On Fri, 2008-11-14 at 16:09 -0600, Hollis Blanchard wrote: > > If this is all too much, then I'm close to giving up and burning a > 64KB page, which requires only ALIGN_DOWN() in the kernel.
ppc: force memory size to be a multiple of PAGE_SIZE Ensure that total memory size is page-aligned, because otherwise bootmem.c gets upset. This error case was triggered by using 64 KiB pages in the kernel while arch/powerpc/boot/4xx.c arbitrarily reduced the amount of memory by 4096 (to work around the "CHIP11" errata which affects the last 256 bytes of physical memory). Signed-off-by: Hollis Blanchard <[EMAIL PROTECTED]> --- This is on a common code path, and lmb_enforce_memory_limit() will now always take action, so wider testing would be good. This patch supercedes http://patchwork.ozlabs.org/patch/8211/ . diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -1200,6 +1200,11 @@ void __init early_init_devtree(void *par early_reserve_mem(); phyp_dump_reserve_mem(); + /* Ensure that total memory size is page-aligned, because otherwise + * bootmem.c gets upset. */ + lmb_analyze(); + memory_limit = lmb_phys_mem_size() & PAGE_MASK; + lmb_enforce_memory_limit(memory_limit); lmb_analyze(); -- Hollis Blanchard IBM Linux Technology Center _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
