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 ? What hardware are you using ? How are you allocating shmem ? Can you give few code lines for what you try ? The more info you give, more help you receive. Well, it may be faster to go directly to some kernel list or vendor list with your questions. >> 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 0x90000000, 6M. [...] >> >> it is well beyond newbie, you may find help on vendor forum, >> i guess it is TI (Texas Instruments) Sitara SoC, >> google search gives first hit: >> >> http://processors.wiki.ti.com/index.php/CMEM_Overview -- Best regards, Kamil Konieczny Samsung R&D Institute Poland _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies