| Commit message (Collapse) | Author | Age | Files | Lines |
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Merge reason: we want to queue up a dependent patch.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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On larger systems, because of the numerous ACPI, Bootmem and EFI messages,
the static log buffer overflows before the larger one specified by the
log_buf_len param is allocated. Minimize the overflow by allocating the
new log buffer as soon as possible.
On kernels without memblock, a later call to setup_log_buf from
kernel/init.c is the fallback.
[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: fix CONFIG_PRINTK=n build]
Signed-off-by: Mike Travis <travis@sgi.com>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Jack Steiner <steiner@sgi.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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UEFI stands for "Unified Extensible Firmware Interface", where "Firmware"
is an ancient African word meaning "Why do something right when you can
do it so wrong that children will weep and brave adults will cower before
you", and "UEI" is Celtic for "We missed DOS so we burned it into your
ROMs". The UEFI specification provides for runtime services (ie, another
way for the operating system to be forced to depend on the firmware) and
we rely on these for certain trivial tasks such as setting up the
bootloader. But some hardware fails to work if we attempt to use these
runtime services from physical mode, and so we have to switch into virtual
mode. So far so dreadful.
The specification makes it clear that the operating system is free to do
whatever it wants with boot services code after ExitBootServices() has been
called. SetVirtualAddressMap() can't be called until ExitBootServices() has
been. So, obviously, a whole bunch of EFI implementations call into boot
services code when we do that. Since we've been charmingly naive and
trusted that the specification may be somehow relevant to the real world,
we've already stuffed a picture of a penguin or something in that address
space. And just to make things more entertaining, we've also marked it
non-executable.
This patch allocates the boot services regions during EFI init and makes
sure that they're executable. Then, after SetVirtualAddressMap(), it
discards them and everyone lives happily ever after. Except for the ones
who have to work on EFI, who live sad lives haunted by the knowledge that
someone's eventually going to write yet another firmware specification.
[ hpa: adding this to urgent with a stable tag since it fixes currently-broken
hardware. However, I do not know what the dependencies are and so I do
not know which -stable versions this may be a candidate for. ]
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Link: http://lkml.kernel.org/r/1306331593-28715-1-git-send-email-mjg@redhat.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: <stable@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (27 commits)
PCI: Don't use dmi_name_in_vendors in quirk
PCI: remove unused AER functions
PCI/sysfs: move bus cpuaffinity to class dev_attrs
PCI: add rescan to /sys/.../pci_bus/.../
PCI: update bridge resources to get more big ranges when allocating space (again)
KVM: Use pci_store/load_saved_state() around VM device usage
PCI: Add interfaces to store and load the device saved state
PCI: Track the size of each saved capability data area
PCI/e1000e: Add and use pci_disable_link_state_locked()
x86/PCI: derive pcibios_last_bus from ACPI MCFG
PCI: add latency tolerance reporting enable/disable support
PCI: add OBFF enable/disable support
PCI: add ID-based ordering enable/disable support
PCI hotplug: acpiphp: assume device is in state D0 after powering on a slot.
PCI: Set PCIE maxpayload for card during hotplug insertion
PCI/ACPI: Report _OSC control mask returned on failure to get control
x86/PCI: irq and pci_ids patch for Intel Panther Point DeviceIDs
PCI: handle positive error codes
PCI: check pci_vpd_pci22_wait() return
PCI: Use ICH6_GPIO_EN in ich6_lpc_acpi_gpio
...
Fix up trivial conflicts in include/linux/pci_ids.h: commit a6e5e2be4461
moved the intel SMBUS ID definitons to the i2c-i801.c driver.
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This workaround holds a dma32 buffer at early boot to prevent later
bootmem allocations from stealing it in the case of large RAM configs.
