Hello,
On Thu, Jun 13, 2013 at 09:02:50PM +0800, Tang Chen wrote:
> From: Yinghai Lu <ying...@kernel.org>
>
> Now we have pfn_mapped[] array, and max_low_pfn_mapped should not
> be used anymore. Users should use pfn_mapped[] or just
> 1UL<<(32-PAGE_SHIFT) instead.
>
> The only user of max_low_pfn_mapped is ACPI_INITRD_TABLE_OVERRIDE.
> We could change to use 1U<<(32_PAGE_SHIFT) with it, aka under 4G.
^ typo
...
> diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
> index e721863..93e3194 100644
> --- a/drivers/acpi/osl.c
> +++ b/drivers/acpi/osl.c
> @@ -624,9 +624,9 @@ void __init acpi_initrd_override(void *data, size_t size)
> if (table_nr == 0)
> return;
>
> - acpi_tables_addr =
> - memblock_find_in_range(0, max_low_pfn_mapped << PAGE_SHIFT,
> - all_tables_size, PAGE_SIZE);
> + /* under 4G at first, then above 4G */
> + acpi_tables_addr = memblock_find_in_range(0, (1ULL<<32) - 1,
> + all_tables_size, PAGE_SIZE);
No bigge, but why (1ULL << 32) - 1? Shouldn't it be just 1ULL << 32?
memblock deals with [@start, @end) areas, right?
Other than that,
Acked-by: Tejun Heo <t...@kernel.org>
Thanks.
--
tejun
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