RE: [bug #36532] boot in EFI mode (x86_64) fails on some systems

[Stuart_Hayes]

> 
> Well, this works, too (on top of HEAD from 7 june).
> 
> 
> --- ../../grub/grub-core/loader/i386/linux.c  2012-05-31
> 12:59:19.000000000 -0400
> +++ grub-core/loader/i386/linux.c     2012-06-12 20:47:51.455718055 -0400
> @@ -139,7 +139,7 @@ find_efi_mmap_size (void)
> 
>    /* Increase the size a bit for safety, because GRUB allocates more
> on
>       later, and EFI itself may allocate more.  */
> -  mmap_size += (1 << 12);
> +  mmap_size += (3 << 12);
> 
>    mmap_size = page_align (mmap_size);
>    return mmap_size;

Vladimir,

The 2.00rc1 version of grub2 still doesn't fix the efi memory map buffer size 
I've been working on (though I can see you are now allocating the efi memory 
map buffer very shortly before you are calling grub_efi_finish_boot_services()).

Increasing the mmap_size in find_efi_mmap_size()--as in the patch immediately 
above this text--does fix the problem.  Even adding (2 << 12) (instead of (1 << 
12)) to the mmap_size will work on the system I'm testing with.

As is, though, 2.00rc1 fails to boot, with the error message "memory map buffer 
is too small".

Thanks,
Stuart