Now that x86 is using memblock, and the nobootmem wrapper does top-down
allocation, it's no longer necessary, so remove it.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, cpu: Fix detection of Celeron Covington stepping A1 and B0
Documentation, ABI: Update L3 cache index disable text
x86, AMD, cacheinfo: Fix L3 cache index disable checks
x86, AMD, cacheinfo: Fix fallout caused by max3 conversion
x86, cpu: Change NOP selection for certain Intel CPUs
x86, cpu: Clean up and unify the NOP selection infrastructure
x86, percpu: Use ASM_NOP4 instead of hardcoding P6_NOP4
x86, cpu: Move AMD Elan Kconfig under "Processor family"
Fix up trivial conflicts in alternative handling (commit dc326fca2b64
"x86, cpu: Clean up and unify the NOP selection infrastructure" removed
some hacky 5-byte instruction stuff, while commit d430d3d7e646 "jump
label: Introduce static_branch() interface" renamed HAVE_JUMP_LABEL to
CONFIG_JUMP_LABEL in the code that went away)
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Clean up and unify the NOP selection infrastructure:
- Make the atomic 5-byte NOP a part of the selection system.
- Pick NOPs once during early boot and then be done with it.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jason Baron <jbaron@redhat.com>
Link: http://lkml.kernel.org/r/1303166160-10315-3-git-send-email-hpa@linux.intel.com
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Restore the initialization of mmu_cr4_features during boot, which was
removed without comment in checkin e5f15b45ddf3afa2bbbb10c7ea34fb32b6de0a0e
x86: Cleanup highmap after brk is concluded
thereby breaking resume from hibernate. This restores previous
functionality in approximately the same place, and corrects the
reading of %cr4 on pre-CPUID hardware (%cr4 exists if and only if
CPUID is supported.)
However, part of the problem is that the hibernate suspend/resume
sequence should manage the save/restore of %cr4 explicitly.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <201104020154.57136.rjw@sisk.pl>
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setup_elfcorehdr and saved_max_pfn
The Xen PV drivers in a crashed HVM guest can not connect to the dom0
backend drivers because both frontend and backend drivers are still in
connected state. To run the connection reset function only in case of a
crashdump, the is_kdump_kernel() function needs to be available for the PV
driver modules.
Consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn into
kernel/crash_dump.c Also export elfcorehdr_addr to make is_kdump_kernel()
usable for modules.
Leave 'elfcorehdr' as early_param(). This changes powerpc from __setup()
to early_param(). It adds an address range check from x86 also on ia64
and powerpc.
[akpm@linux-foundation.org: additional #includes]
[akpm@linux-foundation.org: remove elfcorehdr_addr export]
[akpm@linux-foundation.org: fix for Tejun's mm/nobootmem.c changes]
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
xen: update mask_rw_pte after kernel page tables init changes
xen: set max_pfn_mapped to the last pfn mapped
x86: Cleanup highmap after brk is concluded
Fix up trivial onflict (added header file includes) in
arch/x86/mm/init_64.c
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Now cleanup_highmap actually is in two steps: one is early in head64.c
and only clears above _end; a second one is in init_memory_mapping() and
tries to clean from _brk_end to _end.
It should check if those boundaries are PMD_SIZE aligned but currently
does not.
Also init_memory_mapping() is called several times for numa or memory
hotplug, so we really should not handle initial kernel mappings there.
This patch moves cleanup_highmap() down after _brk_end is settled so
we can do everything in one step.
Also we honor max_pfn_mapped in the implementation of cleanup_highmap.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
LKML-Reference: <alpine.DEB.2.00.1103171739050.3382@kaball-desktop>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-trampoline-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Fix binutils-2.21 symbol related build failures
x86-64, trampoline: Remove unused variable
x86, reboot: Fix the use of passed arguments in 32-bit BIOS reboot
x86, reboot: Move the real-mode reboot code to an assembly file
x86: Make the GDT_ENTRY() macro in <asm/segment.h> safe for assembly
x86, trampoline: Use the unified trampoline setup for ACPI wakeup
x86, trampoline: Common infrastructure for low memory trampolines
Fix up trivial conflicts in arch/x86/kernel/Makefile
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Use the unified trampoline allocation setup to allocate and install
the ACPI wakeup code in low memory.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
LKML-Reference: <4D5DFBE4.7090104@intel.com>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Matthieu Castet <castet.matthieu@free.fr>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
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Common infrastructure for low memory trampolines. This code installs
the trampolines permanently in low memory very early. It also permits
multiple pieces of code to be used for this purpose.
This code also introduces a standard infrastructure for computing
symbol addresses in the trampoline code.
