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devel+owner@edk2.groups.io Resent-Date: Thu, 15 May 2025 21:24:46 -0700 Resent-From: n.jayaprakash@intel.com Reply-To: devel@edk2.groups.io,n.jayaprakash@intel.com List-Unsubscribe-Post: List-Unsubscribe=One-Click List-Unsubscribe: X-Gm-Message-State: 4N5eiaTdpD8LmhLjSTvIWzdJx7686176AA= Content-Language: en-US Content-Type: multipart/alternative; boundary="_000_PH7PR11MB5943A234A7B29051A330B44FEE93APH7PR11MB5943namp_" X-GND-Status: LEGIT Authentication-Results: spool.mail.gandi.net; dkim=pass header.d=groups.io header.s=20240830 header.b=dzaKPqnK; dmarc=pass (policy=none) header.from=groups.io; spf=pass (spool.mail.gandi.net: domain of bounce@groups.io designates 45.79.224.7 as permitted sender) smtp.mailfrom=bounce@groups.io --_000_PH7PR11MB5943A234A7B29051A330B44FEE93APH7PR11MB5943namp_ Content-Type: text/plain; charset="iso-2022-jp" Content-Transfer-Encoding: quoted-printable That=1B$B!G=1B(Bs right I have also observed this, on Debug IFWI firmware i= t runs very slowly. It could be due to generation of lot of prints from the firmware as it is a= debug build. So, it is expected to be very slow. But on a release build of the firmware it works pretty quick and we don=1B$= B!G=1B(Bt notice the slowness as observed with the debug firmware. One option is to use the pre-compiled library files which are compiled to .= pyc files. So that Python interpreter boot strap process can run pretty fast. Regards, JP From: devel@edk2.groups.io On Behalf Of Yoshinoya vi= a groups.io Sent: Thursday, May 15, 2025 7:39 AM To: devel@edk2.groups.io; Jayaprakash, N Cc: Kinney, Michael D ; pedro.falcato@gmail.com Subject: Re: [edk2-devel] Python-3.6.8 UEFI : fork support Hi, JP I found an interesting test result. I ran shell python on qemu with debug version ovmf fd. I executed "python" command in shell environment, it ran slowly in the firs= t time. then i executed "quit(0" command in python interactive environ, and launche= d python again in shell environment. And it ran more slower than the first time. If i do the same test on quem with release version ovmf fd, and it's normal= . every time, i ran python in shell, and it ran quickly. I tried to run "python -v', and saved the output log, not find any obvious = exception. Is there any suggestion? best wishes, =1B$B:_=1B(B 2025-02-18 13:07:57=1B$B!$=1B(B"Yoshinoya" > =1B$B> wrote: Hi Yoshinoya, The MP Services UEFI protocol has been used to run the CPUID instructions o= n 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 bui= lt 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:ec= x: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 be= ing BSP. The usage instructions and code sample are not yet updated in the wiki. I c= an add more details at the earliest. Please use the edk2-libc discussions page for any further questions / discu= ssions. https://github.com/tianocore/edk2-libc/discussions Regards, JP From: Yoshinoya > Sent: Monday, February 17, 2025 4:43 PM To: devel@edk2.groups.io; Jayaprakash, N > Cc: Kinney, Michael D >; pedro.falcato@gmail.com 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 pytho= n script ? best wishes, At 2025-02-17 13:23:58, "Jayaprakash, N via groups.io" > wrote: Hi Yoshinoya, It=1B$B!G=1B(Bs not supported in UEFI. You can see that macros are not defined as part of pyconfig.h https://github.com/tianocore/edk2-libc/blob/master/AppPkg/Applications/Pyth= on/Python-3.6.8/PyMod-3.6.8/Include/pyconfig.h So this functionality doesn=1B$B!G=1B(Bt get compiled for UEFI. Regards, JP From: Yoshinoya > Sent: Monday, February 17, 2025 8:19 AM To: Kinney, Michael D >; pedro.falcato@gmail.com; devel@= edk2.groups.io; Jayaprakash, N > 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, -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#121346): https://edk2.groups.io/g/devel/message/121346 Mute This Topic: https://groups.io/mt/111225588/7686176 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [rebecca@openfw.io] -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- --_000_PH7PR11MB5943A234A7B29051A330B44FEE93APH7PR11MB5943namp_ Content-Type: text/html; charset="iso-2022-jp" Content-Transfer-Encoding: quoted-printable

That=1B$B!G=1B(Bs right I = have also observed this, on Debug IFWI firmware it runs very slowly.

