: dma_alloc_coherent not allocating memory from CMA Reserved
To : Sathyavathi M, null
On 2020-09-23 08:43, Sathyavathi M wrote:
> Hi All,
>
> I am trying to allocate coherent memory for 33 MB in kerenl driver. and for that
> i have reserved CMA of 1024 MB, but from dmesg, i can see
Hi All,
I am trying to allocate coherent memory for 33 MB in kerenl driver. and for that i have reserved CMA of 1024 MB, but from dmesg, i can see that address reserved for cma is different and what i get with dma_alloc_coherent is different. My pc is intel x86 machine and tried in
-
Sender : Christoph Hellwig
Date : 2019-06-26 12:28 (GMT+5:30)
Title : Re: CMA in AMD IOMMU driver
To : Sathyavathi M
CC : null
Toms conversion of the AMD IOMMU driver to use dma-iommu adds CMA
support :)
Regards,
Sathya
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Sender : Sathyavathi M Engineer/Host Software
/SSIR/Samsung Electronics
Date : 2019-06-26 15:21 (GMT+5:30)
Title : RE: Re: CMA in AMD IOMMU driver
To : null
CC : null
Dear Christoph,
Thanks for the reply.
can you please let me know which kernel has it?
Thanks,
Sathya
Dear Christoph,
Thanks for the reply.
can you please let me know which kernel has it?
Thanks,
Sathya
- Original Message -
Sender : Christoph Hellwig
Date : 2019-06-26 12:28 (GMT+5:30)
Title : Re: CMA in AMD IOMMU driver
To : Sathyavathi M
CC : null
Toms conversion
Dear All,
This mail regarding the below communication about CMA in AMD IOMMU driver.
On Mon, Feb 02, 2015 at 10:35:36AM -0700, Alex Williamson wrote:
> [cc +joerg]
>
> On Mon, 2015-02-02 at 11:01 -0500, Mark Hounschell wrote:
> > From what I understand of CMA, and it seems provable to me, is
