swsusp allocates memory from the normal zone, so it cannot use lowmem
reserve pages from the lower zones. Therefore it should not count these
pages as available to it.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Pages (Reserved/ACPI NVS/ACPI Data) below end_pfn will be saved/restored by S4
currently. We should mark 'Reserved' pages not saveable.
Pages (Reserved/ACPI NVS/ACPI Data) above end_pfn will not be saved/restored
by S4 currently. We should save the 'ACPI NVS/ACPI Data' pages.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Nigel Cunningham <nigel@suspend2.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Pages (Reserved/ACPI NVS/ACPI Data) below max_low_pfn will be saved/restored
by S4 currently. We should mark 'Reserved' pages not saveable.
Pages (Reserved/ACPI NVS/ACPI Data) above max_low_pfn will not be
saved/restored by S4 currently. We should save the 'ACPI NVS/ACPI Data'
pages.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Nigel Cunningham <nigel@suspend2.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1. Add architecture specific pages save/restore support. Next two patches
will use this to save/restore 'ACPI NVS' pages.
2. Allow reserved pages 'nosave'. This could avoid save/restore BIOS
reserved pages.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Nigel Cunningham <nigel@suspend2.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
compile fix: <asm-i386/alternative.h> needs <asm/types.h> for 'u8' --
just look at struct alt_instr.
My module includes <asm/bitops.h> as the first header, and as of 2.6.17 this
leads to compilation errors.
Signed-off-by: Kirill Smelkov <kirr@mns.spb.ru>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
New CPU flags for next generation of crypto engine as found in VIA C7
processors.
Signed-off-by: Michal Ludvig <michal@logix.cz>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Sometimes thread_info and task_struct get out-of-sync with each other.
Printing task.thread_info in show_registers() can help spot this. And when
task_struct is corrupt then task.comm can contain garbage, so only print as
many characters as it can hold.
Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We need to check for vm86 mode first before looking at selector privilege
bits.
Segment limit is always base + 64k and only the low 16 bits of EIP are
significant in vm86 mode.
Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Zachary Amsden <zach@vmware.com>
Cc: Rohit Seth <rohitseth@google.com>
Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Use proper defines instead of open-coded values.
Signed-off-by: Andreas Mohr <andi@lisas.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
constify structs and add one __initdata.
Signed-off-by: Andreas Mohr <andi@lisas.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
PCI code was outside of CONFIG_PCI, add __initdata at cyrix_55x0 (since
accessed within __init function only).
Signed-off-by: Andreas Mohr <andi@lisas.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The i386 page fault handler does not allow enough slack when checking for
userspace access below the current stack pointer. This prevents use of the
enter instruction by user code. Fix this by allowing enough slack for
"enter $65535,$31" to execute.
Problem reported by Tomasz Malesinski <tmal@mimuw.edu.pl>
Tested using this program, based on the original from Tomasz:
.file "ovflow.S"
.version "01.01"
gcc2_compiled.:
.section .rodata
.LC0:
.string "asdf\n"
.text
.align 4
.globl main
.type main,@function
main:
nest_level=0
.rept 30
enter $0,$nest_level
nest_level=nest_level+1
.endr
enter $65535,$30
enter $65535,$31
addl $-12,%esp
pushl $.LC0
call printf
addl $16,%esp
.L2:
.rept 32
leave
.endr
ret
.Lfe1:
.size main,.Lfe1-main
.ident "GCC: (GNU) 2.95.4 20011002 (Debian prerelease)"
Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
On i386, kernel irq balance doesn't work.
1) In function do_irq_balance, after kernel finds the min_loaded cpu but
before calling set_pending_irq to really pin the selected_irq to the
target cpu, kernel does a cpus_and with irq_affinity[selected_irq].
Later on, when the irq is acked, kernel would calls
move_native_irq=>desc->handler->set_affinity to change the irq affinity.
However, every function pointed by
hw_interrupt_type->set_affinity(unsigned int irq, cpumask_t cpumask)
always changes irq_affinity[irq] to cpumask. Next time when recalling
do_irq_balance, it has to do cpu_ands again with
irq_affinity[selected_irq], but irq_affinity[selected_irq] already
becomes one cpu selected by the first irq balance.
2) Function balance_irq in file arch/i386/kernel/io_apic.c has the same
issue.
[akpm@osdl.org: cleanups]
Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
If CONFIG_FRAME_POINTERS is enabled, and one does a dump_stack() during
early SMP init, an infinite stackdump and a bootup hang happens:
[<c0104e7f>] show_trace+0xd/0xf
[<c0104e96>] dump_stack+0x15/0x17
[<c01440df>] save_trace+0xc3/0xce
[<c014527d>] mark_lock+0x8c/0x4fe
[<c0145df5>] __lockdep_acquire+0x44e/0xaa5
[<c0146798>] lockdep_acquire+0x68/0x84
[<c1048699>] _spin_lock+0x21/0x2f
[<c010d918>] prepare_set+0xd/0x5d
[<c010daa8>] generic_set_all+0x1d/0x201
[<c010ca9a>] mtrr_ap_init+0x23/0x3b
[<c010ada8>] identify_cpu+0x2a7/0x2af
[<c01192a7>] smp_store_cpu_info+0x2f/0xb4
[<c01197d0>] start_secondary+0xb5/0x3ec
[<c104ec11>] end_of_stack_stop_unwind_function+0x1/0x4
[<c104ec11>] end_of_stack_stop_unwind_function+0x1/0x4
[<c104ec11>] end_of_stack_stop_unwind_function+0x1/0x4
[<c104ec11>] end_of_stack_stop_unwind_function+0x1/0x4
[<c104ec11>] end_of_stack_stop_unwind_function+0x1/0x4
[<c104ec11>] end_of_stack_stop_unwind_function+0x1/0x4
[<c104ec11>] end_of_stack_stop_unwind_function+0x1/0x4
[<c104ec11>] end_of_stack_stop_unwind_function+0x1/0x4
[...]
Due to "end_of_stack_stop_unwind_function" recursing back to itself in the
EBP stackframe-walker. So avoid this type of recursion when walking the
stack .
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
When multiple updates matching a given CPU are found in the update file, the
action taken by the microcode update driver was inappropriate:
- when lower revision microcode was found before matching or higher revision
one, the driver would needlessly complain that it would not downgrade the
CPU
- when microcode matching the currently installed revision was found before
newer revision code, no update would actually take place
To change this behavior, the driver now concludes about possibly updates and
issues messages only when the entire input was parsed.
Additionally, this adds back (in different places, and conditionalized upon
a new module option) some messages removed by a previous patch.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com>
Cc: Tigran Aivazian <tigran_aivazian@symantec.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Only drm, framebuffer, mtrr parts + misc files here and there.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
- avoid expensive modulo (integer division) which happened
since APM_MAX_EVENTS is 20 (non-power-of-2)
- kill compiler warnings by initializing two variables
- add __read_mostly to some important static variables that are read often
(by idle loop etc.)
- constify several structures
Signed-off-by: Andreas Mohr <andi@lisas.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rafael J. Wysocki
Shaohua Li
Mathieu Chouquet-Stringer
Kirill Smelkov
Michal Ludvig
Chuck Ebbert
Roman Zippel
Zachary Amsden
Andreas Mohr
Zhang Yanmin
Linus Torvalds
Alexey Dobriyan
Ingo Molnar
Jan Beulich