Hi all,
I have managed to successfully install and use Jailhouse on an old x86 machine. However, I have recently got a relatively new intel Xeon machine that supports CAT etc so I want to test Jailhouse on that machine. The machine specs are given here HP Z4 G5 PTC certified, Intel Xeon W3-2435 SSD PCIe , NVIDIA RTX A4000 , Win10 Pro/Win (Xeon W, 64 GB, 1000 GB, SSD, GeForce RTX 4000 Ada) - digitec <https://www.digitec.ch/en/s1/product/hp-z4-g5-ptc-certified-intel-xeon-w3-2435-ssd-pcie-nvidia-rtx-a4000-win10-prowin-xeon-w-64-gb-1000-g-39689571> I have jailhouse installed on the system, however when I try to enable the root cell the system hangs. I have a serial console and the output on the serial console is as follows Initializing Jailhouse hypervisor v0.12 (342-gd6e64f90) on CPU 5 Code location: 0xfffffffff0000050 Using x2APIC Page pool usage after early setup: mem 135/32207, remap 0/131072 Initializing processors: CPU 5... the system hangs afterward and there is no more output on the serial port. I have traced the problem and it seems to be at this function call in jailhouse/hypervisor/arch/x86/setup.c write_msr(MSR_IA32_PAT, PAT_HOST_VALUE); the code never returns from this function when initializing the first processor and hangs. What might be the problem? The function is as follows static inline void write_msr(unsigned int msr, unsigned long val) { asm volatile("wrmsr" : /* no output */ : "c" (msr), "a" (val), "d" (val >> 32) : "memory"); } The problem seems to be in writing the MSR_IA32_PAT register. I have tried to write the same value I read from the register as well, e.g., cpu_data->pat = read_msr(MSR_IA32_PAT); write_msr(MSR_IA32_PAT, cpu_data->pat ); but the behavior is the same. Any insights on what can the problem be? -- You received this message because you are subscribed to the Google Groups "Jailhouse" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jailhouse-dev/24e28829-f60b-41b9-9c33-0b23156cc81en%40googlegroups.com.
