/dev/sev*: No such file or directory

[yangni2017]

kernel: 5.10.0-60.18 cpu:Hygon C86 7265 24-core Processor

I has enable the sev but i also get the error: # ll /dev/sev ls: cannot access '/dev/sev': No such file or directory

I also check config,someting look well: # dmesg -T | grep SEV [Wed Oct 11 10:36:17 2023] SEV supported

# dmesg -T | grep SME [Wed Oct 11 10:36:12 2023] AMD Memory Encryption Features active: SME

# cat /proc/cmdline BOOT_IMAGE=/vmlinuz-5.10.0-60.18.0.50.oe2203.x86_64 root=/dev/mapper/topos-root ro resume=/dev/mapper/topos-swap rd.lvm.lv=topos/root rd.lvm.lv=topos/swap selinux=0 intel_iommu=on loglevel=3 intel_idle.max_cstate=0 processor.max_cstate=1 idle=poll crashkernel=512M mem_encrypt=on kvm_amd.sev=1

# lsmod | grep kvm kvm_amd 122880 316 ccp 114688 1 kvm_amd kvm 958464 1 kvm_amd irqbypass 16384 646 vfio_pci,kvm

# cat /sys/module/kvm_amd/parameters/sev 1

so why I can't get the dev of sev?

other info: # lspci -nn 00:00.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Root Complex [1d94:1450] 00:00.2 IOMMU [0806]: Chengdu Haiguang IC Design Co., Ltd. I/O Memory Management Unit [1d94:1451] 00:01.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 00:01.1 PCI bridge [0604]: Chengdu Haiguang IC Design Co., Ltd. PCIE GPP Bridge [1d94:1453] 00:02.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 00:03.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 00:04.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 00:07.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 00:07.1 PCI bridge [0604]: Chengdu Haiguang IC Design Co., Ltd. Internal PCIe GPP Bridge 0 to Bus B [1d94:1454] 00:08.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 00:08.1 PCI bridge [0604]: Chengdu Haiguang IC Design Co., Ltd. Internal PCIe GPP Bridge 0 to Bus B [1d94:1454] 00:14.0 SMBus [0c05]: Chengdu Haiguang IC Design Co., Ltd. FCH SMBus Controller [1d94:790b] (rev 59) 00:14.3 ISA bridge [0601]: Chengdu Haiguang IC Design Co., Ltd. FCH LPC Bridge [1d94:790e] (rev 51) 00:18.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 0 [1d94:1460] 00:18.1 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 1 [1d94:1461] 00:18.2 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 2 [1d94:1462] 00:18.3 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 3 [1d94:1463] 00:18.4 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 4 [1d94:1464] 00:18.5 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 5 [1d94:1465] 00:18.6 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 6 [1d94:1466] 00:18.7 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 7 [1d94:1467] 00:19.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 0 [1d94:1460] 00:19.1 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 1 [1d94:1461] 00:19.2 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 2 [1d94:1462] 00:19.3 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 3 [1d94:1463] 00:19.4 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 4 [1d94:1464] 00:19.5 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 5 [1d94:1465] 00:19.6 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 6 [1d94:1466] 00:19.7 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 7 [1d94:1467] 00:1a.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 0 [1d94:1460] 00:1a.1 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 1 [1d94:1461] 00:1a.2 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 2 [1d94:1462] 00:1a.3 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 3 [1d94:1463] 00:1a.4 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 4 [1d94:1464] 00:1a.5 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 5 [1d94:1465] 00:1a.6 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 6 [1d94:1466] 00:1a.7 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 7 [1d94:1467] 00:1b.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 0 [1d94:1460] 00:1b.1 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 1 [1d94:1461] 00:1b.2 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 2 [1d94:1462] 00:1b.3 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 3 [1d94:1463] 00:1b.4 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 4 [1d94:1464] 00:1b.5 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 5 [1d94:1465] 00:1b.6 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 6 [1d94:1466] 00:1b.7 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 7 [1d94:1467] 00:1c.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 0 [1d94:1460] 00:1c.1 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 1 [1d94:1461] 00:1c.2 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 2 [1d94:1462] 00:1c.3 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 3 [1d94:1463] 00:1c.4 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 4 [1d94:1464] 00:1c.5 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 5 [1d94:1465] 00:1c.6 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 6 [1d94:1466] 00:1c.7 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 7 [1d94:1467] 00:1d.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 0 [1d94:1460] 00:1d.1 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 1 [1d94:1461] 00:1d.2 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 2 [1d94:1462] 00:1d.3 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 3 [1d94:1463] 00:1d.4 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 4 [1d94:1464] 00:1d.5 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 5 [1d94:1465] 00:1d.6 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 6 [1d94:1466] 00:1d.7 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 7 [1d94:1467] 00:1e.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 0 [1d94:1460] 00:1e.1 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 1 [1d94:1461] 00:1e.2 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 2 [1d94:1462] 00:1e.3 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 3 [1d94:1463] 00:1e.4 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 4 [1d94:1464] 00:1e.5 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 5 [1d94:1465] 00:1e.6 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 6 [1d94:1466] 00:1e.7 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 7 [1d94:1467] 00:1f.