The only change to the actual SMP trampolines themselves is that the
64-bit trampoline has been made reusable -- the previous version would
overwrite the code with a status variable; this moves the status
variable to a separate location.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
LKML-Reference: <4D5DFBE4.7090104@intel.com>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Matthieu Castet <castet.matthieu@free.fr>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (27 commits)
x86: Clean up apic.c and apic.h
x86: Remove superflous goal definition of tsc_sync
x86: dt: Correct local apic documentation in device tree bindings
x86: dt: Cleanup local apic setup
x86: dt: Fix OLPC=y/INTEL_CE=n build
rtc: cmos: Add OF bindings
x86: ce4100: Use OF to setup devices
x86: ioapic: Add OF bindings for IO_APIC
x86: dtb: Add generic bus probe
x86: dtb: Add support for PCI devices backed by dtb nodes
x86: dtb: Add device tree support for HPET
x86: dtb: Add early parsing of IO_APIC
x86: dtb: Add irq domain abstraction
x86: dtb: Add a device tree for CE4100
x86: Add device tree support
x86: e820: Remove conditional early mapping in parse_e820_ext
x86: OLPC: Make OLPC=n build again
x86: OLPC: Remove extra OLPC_OPENFIRMWARE_DT indirection
x86: OLPC: Cleanup config maze completely
x86: OLPC: Hide OLPC_OPENFIRMWARE config switch
...
Fix up conflicts in arch/x86/platform/ce4100/ce4100.c
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Up to now we force enable the local apic in the devicetree setup
uncoditionally and set smp_found_config unconditionally to 1 when a
devicetree blob is available. This breaks, when local apic is disabled
in the Kconfig.
Make it consistent by initializing device tree explicitely before
smp_get_config() so a non lapic configuration could be used as well.
To be functional that would require to implement PIT as an interrupt
host, but the only user of this code until now is ce4100 which
requires apics to be available. So we leave this up to those who need
it.
Tested-by: Sebastian Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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This patch adds minimal support for device tree on x86. The device
tree blob is passed to the kernel via setup_data which requires at
least boot protocol 2.09.
Memory size, restricted memory regions, boot arguments are gathered
the traditional way so things like cmd_line are just here to let the
code compile.
The current plan is use the device tree as an extension and to gather
information which can not be enumerated and would have to be hardcoded
otherwise. This includes things like
- which devices are on this I2C/SPI bus?
- how are the interrupts wired to IO APIC?
- where could my hpet be?
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: sodaville@linutronix.de
Cc: devicetree-discuss@lists.ozlabs.org
LKML-Reference: <1298405266-1624-3-git-send-email-bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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This patch ensures that the memory passed from parse_setup_data() is
large enough to cover the complete data structure. That means that the
conditional mapping in parse_e820_ext() can go.
While here, I also attempt not to map two pages if the address is not
aligned to a page boundary.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Cc: sodaville@linutronix.de
Cc: devicetree-discuss@lists.ozlabs.org
LKML-Reference: <1298405266-1624-2-git-send-email-bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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into x86/platform
Reason: x86 devicetree support for ce4100 depends on those device tree
changes scheduled for .39.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Some wall clock devices use MMIO based HW register, this new
function will give them a chance to do some initialization work
before their get/set_time service get called, which is usually
in early kernel boot phase.
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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This patch reverts NUMA affine page table allocation added by commit
1411e0ec31 (x86-64, numa: Put pgtable to local node memory).
The commit made an undocumented change where the kernel linear mapping
strictly follows intersection of e820 memory map and NUMA
configuration. If the physical memory configuration has holes or NUMA
nodes are not properly aligned, this leads to using unnecessarily
smaller mapping size which leads to increased TLB pressure. For
details,
http://thread.gmane.org/gmane.linux.kernel/1104672
Patches to fix the problem have been proposed but the underlying code
needs more cleanup and the approach itself seems a bit heavy handed
and it has been determined to revert the feature for now and come back
to it in the next developement cycle.
http://thread.gmane.org/gmane.linux.kernel/1105959
As init_memory_mapping_high() callsites have been consolidated since
the commit, reverting is done manually. Also, the RED-PEN comment in
arch/x86/mm/init.c is not restored as the problem no longer exists
with memblock based top-down early memory allocation.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
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There's no reason for these to live in setup_arch(). Move them inside
initmem_init().
- v2: x86-32 initmem_init() weren't updated breaking 32bit builds.
