Re: [Xen-devel] [PATCH v10 06/13] efi: create new early memory allocator

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 30.11.16 at 14:04, <daniel.kiper@xxxxxxxxxx> wrote:
> --- a/xen/common/efi/boot.c
> +++ b/xen/common/efi/boot.c
> @@ -98,6 +98,52 @@ static CHAR16 __initdata newline[] = L"\r\n";
>  #define PrintStr(s) StdOut->OutputString(StdOut, s)
>  #define PrintErr(s) StdErr->OutputString(StdErr, s)
>  
> +#ifndef CONFIG_ARM
> +
> +/*
> + * TODO: Enable EFI boot allocator on ARM.
> + * This code can be common for x86 and ARM.
> + * Things TODO on ARM before enabling ebmalloc:
> + *   - estimate required EBMALLOC_SIZE value,
> + *   - where (in which section) ebmalloc_mem[] should live; if in 
> .bss.page_aligned
> + *     then whole BSS zeroing have to be disabled in 
> xen/arch/arm/arm64/head.S;
> + *     though BSS should be initialized somehow before use of variables 
> living there,
> + *   - call free_ebmalloc_unused_mem() sowehere in init code.
> + */
> +
> +#define EBMALLOC_SIZE        MB(1)

The previous communication with Julien ended in it being acceptable
to him for this to be zero for ARM for now, eliminating (or at least
reducing) the #ifndef CONFIG_ARM guarded region(s).

Jan


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