Re: How to alloc_pages from a given physical memory?

On 06.07.2017 05:08, kipade wrote: > Here I want to allocate a block of shared memory from a given physical > address, such as 0x9000, 6M. However, alloc_pages can't fit this > point. I had reserved enugh pages via cmem, there also have enough > continous pages for such allocation

Re: How to alloc_pages from a given physical memory?

cortex A15, omap5 platform 在 2017年07月06日 17:30, Kamil Konieczny wrote: > > On 06.07.2017 11:04, kipade wrote: >> I use arm 32bit cpu, with kernel 3.14 > banana-pi ? nano-pi ? orange-pi ? odroid ? > > Is it memory region for system registers ? > >>> On 06.07.2017 05:08, kipade wrote: Here I

Re: How to alloc_pages from a given physical memory?

In fact, I want to allocate a continous of pages from a given physical address for a shm object in shmem_file_setup, might i should write a customized shmem_file_setup2 for this? 在 2017年07月06日 17:30, Kamil Konieczny wrote: > > On 06.07.2017 11:04, kipade wrote: >> I use arm 32bit cpu, with

Re: How to alloc_pages from a given physical memory?

On 06.07.2017 11:43, kipade wrote: > In fact, I want to allocate a continous of pages from a given physical > address for a shm object in > > shmem_file_setup, might i should write a customized shmem_file_setup2 > for this? > I use arm 32bit cpu, with kernel 3.14 why do want this specific

Re: How to alloc_pages from a given physical memory?

I reserved such memory as cma range, and Im sure it can be allocated via cma, such as dma_alloc_writecombine*. I want to hard code the physical address because I have to make sure such address can be access by another ipu cores of the soc platform. I think this can be reserved via a generic

Re: How to alloc_pages from a given physical memory?

I use arm 32bit cpu, with kernel 3.14 在 2017年07月06日 16:53, Kamil Konieczny wrote: > > On 06.07.2017 05:08, kipade wrote: >> Here I want to allocate a block of shared memory from a given physical >> address, such as 0x9000, 6M. However, alloc_pages can't fit this >> point. I had reserved enugh

Re: How to alloc_pages from a given physical memory?

On 06.07.2017 12:20, kipade wrote: > [...] (I have a look at> the kerrnel source, every omap_bo_object [...] > [...] I use arm 32bit cpu, with kernel 3.14 > Here I want to allocate a block of shared memory from a given physical > address, such as 0x9000, 6M. [...] it is well beyond

Re: How to alloc_pages from a given physical memory?

On 06.07.2017 11:04, kipade wrote: > I use arm 32bit cpu, with kernel 3.14 banana-pi ? nano-pi ? orange-pi ? odroid ? Is it memory region for system registers ? >> On 06.07.2017 05:08, kipade wrote: >>> Here I want to allocate a block of shared memory from a given physical >>> address, such

Eudyptula Challenge scripts not responding?

Hi all, The Eudyptula Challenge scripts seem to not be responding these past few days. if anybody here is involved behind the scenes, would you please take a look? Cheers, Laurence. ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org

Re: Eudyptula Challenge scripts not responding?

On Thu, Jul 6, 2017 at 4:04 PM, Laurence Rochfort wrote: > Hi all, > > The Eudyptula Challenge scripts seem to not be responding these past few > days. > > if anybody here is involved behind the scenes, would you please take a look? > > Cheers, > Laurence. > >

Re:Re: How to alloc_pages from a given physical memory?

Might be? I have no puzzle of CMem。 OK, I will continue go search solutions for that. And, if I got it, I will come back for sharing solutions here. And, thank you, all At 2017-07-06 19:17:45, "Kamil Konieczny" wrote: > > >On 06.07.2017 12:20, kipade wrote:

Re: How to alloc_pages from a given physical memory?

On 06.07.2017 15:43, kipade wrote: > Might be? I have no puzzle of CMem。 OK, I will continue go search solutions > for that. > And, if I got it, I will come back for sharing solutions here. > And, thank you, all Are you writing kernel module ? or you try to compile kernel with cmem module ?

Re: Eudyptula Challenge scripts not responding?

Thanks all. Yeah, I understand a judgement on a submission could take a while, but I wasn't getting an auto-response either. Looks like it was a mail routing issue on my side and I also got the subject format wrong. On Thu, 6 Jul 2017, 17:24 David Wittman, wrote: > That