Fixed. Found by Ankita.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Ankita Garg <ankita@in.ibm.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Shaohui Zheng <shaohui.zheng@intel.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: H. Peter Anvin <hpa@linux.intel.com>
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return value
Because of the way ACPI tables are parsed, the generic
acpi_numa_init() couldn't return failure when error was detected by
arch hooks. Instead, the failure state was recorded and later arch
dependent init hook - acpi_scan_nodes() - would fail.
Wrap acpi_numa_init() with x86_acpi_numa_init() so that failure can be
indicated as return value immediately. This is in preparation for
further NUMA init cleanups.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Shaohui Zheng <shaohui.zheng@intel.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: H. Peter Anvin <hpa@linux.intel.com>
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values
The functions used during NUMA initialization - *_numa_init() and
*_scan_nodes() - have different arguments and return values. Unify
them such that they all take no argument and return 0 on success and
-errno on failure. This is in preparation for further NUMA init
cleanups.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Shaohui Zheng <shaohui.zheng@intel.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: H. Peter Anvin <hpa@linux.intel.com>
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initmem_init() extensively accesses and modifies global data
structures and the parameters aren't even followed depending on which
path is being used. Drop @start/last_pfn and let it deal with
@max_pfn directly. This is in preparation for further NUMA init
cleanups.
- v2: x86-32 initmem_init() weren't updated breaking 32bit builds.
Fixed. Found by Yinghai.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Shaohui Zheng <shaohui.zheng@intel.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: H. Peter Anvin <hpa@linux.intel.com>
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Merge reason: consolidate it into the more generic x86/mm tree to prevent conflicts.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Now that everything else is unified, NUMA initialization can be
unified too.
* numa_init_array() and init_cpu_to_node() are moved from
numa_64 to numa.
* numa_32::initmem_init() is updated to call numa_init_array()
and setup_arch() to call init_cpu_to_node() on 32bit too.
* x86_cpu_to_node_map is now initialized to NUMA_NO_NODE on
32bit too. This is safe now as numa_init_array() will initialize
it early during boot.
This makes NUMA mapping fully initialized before
setup_per_cpu_areas() on 32bit too and thus makes the first
percpu chunk which contains all the static variables and some of
dynamic area allocated with NUMA affinity correctly considered.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: yinghai@kernel.org
Cc: brgerst@gmail.com
Cc: gorcunov@gmail.com
Cc: shaohui.zheng@intel.com
Cc: rientjes@google.com
LKML-Reference: <1295789862-25482-17-git-send-email-tj@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Reviewed-by: Pekka Enberg <penberg@kernel.org>
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Conflicts:
arch/x86/mm/numa_64.c
Merge reason: fix the conflict, update to latest -rc and pick up this
dependent fix from Yinghai:
e6d2e2b2b1e1: memblock: don't adjust size in memblock_find_base()
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Fix APIC ID sizing bug on larger systems, clean up MAX_APICS confusion
x86, acpi: Parse all SRAT cpu entries even above the cpu number limitation
x86, acpi: Add MAX_LOCAL_APIC for 32bit
x86: io_apic: Split setup_ioapic_ids_from_mpc()
x86: io_apic: Fix CONFIG_X86_IO_APIC=n breakage
x86: apic: Move probe_nr_irqs_gsi() into ioapic_init_mappings()
x86: Allow platforms to force enable apic
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Conflicts:
arch/x86/include/asm/io_apic.h
Merge reason: move to a fresh -rc, resolve the conflict.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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probe_br_irqs_gsi() is called right after ioapic_init_mappings() and
there are no other users. Move it into ioapic_init_mappings() so the
declaration can disappear and the function can become static.
Rename ioapic_init_mappings() to ioapic_and_gsi_init() to reflect that
change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
LKML-Reference: <1287510389-8388-2-git-send-email-dirk.brandewie@gmail.com>
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-amd-nb-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, cacheinfo: Cleanup L3 cache index disable support
x86, amd-nb: Cleanup AMD northbridge caching code
x86, amd-nb: Complete the rename of AMD NB and related code
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
perf probe: Fix to support libdwfl older than 0.148
perf tools: Fix lazy wildcard matching
perf buildid-list: Fix error return for success
perf buildid-cache: Fix symbolic link handling
perf symbols: Stop using vmlinux files with no symbols
perf probe: Fix use of kernel image path given by 'k' option
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, kexec: Limit the crashkernel address appropriately
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Keep the crash kernel address below 512 MiB for 32 bits and 896 MiB
for 64 bits. For 32 bits, this retains compatibility with earlier
kernel releases, and makes it work even if the vmalloc= setting is
adjusted.
