| Commit message (Collapse) | Author | Age | Files | Lines |
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Use vendor prefixes for Kconfig symbols and filenames. This should make
it easier to identify the various bridge drivers and to organize the
directory.
v2: fix object name for dw-hdmi (Fabio Estevam)
Signed-off-by: Thierry Reding <treding@nvidia.com>
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The likelihood of getting a large number of panel drivers from different
vendors is quite high. Add a prefix to the two existing Samsung panel
drivers to set a guideline for future patch submissions. Using vendor
prefixes consistently should allow a cleaner organization of the tree.
Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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git://git.infradead.org/users/dvhart/linux-platform-drivers-x86
Pull late x86 platform driver updates from Darren Hart:
"The following came in a bit later and I wanted them to bake in next a
few more days before submitting, thus the second pull.
A new intel_pmc_ipc driver, a symmetrical allocation and free fix in
dell-laptop, a couple minor fixes, and some updated documentation in
the dell-laptop comments.
intel_pmc_ipc:
- Add Intel Apollo Lake PMC IPC driver
tc1100-wmi:
- Delete an unnecessary check before the function call "kfree"
dell-laptop:
- Fix allocating & freeing SMI buffer page
- Show info about WiGig and UWB in debugfs
- Update information about wireless control"
* tag 'platform-drivers-x86-v4.2-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
intel_pmc_ipc: Add Intel Apollo Lake PMC IPC driver
tc1100-wmi: Delete an unnecessary check before the function call "kfree"
dell-laptop: Fix allocating & freeing SMI buffer page
dell-laptop: Show info about WiGig and UWB in debugfs
dell-laptop: Update information about wireless control
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This driver provides support for PMC control on Apollo Lake platforms.
The PMC is an ARC processor which defines some IPC commands for
communication with other entities in the CPU.
Signed-off-by: qipeng.zha <qipeng.zha@intel.com>
[fengguang.wu@intel.com: Fix Sparse and Cocinelle warnings]
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull more vfs updates from Al Viro:
"Assorted VFS fixes and related cleanups (IMO the most interesting in
that part are f_path-related things and Eric's descriptor-related
stuff). UFS regression fixes (it got broken last cycle). 9P fixes.
fs-cache series, DAX patches, Jan's file_remove_suid() work"
[ I'd say this is much more than "fixes and related cleanups". The
file_table locking rule change by Eric Dumazet is a rather big and
fundamental update even if the patch isn't huge. - Linus ]
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (49 commits)
9p: cope with bogus responses from server in p9_client_{read,write}
p9_client_write(): avoid double p9_free_req()
9p: forgetting to cancel request on interrupted zero-copy RPC
dax: bdev_direct_access() may sleep
block: Add support for DAX reads/writes to block devices
dax: Use copy_from_iter_nocache
dax: Add block size note to documentation
fs/file.c: __fget() and dup2() atomicity rules
fs/file.c: don't acquire files->file_lock in fd_install()
fs:super:get_anon_bdev: fix race condition could cause dev exceed its upper limitation
vfs: avoid creation of inode number 0 in get_next_ino
namei: make set_root_rcu() return void
make simple_positive() public
ufs: use dir_pages instead of ufs_dir_pages()
pagemap.h: move dir_pages() over there
remove the pointless include of lglock.h
fs: cleanup slight list_entry abuse
xfs: Correctly lock inode when removing suid and file capabilities
fs: Call security_ops->inode_killpriv on truncate
fs: Provide function telling whether file_remove_privs() will do anything
...
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Turn
d_path(&file->f_path, ...);
into
file_path(file, ...);
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Pull kvm fixes from Paolo Bonzini:
"Except for the preempt notifiers fix, these are all small bugfixes
that could have been waited for -rc2. Sending them now since I was
taking care of Peter's patch anyway"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
kvm: add hyper-v crash msrs values
KVM: x86: remove data variable from kvm_get_msr_common
KVM: s390: virtio-ccw: don't overwrite config space values
KVM: x86: keep track of LVT0 changes under APICv
KVM: x86: properly restore LVT0
KVM: x86: make vapics_in_nmi_mode atomic
sched, preempt_notifier: separate notifier registration from static_key inc/dec
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Added Hyper-V crash msrs values - HV_X64_MSR_CRASH*.
Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Peter Hornyack <peterhornyack@google.com>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Gleb Natapov <gleb@kernel.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Commit 609e36d372ad ("KVM: x86: pass host_initiated to functions that
read MSRs") modified kvm_get_msr_common function to use msr_info->data
instead of data but missed one occurrence. Replace it and remove the
unused local variable.
Fixes: 609e36d372ad ("KVM: x86: pass host_initiated to functions that
read MSRs")
Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Memory-mapped LVT0 register already contains the new value when APICv
traps so we can't directly detect a change.
Memorize a bit we are interested in to enable legacy NMI watchdog.
Suggested-by: Yoshida Nobuo <yoshida.nb@ncos.nec.co.jp>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Legacy NMI watchdog didn't work after migration/resume, because
vapics_in_nmi_mode was left at 0.
Cc: stable@vger.kernel.org
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Writes were a bit racy, but hard to turn into a bug at the same time.
(Particularly because modern Linux doesn't use this feature anymore.)
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
[Actually the next patch makes it much, much easier to trigger the race
so I'm including this one for stable@ as well. - Paolo]
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Two FPU rewrite related fixes. This addresses all known x86
regressions at this stage. Also some other misc fixes"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/fpu: Fix boot crash in the early FPU code
x86/asm/entry/64: Update path names
x86/fpu: Fix FPU related boot regression when CPUID masking BIOS feature is enabled
x86/boot/setup: Clean up the e820_reserve_setup_data() code
x86/kaslr: Fix typo in the KASLR_FLAG documentation
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Jan Kara and Thomas Gleixner reported boot crashes in the FPU
code:
general protection fault: 0000 [#1] SMP
RIP: 0010:[<ffffffff81048a6c>] [<ffffffff81048a6c>] mxcsr_feature_mask_init+0x1c/0x40
2b:* 0f ae 85 00 fe ff ff fxsave -0x200(%rbp)
and bisected it down to the following FPU commit:
91a8c2a5b43f ("x86/fpu: Clean up and fix MXCSR handling")
The reason is that the on-stack FPU registers state variable,
used by the FXSAVE instruction, did not have the required
minimum alignment of 16 bytes, causing the general protection
fault.
This is most likely a GCC bug in older GCC versions, but the
offending commit also added a bogus extra 32-byte alignment
(which GCC ignored too).
So fix this bug by making the variable static again, but also
mark it __initdata this time, because fpu__init_system_mxcsr()
is now an __init function.
Reported-and-bisected-by: Jan Kara <jack@suse.cz>
Reported-bisected-and-tested-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20150704075819.GA9201@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge branch that got ready.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Deobfuscate the 'found' logic, it can be replaced with a simple:
if (!pa_data)
return;
and 'found' can be eliminated.
Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yinghai Lu <yinghai@kernel.org>
Link: http://lkml.kernel.org/r/1433398729-8314-1-git-send-email-weiyang@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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enabled
Mike Galbraith reported:
" My i7-4790 box is having one hell of a time with this merge
window, dead in the water.
BIOS setting "Limit CPUID Maximum" upsets new fpu code
mightily. "
It turns out that Linux does a double workaround here, as per:
066941bd4eeb ("x86: unmask CPUID levels on Intel CPUs")
it undoes the BIOS workaround - but as a side effect the CPUID
state is not completely constant during early init anymore,
and the new FPU init code did not take this into account.
So what happened is that the xstate init code did not have full
CPUID available, which broke subsequent attempts to use xstate
features.
