[PATCH v6 9/9] x86: Pass memory range via E820 for kdump

[WANG Chao]

On 04/17/14 at 05:45pm, Dave Young wrote:
> > 
> > It comes to me that in the future there are two places that can be
> > improved or cleaned up. I summarize them as the followings:
> > 
> > - clean up cmdline_add_memmap and cmdline_add_memmap_acpi
> > - Dropping hard limitation memory maps, like CRASH_MAX_MEMMAP_NR
> 
> Hmm, kernel E820MAX is 128 in case non EFI like below, likely 1024
> is enough, so keep current limitation is good:
> 
> #ifdef CONFIG_EFI
> #include <linux/numa.h>
> #define E820_X_MAX (E820MAX + 3 * MAX_NUMNODES)
> #else   /* ! CONFIG_EFI */
> #define E820_X_MAX E820MAX
> #endif

That's ok. I'm also fine with hard code 1024 for now.

> 
> > 
> > Do you have additional issues needed to be addressed?
> 
> Another in mind is using one array for both 1st kernel and 2nd kernel
> if possible.