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alistair23-linux/arch/x86/kernel
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Rafael J. Wysocki d158cbdf39 Hibernation: Arbitrary boot kernel support on x86_64 
Make it possible to restore a hibernation image on x86_64 with the help of a
kernel different from the one in the image.

The idea is to split the core restoration code into two separate parts and to
place each of them in a different page.   The first part belongs to the boot
kernel and is executed as the last step of the image kernel's memory
restoration procedure.   Before being executed, it is relocated to a safe page
that won't be overwritten while copying the image kernel pages.

The final operation performed by it is a jump to the second part of the core
restoration code that belongs to the image kernel and has just been restored.
This code makes the CPU switch to the image kernel's page tables and restores
the state of general purpose registers (including the stack pointer) from
before the hibernation.

The main issue with this idea is that in order to jump to the second part of
the core restoration code the boot kernel needs to know its address.
 However, this address may be passed to it in the image header.   Namely, the
part of the image header previously used for checking if the version of the
image kernel is correct can be replaced with some architecture specific data
that will allow the boot kernel to jump to the right address within the image
kernel.   These data should also be used for checking if the image kernel is
compatible with the boot kernel (as far as the memory restroration procedure
is concerned).  It can be done, for example, with the help of a "magic" value
that has to be equal in both kernels, so that they can be regarded as
compatible.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-18 14:37:19 -07:00
..
acpi s2ram: kill old debugging junk 2007-10-18 14:37:19 -07:00
cpu x86: expand /proc/interrupts to include missing vectors, v2 2007-10-17 20:16:53 +02:00
cpufreq x86_64: move kernel/cpufreq 2007-10-11 11:17:06 +02:00
.gitignore .gitignore update for x86 arch 2007-10-17 21:19:04 +02:00
alternative.c Merge ssh://master.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-x86 2007-10-17 13:13:16 -07:00
aperture_64.c x86_64: move kernel 2007-10-11 11:17:24 +02:00
apic_32.c x86: expand /proc/interrupts to include missing vectors, v2 2007-10-17 20:16:53 +02:00
apic_64.c x86: expand /proc/interrupts to include missing vectors, v2 2007-10-17 20:16:53 +02:00
apm_32.c Merge branch 'dmi-const' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/misc-2.6 2007-10-11 19:18:45 -07:00
asm-offsets.c i386: move kernel 2007-10-11 11:17:01 +02:00
asm-offsets_32.c paravirt: refactor struct paravirt_ops into smaller pv_*_ops 2007-10-16 11:51:29 -07:00
asm-offsets_64.c x86_64: move kernel 2007-10-11 11:17:24 +02:00
audit_64.c x86_64: move kernel 2007-10-11 11:17:24 +02:00
bootflag.c i386: move kernel 2007-10-11 11:17:01 +02:00
bugs_64.c Delete filenames in comments. 2007-10-13 10:01:23 -07:00
cpuid.c i386: simplify smp_call_function_single() call sequence in cpuid 2007-10-17 20:16:19 +02:00