Fix this by ordering the early FPU init code to after we've
stabilized the CPUID state.
Reported-bisected-and-tested-by: Mike Galbraith <umgwanakikbuti@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <umgwanakikbuti@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20150627082514.GA10894@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar:
"This tree includes an x86 PMU scheduling fix, but most changes are
late breaking tooling fixes and updates:
User visible fixes:
- Create config.detected into OUTPUT directory, fixing parallel
builds sharing the same source directory (Aaro Kiskinen)
- Allow to specify custom linker command, fixing some MIPS64 builds.
(Aaro Kiskinen)
- Fix to show proper convergence stats in 'perf bench numa' (Srikar
Dronamraju)
User visible changes:
- Validate syscall list passed via -e argument to 'perf trace'.
(Arnaldo Carvalho de Melo)
- Introduce 'perf stat --per-thread' (Jiri Olsa)
- Check access permission for --kallsyms and --vmlinux (Li Zhang)
- Move toggling event logic from 'perf top' and into hists browser,
allowing freeze/unfreeze with event lists with more than one entry
(Namhyung Kim)
- Add missing newlines when dumping PERF_RECORD_FINISHED_ROUND and
showing the Aggregated stats in 'perf report -D' (Adrian Hunter)
Infrastructure fixes:
- Add missing break for PERF_RECORD_ITRACE_START, which caused those
events samples to be parsed as well as PERF_RECORD_LOST_SAMPLES.
ITRACE_START only appears when Intel PT or BTS are present, so..
(Jiri Olsa)
- Call the perf_session destructor when bailing out in the inject,
kmem, report, kvm and mem tools (Taeung Song)
Infrastructure changes:
- Move stuff out of 'perf stat' and into the lib for further use
(Jiri Olsa)
- Reference count the cpu_map and thread_map classes (Jiri Olsa)
- Set evsel->{cpus,threads} from the evlist, if not set, allowing the
generalization of some 'perf stat' functions that previously were
accessing private static evlist variable (Jiri Olsa)
- Delete an unnecessary check before the calling free_event_desc()
(Markus Elfring)
- Allow auxtrace data alignment (Adrian Hunter)
- Allow events with dot (Andi Kleen)
- Fix failure to 'perf probe' events on arm (He Kuang)
- Add testing for Makefile.perf (Jiri Olsa)
- Add test for make install with prefix (Jiri Olsa)
- Fix single target build dependency check (Jiri Olsa)
- Access thread_map entries via accessors, prep patch to hold more
info per entry, for ongoing 'perf stat --per-thread' work (Jiri
Olsa)
- Use __weak definition from compiler.h (Sukadev Bhattiprolu)
- Split perf_pmu__new_alias() (Sukadev Bhattiprolu)"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits)
perf tools: Allow to specify custom linker command
perf tools: Create config.detected into OUTPUT directory
perf mem: Fill in the missing session freeing after an error occurs
perf kvm: Fill in the missing session freeing after an error occurs
perf report: Fill in the missing session freeing after an error occurs
perf kmem: Fill in the missing session freeing after an error occurs
perf inject: Fill in the missing session freeing after an error occurs
perf tools: Add missing break for PERF_RECORD_ITRACE_START
perf/x86: Fix 'active_events' imbalance
perf symbols: Check access permission when reading symbol files
perf stat: Introduce --per-thread option
perf stat: Introduce print_counters function
perf stat: Using init_stats instead of memset
perf stat: Rename print_interval to process_interval
perf stat: Remove perf_evsel__read_cb function
perf stat: Move perf_stat initialization counter process code
perf stat: Move zero_per_pkg into counter process code
perf stat: Separate counters reading and processing
perf stat: Introduce read_counters function
perf stat: Introduce perf_evsel__read function
...
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Commit 1b7b938f1817 ("perf/x86/intel: Fix PMI handling for Intel PT") conditionally
increments active_events in x86_add_exclusive() but unconditionally decrements in
x86_del_exclusive().
