Booting Xen 4.9.0 on kernel-default 4.11.0-4, I currently see a non-fatal WARNING efi: Could not map UEFI random seed! ... (XEN) Xen version 4.9.0_04-493 (abuild@suse.de) (gcc (SUSE Linux) 4.8.5) debug=y Wed May 10 21:26:38 UTC 2017 (XEN) Latest ChangeSet: (XEN) Bootloader: EFI (XEN) Command line: dom0_mem=4096M,max:4096M dom0_max_vcpus=1 dom0_vcpus_pin=true cpuidle=1 c pufreq=xen vga=gfx-1920x1080x16 com1=115200,8n1,pci console=com1,vga console_timestamps conso le_to_ring conring_size=64 reboot=acpi sched=credit2 clocksource=hpet iommu=verbose log_buf_l en=16M sched_debug apic_verbosity=verbose loglvl=warning guest_loglvl=none/warning (XEN) Xen image load base address: 0x8c200000 ... [ 0.000000] console [xenboot0] enabled [ 0.000000] NX (Execute Disable) protection: active [ 0.000000] efi: EFI v2.31 by American Megatrends [ 0.000000] efi: ESRT=0x9ef8d998 ACPI 2.0=0x9e819000 ACPI=0x9e819000 SMBIOS=0xf04c0 M PS=0xfd490 [ 0.000000] ------------[ cut here ]------------ [ 0.000000] WARNING: CPU: 0 PID: 0 at ../mm/early_ioremap.c:137 __early_ioremap+0xf4/0x1b9 [ 0.000000] Modules linked in: [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.11.0-4.gcb15206-default #1 [ 0.000000] Call Trace: [ 0.000000] dump_stack+0x5c/0x78 [ 0.000000] __warn+0xbe/0xe0 [ 0.000000] __early_ioremap+0xf4/0x1b9 [ 0.000000] efi_config_parse_tables+0x10d/0x1a7 [ 0.000000] ? __early_set_fixmap+0x8b/0x8e [ 0.000000] ? efi_config_init+0x71/0x93 [ 0.000000] ? efi_config_init+0x71/0x93 [ 0.000000] ? efi_init+0x35f/0x45d [ 0.000000] ? 0xffffffff81000000 [ 0.000000] ? setup_arch+0x471/0xcea [ 0.000000] ? printk+0x43/0x4b [ 0.000000] ? start_kernel+0x9d/0x43e [ 0.000000] ? xen_start_kernel+0x4de/0x4e8 [ 0.000000] ---[ end trace c06508679cc2dcf2 ]--- [ 0.000000] efi: Could not map UEFI random seed! [ 0.000000] efi: memattr: Unexpected EFI Memory Attributes table version -268402688 [ 0.000000] SMBIOS 2.7 present. [ 0.000000] DMI: Supermicro X10SAT/X10SAT, BIOS 3.0 05/26/2015 [ 0.000000] Hypervisor detected: Xen ... The notice is relatively new; tho can't tell you specifically when it appeared. The system *does* boot successfully, and *appears* to be functioning. Digging, I found Patchwork [1/2] efi: add support for seeding the RNG from a UEFI config table https://patchwork.kernel.org/patch/9364581/ Is this WARNING, in fact, related to that patch? Is the 'fix' for the warning the inclusion of that patch? Or, is there a kernel boot option needed? -- To unsubscribe, e-mail: opensuse-virtual+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-virtual+owner@opensuse.org