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 0 [1d94:1460] 00:1f.1 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 1 [1d94:1461] 00:1f.2 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 2 [1d94:1462] 00:1f.3 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 3 [1d94:1463] 00:1f.4 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 4 [1d94:1464] 00:1f.5 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 5 [1d94:1465] 00:1f.6 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 6 [1d94:1466] 00:1f.7 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Data Fabric: Device 18h; Function 7 [1d94:1467] 01:00.0 PCI bridge [0604]: ASPEED Technology, Inc. AST1150 PCI-to-PCI Bridge [1a03:1150] (rev 04) 02:00.0 VGA compatible controller [0300]: ASPEED Technology, Inc. ASPEED Graphics Family [1a03:2000] (rev 41) 03:00.0 Non-Essential Instrumentation [1300]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Function [1d94:145a] 03:00.2 Encryption controller [1080]: Chengdu Haiguang IC Design Co., Ltd. PSPCCP Command DMA Processor [1d94:1456] 03:00.3 USB controller [0c03]: Chengdu Haiguang IC Design Co., Ltd. USB 3.0 Host controller [1d94:145f] 04:00.0 Non-Essential Instrumentation [1300]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Function [1d94:1455] 04:00.1 Encryption controller [1080]: Chengdu Haiguang IC Design Co., Ltd. NTBCCP [1d94:1468] 04:00.2 SATA controller [0106]: Chengdu Haiguang IC Design Co., Ltd. FCH SATA Controller [AHCI mode] [1d94:7901] (rev 51) 10:00.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Root Complex [1d94:1450] 10:00.2 IOMMU [0806]: Chengdu Haiguang IC Design Co., Ltd. I/O Memory Management Unit [1d94:1451] 10:01.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 10:01.1 PCI bridge [0604]: Chengdu Haiguang IC Design Co., Ltd. PCIE GPP Bridge [1d94:1453] 10:02.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 10:03.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 10:04.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 10:07.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 10:07.1 PCI bridge [0604]: Chengdu Haiguang IC Design Co., Ltd. Internal PCIe GPP Bridge 0 to Bus B [1d94:1454] 10:08.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 10:08.1 PCI bridge [0604]: Chengdu Haiguang IC Design Co., Ltd. Internal PCIe GPP Bridge 0 to Bus B [1d94:1454] 11:00.0 RAID bus controller [0104]: Broadcom / LSI MegaRAID SAS-3 3108 [Invader] [1000:005d] (rev 02) 12:00.0 Non-Essential Instrumentation [1300]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Function [1d94:145a] 12:00.2 Encryption controller [1080]: Chengdu Haiguang IC Design Co., Ltd. PSPCCP Command DMA Processor [1d94:1456] 12:00.3 USB controller [0c03]: Chengdu Haiguang IC Design Co., Ltd. USB 3.0 Host controller [1d94:145f] 13:00.0 Non-Essential Instrumentation [1300]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Function [1d94:1455] 13:00.1 Encryption controller [1080]: Chengdu Haiguang IC Design Co., Ltd. NTBCCP [1d94:1468] 13:00.2 SATA controller [0106]: Chengdu Haiguang IC Design Co., Ltd. FCH SATA Controller [AHCI mode] [1d94:7901] (rev 51) 20:00.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Root Complex [1d94:1450] 20:00.2 IOMMU [0806]: Chengdu Haiguang IC Design Co., Ltd. I/O Memory Management Unit [1d94:1451] 20:01.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 20:02.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 20:03.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 20:03.1 PCI bridge [0604]: Chengdu Haiguang IC Design Co., Ltd. PCIE GPP Bridge [1d94:1453] 20:04.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 20:07.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 20:07.1 PCI bridge [0604]: Chengdu Haiguang IC Design Co., Ltd. Internal PCIe GPP Bridge 0 to Bus B [1d94:1454] 20:08.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 20:08.1 PCI bridge [0604]: Chengdu Haiguang IC Design Co., Ltd. Internal PCIe GPP Bridge 0 to Bus B [1d94:1454] 21:00.0 Ethernet controller [0200]: Intel Corporation Ethernet Controller X710 for 10GbE SFP+ [8086:1572] (rev 02) 21:00.1 Ethernet controller [0200]: Intel Corporation Ethernet Controller X710 for 10GbE SFP+ [8086:1572] (rev 02) 21:00.2 Ethernet controller [0200]: Intel Corporation Ethernet Controller X710 for 10GbE SFP+ [8086:1572] (rev 02) 21:00.3 Ethernet controller [0200]: Intel Corporation Ethernet Controller X710 for 10GbE SFP+ [8086:1572] (rev 02) 23:00.0 Non-Essential Instrumentation [1300]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Function [1d94:145a] 23:00.2 Encryption controller [1080]: Chengdu Haiguang IC Design Co., Ltd. PSPCCP Command DMA Processor [1d94:1456] 24:00.0 Non-Essential Instrumentation [1300]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Function [1d94:1455] 24:00.1 Encryption controller [1080]: Chengdu Haiguang IC Design Co., Ltd. NTBCCP [1d94:1468] 30:00.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Root Complex [1d94:1450] 30:00.2 IOMMU [0806]: Chengdu Haiguang IC Design Co., Ltd. I/O Memory Management Unit [1d94:1451] 30:01.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 30:02.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 30:03.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 30:03.3 PCI bridge [0604]: Chengdu Haiguang IC Design Co., Ltd. PCIE GPP Bridge [1d94:1453] 30:04.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 30:07.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 30:07.1 PCI bridge [0604]: Chengdu Haiguang IC Design Co., Ltd. Internal PCIe GPP Bridge 0 to Bus B [1d94:1454] 30:08.