For 64 bits, we should be able to increase this substantially once a
hard-coded limit in kexec-tools is fixed.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <20101217195035.GE14502@redhat.com>
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This reverts commit 1af3c2e45e7a641e774bbb84fa428f2f0bf2d9c9.
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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It is not related to init_memory_mapping(), and init_memory_mapping() is
getting more bigger.
So make it as seperated function and call it from reserve_brk() and that is
point when _brk_end is concluded.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4D1933E0.7090305@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Introduce init_memory_mapping_high(), and use it with 64bit.
It will go with every memory segment above 4g to create page table to the
memory range itself.
before this patch all page tables was on one node.
with this patch, one RED-PEN is killed
debug out for 8 sockets system after patch
[ 0.000000] initial memory mapped : 0 - 20000000
[ 0.000000] init_memory_mapping: [0x00000000000000-0x0000007f74ffff]
[ 0.000000] 0000000000 - 007f600000 page 2M
[ 0.000000] 007f600000 - 007f750000 page 4k
[ 0.000000] kernel direct mapping tables up to 7f750000 @ [0x7f74c000-0x7f74ffff]
[ 0.000000] RAMDISK: 7bc84000 - 7f745000
....
[ 0.000000] Adding active range (0, 0x10, 0x95) 0 entries of 3200 used
[ 0.000000] Adding active range (0, 0x100, 0x7f750) 1 entries of 3200 used
[ 0.000000] Adding active range (0, 0x100000, 0x1080000) 2 entries of 3200 used
[ 0.000000] Adding active range (1, 0x1080000, 0x2080000) 3 entries of 3200 used
[ 0.000000] Adding active range (2, 0x2080000, 0x3080000) 4 entries of 3200 used
[ 0.000000] Adding active range (3, 0x3080000, 0x4080000) 5 entries of 3200 used
[ 0.000000] Adding active range (4, 0x4080000, 0x5080000) 6 entries of 3200 used
[ 0.000000] Adding active range (5, 0x5080000, 0x6080000) 7 entries of 3200 used
[ 0.000000] Adding active range (6, 0x6080000, 0x7080000) 8 entries of 3200 used
[ 0.000000] Adding active range (7, 0x7080000, 0x8080000) 9 entries of 3200 used
[ 0.000000] init_memory_mapping: [0x00000100000000-0x0000107fffffff]
[ 0.000000] 0100000000 - 1080000000 page 2M
[ 0.000000] kernel direct mapping tables up to 1080000000 @ [0x107ffbd000-0x107fffffff]
[ 0.000000] memblock_x86_reserve_range: [0x107ffc2000-0x107fffffff] PGTABLE
[ 0.000000] init_memory_mapping: [0x00001080000000-0x0000207fffffff]
[ 0.000000] 1080000000 - 2080000000 page 2M
[ 0.000000] kernel direct mapping tables up to 2080000000 @ [0x207ff7d000-0x207fffffff]
[ 0.000000] memblock_x86_reserve_range: [0x207ffc0000-0x207fffffff] PGTABLE
[ 0.000000] init_memory_mapping: [0x00002080000000-0x0000307fffffff]
[ 0.000000] 2080000000 - 3080000000 page 2M
[ 0.000000] kernel direct mapping tables up to 3080000000 @ [0x307ff3d000-0x307fffffff]
[ 0.000000] memblock_x86_reserve_range: [0x307ffc0000-0x307fffffff] PGTABLE
[ 0.000000] init_memory_mapping: [0x00003080000000-0x0000407fffffff]
[ 0.000000] 3080000000 - 4080000000 page 2M
[ 0.000000] kernel direct mapping tables up to 4080000000 @ [0x407fefd000-0x407fffffff]
[ 0.000000] memblock_x86_reserve_range: [0x407ffc0000-0x407fffffff] PGTABLE
[ 0.000000] init_memory_mapping: [0x00004080000000-0x0000507fffffff]
[ 0.000000] 4080000000 - 5080000000 page 2M
[ 0.000000] kernel direct mapping tables up to 5080000000 @ [0x507febd000-0x507fffffff]
[ 0.000000] memblock_x86_reserve_range: [0x507ffc0000-0x507fffffff] PGTABLE
[ 0.000000] init_memory_mapping: [0x00005080000000-0x0000607fffffff]
[ 0.000000] 5080000000 - 6080000000 page 2M