These extra decrements can lead to the situation where
active_events is zero and thus the PMI handler is 'disabled'
while we have active events on the PMU generating PMIs.
This leads to a truckload of:
Uhhuh. NMI received for unknown reason 21 on CPU 28.
Do you have a strange power saving mode enabled?
Dazed and confused, but trying to continue
messages and generally messes up perf.
Remove the condition on the increment, double increment balanced
by a double decrement is perfectly fine.
Restructure the code a little bit to make the unconditional inc
a bit more natural.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: alexander.shishkin@linux.intel.com
Cc: brgerst@gmail.com
Cc: dvlasenk@redhat.com
Cc: luto@amacapital.net
Cc: oleg@redhat.com
Fixes: 1b7b938f1817 ("perf/x86/intel: Fix PMI handling for Intel PT")
Link: http://lkml.kernel.org/r/20150624144750.GJ18673@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull user namespace updates from Eric Biederman:
"Long ago and far away when user namespaces where young it was realized
that allowing fresh mounts of proc and sysfs with only user namespace
permissions could violate the basic rule that only root gets to decide
if proc or sysfs should be mounted at all.
Some hacks were put in place to reduce the worst of the damage could
be done, and the common sense rule was adopted that fresh mounts of
proc and sysfs should allow no more than bind mounts of proc and
sysfs. Unfortunately that rule has not been fully enforced.
There are two kinds of gaps in that enforcement. Only filesystems
mounted on empty directories of proc and sysfs should be ignored but
the test for empty directories was insufficient. So in my tree
directories on proc, sysctl and sysfs that will always be empty are
created specially. Every other technique is imperfect as an ordinary
directory can have entries added even after a readdir returns and
shows that the directory is empty. Special creation of directories
for mount points makes the code in the kernel a smidge clearer about
it's purpose. I asked container developers from the various container
projects to help test this and no holes were found in the set of mount
points on proc and sysfs that are created specially.
This set of changes also starts enforcing the mount flags of fresh
mounts of proc and sysfs are consistent with the existing mount of
proc and sysfs. I expected this to be the boring part of the work but
unfortunately unprivileged userspace winds up mounting fresh copies of
proc and sysfs with noexec and nosuid clear when root set those flags
on the previous mount of proc and sysfs. So for now only the atime,
read-only and nodev attributes which userspace happens to keep
consistent are enforced. Dealing with the noexec and nosuid
attributes remains for another time.
This set of changes also addresses an issue with how open file
descriptors from /proc/<pid>/ns/* are displayed. Recently readlink of
/proc/<pid>/fd has been triggering a WARN_ON that has not been
meaningful since it was added (as all of the code in the kernel was
converted) and is not now actively wrong.
There is also a short list of issues that have not been fixed yet that
I will mention briefly.
It is possible to rename a directory from below to above a bind mount.
At which point any directory pointers below the renamed directory can
be walked up to the root directory of the filesystem. With user
namespaces enabled a bind mount of the bind mount can be created
allowing the user to pick a directory whose children they can rename
to outside of the bind mount. This is challenging to fix and doubly
so because all obvious solutions must touch code that is in the
performance part of pathname resolution.
As mentioned above there is also a question of how to ensure that
developers by accident or with purpose do not introduce exectuable
files on sysfs and proc and in doing so introduce security regressions
in the current userspace that will not be immediately obvious and as
such are likely to require breaking userspace in painful ways once
they are recognized"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
vfs: Remove incorrect debugging WARN in prepend_path
mnt: Update fs_fully_visible to test for permanently empty directories
sysfs: Create mountpoints with sysfs_create_mount_point
sysfs: Add support for permanently empty directories to serve as mount points.
kernfs: Add support for always empty directories.
proc: Allow creating permanently empty directories that serve as mount points
sysctl: Allow creating permanently empty directories that serve as mountpoints.
fs: Add helper functions for permanently empty directories.
vfs: Ignore unlocked mounts in fs_fully_visible
mnt: Modify fs_fully_visible to deal with locked ro nodev and atime
mnt: Refactor the logic for mounting sysfs and proc in a user namespace
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This allows for better documentation in the code and
it allows for a simpler and fully correct version of
fs_fully_visible to be written.