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 30:08.1 PCI bridge [0604]: Chengdu Haiguang IC Design Co., Ltd. Internal PCIe GPP Bridge 0 to Bus B [1d94:1454] 31:00.0 Ethernet controller [0200]: Intel Corporation I350 Gigabit Network Connection [8086:1521] (rev 01) 31:00.1 Ethernet controller [0200]: Intel Corporation I350 Gigabit Network Connection [8086:1521] (rev 01) 33:00.0 Non-Essential Instrumentation [1300]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Function [1d94:145a] 33:00.2 Encryption controller [1080]: Chengdu Haiguang IC Design Co., Ltd. PSPCCP Command DMA Processor [1d94:1456] 34:00.0 Non-Essential Instrumentation [1300]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Function [1d94:1455] 34:00.1 Encryption controller [1080]: Chengdu Haiguang IC Design Co., Ltd. NTBCCP [1d94:1468] 40:00.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Root Complex [1d94:1450] 40:00.2 IOMMU [0806]: Chengdu Haiguang IC Design Co., Ltd. I/O Memory Management Unit [1d94:1451] 40:01.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 40:02.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 40:03.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 40:04.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 40:07.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 40:07.1 PCI bridge [0604]: Chengdu Haiguang IC Design Co., Ltd. Internal PCIe GPP Bridge 0 to Bus B [1d94:1454] 40:08.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 40:08.1 PCI bridge [0604]: Chengdu Haiguang IC Design Co., Ltd. Internal PCIe GPP Bridge 0 to Bus B [1d94:1454] 41:00.0 Non-Essential Instrumentation [1300]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Function [1d94:145a] 41:00.2 Encryption controller [1080]: Chengdu Haiguang IC Design Co., Ltd. PSPCCP Command DMA Processor [1d94:1456] 41:00.3 USB controller [0c03]: Chengdu Haiguang IC Design Co., Ltd. USB 3.0 Host controller [1d94:145f] 42:00.0 Non-Essential Instrumentation [1300]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Function [1d94:1455] 42:00.1 Encryption controller [1080]: Chengdu Haiguang IC Design Co., Ltd. NTBCCP [1d94:1468] 42:00.2 SATA controller [0106]: Chengdu Haiguang IC Design Co., Ltd. FCH SATA Controller [AHCI mode] [1d94:7901] (rev 51) 50:00.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Root Complex [1d94:1450] 50:00.2 IOMMU [0806]: Chengdu Haiguang IC Design Co., Ltd. I/O Memory Management Unit [1d94:1451] 50:01.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 50:02.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 50:03.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 50:04.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 50:07.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 50:07.1 PCI bridge [0604]: Chengdu Haiguang IC Design Co., Ltd. Internal PCIe GPP Bridge 0 to Bus B [1d94:1454] 50:08.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 50:08.1 PCI bridge [0604]: Chengdu Haiguang IC Design Co., Ltd. Internal PCIe GPP Bridge 0 to Bus B [1d94:1454] 51:00.0 Non-Essential Instrumentation [1300]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Function [1d94:145a] 51:00.2 Encryption controller [1080]: Chengdu Haiguang IC Design Co., Ltd. PSPCCP Command DMA Processor [1d94:1456] 51:00.3 USB controller [0c03]: Chengdu Haiguang IC Design Co., Ltd. USB 3.0 Host controller [1d94:145f] 52:00.0 Non-Essential Instrumentation [1300]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Function [1d94:1455] 52:00.1 Encryption controller [1080]: Chengdu Haiguang IC Design Co., Ltd. NTBCCP [1d94:1468] 52:00.2 SATA controller [0106]: Chengdu Haiguang IC Design Co., Ltd. FCH SATA Controller [AHCI mode] [1d94:7901] (rev 51) 60:00.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Root Complex [1d94:1450] 60:00.2 IOMMU [0806]: Chengdu Haiguang IC Design Co., Ltd. I/O Memory Management Unit [1d94:1451] 60:01.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 60:02.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 60:03.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 60:04.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 60:07.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 60:07.1 PCI bridge [0604]: Chengdu Haiguang IC Design Co., Ltd. Internal PCIe GPP Bridge 0 to Bus B [1d94:1454] 60:08.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 60:08.1 PCI bridge [0604]: Chengdu Haiguang IC Design Co., Ltd. Internal PCIe GPP Bridge 0 to Bus B [1d94:1454] 61:00.0 Non-Essential Instrumentation [1300]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Function [1d94:145a] 61:00.2 Encryption controller [1080]: Chengdu Haiguang IC Design Co., Ltd. PSPCCP Command DMA Processor [1d94:1456] 62:00.0 Non-Essential Instrumentation [1300]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Function [1d94:1455] 62:00.1 Encryption controller [1080]: Chengdu Haiguang IC Design Co., Ltd. NTBCCP [1d94:1468] 70:00.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. Root Complex [1d94:1450] 70:00.2 IOMMU [0806]: Chengdu Haiguang IC Design Co., Ltd. I/O Memory Management Unit [1d94:1451] 70:01.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 70:02.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 70:03.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 70:04.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 70:07.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 70:07.1 PCI bridge [0604]: Chengdu Haiguang IC Design Co., Ltd. Internal PCIe GPP Bridge 0 to Bus B [1d94:1454] 70:08.0 Host bridge [0600]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Host Bridge [1d94:1452] 70:08.1 PCI bridge [0604]: Chengdu Haiguang IC Design Co., Ltd. Internal PCIe GPP Bridge 0 to Bus B [1d94:1454] 71:00.0 Non-Essential Instrumentation [1300]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Function [1d94:145a] 71:00.2 Encryption controller [1080]: Chengdu Haiguang IC Design Co., Ltd. PSPCCP Command DMA Processor [1d94:1456] 72:00.0 Non-Essential Instrumentation [1300]: Chengdu Haiguang IC Design Co., Ltd. PCIe Dummy Function [1d94:1455] 72:00.1 Encryption controller [1080]: Chengdu Haiguang IC Design Co., Ltd. NTBCCP [1d94:1468]

