RE: Problem in getting shared memory access on P1022RDK
From: Arshad, Farrukh <hidden>
Date: 2012-01-04 06:49:51
How can I verify if the memory mapped is coherent on both cores. My memory = partitioning is given below Core Base Address Size Core 0 0x0000,0000 0x1000,0000 --> CONFIG_PHYSICAL_START =3D bootm_low = =3D Base Address Core 1 0x1000,0000 0x0C00,0000 --> CONFIG_PHYSICAL_START =3D bootm_low = =3D Base Address Shared Mem 0x1C00,0000 0x0400,0000 Regards, Farrukh Arshad -----Original Message----- From: Scott Wood [mailto:scottwood@freescale.com]=20 Sent: Tuesday, January 03, 2012 10:10 PM To: Arshad, Farrukh Cc: linuxppc-dev@lists.ozlabs.org Subject: Re: Problem in getting shared memory access on P1022RDK On 01/03/2012 03:42 AM, Arshad, Farrukh wrote:
Adding more to it, =20 =20 =20 When I write from Core 1 on the shared memory region it is visible at=20 Core 0 and it can read what I have written from Core 1 but when I=20 write from Core 0 on this shared memory it is not visible on Core 1.
Is the memory mapped coherent on both cores? -Scott