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 <ying...@kernel.org>
---
arch/x86/kernel/setup.c | 6 ------
1 file changed, 6 deletions(-)
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 744c292..398ec0c 100644
--- 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));
--
1.7.10.4
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