The mount points converted and their filesystems are:
/sys/hypervisor/s390/ s390_hypfs
/sys/kernel/config/ configfs
/sys/kernel/debug/ debugfs
/sys/firmware/efi/efivars/ efivarfs
/sys/fs/fuse/connections/ fusectl
/sys/fs/pstore/ pstore
/sys/kernel/tracing/ tracefs
/sys/fs/cgroup/ cgroup
/sys/kernel/security/ securityfs
/sys/fs/selinux/ selinuxfs
/sys/fs/smackfs/ smackfs
Cc: stable@vger.kernel.org
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/ohad/hwspinlock
Pull hwspinlock updates from Ohad Ben-Cohen:
- hwspinlock core DT support from Suman Anna
- OMAP hwspinlock DT support from Suman Anna
- QCOM hwspinlock DT support from Bjorn Andersson
- a new CSR atlas7 hwspinlock driver from Wei Chen
- CSR atlas7 hwspinlock DT binding document from Wei Chen
- a tiny QCOM hwspinlock driver fix from Bjorn Andersson
* tag 'hwspinlock-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/hwspinlock:
hwspinlock: qcom: Correct msb in regmap_field
DT: hwspinlock: add the CSR atlas7 hwspinlock bindings document
hwspinlock: add a CSR atlas7 driver
hwspinlock: qcom: Add support for Qualcomm HW Mutex block
DT: hwspinlock: Add binding documentation for Qualcomm hwmutex
hwspinlock/omap: add support for dt nodes
Documentation: dt: add the omap hwspinlock bindings document
hwspinlock/core: add device tree support
Documentation: dt: add common bindings for hwspinlock
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HwSpinlock IP is present only on OMAP4 and other newer SoCs,
which are all device-tree boot only. This patch adds the
base support for parsing the DT nodes, and removes the code
dealing with the traditional platform device instantiation.
Signed-off-by: Suman Anna <s-anna@ti.com>
[tony@atomide.com: ack for legacy file removal]
Acked-by: Tony Lindgren <tony@atomide.com>
[comment on the imperfect always-zero base_id]
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes (and cleanups) from Catalin Marinas:
"Various arm64 fixes:
- suspicious RCU usage warning
- BPF (out of bounds array read and endianness conversion)
- perf (of_node usage after of_node_put, cpu_pmu->plat_device
assignment)
- huge pmd/pud check for value 0
- rate-limiting should only take unhandled signals into account
Clean-up:
- incorrect use of pgprot_t type
- unused header include
- __init annotation to arm_cpuidle_init
- pr_debug instead of pr_error for disabled GICC entries in
ACPI/MADT"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Fix show_unhandled_signal_ratelimited usage
ARM64 / SMP: Switch pr_err() to pr_debug() for disabled GICC entry
arm64: cpuidle: add __init section marker to arm_cpuidle_init
arm64: Don't report clear pmds and puds as huge
arm64: perf: fix unassigned cpu_pmu->plat_device when probing PMU PPIs
arm64: perf: Don't use of_node after putting it
arm64: fix incorrect use of pgprot_t variable
arm64/hw_breakpoint.c: remove unnecessary header
arm64: bpf: fix endianness conversion bugs
arm64: bpf: fix out-of-bounds read in bpf2a64_offset()
ARM64: smp: Fix suspicious RCU usage with ipi tracepoints
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Commit 86dca36e6ba introduced ratelimited usage for
'unhandled_signal' messages.
