• Christophe Leroy's avatar
    powerpc/8xx: Map 32Mb of RAM at init. · e4470bd6
    Christophe Leroy authored
    At the time being, initial MMU setup allows 24 Mbytes
    of DATA and 8 Mbytes of code.
    
    Some debug setup like CONFIG_KASAN generate huge
    kernels with text size over the 8M limit and data over the
    24 Mbytes limit.
    
    Here is an 8xx kernel compiled with CONFIG_KASAN_INLINE for
    one of my boards:
    
    [root@po16846vm linux-powerpc]# size -x vmlinux
       text	   data	    bss	    dec	    hex	filename
    0x111019c	0x41b0d4	0x490de0	26984528	19bc050	vmlinux
    
    This patch maps up to 32 Mbytes code based on _einittext symbol
    and allows 32 Mbytes of memory instead of 24.
    Signed-off-by: default avatarChristophe Leroy <christophe.leroy@c-s.fr>
    Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
    e4470bd6
8xx_mmu.c 4.99 KB