[tlendacky]

I don't believe Hygon CPUs support SEV.

[yangni2017]

I don't believe Hygon CPUs support SEV.

I am sure it support sev. It seem base on amd cpu, the dmesg will get the results: # dmesg -T | grep SEV [Wed Oct 11 10:36:17 2023] SEV supported

[tlendacky]

SEV also requires specific PSP support. Please include the output of: dmesg | grep -i -E "ccp|SEV"

[yangni2017]

SEV also requires specific PSP support. Please include the output of: dmesg | grep -i -E "ccp|SEV"

ccp seems has not output.

# dmesg | grep -i -E "ccp|SEV" [ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-5.10.0-60.18.0.50.oe2203.x86_64 root=/dev/mapper/topos-root ro resume=/dev/mapper/topos-swap rd.lvm.lv=topos/root rd.lvm.lv=topos/swap selinux=0 intel_iommu=on loglevel=3 intel_idle.max_cstate=0 processor.max_cstate=1 idle=poll crashkernel=512M mem_encrypt=on kvm_amd.sev=1 [ 0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz-5.10.0-60.18.0.50.oe2203.x86_64 root=/dev/mapper/topos-root ro resume=/dev/mapper/topos-swap rd.lvm.lv=topos/root rd.lvm.lv=topos/swap selinux=0 intel_iommu=on loglevel=3 intel_idle.max_cstate=0 processor.max_cstate=1 idle=poll crashkernel=512M mem_encrypt=on kvm_amd.sev=1 [ 5.722549] SEV supported

[tlendacky]

So no CCP/PSP driver messages, which means that SEV cannot be supported. The CPUID may have it advertised, but you need to be able to communicate with the PSP and the PSP must have the necessary firmware. You'll need to work with Hygon on this.

[yangni2017]

So no CCP/PSP driver messages, which means that SEV cannot be supported. The CPUID may have it advertised, but you need to be able to communicate with the PSP and the PSP must have the necessary firmware. You'll need to work with Hygon on this.

thanks very much. I want to know how can i do to support CCP/PSP? I not found on bios just now. which need hardware supoort or i can update bios to support?

[tlendacky]

No idea. You need to work with Hygon and their developers to support this, if possible.

[yangni2017]

No idea. You need to work with Hygon and their developers to support this, if possible.

ok, thank you.