From: Michael Zimmermann <sigmaepsilon92@gmail.com>
To: "edk2-devel@lists.01.org" <edk2-devel@ml01.01.org>,
Laszlo Ersek <lersek@redhat.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Leif Lindholm <leif.lindholm@linaro.org>,
Yonghong Zhu <yonghong.zhu@intel.com>,
Liming Gao <liming.gao@intel.com>
Subject: visibility pf PcdSet
Date: Mon, 20 Mar 2017 17:06:48 +0100 [thread overview]
Message-ID: <CAN9vWDJhYWarrabhGbEcY3L_R0hc_SAR4GWUrwBt=kUWgiQaZA@mail.gmail.com> (raw)
Do I understand correctly, that a PcdSet on a 'PcdsPatchableInModule'
is only visible to the current module?(SEC, driver, application, ...)
Because I've tested this and a PcdSet on
gArmTokenSpaceGuid.PcdSystemMemoryBase inisde PrePi is not visible
inside a DXE_DRIVER - which means that for everyone else the value is
still 0x0.
If this is the case and I don't have some platform bug, then there is
probably a bug in ArmVirtPkg's HighMemDxe where this Pcd is used in a
DXE_DRIVER:
https://github.com/tianocore/edk2/blob/76874be3d411bf8daac051718e20932e0bf97d70/ArmVirtPkg/HighMemDxe/HighMemDxe.c#L70
It doesn't cause anything bad but it would show 'Failed to add System
RAM @ START - END (Access Denied)' after calling AddMemorySpace for
memory which has already been registered.
Thanks
Michael
next reply other threads:[~2017-03-20 16:06 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-20 16:06 Michael Zimmermann [this message]
2017-03-20 16:17 ` visibility pf PcdSet Laszlo Ersek
2017-03-20 18:19 ` Ard Biesheuvel
2017-03-20 18:37 ` Michael Zimmermann
2017-03-21 2:23 ` Gao, Liming
2017-03-21 7:09 ` Ard Biesheuvel
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