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[83.57.168.62]) by smtp.gmail.com with ESMTPSA id h13sm693837wrx.82.2021.11.18.11.20.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 18 Nov 2021 11:20:26 -0800 (PST) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Subject: [PATCH-for-6.2 1/2] hw/display: Add Error* handle to vga_common_init() Date: Thu, 18 Nov 2021 20:20:19 +0100 Message-Id: <20211118192020.61245-2-philmd@redhat.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20211118192020.61245-1-philmd@redhat.com> References: <20211118192020.61245-1-philmd@redhat.com> MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=philmd@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=170.10.129.124; envelope-from=philmd@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -34 X-Spam_score: -3.5 X-Spam_bar: --- X-Spam_report: (-3.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.698, 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_H4=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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thomas Huth , "Michael S. Tsirkin" , John Snow , "Jose R . Ziviani" , Gerd Hoffmann , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" We want vga_common_init() to fail gracefully, therefore allow it to take an Error* handle. Signed-off-by: Philippe Mathieu-Daudé --- hw/display/vga_int.h | 2 +- hw/display/ati.c | 4 +++- hw/display/cirrus_vga.c | 4 +++- hw/display/cirrus_vga_isa.c | 4 +++- hw/display/qxl.c | 4 +++- hw/display/vga-isa-mm.c | 3 ++- hw/display/vga-isa.c | 4 +++- hw/display/vga-pci.c | 8 ++++++-- hw/display/vga.c | 4 +++- hw/display/virtio-vga.c | 4 +++- hw/display/vmware_vga.c | 2 +- 11 files changed, 31 insertions(+), 12 deletions(-) diff --git a/hw/display/vga_int.h b/hw/display/vga_int.h index 847e784ca6a..305e700014d 100644 --- a/hw/display/vga_int.h +++ b/hw/display/vga_int.h @@ -156,7 +156,7 @@ static inline int c6_to_8(int v) return (v << 2) | (b << 1) | b; } -void vga_common_init(VGACommonState *s, Object *obj); +bool vga_common_init(VGACommonState *s, Object *obj, Error **errp); void vga_init(VGACommonState *s, Object *obj, MemoryRegion *address_space, MemoryRegion *address_space_io, bool init_vga_ports); MemoryRegion *vga_init_io(VGACommonState *s, Object *obj, diff --git a/hw/display/ati.c b/hw/display/ati.c index 31f22754dce..6e38e005022 100644 --- a/hw/display/ati.c +++ b/hw/display/ati.c @@ -955,7 +955,9 @@ static void ati_vga_realize(PCIDevice *dev, Error **errp) } /* init vga bits */ - vga_common_init(vga, OBJECT(s)); + if (!vga_common_init(vga, OBJECT(s), errp)) { + return; + } vga_init(vga, OBJECT(s), pci_address_space(dev), pci_address_space_io(dev), true); vga->con = graphic_console_init(DEVICE(s), 0, s->vga.hw_ops, &s->vga); diff --git a/hw/display/cirrus_vga.c b/hw/display/cirrus_vga.c index fdca6ca659f..5a7ddb84ff0 100644 --- a/hw/display/cirrus_vga.c +++ b/hw/display/cirrus_vga.c @@ -2954,7 +2954,9 @@ static void pci_cirrus_vga_realize(PCIDevice *dev, Error **errp) return; } /* setup VGA */ - vga_common_init(&s->vga, OBJECT(dev)); + if (!vga_common_init(&s->vga, OBJECT(dev), errp)) { + return; + } cirrus_init_common(s, OBJECT(dev), device_id, 1, pci_address_space(dev), pci_address_space_io(dev)); s->vga.con = graphic_console_init(DEVICE(dev), 0, s->vga.hw_ops, &s->vga); diff --git a/hw/display/cirrus_vga_isa.c b/hw/display/cirrus_vga_isa.c index 4f6fb1af3bd..96144bd6906 100644 --- a/hw/display/cirrus_vga_isa.c +++ b/hw/display/cirrus_vga_isa.c @@ -56,7 +56,9 @@ static void isa_cirrus_vga_realizefn(DeviceState *dev, Error **errp) return; } s->global_vmstate = true; - vga_common_init(s, OBJECT(dev)); + if (!vga_common_init(s, OBJECT(dev), errp)) { + return; + } cirrus_init_common(&d->cirrus_vga, OBJECT(dev), CIRRUS_ID_CLGD5430, 0, isa_address_space(isadev), isa_address_space_io(isadev)); diff --git a/hw/display/qxl.c b/hw/display/qxl.c index 29c80b4289b..16eb98c25d8 100644 --- a/hw/display/qxl.c +++ b/hw/display/qxl.c @@ -2198,7 +2198,9 @@ static void qxl_realize_primary(PCIDevice *dev, Error **errp) qxl_init_ramsize(qxl); vga->vbe_size = qxl->vgamem_size; vga->vram_size_mb = qxl->vga.vram_size / MiB; - vga_common_init(vga, OBJECT(dev)); + if (!vga_common_init(vga, OBJECT(dev), errp)) { + return; + } vga_init(vga, OBJECT(dev), pci_address_space(dev), pci_address_space_io(dev), false); portio_list_init(&qxl->vga_port_list, OBJECT(dev), qxl_vga_portio_list, diff --git a/hw/display/vga-isa-mm.c b/hw/display/vga-isa-mm.c index 7321b7a06d5..420da1d7467 100644 --- a/hw/display/vga-isa-mm.c +++ b/hw/display/vga-isa-mm.c @@ -25,6 +25,7 @@ #include "qemu/osdep.h" #include "qemu/bitops.h" #include "qemu/units.h" +#include "qapi/error.h" #include "migration/vmstate.h" #include "hw/display/vga.h" #include "vga_int.h" @@ -101,7 +102,7 @@ int isa_vga_mm_init(hwaddr vram_base, s->vga.vram_size_mb = VGA_RAM_SIZE / MiB; s->vga.global_vmstate = true; - vga_common_init(&s->vga, NULL); + vga_common_init(&s->vga, NULL, &error_fatal); vga_mm_init(s, vram_base, ctrl_base, it_shift, address_space); s->vga.con = graphic_console_init(NULL, 0, s->vga.hw_ops, s); diff --git a/hw/display/vga-isa.c b/hw/display/vga-isa.c index 8cea84f2bea..2782012196a 100644 --- a/hw/display/vga-isa.c +++ b/hw/display/vga-isa.c @@ -72,7 +72,9 @@ static void vga_isa_realizefn(DeviceState *dev, Error **errp) } s->global_vmstate = true; - vga_common_init(s, OBJECT(dev)); + if (!vga_common_init(s, OBJECT(dev), errp)) { + return; + } s->legacy_address_space = isa_address_space(isadev); vga_io_memory = vga_init_io(s, OBJECT(dev), &vga_ports, &vbe_ports); isa_register_portio_list(isadev, &d->portio_vga, diff --git a/hw/display/vga-pci.c b/hw/display/vga-pci.c index 62fb5c38c1f..3e5bc259f7a 100644 --- a/hw/display/vga-pci.c +++ b/hw/display/vga-pci.c @@ -239,7 +239,9 @@ static void pci_std_vga_realize(PCIDevice *dev, Error **errp) bool edid = false; /* vga + console init */ - vga_common_init(s, OBJECT(dev)); + if (!vga_common_init(s, OBJECT(dev), errp)) { + return; + } vga_init(s, OBJECT(dev), pci_address_space(dev), pci_address_space_io(dev), true); @@ -275,7 +277,9 @@ static void pci_secondary_vga_realize(PCIDevice *dev, Error **errp) bool edid = false; /* vga + console init */ - vga_common_init(s, OBJECT(dev)); + if (!vga_common_init(s, OBJECT(dev), errp)) { + return; + } s->con = graphic_console_init(DEVICE(dev), 0, s->hw_ops, s); /* mmio bar */ diff --git a/hw/display/vga.c b/hw/display/vga.c index 9d1f66af402..a6759c7e934 100644 --- a/hw/display/vga.c +++ b/hw/display/vga.c @@ -2168,7 +2168,7 @@ static inline uint32_t uint_clamp(uint32_t val, uint32_t vmin, uint32_t vmax) return val; } -void vga_common_init(VGACommonState *s, Object *obj) +bool vga_common_init(VGACommonState *s, Object *obj, Error **errp) { int i, j, v, b; @@ -2237,6 +2237,8 @@ void vga_common_init(VGACommonState *s, Object *obj) s->default_endian_fb = false; #endif vga_dirty_log_start(s); + + return true; } static const MemoryRegionPortio vga_portio_list[] = { diff --git a/hw/display/virtio-vga.c b/hw/display/virtio-vga.c index 9e57f61e9ed..d89735d7301 100644 --- a/hw/display/virtio-vga.c +++ b/hw/display/virtio-vga.c @@ -119,7 +119,9 @@ static void virtio_vga_base_realize(VirtIOPCIProxy *vpci_dev, Error **errp) /* init vga compat bits */ vga->vram_size_mb = 8; - vga_common_init(vga, OBJECT(vpci_dev)); + if (!vga_common_init(vga, OBJECT(vpci_dev), errp)) { + return; + } vga_init(vga, OBJECT(vpci_dev), pci_address_space(&vpci_dev->pci_dev), pci_address_space_io(&vpci_dev->pci_dev), true); pci_register_bar(&vpci_dev->pci_dev, 0, diff --git a/hw/display/vmware_vga.c b/hw/display/vmware_vga.c index e2969a6c81c..d67318e6e46 100644 --- a/hw/display/vmware_vga.c +++ b/hw/display/vmware_vga.c @@ -1248,7 +1248,7 @@ static void vmsvga_init(DeviceState *dev, struct vmsvga_state_s *s, &error_fatal); s->fifo_ptr = memory_region_get_ram_ptr(&s->fifo_ram); - vga_common_init(&s->vga, OBJECT(dev)); + vga_common_init(&s->vga, OBJECT(dev), &error_fatal); vga_init(&s->vga, OBJECT(dev), address_space, io, true); vmstate_register(NULL, 0, &vmstate_vga_common, &s->vga); s->new_depth = 32; From patchwork Thu Nov 18 19:20:20 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= X-Patchwork-Id: 12627595 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1D80CC433F5 for ; Thu, 18 Nov 2021 19:23:14 +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 B96976137B for ; Thu, 18 Nov 2021 19:23:13 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org B96976137B Authentication-Results: mail.kernel.org; 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[83.57.168.62]) by smtp.gmail.com with ESMTPSA id u14sm679584wrt.49.2021.11.18.11.20.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 18 Nov 2021 11:20:31 -0800 (PST) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Subject: [PATCH-for-6.2 2/2] hw/display: Do not allow multiple identical VGA devices Date: Thu, 18 Nov 2021 20:20:20 +0100 Message-Id: <20211118192020.61245-3-philmd@redhat.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20211118192020.61245-1-philmd@redhat.com> References: <20211118192020.61245-1-philmd@redhat.com> MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=philmd@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=170.10.129.124; envelope-from=philmd@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -34 X-Spam_score: -3.5 X-Spam_bar: --- X-Spam_report: (-3.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.698, 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_H4=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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thomas Huth , "Michael S. Tsirkin" , John Snow , "Jose R . Ziviani" , Gerd Hoffmann , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" vga_common_init() create a MemoryRegion named "vga.vram", used as a singleton for the device class. When creating the same device type multiple times, we get: $ qemu-system-mips64 -M pica61 -device isa-cirrus-vga RAMBlock "vga.vram" already registered, abort! Aborted (core dumped) Commit 7852a77f598 ("vga: don't abort when adding a duplicate isa-vga device") added a check for a single device, generalize it to all VGA devices which call vga_common_init(): $ qemu-system-mips64 -M pica61 -device isa-cirrus-vga qemu-system-mips64: -device isa-cirrus-vga: at most one isa-cirrus-vga device is permitted Reported-by: John Snow Resolves: https://gitlab.com/qemu-project/qemu/-/issues/44 Signed-off-by: Philippe Mathieu-Daudé --- hw/display/vga-isa.c | 9 --------- hw/display/vga.c | 13 +++++++++++++ 2 files changed, 13 insertions(+), 9 deletions(-) diff --git a/hw/display/vga-isa.c b/hw/display/vga-isa.c index 2782012196a..b930c8d2667 100644 --- a/hw/display/vga-isa.c +++ b/hw/display/vga-isa.c @@ -62,15 +62,6 @@ static void vga_isa_realizefn(DeviceState *dev, Error **errp) MemoryRegion *vga_io_memory; const MemoryRegionPortio *vga_ports, *vbe_ports; - /* - * make sure this device is not being added twice, if so - * exit without crashing qemu - */ - if (object_resolve_path_type("", TYPE_ISA_VGA, NULL)) { - error_setg(errp, "at most one %s device is permitted", TYPE_ISA_VGA); - return; - } - s->global_vmstate = true; if (!vga_common_init(s, OBJECT(dev), errp)) { return; diff --git a/hw/display/vga.c b/hw/display/vga.c index a6759c7e934..8f0d5cc9019 100644 --- a/hw/display/vga.c +++ b/hw/display/vga.c @@ -2172,6 +2172,19 @@ bool vga_common_init(VGACommonState *s, Object *obj, Error **errp) { int i, j, v, b; + if (obj) { + const char *typename = object_get_typename(obj); + + /* + * make sure this device is not being added twice, + * if so exit without crashing qemu + */ + if (object_resolve_path_type("", typename, NULL)) { + error_setg(errp, "at most one %s device is permitted", typename); + return false; + } + } + for(i = 0;i < 256; i++) { v = 0; for(j = 0; j < 8; j++) {