The commit checks the ratelimit irrespective of whether
the signal is handled or not, which is wrong and leads
to false reports like the below in dmesg :
__do_user_fault: 127 callbacks suppressed
Do the ratelimit check only if the signal is unhandled.
Fixes: 86dca36e6ba0 ("arm64: use private ratelimit state along with show_unhandled_signals")
Cc: Vladimir Murzin <Vladimir.Murzin@arm.com>
Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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It is normal that firmware presents GICC entry or entries (processors)
with disabled flag in ACPI MADT, taking a system of 16 cpus for example,
ACPI firmware may present 8 ebabled first with another 8 cpus disabled
in MADT, the disabled cpus can be hot-added later.
Firmware may also present more cpus than the hardware actually has, but
disabled the unused ones, and easily enable it when the hardware has such
cpus to make the firmware code scalable.
So that's not an error for disabled cpus in MADT, we can switch pr_err()
to pr_debug() to make the boot a little quieter by default.
Since hwid for disabled cpus often are invalid, and we check invalid hwid
first in the code, for use case that hot add cpus later will be filtered
out and will not be counted in possible cups, so move this check before
the hwid one to prepare the code to count for disabeld cpus when cpu
hot-plug is introduced.
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Reviewed-by: Al Stone <ahs3@redhat.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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It is not needed after booting, this patch moves the arm_cpuidle_init()
function to the __init section.
Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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The current pmd_huge() and pud_huge() functions simply check if the table
bit is not set and reports the entries as huge in that case. This is
counter-intuitive as a clear pmd/pud cannot also be a huge pmd/pud, and
it is inconsistent with at least arm and x86.
To prevent others from making the same mistake as me in looking at code
that calls these functions and to fix an issue with KVM on arm64 that
causes memory corruption due to incorrect page reference counting
resulting from this mistake, let's change the behavior.
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Reviewed-by: Steve Capper <steve.capper@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Fixes: 084bd29810a5 ("ARM64: mm: HugeTLB support.")
Cc: <stable@vger.kernel.org> # 3.11+
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Commit d795ef9aa831 ("arm64: perf: don't warn about missing
interrupt-affinity property for PPIs") added a check for PPIs so that
we avoid parsing the interrupt-affinity property for these naturally
affine interrupts.
Unfortunately, this check can trigger an early (successful) return and
we will not assign the value of cpu_pmu->plat_device. This patch fixes
the issue.
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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It's possible, albeit unlikely, that using the of_node here will
reference freed memory. Call of_node_put() after printing the
name to be safe.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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This fixes a build failure under STRICT_MM_TYPECHECKS, by adding
a missing pgprot_val() around a pgport_t reference.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Header <asm/kdebug.h> is not needed for arm64/hw_breakpoint.c,
Removing the same.
Signed-off-by: Maninder Singh <maninder1.s@samsung.com>
Reviewed-by: Vaneet Narang <v.narang@samsung.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Upper bits should be zeroed in endianness conversion:
- even when there's no need to change endianness (i.e., BPF_FROM_BE
on big endian or BPF_FROM_LE on little endian);
- after rev16.
This patch fixes such bugs by emitting extra instructions to clear
upper bits.
Cc: Zi Shen Lim <zlim.lnx@gmail.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Fixes: e54bcde3d69d ("arm64: eBPF JIT compiler")
Cc: <stable@vger.kernel.org> # 3.18+
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Problems occur when bpf_to or bpf_from has value prog->len - 1 (e.g.,
"Very long jump backwards" in test_bpf where the last instruction is a
jump): since ctx->offset has length prog->len, ctx->offset[bpf_to + 1]
or ctx->offset[bpf_from + 1] will cause an out-of-bounds read, leading
to a bogus jump offset and kernel panic.
This patch moves updating ctx->offset to after calling build_insn(),
and changes indexing to use bpf_to and bpf_from without + 1.
Fixes: e54bcde3d69d ("arm64: eBPF JIT compiler")
Cc: <stable@vger.kernel.org> # 3.18+
Cc: Zi Shen Lim <zlim.lnx@gmail.com>
Cc: Will Deacon <will.deacon@arm.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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John Stultz reported an RCU splat on ARM with ipi trace events
enabled. It looks like the same problem exists on ARM64.
At this point in the IPI handling path we haven't called
irq_enter() yet, so RCU doesn't know that we're about to exit
idle and properly warns that we're using RCU from an idle CPU.
Use trace_ipi_entry_rcuidle() instead of trace_ipi_entry() so
that RCU is informed about our exit from idle.
Cc: John Stultz <john.stultz@linaro.org>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: <stable@vger.kernel.org> # 3.17+
Fixes: 45ed695ac10a ("ARM64: add IPI tracepoints")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Pull nios2 update from Ley Foon Tan:
"Check number of timer instances"
* tag 'nios2-v4.2' of git://git.rocketboards.org/linux-socfpga-next:
nios2: check number of timer instances
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Display error message if number of timers is less than 2.
Signed-off-by: Ley Foon Tan <lftan@altera.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux
Pull ia64 boot noise reduction fix from Tony Luck:
"Remove some boot noise from a now-invalid check that pages are
reserved"
* tag 'please-pull-put_kernel_page' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
[IA64] Drop debug test/printk that some special pages are marked reserved
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In commit 92923ca3aace "mm: meminit: only set page reserved in the memblock region"
we dropped setting the reserved bits for all pages. This results in some warnings
on ia64:
put_kernel_page: page at 0xe000000005588000 not in reserved memory
put_kernel_page: page at 0xe000000005588000 not in reserved memory
put_kernel_page: page at 0xe000000005580000 not in reserved memory
put_kernel_page: page at 0xe000000005580000 not in reserved memory
put_kernel_page: page at 0xe000000005580000 not in reserved memory
put_kernel_page: page at 0xe000000005580000 not in reserved memory
the two different pages match up with two objects from the loaded kernel
that get mapped by arch/ia64/mm/init.c:setup_gate()
a000000101588000 D __start_gate_section
a000000101580000 D empty_zero_page
In a discussion with Mel Gorman:
http://lkml.kernel.org/r/20150526102219.GB13750%40suse.de
he suggested that while the preferred approach might be to
set the reserved bit for these pages, it would also be OK
to just drop the test:
"as it's a debugging check that is ia-64 specific"
After hunting around a bit and failin to find a good place to mark these
pages as reserved - I decided to just delete the test.
Signed-off-by: Tony Luck <tony.luck@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC late fixes and dependencies from Kevin Hilman:
"This is a collection of a few late fixes and other misc stuff that had
dependencies on things being merged from other trees.
Other than the fixes, the primary feature being added is the
conversion of some OMAP drivers to the new generic wakeirq interface"
* tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: multi_v7_defconfig: Enable BRCMNAND driver
ARM: BCM: Do not select CONFIG_MTD_NAND_BRCMNAND
ARM: at91/dt: update udc compatible strings
ARM: at91/dt: trivial: fix USB udc compatible string
arm64: dts: Add APM X-Gene standby GPIO controller DTS entries
soc: qcom: spm: Fix idle on THUMB2 kernels
ARM: dove: fix legacy dove IRQ numbers
ARM: mvebu: fix suspend to RAM on big-endian configurations
ARM: mvebu: adjust Armada XP DT spi muxing after pinctrl function rename
serial: 8250_omap: Move wake-up interrupt to generic wakeirq
serial: omap: Switch wake-up interrupt to generic wakeirq
mmc: omap_hsmmc: Change wake-up interrupt to use generic wakeirq
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The Broadcom NAND driver is used by brcmstb, bcm63xx, bcm5301x and
Cygnus/iProc under mach-bcm, this is enough critical mass to enable it.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
