Hi Mahesh,
On Tue, 15 Mar 2011 22:39:23 +0530
Mahesh J Salgaonkar <mahesh at linux.vnet.ibm.com> wrote:
>
> From: Mahesh Salgaonkar <mahesh at linux.vnet.ibm.com>
>
> While excluding free pages from s390x dumps taken on LPAR, makedumpfile
> fails to convert page address to pfn. The reason is, the memory for
> mem_section structure is allocated below '_stext' and since KVBASE is
> set to SYMBOL(_stext), the function is_kvaddr() fails and return NULL
> address.
Why do we need this patch ?
to support the latest kernel version of s390 ?
or to support LPAR of s390 ?
I'd like to know whether we need a similar change for the other architecture.
I will appreciate if getting a hint.
Thanks
Ken'ichi Ohmichi
> Set KVBASE to KENRELBASE(0) for s390x architecture to fix this issue.
>
> Signed-off-by: Mahesh Salgaonkar <mahesh at linux.vnet.ibm.com>
> ---
>
> makedumpfile.h | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/makedumpfile.h b/makedumpfile.h
> index 11e1a93..4ec77b7 100644
> --- a/makedumpfile.h
> +++ b/makedumpfile.h
> @@ -615,7 +615,7 @@ do { \
> #ifdef __s390x__
> #define __PAGE_OFFSET (info->page_size - 1)
> #define KERNELBASE (0)
> -#define KVBASE (SYMBOL(_stext))
> +#define KVBASE KERNELBASE
> #define _SECTION_SIZE_BITS (28)
> #define _MAX_PHYSMEM_BITS (42)
>
>
