From: Chen Yu <yu.c.chen@intel.com>
To: Thomas Gleixner <tglx@linutronix.de>,
"Rafael J. Wysocki" <rafael@kernel.org>
Cc: Pavel Machek <pavel@ucw.cz>, Len Brown <len.brown@intel.com>,
Zhimin Gu <kookoo.gu@intel.com>, Chen Yu <yu.c.chen@intel.com>,
x86@kernel.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 00/12][v4] Backport several fixes from 64bits to 32bits hibernation
Date: Fri, 21 Sep 2018 14:24:46 +0800 [thread overview]
Message-ID: <cover.1537448058.git.yu.c.chen@intel.com> (raw)
Currently there are mainly three bugs in 32bits system when doing
hibernation:
1. The page copy code is not running in safe page, which might
cause hang during resume.
2. There's no text mapping for the final jump address
of the original kernel, which might cause the system jumping
into illegal address and causes system hang during resume.
3. The restore kernel switches to its own kernel page table(swapper_pg_dir)
rather than the original kernel page table after all the pages
been copied back, which might cause invalid virtual-physical
mapping issue during resume.
To solve these problems:
1. Copy the code core_restore_code to a safe page, to avoid the instruction
code been overwritten when image kernel pages are being copied.
2. Set up temporary text mapping for the image kernel's jump address,
so that after all the pages have been copied back, the system could
jump to this address.
3. Switch to the original kernel page table during resume.
Furthermore, MD5 hash check for e820 map is also backported from 64bits
system.
In order to make this patch set more readable, these fixes are splitted
into several sub patches.
And use CONFIG_X86_64 to control the common code to be 'activated' for
32 bit system during each sub-patch for better maintaining.
Chen Yu (1):
PM / hibernate: Check the success of generating md5 digest before
hibernation
Zhimin Gu (11):
x86, hibernate: Fix nosave_regions setup for hibernation
x86-32/asm/power: Create stack frames in hibernate_asm_32.S
x86, hibernate: Extract the common code of 64/32 bit system
x86-32, hibernate: Enable CONFIG_ARCH_HIBERNATION_HEADER on 32bit
system
x86, hibernate: Rename temp_level4_pgt to temp_pgt
x86-32, hibernate: Use temp_pgt as the temporary page table
x86-32, hibernate: Use the page size macro instead of constant value
x86-32, hibernate: Switch to original page table after resumed
x86-32, hibernate: Switch to relocated restore code during resume on
32bit system
x86-32, hibernate: Set up temporary text mapping for 32bit system
x86-32, hibernate: Adjust in_suspend after resumed on 32bit system
arch/x86/Kconfig | 2 +-
arch/x86/include/asm/suspend.h | 8 +
arch/x86/include/asm/suspend_32.h | 4 +
arch/x86/kernel/setup.c | 2 +-
arch/x86/power/Makefile | 2 +-
arch/x86/power/hibernate.c | 248 ++++++++++++++++++++++++++++++
arch/x86/power/hibernate_32.c | 52 +++++--
arch/x86/power/hibernate_64.c | 224 +--------------------------
arch/x86/power/hibernate_asm_32.S | 37 ++++-
arch/x86/power/hibernate_asm_64.S | 2 +-
10 files changed, 334 insertions(+), 247 deletions(-)
create mode 100644 arch/x86/power/hibernate.c
--
2.17.1
next reply other threads:[~2018-09-21 6:19 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-21 6:24 Chen Yu [this message]
2018-09-21 6:26 ` [PATCH 01/12][v4] x86, hibernate: Fix nosave_regions setup for hibernation Chen Yu
2018-09-21 6:26 ` [PATCH 02/12][v4] PM / hibernate: Check the success of generating md5 digest before hibernation Chen Yu
2018-09-21 6:26 ` [PATCH 03/12][v4] x86-32/asm/power: Create stack frames in hibernate_asm_32.S Chen Yu
2018-09-21 6:26 ` [PATCH 04/12][v4] x86, hibernate: Extract the common code of 64/32 bit system Chen Yu
2018-09-21 6:27 ` [PATCH 05/12][v4] x86-32, hibernate: Enable CONFIG_ARCH_HIBERNATION_HEADER on 32bit system Chen Yu
2018-09-21 6:27 ` [PATCH 06/12][v4] x86, hibernate: Rename temp_level4_pgt to temp_pgt Chen Yu
2018-09-21 6:27 ` [PATCH 07/12][v4] x86-32, hibernate: Use temp_pgt as the temporary page table Chen Yu
2018-09-21 11:21 ` Pavel Machek
2018-09-21 6:28 ` [PATCH 08/12][v4] x86-32, hibernate: Use the page size macro instead of constant value Chen Yu
2018-09-21 6:28 ` [PATCH 09/12][v4] x86-32, hibernate: Switch to original page table after resumed Chen Yu
2018-09-21 6:28 ` [PATCH 10/12][v4] x86-32, hibernate: Switch to relocated restore code during resume on 32bit system Chen Yu
2018-09-21 6:28 ` [PATCH 11/12][v4] x86-32, hibernate: Set up temporary text mapping for " Chen Yu
2018-09-21 6:28 ` [PATCH 12/12][v4] x86-32, hibernate: Adjust in_suspend after resumed on " Chen Yu
2018-10-02 9:20 ` [PATCH 00/12][v4] Backport several fixes from 64bits to 32bits hibernation Thomas Gleixner
2018-10-05 9:49 ` Rafael J. Wysocki
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