[ 0.000000] kernel direct mapping tables up to 6080000000 @ [0x607fe7d000-0x607fffffff]
[ 0.000000] memblock_x86_reserve_range: [0x607ffc0000-0x607fffffff] PGTABLE
[ 0.000000] init_memory_mapping: [0x00006080000000-0x0000707fffffff]
[ 0.000000] 6080000000 - 7080000000 page 2M
[ 0.000000] kernel direct mapping tables up to 7080000000 @ [0x707fe3d000-0x707fffffff]
[ 0.000000] memblock_x86_reserve_range: [0x707ffc0000-0x707fffffff] PGTABLE
[ 0.000000] init_memory_mapping: [0x00007080000000-0x0000807fffffff]
[ 0.000000] 7080000000 - 8080000000 page 2M
[ 0.000000] kernel direct mapping tables up to 8080000000 @ [0x807fdfc000-0x807fffffff]
[ 0.000000] memblock_x86_reserve_range: [0x807ffbf000-0x807fffffff] PGTABLE
[ 0.000000] Initmem setup node 0 [0000000000000000-000000107fffffff]
[ 0.000000] NODE_DATA [0x0000107ffbd000-0x0000107ffc1fff]
[ 0.000000] Initmem setup node 1 [0000001080000000-000000207fffffff]
[ 0.000000] NODE_DATA [0x0000207ffbb000-0x0000207ffbffff]
[ 0.000000] Initmem setup node 2 [0000002080000000-000000307fffffff]
[ 0.000000] NODE_DATA [0x0000307ffbb000-0x0000307ffbffff]
[ 0.000000] Initmem setup node 3 [0000003080000000-000000407fffffff]
[ 0.000000] NODE_DATA [0x0000407ffbb000-0x0000407ffbffff]
[ 0.000000] Initmem setup node 4 [0000004080000000-000000507fffffff]
[ 0.000000] NODE_DATA [0x0000507ffbb000-0x0000507ffbffff]
[ 0.000000] Initmem setup node 5 [0000005080000000-000000607fffffff]
[ 0.000000] NODE_DATA [0x0000607ffbb000-0x0000607ffbffff]
[ 0.000000] Initmem setup node 6 [0000006080000000-000000707fffffff]
[ 0.000000] NODE_DATA [0x0000707ffbb000-0x0000707ffbffff]
[ 0.000000] Initmem setup node 7 [0000007080000000-000000807fffffff]
[ 0.000000] NODE_DATA [0x0000807ffba000-0x0000807ffbefff]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4D1933D1.9020609@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Move it into head file. to prepare use it in other files.
[ hpa: added missing <linux/types.h> and changed type to phys_addr_t. ]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4D1933BA.8000508@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Not only the naming of the files was confusing, it was even more so for
the function and variable names.
Renamed the K8 NB and NUMA stuff that is also used on other AMD
platforms. This also renames the CONFIG_K8_NUMA option to
CONFIG_AMD_NUMA and the related file k8topology_64.c to
amdtopology_64.c. No functional changes intended.
Signed-off-by: Hans Rosenfeld <hans.rosenfeld@amd.com>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (27 commits)
x86: allocate space within a region top-down
x86: update iomem_resource end based on CPU physical address capabilities
x86/PCI: allocate space from the end of a region, not the beginning
PCI: allocate bus resources from the top down
resources: support allocating space within a region from the top down
resources: handle overflow when aligning start of available area
resources: ensure callback doesn't allocate outside available space
resources: factor out resource_clip() to simplify find_resource()
resources: add a default alignf to simplify find_resource()
x86/PCI: MMCONFIG: fix region end calculation
PCI: Add support for polling PME state on suspended legacy PCI devices
PCI: Export some PCI PM functionality
PCI: fix message typo
PCI: log vendor/device ID always
PCI: update Intel chipset names and defines
PCI: use new ccflags variable in Makefile
PCI: add PCI_MSIX_TABLE/PBA defines
PCI: add PCI vendor id for STmicroelectronics
x86/PCI: irq and pci_ids patch for Intel Patsburg DeviceIDs
PCI: OLPC: Only enable PCI configuration type override on XO-1
...
