<!DOCTYPE html><html><head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body> Am 25.03.25 um 00:07 schrieb Bert Karwatzki: <blockquote type="cite" cite="mid:20250324230712.4122-1-spasswolf@web.de"> <pre class="moz-quote-pre" wrap="">Here's the dmesg from linux-next-6.14-rc7-next20250321 (CONFIG_PCI_P2PDMA not set) The memory ranges of (afe00000000-affffffffff) or (3ffe00000000-3fffffffffff) are mentioned in neither of them. </pre> </blockquote> Ugh, next time either in two mails or as attachment please. I had to separate the logs manually again. The BIOS programs multiple root PCIe resources: [ 0.310962] [ T1] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000dffff window] [ 0.310963] [ T1] pci_bus 0000:00: root bus resource [mem 0xf0000000-0xfcffffff window] [ 0.310965] [ T1] pci_bus 0000:00: root bus resource [mem 0x1010000000-0xffffffffff window] But by default all BARs end up in the 0xf0000000-0xfcffffff window and are so accessible to the iGPU. So I don't see a reason why dma_addressing_limited() should return true. Regards, Christian. </body> </html>