On Tue, 2020-03-31 at 01:23:38 UTC, Alexey Kardashevskiy wrote:
> Unlike normal memory ("memory" compatible type in the FDT),
> the persistent memory ("ibm,pmemory" in the FDT) can be mapped anywhere
> in the guest physical space and it can be used for DMA.
>
> In order to maintain 1:1 mapping via
Alexey Kardashevskiy writes:
> Unlike normal memory ("memory" compatible type in the FDT),
> the persistent memory ("ibm,pmemory" in the FDT) can be mapped anywhere
> in the guest physical space and it can be used for DMA.
>
> In order to maintain 1:1 mapping via the huge DMA window, we need to
>
Alexey Kardashevskiy
> To: linuxppc-dev@lists.ozlabs.org
> Cc: Alexey Kardashevskiy , David Gibson
> , Michael Ellerman
> , Oliver O'Halloran , "Aneesh
> Kumar K . V" , Wen Xiong
> , Brian J King
> Subject: [EXTERNAL] [PATCH kernel] pow
I applied the patch on top of the latest upstream kernel. I ran HTX over pmem nodes for several hours and it works.
Tested-by: Wen Xiong
Thanks,
Wendy
- Original message -From: Alexey Kardashevskiy To: linuxppc-dev@lists.ozlabs.orgCc: Alexey Kardashevskiy , David Gibson , Michael Ellerm
Unlike normal memory ("memory" compatible type in the FDT),
the persistent memory ("ibm,pmemory" in the FDT) can be mapped anywhere
in the guest physical space and it can be used for DMA.
In order to maintain 1:1 mapping via the huge DMA window, we need to
know the maximum physical address at the