crash_32.c i386: move kernel 2007-10-11 11:17:01 +02:00
crash_64.c x86_64: move kernel 2007-10-11 11:17:24 +02:00
crash_dump_32.c Delete filenames in comments. 2007-10-13 10:01:23 -07:00
crash_dump_64.c Delete filenames in comments. 2007-10-13 10:01:23 -07:00
doublefault_32.c i386: move kernel 2007-10-11 11:17:01 +02:00
e820_32.c i386: move kernel 2007-10-11 11:17:01 +02:00
e820_64.c [x86] remove uses of magic macros for boot_params access 2007-10-16 17:38:31 -07:00
early-quirks_64.c x86_64: move kernel 2007-10-11 11:17:24 +02:00
early_printk.c [x86] remove uses of magic macros for boot_params access 2007-10-16 17:38:31 -07:00
efi_32.c [x86] remove uses of magic macros for boot_params access 2007-10-16 17:38:31 -07:00
efi_stub_32.S i386: move kernel 2007-10-11 11:17:01 +02:00
entry_32.S Merge branch 'xen-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen 2007-10-17 11:10:11 -07:00
entry_64.S x86: return correct error code from child_rip in x86_64 entry.S 2007-10-17 20:15:29 +02:00
genapic_64.c x86: remove x86_cpu_to_log_apicid 2007-10-17 20:16:24 +02:00
genapic_flat_64.c x86: remove x86_cpu_to_log_apicid 2007-10-17 20:16:24 +02:00
geode_32.c x86: Geode Multi-Function General Purpose Timers support 2007-10-12 23:04:06 +02:00
head64.c [x86] remove uses of magic macros for boot_params access 2007-10-16 17:38:31 -07:00
head_32.S i386: print better early fault info 2007-10-17 20:16:56 +02:00
head_64.S x86_64: move kernel 2007-10-11 11:17:24 +02:00
hpet.c x86: HPET force enable for ICH5 2007-10-12 23:04:24 +02:00
i386_ksyms_32.c x86: convert mm_context_t semaphore to a mutex 2007-10-17 20:17:05 +02:00
i387_32.c Delete filenames in comments. 2007-10-13 10:01:23 -07:00
i387_64.c Delete filenames in comments. 2007-10-13 10:01:23 -07:00
i8237.c Delete filenames in comments. 2007-10-13 10:01:23 -07:00
i8253.c x86_64: remove now unused code 2007-10-12 23:04:23 +02:00
i8259_32.c x86: clean up struct irqaction initializers 2007-10-17 20:16:06 +02:00
i8259_64.c x86: more struct irqaction initializer cleanups 2007-10-17 20:16:07 +02:00
init_task_32.c i386: move kernel 2007-10-11 11:17:01 +02:00
init_task_64.c x86_64: move kernel 2007-10-11 11:17:24 +02:00
io_apic_32.c x86: make io_apic not connected pin print complete 2007-10-17 20:16:57 +02:00
io_apic_64.c x86: make io_apic not connected pin print complete 2007-10-17 20:16:57 +02:00
ioport_32.c Delete filenames in comments. 2007-10-13 10:01:23 -07:00
ioport_64.c Delete filenames in comments. 2007-10-13 10:01:23 -07:00
irq_32.c x86: also show non-zero IRQ counts for vectors that currently don't have a handler 2007-10-17 20:16:54 +02:00
irq_64.c x86: also show non-zero IRQ counts for vectors that currently don't have a handler 2007-10-17 20:16:54 +02:00
k8.c x86_64: move kernel 2007-10-11 11:17:24 +02:00
kprobes_32.c kprobes: support kretprobe blacklist 2007-10-16 09:43:10 -07:00
kprobes_64.c kprobes: support kretprobe blacklist 2007-10-16 09:43:10 -07:00
ldt_32.c x86: convert mm_context_t semaphore to a mutex 2007-10-17 20:17:05 +02:00
ldt_64.c x86: convert mm_context_t semaphore to a mutex 2007-10-17 20:17:00 +02:00
machine_kexec_32.c add-vmcore: add a prefix "VMCOREINFO_" to the vmcoreinfo macros 2007-10-17 08:42:54 -07:00
