linux-kernel - [tip:x86/mm2] x86, boot: Not need to check setup_header version for setup

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Message-ID: <tip-38e825c685f1cc82b237f4147c3e35691a610ade@git.kernel.org>
Date:	Tue, 29 Jan 2013 17:47:57 -0800
From:	tip-bot for Yinghai Lu <yinghai@...nel.org>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org,
	yinghai@...nel.org, tglx@...utronix.de, hpa@...ux.intel.com
Subject: [tip:x86/mm2] x86, boot:
  Not need to check setup_header version for setup_data

Commit-ID:  38e825c685f1cc82b237f4147c3e35691a610ade
Gitweb:     http://git.kernel.org/tip/38e825c685f1cc82b237f4147c3e35691a610ade
Author:     Yinghai Lu <yinghai@...nel.org>
AuthorDate: Thu, 24 Jan 2013 12:20:08 -0800
Committer:  H. Peter Anvin <hpa@...ux.intel.com>
CommitDate: Tue, 29 Jan 2013 15:31:51 -0800

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 <yinghai@...nel.org>
Link: http://lkml.kernel.org/r/1359058816-7615-28-git-send-email-yinghai@kernel.org
Signed-off-by: H. Peter Anvin <hpa@...ux.intel.com>
---
 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 519f2bc..b80bee1 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));
--
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