, May 16, 2013 10:50 AM
To: edk2-devel@lists.sourceforge.net
Subject: Re: [edk2] Memory reserved using EfiRuntimeServicesData and IOMMU
Hi Sathya,
To your question, no. Most of memory region reserved as
EfiRuntimeServicesData will NOT be reported in RMRR table.
VT-d spec:
" BIOS allo
Hi Sathya,
To your question, no. Most of memory region reserved as
EfiRuntimeServicesData will NOT be reported in RMRR table.
VT-d spec:
" BIOS allocated reserved memory ranges that may be DMA
targets. BIOS may report each such reserved memory region through the RMRR
structures, along
with t
>> Thanks
>> Sathya
>>
>> From: Kinney, Michael D [mailto:michael.d.kin...@intel.com]
>> Sent: Wednesday, May 15, 2013 7:05 PM
>> To: edk2-devel@lists.sourceforge.net; Kinney, Michael D
>> Subject: Re: [edk2] Memory reserved using EfiRuntimeServicesData a
orySpaceAttributes?
>
>
> Thanks
> Sathya
>
> From: Kinney, Michael D [mailto:michael.d.kin...@intel.com]
> Sent: Wednesday, May 15, 2013 7:05 PM
> To: edk2-devel@lists.sourceforge.net; Kinney, Michael D
> Subject: Re: [edk2] Memory reserved using EfiRuntimeServicesData
From: Kinney, Michael D [mailto:michael.d.kin...@intel.com]
Sent: Wednesday, May 15, 2013 7:05 PM
To: edk2-devel@lists.sourceforge.net; Kinney, Michael D
Subject: Re: [edk2] Memory reserved using EfiRuntimeServicesData and IOMMU
Sathya,
In general, this technique can be problematic. UEFI Drivers are
Fish [mailto:af...@apple.com]
Sent: Wednesday, May 15, 2013 4:15 PM
To: edk2-devel@lists.sourceforge.net
Subject: Re: [edk2] Memory reserved using EfiRuntimeServicesData and IOMMU
Did you mark the memory region as EFI_MEMORY_RUNTIME. This should force the OS
to give you a kernel virtual address
ress is reserved
> (from memory map) and faults the access from my OS driver.
>
> Thanks
> Sathya
>
> From: Chip Ueltschey [mailto:chipj...@gmail.com]
> Sent: Wednesday, May 15, 2013 4:16 PM
> To: edk2-devel@lists.sourceforge.net
> Subject: Re: [edk2] Memory reserved
address is reserved (from
memory map) and faults the access from my OS driver.
Thanks
Sathya
From: Chip Ueltschey [mailto:chipj...@gmail.com]
Sent: Wednesday, May 15, 2013 4:16 PM
To: edk2-devel@lists.sourceforge.net
Subject: Re: [edk2] Memory reserved using EfiRuntimeServicesData and IOMMU
Sathya
t; Thanks
> Sathya
>
> -Original Message-
> From: Prakash, Sathya [mailto:sathya.prak...@lsi.com]
> Sent: Tuesday, May 14, 2013 10:17 AM
> To: edk2-devel@lists.sourceforge.net
> Subject: [edk2] Memory reserved using EfiRuntimeServicesData and IOMMU
>
> Folks,
> We all
[mailto:sathya.prak...@lsi.com]
Sent: Tuesday, May 14, 2013 10:17 AM
To: edk2-devel@lists.sourceforge.net
Subject: [edk2] Memory reserved using EfiRuntimeServicesData and IOMMU
Folks,
We allocate some host memory as EfiRuntimeServicesData and utilize the memory
in host driver for a certain purpose
Folks,
We allocate some host memory as EfiRuntimeServicesData and utilize the memory
in host driver for a certain purpose. This works fine with normal cases, but
will it work with IOMMU?. I see the IOMMU module in linux needs to know about
the reserved regions through RMRR address table to map t
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