16 Aug, 2011
1 commit
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Commit 3ae36655b97a03fa1decf72f04078ef945647c1a (x86-64: Rework vsyscall
emulation and add vsyscall= parameter) removed the special use of the
0xcc IDT vector.Remove it from Documentation/x86/entry_64.txt also.
Signed-off-by: Cesar Eduardo Barros
Acked-by: Andy Lutomirski
Link: http://lkml.kernel.org/r/1313447210-9149-1-git-send-email-cesarb@cesarb.net
Signed-off-by: H. Peter Anvin
23 Jul, 2011
1 commit
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* 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86-64, vdso: Do not allocate memory for the vDSO
clocksource: Change __ARCH_HAS_CLOCKSOURCE_DATA to a CONFIG option
x86, vdso: Drop now wrong comment
Document the vDSO and add a reference parser
ia64: Replace clocksource.fsys_mmio with generic arch data
x86-64: Move vread_tsc and vread_hpet into the vDSO
clocksource: Replace vread with generic arch data
x86-64: Add --no-undefined to vDSO build
x86-64: Allow alternative patching in the vDSO
x86: Make alternative instruction pointers relative
x86-64: Improve vsyscall emulation CS and RIP handling
x86-64: Emulate legacy vsyscalls
x86-64: Fill unused parts of the vsyscall page with 0xcc
x86-64: Remove vsyscall number 3 (venosys)
x86-64: Map the HPET NX
x86-64: Remove kernel.vsyscall64 sysctl
x86-64: Give vvars their own page
x86-64: Document some of entry_64.S
x86-64: Fix alignment of jiffies variable
13 Jul, 2011
1 commit
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The real-mode kernel header init_size field is located at 0x260 per the field
listing in th e"REAL-MODE KERNEL HEADER" section. It is listed as 0x25c in
the "DETAILS OF HEADER FIELDS" section, which overlaps with pref_address.
Correct the details listing to 0x260.Signed-off-by: Darren Hart
Link: http://lkml.kernel.org/r/541cf88e2dfe5b8186d8b96b136d892e769a68c1.1310441260.git.dvhart@linux.intel.com
CC: H. Peter Anvin
Signed-off-by: H. Peter Anvin
06 Jun, 2011
1 commit
-
Signed-off-by: Andy Lutomirski
Cc: Jesper Juhl
Cc: Borislav Petkov
Cc: Linus Torvalds
Cc: Arjan van de Ven
Cc: Jan Beulich
Cc: richard -rw- weinberger
Cc: Mikael Pettersson
Cc: Andi Kleen
Cc: Brian Gerst
Cc: Louis Rilling
Cc: Valdis.Kletnieks@vt.edu
Cc: pageexec@freemail.hu
Link: http://lkml.kernel.org/r/fc134867cc550977cc996866129e11a16ba0f9ea.1307292171.git.luto@mit.edu
Signed-off-by: Ingo Molnar
10 May, 2011
1 commit
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This file only contains code relevant for the northbridge
gart in AMD processors. This patch renames the file to
represent this fact in the filename.Signed-off-by: Joerg Roedel
23 Mar, 2011
1 commit
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The oops=panic cmdline option is not x86 specific, move it to generic code.
Update documentation.Signed-off-by: Olaf Hering
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: "H. Peter Anvin"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
18 Mar, 2011
1 commit
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Fix 'upto' misspelling and align parameters.
Signed-off-by: Lucas De Marchi
Cc: trivial@kernel.org
LKML-Reference:
Signed-off-by: Ingo Molnar
14 Jan, 2011
1 commit
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This integrates the XZ decompression code to the x86 pre-boot code.
mkpiggy.c is updated to reserve about 32 KiB more buffer safety margin for
kernel decompression. It is done unconditionally for all decompressors to
keep the code simpler.The XZ decompressor needs around 30 KiB of heap, so the heap size is
increased to 32 KiB on both x86-32 and x86-64.Documentation/x86/boot.txt is updated to list the XZ magic number.