machine_kexec_64.c add-vmcore: add a prefix "VMCOREINFO_" to the vmcoreinfo macros 2007-10-17 08:42:54 -07:00
Makefile x86: delete vsyscall files during make clean 2007-10-17 21:56:01 +02:00
Makefile_32 x86: fix kernel rebuild due to vsyscall fallout 2007-10-17 21:19:23 +02:00
Makefile_64 x86_64: remove now unused code 2007-10-12 23:04:23 +02:00
mca_32.c Delete filenames in comments. 2007-10-13 10:01:23 -07:00
mce_64.c x86: clean up mce= argument parsing slightly 2007-10-17 20:16:32 +02:00
mce_amd_64.c x86: expand /proc/interrupts to include missing vectors, v2 2007-10-17 20:16:53 +02:00
mce_intel_64.c x86: expand /proc/interrupts to include missing vectors, v2 2007-10-17 20:16:53 +02:00
mfgpt_32.c x86: Geode MFGPT clock event device support 2007-10-12 23:04:06 +02:00
microcode.c i386: move kernel 2007-10-11 11:17:01 +02:00
module_32.c i386: move kernel 2007-10-11 11:17:01 +02:00
module_64.c x86_64: move kernel 2007-10-11 11:17:24 +02:00
mpparse_32.c i386: move kernel 2007-10-11 11:17:01 +02:00
mpparse_64.c x86_64: move kernel 2007-10-11 11:17:24 +02:00
msr.c i386: Misc cpuinit annotations 2007-10-17 20:16:00 +02:00
nmi_32.c x86: Fix irq0 / local apic timer accounting 2007-10-12 23:04:06 +02:00
nmi_64.c x86: Fix irq0 / local apic timer accounting 2007-10-12 23:04:07 +02:00
numaq_32.c i386: move kernel 2007-10-11 11:17:01 +02:00
paravirt_32.c paravirt: clean up lazy mode handling 2007-10-16 11:51:29 -07:00
pci-calgary_64.c x86: calgary get rid of translate_phb 2007-10-17 20:16:41 +02:00
pci-dma_32.c i386: Clean up duplicate includes in arch/i386/kernel/ 2007-10-17 20:15:51 +02:00
pci-dma_64.c x86: use dev_to_node() to get node for device in dma_alloc_pages() 2007-10-17 20:15:47 +02:00
pci-gart_64.c x86: Some cleanups for pci gart code 2007-10-17 20:16:10 +02:00
pci-nommu_64.c x86-64: update nommu to sg helpers 2007-10-16 11:26:02 +02:00
pci-swiotlb_64.c x86_64: move kernel 2007-10-11 11:17:24 +02:00
pcspeaker.c i386: move kernel 2007-10-11 11:17:01 +02:00
pmtimer_64.c x86_64: move kernel 2007-10-11 11:17:24 +02:00
process_32.c Delete filenames in comments. 2007-10-13 10:01:23 -07:00
process_64.c kprobes: support kretprobe blacklist 2007-10-16 09:43:10 -07:00
ptrace_32.c x86: convert mm_context_t semaphore to a mutex 2007-10-17 20:17:05 +02:00
ptrace_64.c x86: convert mm_context_t semaphore to a mutex 2007-10-17 20:17:00 +02:00
quirks.c x86: HPET add another ICH7 PCI id 2007-10-12 23:04:24 +02:00
reboot_32.c Merge branch 'dmi-const' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/misc-2.6 2007-10-11 19:18:45 -07:00
reboot_64.c x86_64: move kernel 2007-10-11 11:17:24 +02:00
reboot_fixups_32.c PCI: pci_get_device call from interrupt in reboot fixups 2007-10-12 15:03:15 -07:00
relocate_kernel_32.S i386: move kernel 2007-10-11 11:17:01 +02:00
relocate_kernel_64.S x86_64: move kernel 2007-10-11 11:17:24 +02:00
scx200_32.c long vs. unsigned long - low-hanging fruits in drivers 2007-10-14 12:41:51 -07:00
setup64.c [x86] remove uses of magic macros for boot_params access 2007-10-16 17:38:31 -07:00
setup_32.c [x86] remove uses of magic macros for boot_params access 2007-10-16 17:38:31 -07:00
setup_64.c x86: Use string instruction memcpy on AMD Fam11h 2007-10-17 20:16:58 +02:00
