Messages in this thread | | | Subject | Re: [RFC PATCH 1/2] efi: Make 'efi_enabled' a function to query EFI facilities | From | "H. Peter Anvin" <> | Date | Fri, 04 Jan 2013 08:17:51 -0800 |
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Well, *I* am confused as heck. They look like bitmasks, we normally use decimal numbers for bit numbers as a matter of style.
Matt Fleming <matt@console-pimps.org> wrote:
>On Fri, 2013-01-04 at 08:08 -0700, Tim Gardner wrote: >> 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. > >They're not intended to be bitmasks in the sense that no two bits are >set in each constant (and I am aware of the upper limit). > >I have no problem changing the above values to bit numbers if that >would >be less confusing.
-- Sent from my mobile phone. Please excuse brevity and lack of formatting.
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