Hi Arun... :) On Wed, Jul 11, 2012 at 6:01 PM, Arun KS <getarunks@xxxxxxxxx> wrote: > I went ahead and made my __log_buf size to 1MB. > But the memory is not aligned to 1MB boundary. Here is what system.map shows. > > c08ac400 b __warned.32427 > c08ac404 b __log_buf > c09ac404 B console_set_on_cmdline > c09ac408 b idle_notifier > c09ac40c B sys_tz > > so __log_buf resides in two 1M sections in parts and it needs two PTEs. > > Then I added __aligned__(1024*1024) attribute to __log_buf array. > This time compiler error "Error: alignment too large: 15 assumed" > > But __aligned_(32*1024) is working fine as below > > c08b84c0 b __warned.32427 > c08c0000 b __log_buf > c09c0000 B console_set_on_cmdline > c09c8000 b idle_notifier > c09c8004 B sys_tz > > Is it not possible to align more than 32KB? > Any pointers? when you said alignment, I quickly google and found this gcc page: http://gcc.gnu.org/onlinedocs/gcc-3.2/gcc/Type-Attributes.html to be honest, what went wrong here.... I guessed you need to check the linker script...maybe something must be changed there. -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