sigframe_32.h i386: move kernel 2007-10-11 11:17:01 +02:00
signal_32.c i386: remove unnecessary code 2007-10-17 20:17:01 +02:00
signal_64.c Delete filenames in comments. 2007-10-13 10:01:23 -07:00
smp_32.c x86: expand /proc/interrupts to include missing vectors, v2 2007-10-17 20:16:53 +02:00
smp_64.c x86: expand /proc/interrupts to include missing vectors, v2 2007-10-17 20:16:53 +02:00
smpboot_32.c x86: misc. constifications 2007-10-17 20:16:08 +02:00
smpboot_64.c x86: remove x86_cpu_to_log_apicid 2007-10-17 20:16:24 +02:00
smpcommon_32.c i386: move kernel 2007-10-11 11:17:01 +02:00
srat_32.c i386: move kernel 2007-10-11 11:17:01 +02:00
stacktrace.c x86: constify stacktrace_ops 2007-10-17 20:16:11 +02:00
summit_32.c Delete filenames in comments. 2007-10-13 10:01:23 -07:00
suspend_64.c Hibernation: Arbitrary boot kernel support on x86_64 2007-10-18 14:37:19 -07:00
suspend_asm_64.S Hibernation: Arbitrary boot kernel support on x86_64 2007-10-18 14:37:19 -07:00
sys_i386_32.c remove include/asm-*/ipc.h 2007-10-17 08:42:55 -07:00
sys_x86_64.c Delete filenames in comments. 2007-10-13 10:01:23 -07:00
syscall_64.c i386/x86_64: move headers to include/asm-x86 2007-10-11 11:20:03 +02:00
syscall_table_32.S i386: move kernel 2007-10-11 11:17:01 +02:00
sysenter_32.c Delete filenames in comments. 2007-10-13 10:01:23 -07:00
tce_64.c x86: Create clflush() inline, remove hardcoded wbinvd 2007-10-17 20:16:12 +02:00
time_32.c x86: Fix irq0 / local apic timer accounting 2007-10-12 23:04:06 +02:00
time_64.c x86_64: remove now unused code 2007-10-12 23:04:23 +02:00
topology.c i386: no need to make enable_cpu_hotplug a variable 2007-10-17 20:16:16 +02:00
trampoline_32.S x86: misc. constifications 2007-10-17 20:16:08 +02:00
trampoline_64.S x86: misc. constifications 2007-10-17 20:16:08 +02:00
traps_32.c i386: clean up oops/bug reports 2007-10-17 20:16:52 +02:00
traps_64.c x86: constify stacktrace_ops 2007-10-17 20:16:11 +02:00
tsc_32.c x86: do not crash on non-Geode PCs in TSC probe 2007-10-17 20:15:37 +02:00
tsc_64.c x86: unify timex.h variants 2007-10-12 23:04:23 +02:00
tsc_sync.c Delete filenames in comments. 2007-10-13 10:01:23 -07:00
verify_cpu_64.S x86_64: move kernel 2007-10-11 11:17:24 +02:00
vm86_32.c Delete filenames in comments. 2007-10-13 10:01:23 -07:00
vmi_32.c paravirt: clean up lazy mode handling 2007-10-16 11:51:29 -07:00
vmiclock_32.c i386: move kernel 2007-10-11 11:17:01 +02:00
vmlinux.lds.S i386: move kernel 2007-10-11 11:17:01 +02:00
vmlinux_32.lds.S i386: move kernel 2007-10-11 11:17:01 +02:00
vmlinux_64.lds.S x86_64: move kernel 2007-10-11 11:17:24 +02:00
vsmp_64.c x86_64: move kernel 2007-10-11 11:17:24 +02:00
vsyscall-int80_32.S i386: move kernel 2007-10-11 11:17:01 +02:00
vsyscall-note_32.S i386: move kernel 2007-10-11 11:17:01 +02:00
vsyscall-sigreturn_32.S i386: move kernel 2007-10-11 11:17:01 +02:00
vsyscall-sysenter_32.S i386: move kernel 2007-10-11 11:17:01 +02:00
vsyscall_32.lds.S i386: move kernel 2007-10-11 11:17:01 +02:00
vsyscall_32.S i386: move kernel 2007-10-11 11:17:01 +02:00
vsyscall_64.c x86: remove duplicated vsyscall nsec update 2007-10-17 20:17:02 +02:00
x8664_ksyms_64.c x86_64: move kernel 2007-10-11 11:17:24 +02:00