With the x86 BCJ filter in XZ, XZ-compressed x86 kernel tends to be a few
percent smaller than the equivalent LZMA-compressed kernel.Signed-off-by: Lasse Collin
Cc: "H. Peter Anvin"
Cc: Alain Knaff
Cc: Albin Tonnerre
Cc: Phillip Lougher
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
12 Nov, 2010
1 commit
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Add CE4100 platform support. CE4100 needs early setup like
moorestown.Signed-off-by: Thomas Gleixner
Signed-off-by: Dirk Brandewie
LKML-Reference:
Signed-off-by: Thomas Gleixner
22 Oct, 2010
1 commit
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* 'x86-irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, 32-bit: Align percpu area and irq stacks to THREAD_SIZE
x86: Move alloc_desk_mask variables inside ifdef
x86-32: Align IRQ stacks properly
x86: Remove CONFIG_4KSTACKS
x86: Always use irq stacksFixed up trivial conflicts in include/linux/{irq.h, percpu-defs.h}
29 Jun, 2010
1 commit
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IRQ stacks provide much better safety against unexpected stack use from
interrupts, at the minimal downside of slightly higher memory usage.
Enable irq stacks also for the default 8k stack on 32-bit kernels to
minimize the problem of stack overflows through interrupt activity.This is what the 64-bit kernel and various other architectures already do.
Signed-off-by: Christoph Hellwig
LKML-Reference:
Signed-off-by: Thomas Gleixner
19 Jun, 2010
1 commit
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Add support for saving OFW's cif, and later calling into it to run OFW
commands. OFW remains resident in memory, living within virtual range
0xff800000 - 0xffc00000. A single page directory entry points to the
pgdir that OFW actually uses, so rather than saving the entire page
table, we grab and install that one entry permanently in the kernel's
page table.This is currently only used by the OLPC XO. Note that this particular
calling convention breaks PAE and PAT, and so cannot be used on newer
x86 hardware.Signed-off-by: Andres Salomon
LKML-Reference:
Signed-off-by: H. Peter Anvin
16 Feb, 2010
2 commits
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Now that numa=fake=[MG] is implemented, it is possible to remove
configurable node size support. The command-line parsing was already
broken (numa=fake=*128, for example, would not work) and since fake nodes
are now interleaved over physical nodes, this support is no longer
required.Signed-off-by: David Rientjes
LKML-Reference:
Signed-off-by: H. Peter Anvin -
numa=fake=N specifies the number of fake nodes, N, to partition the
system into and then allocates them by interleaving over physical nodes.
This requires knowledge of the system capacity when attempting to
allocate nodes of a certain size: either very large nodes to benchmark
scalability of code that operates on individual nodes, or very small
nodes to find bugs in the VM.This patch introduces numa=fake=[MG] so it is possible to specify
the size of each node to allocate. When used, nodes of the size
specified will be allocated and interleaved over the set of physical
nodes.FAKE_NODE_MIN_SIZE was also moved to the more-appropriate
include/asm/numa_64.h.Signed-off-by: David Rientjes
LKML-Reference:
Signed-off-by: H. Peter Anvin
23 Sep, 2009
1 commit
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Add missing information about requirements of using the EHCI usb debug
controller as well as to mention you can use a debug controller other
than the first one in the system.Signed-off-by: Jason Wessel
Cc: Ingo Molnar
Cc: Andrew Morton
Cc: Yinghai Lu
Cc: "Eric W. Biederman"
Cc: Alan Stern
Cc: Sarah Sharp
Cc: Randy Dunlap
Signed-off-by: Greg Kroah-Hartman
19 Sep, 2009
1 commit
-
…el/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: (38 commits)
x86: Move get/set_wallclock to x86_platform_ops
x86: platform: Fix section annotations
x86: apic namespace cleanup
x86: Distangle ioapic and i8259
x86: Add Moorestown early detection
