On Fri, 2013-06-14 at 17:56 -0700, Yinghai Lu wrote:
> Now we only search buffer for override acpi table under 4G.
> In some case, like user use memmap to exclude all low ram,
> we may not find range for it under 4G.
>
> Do second try to search above 4G.
>
> Signed-off-by: Yinghai Lu <[email protected]>
> Cc: "Rafael J. Wysocki" <[email protected]>
> Cc: [email protected]
> Tested-by: Thomas Renninger <[email protected]>
> Reviewed-by: Tang Chen <[email protected]>
> Tested-by: Tang Chen <[email protected]>
> ---
> drivers/acpi/osl.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
> index 93e3194..42c48fc 100644
> --- a/drivers/acpi/osl.c
> +++ b/drivers/acpi/osl.c
> @@ -627,6 +627,10 @@ void __init acpi_initrd_override(void *data, size_t size)
> /* under 4G at first, then above 4G */
> acpi_tables_addr = memblock_find_in_range(0, (1ULL<<32) - 1,
> all_tables_size, PAGE_SIZE);
> + if (!acpi_tables_addr)
> + acpi_tables_addr = memblock_find_in_range(0,
> + ~(phys_addr_t)0,
> + all_tables_size, PAGE_SIZE);
Should this search start from 4G, instead of 0?
Thanks,
-Toshi
> if (!acpi_tables_addr) {
> WARN_ON(1);
> return;
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