I found CSR MISA information about the 5 hart’s here: And unlike the U74 (Machine,Supervisor,User mode) it does not have a Supervisory mode just like a S76 Core. So I do still think that it is really an S76 core, without any form of floating point support ( FD), without support for Bit Manipulation specifically not Zba and not Zbb (B), with a smaller cache L1 I-Cache, with a smaller Data TIM instead of a Data cache and without a Instruction TIM (basically remove everything so that much less space on the silicon die, and less power, is required). Travelling all the way back in time to, there was no option to license a S7 Core from SiFive, but there was a S7 Series S76 Core. And I see S76 mentioned in more and more places with regard to the U74-mc. I do not know if it is possible, but what would be fantastic is if the exact same features were listed in all the dts files for each of the six cores in the JH7110 SoC E24,U74-mc(S76+4xU74)Īn S76 is technically a S7-series RISC-V core, just like a U74 is technically a U7-series core. A S76 core only has machine mode and by default a user mode, it has no supervisor mode, so it is different than the U74 cores anyhow. with less features than a baseline S76 core (rv64imafdc_zba_zbb), with support for single and double precision floating point removed and bit Manipulation it would become rv64imac. I’m now wondering is it a cut S76 core with no floating point, i.e. Table 1.I would have expected a kernel to report back exactly whatever it was told to report back from the dts files (regardless if it is accurate or wrong).įor the visionfive2_upstream kernel I would have expected rv64imac_zba_zbb for the S7 hart (which might be a S76 hart) and rv64imafdc_zba_zbb for the 4 U74 hart’s.Īnd in the U-boot upstream patch it has rv64imacu for the and rv64imafdcbsu for the U74 harts all of which are part of the u74-mc. Make sure that the Virtualization Technology (VT) is not disabled in your Computer’s BIOS (“How to Create Virtual Machines in Linux Using KVM,” n.d.). Only unsupported combination is 64-bit guest on a 32-bit host. Navigate to CPU technologies tab and check the value of Intel(R) virtualization technology will be either yes/no shows your CPU’s support for virtualization. If you have a Windows OS, you can still use ‘Oracle VM VirtualBox’ on which you can install your Linux OS where we can create KVMs and for such users, CPU virtualization can also be verified using ‘Intel(R) Processor ID Utility’. Sample Outputįlags : fpuvme de psetscmsrpaemce cx8 apicsepmtrrpgemcacmov pat pse36 clflushdtsacpi mmx fxsrsse sse2 ssht tm syscallnx lm constant_tscpni monitor ds_cplvmxest tm2 ssse3 cx16 xtprlahf_lm This command will return output like the one displayed below, if no output is displayed, then your CPU does not support virtualization, if the output has ‘vmx’ or ‘svm’ then your CPU supports hardware virtualization. You can verify if your CPU supports KVM by running the following command on terminal: ~]#egrep '(vmx|svm)' /proc/cpuinfo KVM will work only if the CPU has a support of hardware virtualization. The supported Operating Systems are: Linux, Windows, Solaris, Haiku, REACT OS and more.
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