x86: Add hardware_subarch ID for Moorestown
x86: Add early platform detection
x86: Move tsc_init to late_time_init
x86: Move tsc_calibration to x86_init_ops
x86: Replace the now identical time_32/64.c by time.c
x86: time_32/64.c unify profile_pc
x86: Move calibrate_cpu to tsc.c
x86: Make timer setup and global variables the same in time_32/64.c
x86: Remove mca bus ifdef from timer interrupt
x86: Simplify timer_ack magic in time_32.c
x86: Prepare unification of time_32/64.c
x86: Remove do_timer hook
x86: Add timer_init to x86_init_ops
x86: Move percpu clockevents setup to x86_init_ops
x86: Move xen_post_allocator_init into xen_pagetable_setup_done
...Fix up conflicts in arch/x86/include/asm/io_apic.h
31 Aug, 2009
1 commit
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x86 bootprotocol 2.07 has introduced hardware_subarch ID in the boot
parameters provided by FW. We use it to identify Moorestown platforms.[ tglx: Cleanup and paravirt fix ]
Signed-off-by: Jacob Pan
Signed-off-by: Thomas Gleixner
22 Jul, 2009
1 commit
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This patch adds kernel configuration and boot support for Intel Trusted
Execution Technology (Intel TXT).Intel's technology for safer computing, Intel Trusted Execution
Technology (Intel TXT), defines platform-level enhancements that
provide the building blocks for creating trusted platforms.Intel TXT was formerly known by the code name LaGrande Technology (LT).
Intel TXT in Brief:
o Provides dynamic root of trust for measurement (DRTM)
o Data protection in case of improper shutdown
o Measurement and verification of launched environmentIntel TXT is part of the vPro(TM) brand and is also available some
non-vPro systems. It is currently available on desktop systems based on
the Q35, X38, Q45, and Q43 Express chipsets (e.g. Dell Optiplex 755, HP
dc7800, etc.) and mobile systems based on the GM45, PM45, and GS45
Express chipsets.For more information, see http://www.intel.com/technology/security/.
This site also has a link to the Intel TXT MLE Developers Manual, which
has been updated for the new released platforms.A much more complete description of how these patches support TXT, how to
configure a system for it, etc. is in the Documentation/intel_txt.txt file
in this patch.This patch provides the TXT support routines for complete functionality,
documentation for TXT support and for the changes to the boot_params structure,
and boot detection of a TXT launch. Attempts to shutdown (reboot, Sx) the system
will result in platform resets; subsequent patches will support these shutdown modes
properly.Documentation/intel_txt.txt | 210 +++++++++++++++++++++
Documentation/x86/zero-page.txt | 1
arch/x86/include/asm/bootparam.h | 3
arch/x86/include/asm/fixmap.h | 3
arch/x86/include/asm/tboot.h | 197 ++++++++++++++++++++
arch/x86/kernel/Makefile | 1
arch/x86/kernel/setup.c | 4
arch/x86/kernel/tboot.c | 379 +++++++++++++++++++++++++++++++++++++++
security/Kconfig | 30 +++
9 files changed, 827 insertions(+), 1 deletion(-)Signed-off-by: Joseph Cihula
Signed-off-by: Shane Wang
Signed-off-by: Gang Wei
Signed-off-by: H. Peter Anvin
11 Jul, 2009
1 commit
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exception.txt only explains the code on x86, so it's better to
move it into Documentation/x86 directory.And also rename it to exception-tables.txt which looks much
more reasonable.This patch is on top of the previous one.
Signed-off-by: WANG Cong
Signed-off-by: Randy Dunlap
Signed-off-by: Linus Torvalds
12 Jun, 2009
1 commit
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Conflicts:
arch/x86/kernel/cpu/mcheck/mce_64.c
arch/x86/kernel/irq.cMerge reason: Resolve the conflicts above.
Signed-off-by: Ingo Molnar
11 Jun, 2009
2 commits
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This patch introduces three boot options (no_cmci, dont_log_ce
and ignore_ce) to control handling for corrected errors.The "mce=no_cmci" boot option disables the CMCI feature.
