[PATCH v2] kexec: Increase the upper limit for RAM segments

[Dave Young]

On 11/11/16 at 03:21pm, Sameer Goel wrote:
> On a newer UEFI based Qualcomm target the number of system ram regions
> retrieved from /proc/iomem are ~40. So increasing the current hardcoded
> values to 64 from 16.

There is below uapi in kernel:
include/uapi/linux/kexec.h:#define KEXEC_SEGMENT_MAX 16

So you should fix it in kernel first and update the kexec-tools to use
the kernel header file instead.

Thanks
Dave

> 
> Signed-off-by: Sameer Goel <sgoel at codeaurora.org>
> ---
>  kexec/arch/arm64/kexec-arm64.h | 2 +-
>  kexec/kexec-syscall.h          | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/kexec/arch/arm64/kexec-arm64.h b/kexec/arch/arm64/kexec-arm64.h
> index bac62f8..bd4c20e 100644
> --- a/kexec/arch/arm64/kexec-arm64.h
> +++ b/kexec/arch/arm64/kexec-arm64.h
> @@ -11,7 +11,7 @@
>  #include "image-header.h"
>  #include "kexec.h"
>  
> -#define KEXEC_SEGMENT_MAX 16
> +#define KEXEC_SEGMENT_MAX 64
>  
>  #define BOOT_BLOCK_VERSION 17
>  #define BOOT_BLOCK_LAST_COMP_VERSION 16
> diff --git a/kexec/kexec-syscall.h b/kexec/kexec-syscall.h
> index c0d0bea..f84c937 100644
> --- a/kexec/kexec-syscall.h
> +++ b/kexec/kexec-syscall.h
> @@ -115,7 +115,7 @@ static inline long kexec_file_load(int kernel_fd, int initrd_fd,
>  #define KEXEC_ARCH_MIPS    ( 8 << 16)
>  #define KEXEC_ARCH_CRIS    (76 << 16)
>  
> -#define KEXEC_MAX_SEGMENTS 16
> +#define KEXEC_MAX_SEGMENTS 64
>  
>  #ifdef __i386__
>  #define KEXEC_ARCH_NATIVE	KEXEC_ARCH_386
> -- 
> Qualcomm Datacenter Technologies as an affiliate of Qualcomm Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.
> 
> 
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