x86, boot: Not need to check setup_header version for setup_data

That is for bootloaders.

setup_data is in setup_header, and bootloader is copying that from bzImage.
So for old bootloader should keep that as 0 already.

old kexec-tools till now for elf image set setup_data to 0, so it is ok.

Signed-off-by: Yinghai Lu <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: H. Peter Anvin <[email protected]>

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 519f2bc4950a58aab993d17d87703ca2750659d9..b80bee10982f9b8dd5313f7c53d8e253a835c984 100644 (file)
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -439,8 +439,6 @@ static void __init parse_setup_data(void)
        struct setup_data *data;
        u64 pa_data;
 
-       if (boot_params.hdr.version < 0x0209)
-               return;
        pa_data = boot_params.hdr.setup_data;
        while (pa_data) {
                u32 data_len, map_len;
@@ -476,8 +474,6 @@ static void __init e820_reserve_setup_data(void)
        u64 pa_data;
        int found = 0;
 
-       if (boot_params.hdr.version < 0x0209)
-               return;
        pa_data = boot_params.hdr.setup_data;
        while (pa_data) {
                data = early_memremap(pa_data, sizeof(*data));
@@ -501,8 +497,6 @@ static void __init memblock_x86_reserve_range_setup_data(void)
        struct setup_data *data;
        u64 pa_data;
 
-       if (boot_params.hdr.version < 0x0209)
-               return;
        pa_data = boot_params.hdr.setup_data;
        while (pa_data) {
                data = early_memremap(pa_data, sizeof(*data));