Re: [PATCH v15 3/6] x86/boot: Introduce efi_get_rsdp_addr() to find RSDP from EFI table

Chao Fan
2019-01-14T01:27:45Z

On Sun, Jan 13, 2019 at 12:05:45PM +0100, Borislav Petkov wrote:
>On Sun, Jan 13, 2019 at 05:47:04PM +0800, Chao Fan wrote:
>> 'acpi_physical_address' could be define as u64 or u32.
>
>And when can acpi_physical_address be a u32?
>

According to the code, I saw:
#ifdef ACPI_ASL_COMPILER
#define ACPI_32BIT_PHYSICAL_ADDRESS
#endif

and then
#ifdef ACPI_32BIT_PHYSICAL_ADDRESS
typedef u32 acpi_physical_address;

As for ACPI_ASL_COMPILER, I saw iASL in documention, but can't find more
information in the code. If I miss something, please let me know.

Thanks,
Chao Fan

>--
>Regards/Gruss,
> Boris.
>
>Good mailing practices for 400: avoid top-posting and trim the reply.
>
>