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Fri, 06 Sep 2024 03:17:01 -0700 (PDT) X-Google-Smtp-Source: AGHT+IEmGAJaGELTfVGRxDX5u2jlr0rN7fwdCPApjWMDKMWEGFArauTo03LutCK9CizVUM525sarBg== X-Received: by 2002:a5d:5406:0:b0:378:7de8:df33 with SMTP id ffacd0b85a97d-378888478bfmr1210345f8f.31.1725617820927; Fri, 06 Sep 2024 03:17:00 -0700 (PDT) Received: from avogadro.local ([151.95.101.29]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3749ef812cbsm21444746f8f.83.2024.09.06.03.17.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 06 Sep 2024 03:17:00 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: David Hildenbrand , Michael Tokarev Subject: [PATCH v2] virtio: kconfig: memory devices are PCI only Date: Fri, 6 Sep 2024 12:16:58 +0200 Message-ID: <20240906101658.514470-1-pbonzini@redhat.com> X-Mailer: git-send-email 2.46.0 MIME-Version: 1.0 Received-SPF: pass client-ip=170.10.129.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.142, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Virtio memory devices rely on PCI BARs to expose the contents of memory. Because of this they cannot be used (yet) with virtio-mmio or virtio-ccw. In fact the code that is common to virtio-mem and virtio-pmem, which is in hw/virtio/virtio-md-pci.c, is only included if CONFIG_VIRTIO_PCI is set. Reproduce the same condition in the Kconfig file, only allowing VIRTIO_MEM and VIRTIO_PMEM to be defined if the transport supports it. Without this patch it is possible to create a configuration with CONFIG_VIRTIO_PCI=n and CONFIG_VIRTIO_MEM=y, but that causes a linking failure. Cc: David Hildenbrand Reported-by: Michael Tokarev Signed-off-by: Paolo Bonzini Reviewed-by: David Hildenbrand Reviewed-by: Pankaj Gupta --- hw/virtio/Kconfig | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/hw/virtio/Kconfig b/hw/virtio/Kconfig index aa63ff7fd41..0afec2ae929 100644 --- a/hw/virtio/Kconfig +++ b/hw/virtio/Kconfig @@ -16,6 +16,7 @@ config VIRTIO_PCI default y if PCI_DEVICES depends on PCI select VIRTIO + select VIRTIO_MD_SUPPORTED config VIRTIO_MMIO bool @@ -35,10 +36,17 @@ config VIRTIO_CRYPTO default y depends on VIRTIO +# not all virtio transports support memory devices; if none does, +# no need to include the code +config VIRTIO_MD_SUPPORTED + bool + config VIRTIO_MD bool + depends on VIRTIO_MD_SUPPORTED select MEM_DEVICE +# selected by the board if it has the required support code config VIRTIO_PMEM_SUPPORTED bool @@ -46,9 +54,11 @@ config VIRTIO_PMEM bool default y depends on VIRTIO + depends on VIRTIO_MD_SUPPORTED depends on VIRTIO_PMEM_SUPPORTED select VIRTIO_MD +# selected by the board if it has the required support code config VIRTIO_MEM_SUPPORTED bool @@ -57,6 +67,7 @@ config VIRTIO_MEM default y depends on VIRTIO depends on LINUX + depends on VIRTIO_MD_SUPPORTED depends on VIRTIO_MEM_SUPPORTED select VIRTIO_MD