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SubjectRe: [RFC PATCH 1/2] efi: Make 'efi_enabled' a function to query EFI facilities
On 01/03/2013 06:18 AM, Matt Fleming wrote:
> From: Matt Fleming <matt.fleming@intel.com>
>

snip

> /*
> - * We play games with efi_enabled so that the compiler will, if possible, remove
> - * EFI-related code altogether.
> + * We play games with efi_enabled so that the compiler will, if
> + * possible, remove EFI-related code altogether.
> */
> +#define EFI_BOOT 0x00000001 /* Were we booted from EFI? */
> +#define EFI_SYSTEM_TABLES 0x00000002 /* Can we use EFI system tables? */
> +#define EFI_CONFIG_TABLES 0x00000004 /* Can we use EFI config tables? */
> +#define EFI_RUNTIME_SERVICES 0x00000004 /* Can we use runtime services? */
> +#define EFI_MEMMAP 0x00000008 /* Can we use EFI memory map? */
> +#define EFI_64BIT 0x00000010 /* Is the firmware 64-bit? */
> +

Your use of test_bit() and set_bit() imply that these macros should be
bit numbers, not bit masks. It'll work until you define a mask with an
integer value greater then 31.

rtg
--
Tim Gardner tim.gardner@canonical.com


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