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charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=202.12.124.156; envelope-from=its@irrelevant.dk; helo=fhigh-b5-smtp.messagingengine.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, 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: 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 @irrelevant.dk) X-ZM-MESSAGEID: 1764060535817019200 From: Philippe Mathieu-Daud=C3=A9 Per the PCI spec 3.0, in section 6.2.5.1, "Address Maps": A 32-bit register can be implemented to support a single memory size that is a power of 2 from 16 bytes to 2 GB. Add a check in nvme_init_pmr(), returning an error if the PMR region size is too small; and update the QTest. Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Klaus Jensen Signed-off-by: Klaus Jensen --- hw/nvme/ctrl.c | 13 +++++++++++-- tests/qtest/nvme-test.c | 2 +- 2 files changed, 12 insertions(+), 3 deletions(-) diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c index 901d4d863355..cc4593cd427a 100644 --- a/hw/nvme/ctrl.c +++ b/hw/nvme/ctrl.c @@ -8814,10 +8814,15 @@ static void nvme_init_cmb(NvmeCtrl *n, PCIDevice *p= ci_dev) } } =20 -static void nvme_init_pmr(NvmeCtrl *n, PCIDevice *pci_dev) +static bool nvme_init_pmr(NvmeCtrl *n, PCIDevice *pci_dev, Error **errp) { uint32_t pmrcap =3D ldl_le_p(&n->bar.pmrcap); =20 + if (memory_region_size(&n->pmr.dev->mr) < 16) { + error_setg(errp, "PMR device must have at least 16 bytes"); + return false; + } + NVME_PMRCAP_SET_RDS(pmrcap, 1); NVME_PMRCAP_SET_WDS(pmrcap, 1); NVME_PMRCAP_SET_BIR(pmrcap, NVME_PMR_BIR); @@ -8832,6 +8837,8 @@ static void nvme_init_pmr(NvmeCtrl *n, PCIDevice *pci= _dev) PCI_BASE_ADDRESS_MEM_PREFETCH, &n->pmr.dev->mr); =20 memory_region_set_enabled(&n->pmr.dev->mr, false); + + return true; } =20 static uint64_t nvme_mbar_size(unsigned total_queues, unsigned total_irqs, @@ -9050,7 +9057,9 @@ static bool nvme_init_pci(NvmeCtrl *n, PCIDevice *pci= _dev, Error **errp) } =20 if (n->pmr.dev) { - nvme_init_pmr(n, pci_dev); + if (!nvme_init_pmr(n, pci_dev, errp)) { + return false; + } } =20 return true; diff --git a/tests/qtest/nvme-test.c b/tests/qtest/nvme-test.c index 5ad6821f7af9..4aec1651e6e2 100644 --- a/tests/qtest/nvme-test.c +++ b/tests/qtest/nvme-test.c @@ -149,7 +149,7 @@ static void nvme_register_nodes(void) .before_cmd_line =3D "-drive id=3Ddrv0,if=3Dnone,file=3Dnull-co://= ," "file.read-zeroes=3Don,format=3Draw " "-object memory-backend-ram,id=3Dpmr0," - "share=3Don,size=3D8", + "share=3Don,size=3D16", }; =20 add_qpci_address(&opts, &(QPCIAddress) { .devfn =3D QPCI_DEVFN(4, 0) }= ); --=20 2.51.0