Since CMCI is a new feature so having boot controls to disable
it will be a help if the hardware is misbehaving.The "mce=dont_log_ce" boot option disables logging for corrected
errors. All reported corrected errors will be cleared silently.
This option will be useful if you never care about corrected
errors.The "mce=ignore_ce" boot option disables features for corrected
errors, i.e. polling timer and cmci. All corrected events are
not cleared and kept in bank MSRs.Usually this disablement is not recommended, however it will be
a help if there are some conflict with the BIOS or hardware
monitoring applications etc., that clears corrected events in
banks instead of OS.[ And trivial cleanup (space -> tab) for doc is included. ]
Signed-off-by: Hidetoshi Seto
Reviewed-by: Andi Kleen
LKML-Reference:
Signed-off-by: Ingo Molnar -
* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (22 commits)
x86: fix system without memory on node0
x86, mm: Fix node_possible_map logic
mm, x86: remove MEMORY_HOTPLUG_RESERVE related code
x86: make sparse mem work in non-NUMA mode
x86: process.c, remove useless headers
x86: merge process.c a bit
x86: use sparse_memory_present_with_active_regions() on UMA
x86: unify 64-bit UMA and NUMA paging_init()
x86: Allow 1MB of slack between the e820 map and SRAT, not 4GB
x86: Sanity check the e820 against the SRAT table using e820 map only
x86: clean up and and print out initial max_pfn_mapped
x86/pci: remove rounding quirk from e820_setup_gap()
x86, e820, pci: reserve extra free space near end of RAM
x86: fix typo in address space documentation
x86: 46 bit physical address support on 64 bits
x86, mm: fault.c, use printk_once() in is_errata93()
x86: move per-cpu mmu_gathers to mm/init.c
x86: move max_pfn_mapped and max_low_pfn_mapped to setup.c
x86: unify noexec handling
x86: remove (null) in /sys kernel_page_tables
...
04 Jun, 2009
1 commit
-
On Intel platforms machine check exceptions are always broadcast to
all CPUs. This patch makes the machine check handler synchronize all
these machine checks, elect a Monarch to handle the event and collect
the worst event from all CPUs and then process it first.This has some advantages:
- When there is a truly data corrupting error the system panics as
quickly as possible. This improves containment of corrupted
data and makes sure the corrupted data never hits stable storage.- The panics are synchronized and do not reenter the panic code
on multiple CPUs (which currently does not handle this well).- All the errors are reported. Currently it often happens that
another CPU happens to do the panic first, but reports useless
information (empty machine check) because the real error
happened on another CPU which came in later.
This is a big advantage on Nehalem where the 8 threads per CPU
lead to often the wrong CPU winning the race and dumping
useless information on a machine check. The problem also occurs
in a less severe form on older CPUs.- The system can detect when no CPUs detected a machine check
and shut down the system. This can happen when one CPU is so
badly hung that that it cannot process a machine check anymore
or when some external agent wants to stop the system by
asserting the machine check pin. This follows Intel hardware
recommendations.- This matches the recommended error model by the CPU designers.
- The events can be output in true severity order
- When a panic happens on another CPU it makes sure to be actually
be able to process the stop IPI by enabling interrupts.The code is extremly careful to handle timeouts while waiting
for other CPUs. It can't rely on the normal timing mechanisms
(jiffies, ktime_get) because of its asynchronous/lockless nature,
so it uses own timeouts using ndelay() and a "SPINUNIT"The timeout is configurable. By default it waits for upto one
second for the other CPUs. This can be also disabled.From some informal testing AMD systems do not see to broadcast
machine checks, so right now it's always disabled by default on
non Intel CPUs or also on very old Intel systems.Includes fixes from Ying Huang
Fixed a "ecception" in a comment (H.Seto)
Moved global_nwo reset later based on suggestion from H.Seto
v2: Avoid duplicate messages[ Impact: feature, fixes long standing problems. ]
Signed-off-by: Andi Kleen
Signed-off-by: Hidetoshi Seto
Signed-off-by: H. Peter Anvin
29 May, 2009
1 commit
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Document that check_interval set to 0 means no polling.
