Re: [PATCH v2 13/18] x86, numa, mem_hotplug: Skip all the regions the kernel resides in.

Tejun Heo
2013-08-01T13:42:25Z

> On Thu, Aug 01, 2013 at 03:06:35PM +0800, Tang Chen wrote:
>
> At early time, memblock will reserve some memory for the kernel,
> such as the kernel code and data segments, initrd file, and so on=EF=BC=8C
> which means the kernel resides in these memory regions.
>
> Even if these memory regions are hotpluggable, we should not
> mark them as hotpluggable. Otherwise the kernel won't have enough
> memory to boot.
>
> This patch finds out which memory regions the kernel resides in,
> and skip them when finding all hotpluggable memory regions.
>
> Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
> Reviewed-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
> ---
> mm/memory=5Fhotplug.c | 45 +++++++++++++++++++++++++++++++++++++++++++++
> 1 files changed, 45 insertions(+), 0 deletions(-)
>
> diff --git a/mm/memory=5Fhotplug.c b/mm/memory=5Fhotplug.c
> index 326e2f2..b800c9c 100644
> --- a/mm/memory=5Fhotplug.c
> +++ b/mm/memory=5Fhotplug.c
> @@ -31,6 +31,7 @@
> #include <linux/firmware-map.h>
> #include <linux/stop=5Fmachine.h>
> #include <linux/acpi.h>
> +#include <linux/memblock.h>
> =20
> #include <asm/tlbflush.h>
> =20

This patch is contaminated. Can you please resend?

Thanks.

--
tejun