Hi Liming,
Yes, GetMemoryMap function sees that memory pointed by PhysicaAddress as free -
marked as EfiConventionalMemory -,
but when trying to allocate memory there, using the AllocatePages function, it
fails with EFI_NOT_FOUND status.
Here is the memory map I am retrieving:
PhysicalAddress NoOfPages
8000 80
59000 6
100000 3840
1100000 28416 131D0000 454 14610000 47600
20200000 130564
40005000 564399
100000000 189952
The problem appears when I try to allocate memory at 131D0000 address.
Thanks,
Sorin
________________________________
From: "Gao, Liming" <liming....@intel.com>
To: Sorin Vinturis <sorin.vintu...@yahoo.com>;
"edk2-devel@lists.sourceforge.net" <edk2-devel@lists.sourceforge.net>
Sent: Wednesday, 4 September 2013, 12:37
Subject: RE: [edk2] AllocatePages returns EFI_NOT_FOUND
Hi:
Allocation requests of Type AllocateAddress means allocate pages at the
address pointed to by Memory on input. If the requested pages could not be
found, EFI_NOT_FOUND will return.
For your issue, the memory described by PhysicalAddress should not be
available. So, EFI_NOT_FOUND returns. Do you mean that you call GetMemoryMap()
and see the memory pointed by PhysicalAddress is free? If yes, could you show
the free memory layout and PhysicalAddress value?
Thanks
Liming
From:Sorin Vinturis [mailto:sorin.vintu...@yahoo.com]
Sent: Wednesday, September 04, 2013 3:43 PM
To: edk2-devel@lists.sourceforge.net
Subject: [edk2] AllocatePages returns EFI_NOT_FOUND
Hi all,
I have an UEFI application in which I try to allocate memory of type
EfiBootServicesData, using the AllocatePages function. In order to find the
next available (unallocated) memory space - of type EfiConventionalMemory - I
use the GetMemoryMap function. The problem which I'm facing is that when I try
to allocate memory at one particular address, the AllocatePages function
returns EFI_NOT_FOUND. This issue happens every time, when the application is
executed, and at the exact memory address; for all remaining free memory blocks
the allocation performs without problems.
I am calling the allocation function as follows:
gBS->AllocatePages ( AllocateAddress, EfiBootServicesData, NumberOfPages,
&PhysicalAddress );
Is this scenario a memory access error?
How should I interpret this?
Thanks,
Sorin
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