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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists1p.gnu.org; Received-SPF: pass client-ip=148.163.156.1; envelope-from=shivangu@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-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: 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 @ibm.com) X-ZM-MESSAGEID: 1782472994531158500 Content-Type: text/plain; charset="utf-8" Currently externally provided dtb is overwritten in `pnv_reset`. Fix this by only creating dtb if not provided from `-dtb`. Signed-off-by: Shivang Upadhyay Reviewed-by: Aditya Gupta --- hw/ppc/pnv.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c index 62812f22f8..e44fb7e2dc 100644 --- a/hw/ppc/pnv.c +++ b/hw/ppc/pnv.c @@ -803,9 +803,13 @@ static void pnv_reset(MachineState *machine, ResetType= type) mpipl_write_succeeded =3D do_mpipl_write(pnv); } =20 - /* Regenerate device tree */ - fdt =3D pnv_dt_create(machine); - _FDT((fdt_pack(fdt))); + /* Only create new dt if not provided in -dtb */ + if (!machine->dtb) { + fdt =3D pnv_dt_create(machine); + _FDT((fdt_pack(fdt))); + } else { + fdt =3D machine->fdt; + } =20 /* * If it's a MPIPL boot, add the "mpipl-boot" property, and reset the --=20 2.54.0 From nobody Sun Jul 26 11:50:50 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; 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; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists1p.gnu.org; Received-SPF: pass client-ip=148.163.156.1; envelope-from=shivangu@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-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: 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 @ibm.com) X-ZM-MESSAGEID: 1782473014725158500 Content-Type: text/plain; charset="utf-8" Test boots a powernv11 machine, using a custom dtb. Custom dtb has the following bootargs. chosen { bootargs =3D "hello world"; }; Test Checks wheather above bootargs make it to kernel's command line. Signed-off-by: Shivang Upadhyay Reviewed-by: Aditya Gupta --- tests/functional/ppc64/test_powernv.py | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/tests/functional/ppc64/test_powernv.py b/tests/functional/ppc6= 4/test_powernv.py index 0ea6c93e42..cb8f6545a0 100755 --- a/tests/functional/ppc64/test_powernv.py +++ b/tests/functional/ppc64/test_powernv.py @@ -27,6 +27,11 @@ class PowernvMachine(LinuxKernelTest): 'buildroot/qemu_ppc64le_powernv8-2025.02/rootfs.ext2'), 'aee2192b692077c4bde31cb56ce474424b358f17cec323d5c94af3970c9aada2') =20 + # testdtb for power11, which contains string "hello world" in command = line + ASSET_SAMPLE_DTB =3D Asset( + ('https://github.com/roz3x/qemu/raw/refs/heads/sample-dtb/output.d= tb'), + 'ea1271516264eea1eb58a067a99d0c2ca9528be8dc7d4e46bb2d5ae0d42fc568') + def do_test_linux_boot(self, command_line =3D KERNEL_COMMON_COMMAND_LI= NE): self.require_accelerator("tcg") kernel_path =3D self.ASSET_KERNEL.fetch() @@ -104,6 +109,20 @@ def do_test_ppc64_powernv(self, proc): # Device detection output driven by udev probing is sometimes cut = off # from console output, suspect S14silence-console init script. =20 + def test_ppc64_powernv_external_dtb(self): + self.set_machine('powernv11') + self.require_accelerator("tcg") + + kernel_path =3D self.ASSET_KERNEL.fetch() + sample_dtb_path =3D self.ASSET_SAMPLE_DTB.fetch() + self.vm.set_console() + self.vm.add_args('-kernel', kernel_path, + '-dtb', sample_dtb_path) + self.vm.launch() + + # check if custom dtb is reflected or not + wait_for_console_pattern(self, "Kernel command line: hello world",= self.panic_message) + def test_powernv8(self): self.set_machine('powernv8') self.do_test_ppc64_powernv('P8') --=20 2.54.0