Hi Yoshinoya, The MP Services UEFI protocol has been used to run the CPUID instructions on a given CPU core and to read / write the MSRs from given CPU core. The python functions for this purpose are supported from the edk2module built in extension module are respectively cpuid_ex, rdmsr_ex/ wrmsr_ex with the function signatures as given below.
cupid_ex has the following signature cpuid_ex(cpu, eax, ecx) -> (eax:ebx:ecx:edx) rdmsr_ex(cpu, msr) -> (lower_32bits, higher_32bits) wrmsr_ex(cpu, msr, lower_32bits, higher_32bits) -> None where the cpu parameter refers to the cpu core number starting from 0, 0 being BSP. The usage instructions and code sample are not yet updated in the wiki. I can add more details at the earliest. Please use the edk2-libc discussions page for any further questions / discussions. https://github.com/tianocore/edk2-libc/discussions Regards, JP From: Yoshinoya <[email protected]> Sent: Monday, February 17, 2025 4:43 PM To: [email protected]; Jayaprakash, N <[email protected]> Cc: Kinney, Michael D <[email protected]>; [email protected] Subject: Re:Re: [edk2-devel] Python-3.6.8 UEFI : fork support hi, JP Got it, thank you! I found some uefi mp service functions's call sample in edk2module.c So, user could follow this sample and write multi process sample with python script ? best wishes, At 2025-02-17 13:23:58, "Jayaprakash, N via groups.io" <[email protected]<mailto:[email protected]>> wrote: Hi Yoshinoya, It's not supported in UEFI. You can see that macros are not defined as part of pyconfig.h https://github.com/tianocore/edk2-libc/blob/master/AppPkg/Applications/Python/Python-3.6.8/PyMod-3.6.8/Include/pyconfig.h So this functionality doesn't get compiled for UEFI. Regards, JP From: Yoshinoya <[email protected]<mailto:[email protected]>> Sent: Monday, February 17, 2025 8:19 AM To: Kinney, Michael D <[email protected]<mailto:[email protected]>>; [email protected]<mailto:[email protected]>; [email protected]<mailto:[email protected]>; Jayaprakash, N <[email protected]<mailto:[email protected]>> Subject: [edk2-devel] Python-3.6.8 UEFI : fork support Hi, Michael I am studying Python368 uefi code. I have a question, ask for help. I found some marco defines in edk2module.c "HAVE_FORK / HAVE_FORK1 / HAVE_SPAWNV / etc" It seems about multi-thread support functions, so my question is: 1. Have these functions been tested on uefi shell environments? 2. Are there any code samples for study how to use them? Thank you very much. best wishes, -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#121128): https://edk2.groups.io/g/devel/message/121128 Mute This Topic: https://groups.io/mt/111225588/21656 Group Owner: [email protected] Unsubscribe: https://edk2.groups.io/g/devel/unsub [[email protected]] -=-=-=-=-=-=-=-=-=-=-=-