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Request that allocate_resource() use available space from high addresses
first, rather than the default of using low addresses first.
The most common place this makes a difference is when we move or assign
new PCI device resources. Low addresses are generally scarce, so it's
better to use high addresses when possible. This follows Windows practice
for PCI allocation.
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=16228#c42
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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The iomem_resource map reflects the available physical address space.
We statically initialize the end to -1, i.e., 0xffffffff_ffffffff, but
of course we can only use as much as the CPU can address.
This patch updates the end based on the CPU capabilities, so we don't
mistakenly allocate space that isn't usable, as we're likely to do when
allocating from the top-down.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-trampoline-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86-32, mm: Add an initial page table for core bootstrapping
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This patch adds an initial page table with low mappings used exclusively
for booting APs/resuming after ACPI suspend/machine restart. After this,
there's no need to add low mappings to swapper_pg_dir and zap them later
or create own swsusp PGD page solely for ACPI sleep needs - we have
initial_page_table for that.
Signed-off-by: Borislav Petkov <bp@alien8.de>
LKML-Reference: <20101020070526.GA9588@liondog.tnic>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-memblock-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (74 commits)
x86-64: Only set max_pfn_mapped to 512 MiB if we enter via head_64.S
xen: Cope with unmapped pages when initializing kernel pagetable
memblock, bootmem: Round pfn properly for memory and reserved regions
memblock: Annotate memblock functions with __init_memblock
memblock: Allow memblock_init to be called early
memblock/arm: Fix memblock_region_is_memory() typo
x86, memblock: Remove __memblock_x86_find_in_range_size()
memblock: Fix wraparound in find_region()
x86-32, memblock: Make add_highpages honor early reserved ranges
x86, memblock: Fix crashkernel allocation
arm, memblock: Fix the sparsemem build
memblock: Fix section mismatch warnings
powerpc, memblock: Fix memblock API change fallout
memblock, microblaze: Fix memblock API change fallout
x86: Remove old bootmem code
x86, memblock: Use memblock_memory_size()/memblock_free_memory_size() to get correct dma_reserve
x86: Remove not used early_res code
x86, memblock: Replace e820_/_early string with memblock_
x86: Use memblock to replace early_res
x86, memblock: Use memblock_debug to control debug message print out
...
Fix up trivial conflicts in arch/x86/kernel/setup.c and kernel/Makefile
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head_64.S maps up to 512 MiB, but that is not necessarity true for
other entry paths, such as Xen.
Thus, co-locate the setting of max_pfn_mapped with the code to
actually set up the page tables in head_64.S. The 32-bit code is
already so co-located. (The Xen code already sets max_pfn_mapped
correctly for its own use case.)
-v2:
Yinghai fixed the following bug in this patch:
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| max_pfn_mapped is in .bss section, so we need to set that
| after bss get cleared. Without that we crash on bootup.
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| That is safe because Xen does not call x86_64_start_kernel().
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Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Fixed-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
LKML-Reference: <4CB6AB24.9020504@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Cai Qian found crashkernel is broken with the x86 memblock changes.
1. crashkernel=128M@32M always reported that range is used, even if
the first kernel is small and does not usethat range
2. we always got following report when using "kexec -p"
Could not find a free area of memory of a000 bytes...
locate_hole failed
The root cause is that generic memblock_find_in_range() will try to
allocate from the top of the range, whereas the kexec code was written
assuming that allocation was always near the bottom and that it could
blindly extend memory upward. Unfortunately the kexec code doesn't
have a system for requesting the range that it really needs, so this
is subject to probabilistic failures.
This patch hacks around the problem by limiting the target range
heuristically to below the traditional bzImage max range. This number
is arbitrary and not always correct, and a much better result would be
obtained by having kexec communicate this number based on the kernel
header information and any appropriate command line options.
Reported-and-Bisected-by: CAI Qian <caiqian@redhat.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4CABAF2A.5090501@kernel.org>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Conflicts:
arch/x86/kernel/trampoline.c
mm/memblock.c
Merge reason: Resolve the conflicts, update to latest upstream.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Requested by Ingo, Thomas and HPA.
The old bootmem code is no longer necessary, and the transition is
complete. Remove it.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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