Re: [PATCH v2] Revert "MIPS: make CAC_ADDR and UNCAC_ADDR account for PHYS_OFFSET"

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, Jun 26, 2013 at 03:43:35PM +0000, Leonid Yegoshin wrote:

> This is a precursor for EVA specs implementation on Aptiv cores.
> 
> EVA has different virtual address sets for kernel and user space and it can use memory on different physical address location. For exam, on Malta it can use a natural 0x80000000, one our customer put memory into 0x40000000 etc.

Hmm...  Any significant reduction below 2GB sounds like opening a can of
worms with address space layout assumption in some application code.

I guess they were desperately looking to increase kernel memory, highmem
didn't fit the bill nor going 64 bit so this was the solution?

  Ralf


[Index of Archives]     [Linux MIPS Home]     [LKML Archive]     [Linux ARM Kernel]     [Linux ARM]     [Linux]     [Git]     [Yosemite News]     [Linux SCSI]     [Linux Hams]

  Powered by Linux