It is not safe to call any EFI service from the AP, as they are not MP safe by
definition. So any C Lib function that that calls any system service is thus
not legal to use on the AP.
Thanks,
Andrew Fish
On Apr 23, 2013, at 8:51 AM, "Shalev, Tomer" <[email protected]> wrote:
> Hello,
>
> I wrote a small UEFI application that tests StartupThisAP() of Framework EFI
> MpService. There are two tests in the application. Test1 runs StartupThisAP()
> in blocking mode, and Test2 in non-blocking mode. Both tests pass, but…
>
> I noticed that if I call printf() (stdlib's printf) immediately following the
> call to StartupThisAP() in Test2 (see lines 176-177), then the application
> halts. It seems that the AP does not execute the procedure passed to
> StartupThisAP(), rather it jumps to some other code and enters infinite loop.
> I don't know if my usage is wrong or whether I hit some UEFI but, so I am
> asking your help in solving this issue.
>
> The password for the ZIP file that contains the source code of the package is
> 12345678.
>
> I would appreciate any help.
>
> Thanks,
> Tomer
> <MpTestPkg.zip>
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