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b=Wj49olVgTPBweN/0Z6elPxL7Eiu3lWT8jh+Xo//ZzLd0+hZ+0w8QT5cdoP2X1b0Sx7TjGqNrEIfrMF4ALWXuMFM0VkxfrBzU3C8M/2GS1X6vRFAcffkglQmcw3j8oliqfsDYTvw5zcI+OApK3MgcVPy/O7vQSI3q6mWSVSjIimfslMTKjDUKQ5bj5mdn/hpMmw4xbF/wGz7tz17hjt5i/Xm2KSY3Cw9ZjNyAUhzV5DxiXZO1B8x1M+8K8lnVUaD5ANT79qXUg+UyS7574EJxChUG/L+9o86wU4COzkejk37BRjxrhPjFG3LNLd22jSsw1KuQ7aQhDmZNGdCmgUydJg== From: Djordje Todorovic To: "qemu-devel@nongnu.org" CC: "qemu-riscv@nongnu.org" , "cfu@mips.com" , "mst@redhat.com" , "marcel.apfelbaum@gmail.com" , "dbarboza@ventanamicro.com" , "philmd@linaro.org" , "alistair23@gmail.com" , "thuth@redhat.com" , Djordje Todorovic Subject: [PATCH v2 15/16] hw/virtio: Use DEVICE_LITTLE_ENDIAN for virtio-mmio legacy ops Thread-Topic: [PATCH v2 15/16] hw/virtio: Use DEVICE_LITTLE_ENDIAN for virtio-mmio legacy ops Thread-Index: AQHcpkBdc2KV82CMr0yIVNvOa7oNhw== Date: Wed, 25 Feb 2026 10:20:29 +0000 Message-ID: <20260225102016.200654-16-djordje.todorovic@htecgroup.com> References: <20260225102016.200654-1-djordje.todorovic@htecgroup.com> In-Reply-To: <20260225102016.200654-1-djordje.todorovic@htecgroup.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=htecgroup.com; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a01:111:f403:c200::1; envelope-from=Djordje.Todorovic@htecgroup.com; helo=DB3PR0202CU003.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-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-ZohoMail-DKIM: pass (identity @htecgroup.com) X-ZM-MESSAGEID: 1772014923524158500 Content-Type: text/plain; charset="utf-8" From: djtodoro The virtio-mmio transport registers are always little-endian per spec. DEVICE_NATIVE_ENDIAN caused a double byte-swap on BE targets, making the kernel see a swapped magic value. --- hw/virtio/virtio-mmio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/virtio/virtio-mmio.c b/hw/virtio/virtio-mmio.c index 0b0412b22f..92ff793d2c 100644 --- a/hw/virtio/virtio-mmio.c +++ b/hw/virtio/virtio-mmio.c @@ -527,7 +527,7 @@ static void virtio_mmio_write(void *opaque, hwaddr offs= et, uint64_t value, static const MemoryRegionOps virtio_legacy_mem_ops =3D { .read =3D virtio_mmio_read, .write =3D virtio_mmio_write, - .endianness =3D DEVICE_NATIVE_ENDIAN, + .endianness =3D DEVICE_LITTLE_ENDIAN, }; =20 static const MemoryRegionOps virtio_mem_ops =3D { --=20 2.34.1