Noticed by Hidetoshi SetoAlso add a reference from boot options to the sysfs tunables
Acked-by: Hidetoshi Seto
Signed-off-by: Andi Kleen
Signed-off-by: Hidetoshi Seto
Signed-off-by: H. Peter Anvin
18 May, 2009
1 commit
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after:
| commit b263295dbffd33b0fbff670720fa178c30e3392a
| Author: Christoph Lameter
| Date: Wed Jan 30 13:30:47 2008 +0100
|
| x86: 64-bit, make sparsemem vmemmap the only memory modelwe don't have MEMORY_HOTPLUG_RESERVE anymore.
Historically, x86-64 had an architecture-specific method for memory hotplug
whereby it scanned the SRAT for physical memory ranges that could be
potentially used for memory hot-add later. By reserving those ranges
without physical memory, the memmap would be allocated and left dormant
until needed. This depended on the DISCONTIG memory model which has been
removed so the code implementing HOTPLUG_RESERVE is now dead.This patch removes the dead code used by MEMORY_HOTPLUG_RESERVE.
(Changelog authored by Mel.)
v2: updated changelog, and remove hotadd= in doc
[ Impact: remove dead code ]
Signed-off-by: Yinghai Lu
Reviewed-by: Christoph Lameter
Reviewed-by: Mel Gorman
Workflow-found-OK-by: Andrew Morton
LKML-Reference:
Signed-off-by: Ingo Molnar
12 May, 2009
2 commits
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A long ago, in days of yore, it all began with a god named Thor.
There were vikings and boats and some plans for a Linux kernel
header. Unfortunately, a single 8-bit field was used for bootloader
type and version. This has generally worked without *too* much pain,
but we're getting close to flat running out of ID fields.Add extension fields for both type and version. The type will be
extended if it the old field is 0xE; the version is a simple MSB
extension.Keep /proc/sys/kernel/bootloader_type containing
(type << 4) + (ver & 0xf) for backwards compatiblity, but also add
/proc/sys/kernel/bootloader_version which contains the full version
number.[ Impact: new feature to support more bootloaders ]
Signed-off-by: H. Peter Anvin
-
Document the new bzImage fields for kernel memory placement.
[ Impact: adds documentation ]
Signed-off-by: H. Peter Anvin
06 May, 2009
2 commits
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Fix a trivial typo in Documentation/x86/x86_64/mm.txt.
[ Impact: documentation only ]
Signed-off-by: H. Peter Anvin
Cc: Rik van Riel -
Extend the maximum addressable memory on x86-64 from 2^44 to
2^46 bytes. This requires some shuffling around of the vmalloc
and virtual memmap memory areas, to keep them away from the
direct mapping of up to 64TB of physical memory.This patch also introduces a guard hole between the vmalloc
area and the virtual memory map space. There's really no
good reason why we wouldn't have a guard hole there.[ Impact: future hardware enablement ]
Signed-off-by: Rik van Riel
LKML-Reference:
Signed-off-by: H. Peter Anvin
04 Apr, 2009
1 commit
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (28 commits)
trivial: Update my email address
trivial: NULL noise: drivers/mtd/tests/mtd_*test.c
trivial: NULL noise: drivers/media/dvb/frontends/drx397xD_fw.h
trivial: Fix misspelling of "Celsius".
trivial: remove unused variable 'path' in alloc_file()
trivial: fix a pdlfush -> pdflush typo in comment
trivial: jbd header comment typo fix for JBD_PARANOID_IOFAIL
trivial: wusb: Storage class should be before const qualifier
trivial: drivers/char/bsr.c: Storage class should be before const qualifier
trivial: h8300: Storage class should be before const qualifier
trivial: fix where cgroup documentation is not correctly referred to
trivial: Give the right path in Documentation example
trivial: MTD: remove EOL from MODULE_DESCRIPTION
trivial: Fix typo in bio_split()'s documentation
trivial: PWM: fix of #endif comment
trivial: fix typos/grammar errors in Kconfig texts
trivial: Fix misspelling of firmware
trivial: cgroups: documentation typo and spelling corrections
trivial: Update contact info for Jochen Hein
trivial: fix typo "resgister" -> "register"
...
