From: Yinghai Lu <yinghai@kernel.org>
To: Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
"H. Peter Anvin" <hpa@zytor.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
linux-kernel@vger.kernel.org, Yinghai Lu <yinghai@kernel.org>
Subject: [PATCH v3 00/12] x86, boot, 64bit: Add support for loading ramdisk and bzImage high
Date: Tue, 20 Nov 2012 23:15:58 -0800 [thread overview]
Message-ID: <1353482170-10160-1-git-send-email-yinghai@kernel.org> (raw)
Now we have limit kdump reseved under 896M, because kexec has the limitation.
and also bzImage need to stay under 4g.
To make kexec/kdump could use range above 4g, we need to make bzImage and
ramdisk could be loaded above 4g.
During booting bzImage will be unpacked on same postion and stay high.
The patches add field in boot header to
1. get info about ramdisk position info above 4g from bootloader/kexec
2. set xloadflags bit0 in header for bzImage and bootloader/kexec load
could check that to decide if need to put bzImage high.
This patches is tested with kexec tools with local changes and they are sent
to kexec list.
could be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git for-x86-boot
and it is on top of for-x86-mm
-v2: add ext_cmd_line_ptr support, and handle boot_param/cmd_line is above
4G case.
-v3: according to hpa, use xloadflags instead code32_start_offset.
0x200 will not be changed...
Thanks
Yinghai
Yinghai Lu (12):
x86, boot: move verify_cpu.S after 0x200
x86, boot: Move lldt/ltr out of 64bit code section
x86, 64bit: set extra ident page table for whole kernel range
x86, 64bit: add support for loading kernel above 512G
x86: Merge early_reserve_initrd for 32bit and 64bit
x86: add get_ramdisk_image/size
x86, boot: add get_cmd_line_ptr()
x86, boot: Don't check if cmd_line_ptr is accessible in misc/decompressor()
x86, boot: update cmd_line_ptr to unsigned long
x86: use io_remap to access real_mode_data
x86, boot: add fields to support load bzImage and ramdisk high
x86: remove 1024g limitation for kexec buffer on 64bit
Documentation/x86/boot.txt | 40 +++++++++++++++++++++++++-
arch/x86/boot/boot.h | 18 +++++++++--
arch/x86/boot/cmdline.c | 12 ++++----
arch/x86/boot/compressed/cmdline.c | 13 +++++++-
arch/x86/boot/compressed/head_64.S | 14 ++++++---
arch/x86/boot/header.S | 16 +++++++++-
arch/x86/include/asm/bootparam.h | 6 +++-
arch/x86/include/asm/kexec.h | 6 ++--
arch/x86/kernel/head32.c | 11 -------
arch/x86/kernel/head64.c | 42 +++++++++++++++++----------
arch/x86/kernel/head_64.S | 49 +++++++++++++++++++++++++------
arch/x86/kernel/setup.c | 55 +++++++++++++++++++++++++++++------
12 files changed, 212 insertions(+), 70 deletions(-)
--
1.7.7
next reply other threads:[~2012-11-21 7:16 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-21 7:15 Yinghai Lu [this message]
2012-11-21 7:15 ` [PATCH v3 01/12] x86, boot: move verify_cpu.S after 0x200 Yinghai Lu
2012-11-21 17:23 ` H. Peter Anvin
2012-11-21 19:45 ` Yinghai Lu
2012-11-21 19:50 ` H. Peter Anvin
2012-11-21 20:15 ` Yinghai Lu
2012-11-22 5:48 ` Eric W. Biederman
[not found] ` <3178cb29-0e9e-44d2-b21f-45c53f38980a@email.android.com>
2012-11-22 11:27 ` Eric W. Biederman
2012-11-24 7:00 ` Yinghai Lu
2012-11-21 7:16 ` [PATCH v3 02/12] x86, boot: Move lldt/ltr out of 64bit code section Yinghai Lu
2012-11-21 7:16 ` [PATCH v3 03/12] x86, 64bit: set extra ident page table for whole kernel range Yinghai Lu
2012-11-21 7:16 ` [PATCH v3 04/12] x86, 64bit: add support for loading kernel above 512G Yinghai Lu
2012-11-21 7:16 ` [PATCH v3 05/12] x86: Merge early_reserve_initrd for 32bit and 64bit Yinghai Lu
2012-11-21 7:40 ` Pekka Enberg
2012-11-21 7:16 ` [PATCH v3 06/12] x86: add get_ramdisk_image/size Yinghai Lu
2012-11-21 7:16 ` [PATCH v3 07/12] x86, boot: add get_cmd_line_ptr() Yinghai Lu
2012-11-21 7:16 ` [PATCH v3 08/12] x86, boot: Don't check if cmd_line_ptr is accessible in misc/decompressor() Yinghai Lu
2012-11-21 17:21 ` H. Peter Anvin
2012-11-21 19:18 ` Yinghai Lu
2012-11-21 7:16 ` [PATCH v3 09/12] x86, boot: update cmd_line_ptr to unsigned long Yinghai Lu
2012-11-21 7:16 ` [PATCH v3 10/12] x86: use io_remap to access real_mode_data Yinghai Lu
2012-11-21 7:16 ` [PATCH v3 11/12] x86, boot: add fields to support load bzImage and ramdisk high Yinghai Lu
2012-11-21 17:17 ` H. Peter Anvin
2012-11-21 18:59 ` Yinghai Lu
2012-11-21 19:18 ` H. Peter Anvin
2012-11-22 5:56 ` Yinghai Lu
[not found] ` <a1ca794a-09d4-4d36-8c8c-67100cb3696e@email.android.com>
2012-11-22 6:47 ` Yinghai Lu
2012-11-22 6:58 ` Yinghai Lu
2012-11-22 15:59 ` H. Peter Anvin
2012-11-22 18:28 ` Yinghai Lu
2012-11-22 18:37 ` H. Peter Anvin
2012-11-22 18:50 ` Yinghai Lu
2012-11-22 18:51 ` H. Peter Anvin
2012-11-22 20:18 ` Yinghai Lu
2012-11-22 20:20 ` H. Peter Anvin
2012-11-22 20:29 ` Yinghai Lu
2012-11-22 20:50 ` H. Peter Anvin
2012-11-22 21:02 ` H. Peter Anvin
2012-11-22 22:13 ` Yinghai Lu
2012-11-24 12:37 ` Eric W. Biederman
2012-11-24 17:32 ` H. Peter Anvin
[not found] ` <CAE9FiQV0Q0fi7TrNjihdsUt0ueT4LLON4o+JEmX6ry9S6AU-ug@mail.gmail.com>
2012-11-24 18:24 ` H. Peter Anvin
2012-11-24 19:50 ` H. Peter Anvin
2012-11-24 21:30 ` Yinghai Lu
2012-11-24 21:38 ` H. Peter Anvin
2012-11-24 22:18 ` Yinghai Lu
2012-11-24 22:32 ` H. Peter Anvin
2012-11-24 23:24 ` Yinghai Lu
2012-11-24 23:50 ` Eric W. Biederman
2012-11-25 0:04 ` H. Peter Anvin
2012-11-25 0:11 ` Yinghai Lu
2012-11-25 5:50 ` Yinghai Lu
2012-11-25 5:52 ` H. Peter Anvin
2012-11-25 6:09 ` Yinghai Lu
2012-11-25 0:04 ` Yinghai Lu
2012-11-25 0:06 ` H. Peter Anvin
2012-11-21 7:16 ` [PATCH v3 12/12] x86: remove 1024g limitation for kexec buffer on 64bit Yinghai Lu
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