It could be due to generat= ion of lot of prints from the firmware as it is a debug build.

So, it is expected to be v= ery slow.

 

But on a release build of = the firmware it works pretty quick and we don=1B$B!G=1B(Bt notice the slown= ess as observed with the debug firmware.

One option is to use the p= re-compiled library files which are compiled to .pyc files.

So that Python interpreter= boot strap process can run pretty fast.

 

Regards,=

JP

From: devel@edk2.groups.io <devel= @edk2.groups.io> On Behalf Of Yoshinoya via groups.io
Sent: Thursday, May 15, 2025 7:39 AM
To: devel@edk2.groups.io; Jayaprakash, N <n.jayaprakash@intel.com= >
Cc: Kinney, Michael D <michael.d.kinney@intel.com>; pedro.falc= ato@gmail.com
Subject: Re: [edk2-devel] Python-3.6.8 UEFI : fork support

 

Hi, JP

I found an interesting test result.=

I ran shell python on qemu with debug ve= rsion ovmf fd.

I executed "python" command in= shell environment, it ran slowly in the first time.

then i executed "quit(0" comma= nd in python interactive environ, and launched python again in shell enviro= nment.

And it ran more slower than the first ti= me.

 

If i do the same test on quem with relea= se version ovmf fd, and it's normal.

every time, i ran python in shell, and i= t ran quickly.

 

I tried to run "python -v', and sav= ed the output log, not find any obvious exception.

 

Is there any suggestion?

 

 

best wishes,

 

 

=1B$B:_=1B(B= 2025-02-18 13:07:57=1B$B!$=1B(B"Yoshinoya= " <yoshinoyatoko@163.com>= =1B$B

Hi, JP,

Thanks a lot!

 

best wishes,

 

 

 

At 2025-02-17 23:51:25, "Jayaprakash, N via groups.io&qu= ot; <n.jayaprakas= h=3Dintel.com@groups.io> wrote:

Hi Yoshinoya,

 

The MP Services UEFI protoco= l has been used to run the CPUID instructions on a given CPU core and to read / write the MSRs from given CPU core.<= span style=3D"font-size:10.5pt;font-family:"Arial",sans-serif;col= or:black">

The python functions for thi= s 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 s= ignature cpuid_ex(cp= u, 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 c= ode sample are not yet updated in the wiki. I can add more details at the earliest.

 

Please use the edk2-libc dis= cussions page for any further questions / discussions.

https://github.com/tianocore/edk2-libc/d= iscussions

 

Regards,=

JP

 

From: Yoshinoya <yoshinoyatoko@163.com>=
Sent: Monday, February 17, 2025 4:43 PM
To: devel@edk2.groups.io= ; Jayaprakash, N <n.jayapraka= sh@intel.com>
Cc: Kinney, Michael D <michael.d.kinney@intel.com>; pedro.falcato@gmail.com
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 wr= ite multi process sample with python script ? 

 

best wishes,

 

 

 

 

At 2025-02-17 13:23:58, "Jayaprakash, N via groups.io&qu= ot; <n.jayaprakas= h=3Dintel.com@groups.io> wrote:

Hi Yoshinoya,

 

It=1B$B!G=1B(Bs not supporte= d 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= =1B$B!G=1B(Bt get compiled for UEFI.

 

Regards,=

JP

 

From: Yoshinoya <yoshinoyatoko@163.com>=
Sent: Monday, February 17, 2025 8:19 AM
To: Kinney, Michael D <michael.d.kinney@intel.com>; pedro.falcato@gmail.com; devel@edk2.groups.io; Jayaprakash, N <n.jayaprakash@intel.com>
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 function= s, 

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.<= /o:p>

 

best wishes,

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