL; PCMachineState *pcms =3D PC_MACHINE(hotplug_dev); - PCMachineClass *pcmc =3D PC_MACHINE_GET_CLASS(pcms); - PCDIMMDevice *dimm =3D PC_DIMM(dev); - PCDIMMDeviceClass *ddc =3D PC_DIMM_GET_CLASS(dimm); - MemoryRegion *mr =3D ddc->get_memory_region(dimm, &error_abort); - uint64_t align =3D TARGET_PAGE_SIZE; bool is_nvdimm =3D object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM); =20 - if (pcmc->enforce_aligned_dimm) { - align =3D memory_region_get_alignment(mr); - } - - pc_dimm_plug(dev, MACHINE(pcms), align, &local_err); + pc_dimm_plug(dev, MACHINE(pcms), &local_err); if (local_err) { goto out; } diff --git a/hw/mem/pc-dimm.c b/hw/mem/pc-dimm.c index e56c4daef2..fb6bcaedc4 100644 --- a/hw/mem/pc-dimm.c +++ b/hw/mem/pc-dimm.c @@ -29,9 +29,14 @@ =20 static int pc_dimm_get_free_slot(const int *hint, int max_slots, Error **e= rrp); =20 -void pc_dimm_pre_plug(DeviceState *dev, MachineState *machine, Error **err= p) +void pc_dimm_pre_plug(DeviceState *dev, MachineState *machine, + const uint64_t *legacy_align, Error **errp) { + PCDIMMDevice *dimm =3D PC_DIMM(dev); + PCDIMMDeviceClass *ddc =3D PC_DIMM_GET_CLASS(dimm); Error *local_err =3D NULL; + MemoryRegion *mr; + uint64_t addr, align; int slot; =20 slot =3D object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP, @@ -43,44 +48,41 @@ void pc_dimm_pre_plug(DeviceState *dev, MachineState *m= achine, Error **errp) } object_property_set_int(OBJECT(dev), slot, PC_DIMM_SLOT_PROP, &error_a= bort); trace_mhp_pc_dimm_assigned_slot(slot); + + mr =3D ddc->get_memory_region(dimm, &local_err); + if (local_err) { + goto out; + } + + align =3D legacy_align ? *legacy_align : memory_region_get_alignment(m= r); + addr =3D object_property_get_uint(OBJECT(dev), PC_DIMM_ADDR_PROP, + &error_abort); + addr =3D memory_device_get_free_addr(machine, !addr ? NULL : &addr, al= ign, + memory_region_size(mr), &local_err); + if (local_err) { + goto out; + } + trace_mhp_pc_dimm_assigned_address(addr); + object_property_set_uint(OBJECT(dev), addr, PC_DIMM_ADDR_PROP, + &error_abort); out: error_propagate(errp, local_err); } =20 -void pc_dimm_plug(DeviceState *dev, MachineState *machine, uint64_t align, - Error **errp) +void pc_dimm_plug(DeviceState *dev, MachineState *machine, Error **errp) { PCDIMMDevice *dimm =3D PC_DIMM(dev); PCDIMMDeviceClass *ddc =3D PC_DIMM_GET_CLASS(dimm); MemoryRegion *vmstate_mr =3D ddc->get_vmstate_memory_region(dimm, &error_abort= ); MemoryRegion *mr =3D ddc->get_memory_region(dimm, &error_abort); - Error *local_err =3D NULL; uint64_t addr; =20 - addr =3D object_property_get_uint(OBJECT(dimm), - PC_DIMM_ADDR_PROP, &local_err); - if (local_err) { - goto out; - } - - addr =3D memory_device_get_free_addr(machine, !addr ? NULL : &addr, al= ign, - memory_region_size(mr), &local_err); - if (local_err) { - goto out; - } - - object_property_set_uint(OBJECT(dev), addr, PC_DIMM_ADDR_PROP, &local_= err); - if (local_err) { - goto out; - } - trace_mhp_pc_dimm_assigned_address(addr); + addr =3D object_property_get_uint(OBJECT(dev), PC_DIMM_ADDR_PROP, + &error_abort); =20 memory_device_plug_region(machine, mr, addr); vmstate_register_ram(vmstate_mr, dev); - -out: - error_propagate(errp, local_err); } =20 void pc_dimm_unplug(DeviceState *dev, MachineState *machine) diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 4b33e9a08e..6136ec7986 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -3150,13 +3150,12 @@ static void spapr_memory_plug(HotplugHandler *hotpl= ug_dev, DeviceState *dev, PCDIMMDevice *dimm =3D PC_DIMM(dev); PCDIMMDeviceClass *ddc =3D PC_DIMM_GET_CLASS(dimm); MemoryRegion *mr =3D ddc->get_memory_region(dimm, &error_abort); - uint64_t align, size, addr; + uint64_t size, addr; uint32_t node; =20 - align =3D memory_region_get_alignment(mr); size =3D memory_region_size(mr); =20 - pc_dimm_plug(dev, MACHINE(ms), align, &local_err); + pc_dimm_plug(dev, MACHINE(ms), &local_err); if (local_err) { goto out; } @@ -3223,7 +3222,7 @@ static void spapr_memory_pre_plug(HotplugHandler *hot= plug_dev, DeviceState *dev, return; } =20 - pc_dimm_pre_plug(dev, MACHINE(hotplug_dev), errp); + pc_dimm_pre_plug(dev, MACHINE(hotplug_dev), NULL, errp); } =20 struct sPAPRDIMMState { diff --git a/include/hw/mem/pc-dimm.h b/include/hw/mem/pc-dimm.h index 7b120416d1..b382eb4303 100644 --- a/include/hw/mem/pc-dimm.h +++ b/include/hw/mem/pc-dimm.h @@ -79,8 +79,8 @@ typedef struct PCDIMMDeviceClass { Error **errp); } PCDIMMDeviceClass; =20 -void pc_dimm_pre_plug(DeviceState *dev, MachineState *machine, Error **err= p); -void pc_dimm_plug(DeviceState *dev, MachineState *machine, uint64_t align, - Error **errp); +void pc_dimm_pre_plug(DeviceState *dev, MachineState *machine, + const uint64_t *legacy_align, Error **errp); +void pc_dimm_plug(DeviceState *dev, MachineState *machine, Error **errp); void pc_dimm_unplug(DeviceState *dev, MachineState *machine); #endif --=20 2.17.1