30 Mar, 2009
1 commit
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cgroup documentation was moved to Documentation/cgroups/. There are some
places that still refer to Documentation/controllers/,
Documentation/cgroups.txt and Documentation/cpusets.txt. Fix those.Signed-off-by: Thadeu Lima de Souza Cascardo
Reviewed-by: Li Zefan
Acked-by: Paul Menage
Signed-off-by: Jiri Kosina
06 Mar, 2009
1 commit
05 Mar, 2009
1 commit
-
[ mingo: small edits and extensions. ]
Signed-off-by: Yinghai Lu
Cc: "Eric W. Biederman"
Cc: Greg KH
Cc: Randy Dunlap
Cc: Alan Stern
Cc: Sarah Sharp
Cc: Andrew Morton
LKML-Reference:
Signed-off-by: Ingo Molnar
04 Mar, 2009
1 commit
-
…setup-lzma', 'x86/signal' and 'x86/urgent' into x86/core
15 Jan, 2009
2 commits
-
Modify field names to the right ones:
- start_sys was changed to start_sys_seg
- iinitrd_addr_max was changed to ramdisk_max
- pad2 was changed to pad2 and pad3
- readmode_swtch was changed to realmode_swtchSigned-off-by: Baodong Chen
Acked-by: Jiri Kosina
Signed-off-by: Ingo Molnar -
Impact: documentation
Update the boot protocol specification to include the currently
supported file formats and their magic numbers.Signed-off-by: H. Peter Anvin
10 Jan, 2009
1 commit
-
…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: (36 commits)
x86: fix section mismatch warnings in mcheck/mce_amd_64.c
x86: offer frame pointers in all build modes
x86: remove duplicated #include's
x86: k8 numa register active regions later
x86: update Alan Cox's email addresses
x86: rename all fields of mpc_table mpc_X to X
x86: rename all fields of mpc_oemtable oem_X to X
x86: rename all fields of mpc_bus mpc_X to X
x86: rename all fields of mpc_cpu mpc_X to X
x86: rename all fields of mpc_intsrc mpc_X to X
x86: rename all fields of mpc_lintsrc mpc_X to X
x86: rename all fields of mpc_iopic mpc_X to X
x86: irqinit_64.c init_ISA_irqs should be static
Documentation/x86/boot.txt: payload length was changed to payload_length
x86: setup_percpu.c fix style problems
x86: irqinit_64.c fix style problems
x86: irqinit_32.c fix style problems
x86: i8259.c fix style problems
x86: irq_32.c fix style problems
x86: ioport.c fix style problems
...
07 Jan, 2009
1 commit
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Update several Documentation/ files and a few sub-dir files (only one
change in each) to reflect changed header files locations.Signed-off-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
05 Jan, 2009
1 commit
-
Signed-off-by: Baodong Chen
Acked-by: Jiri Kosina
Signed-off-by: Ingo Molnar
23 Dec, 2008
1 commit
-
…86/debug', 'x86/defconfig', 'x86/detect-hyper', 'x86/doc', 'x86/dumpstack', 'x86/early-printk', 'x86/fpu', 'x86/idle', 'x86/io', 'x86/memory-corruption-check', 'x86/microcode', 'x86/mm', 'x86/mtrr', 'x86/nmi-watchdog', 'x86/pat2', 'x86/pci-ioapic-boot-irq-quirks', 'x86/ptrace', 'x86/quirks', 'x86/reboot', 'x86/setup-memory', 'x86/signal', 'x86/sparse-fixes', 'x86/time', 'x86/uv' and 'x86/xen' into x86/core