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This reverts 7dc95b40f599293aedf30432749ad25b51549041 ("ARM: BCM: Enable
NAND support for iProc SoCs") since it creates an unmet dependency for
MTD_NAND_BRCMNAND which depends on MTD and MTD_NAND, this results in the
following build failure for brcmnand:
LD init/built-in.o
drivers/built-in.o: In function `brcmnand_remove':
/home/fainelli/dev/linux/drivers/mtd/nand/brcmnand/brcmnand.c:2234:
undefined reference to `nand_release'
drivers/built-in.o: In function `brcmnand_init_cs':
/home/fainelli/dev/linux/drivers/mtd/nand/brcmnand/brcmnand.c:1933:
undefined reference to `nand_scan_ident'
/home/fainelli/dev/linux/drivers/mtd/nand/brcmnand/brcmnand.c:1958:
undefined reference to `nand_scan_tail'
Makefile:931: recipe for target 'vmlinux' failed
make: *** [vmlinux] Error 1
Instead, select this driver an all dependencies on the
multi_v7_defconfig.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
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next/late
Merge "ARM: mvebu: fixes for v4.2" from Gregory Clement:
mvebu fixes for 4.2 (part 0)
Fix legacy dove IRQ numbers
* tag 'mvebu-fixes-4.2-0' of git://git.infradead.org/linux-mvebu:
ARM: dove: fix legacy dove IRQ numbers
ARM: mvebu: fix suspend to RAM on big-endian configurations
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v3.18 changed handle_IRQ() to call __handle_domain_irq(), which now
rejects attempts to deliver IRQ0. Since IRQ 0 is used as the timer
interrupt (just like the PIT on x86), this causes boot to fail as the
bogomips calibration never completes.
Fix this by shuffling all interrupts up by one.
Fixes: a71b092a9c68 ("ARM: Convert handle_IRQ to use __handle_domain_irq")
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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The current Armada XP suspend to RAM implementation, as added in
commit 27432825ae19f ("ARM: mvebu: Armada XP GP specific
suspend/resume code") does not handle big-endian configurations
properly: the small bit of assembly code putting the DRAM in
self-refresh and toggling the GPIOs to turn off power forgets to
convert the values to little-endian.
This commit fixes that by making sure the two values we will write to
the DRAM controller register and GPIO register are already in
little-endian before entering the critical assembly code.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: <stable@vger.kernel.org> # v3.19+
Fixes: 27432825ae19f ("ARM: mvebu: Armada XP GP specific suspend/resume code")
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Merge "ARM: mvebu: dt changes for v4.2" from Gregory Clement
mvebu dt changes for v4.2 (part #3)
Update Armada XP DT spi muxing after pinctrl function rename which was
merged in the pinctrl subsystem for 4.2. Without it the spi muxing
will be broken in 4.2-rc1 for Armada XP.
* tag 'mvebu-dt-4.2-3' of git://git.infradead.org/linux-mvebu:
ARM: mvebu: adjust Armada XP DT spi muxing after pinctrl function rename
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Following the merge of "pinctrl: mvebu: armada-xp: rename spi to spi0"
by Linus Walleij, we need to adjust the Armada XP Device Tree
accordingly, by adjusting the pinctrl configuration for SPI pins.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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at91sam9g45, at91sam9x5 and sama5 SoCs should not use
"atmel,at91sam9rl-udc" for their USB device compatible property since
this compatible is attached to a specific hardware bug fix.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Tested-by: Bo Shen <voice.shen@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: <stable@vger.kernel.org> #4.0+
Signed-off-by: Kevin Hilman <khilman@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/late
Merge "omap generic wakeirq for v4.2 merge window" from Tony Lindgren:
Omap driver changes for v4.2 to switch drivers over to Linux generic
wake IRQ events for omap_hsmmc, 8250_omap and omap-serial
drivers.
The generic wake IRQs also fix issues that these drivers potentially
have with IRQ re-entrancy at least for serial-omap.
Note that because of dependencies and merge conflicts these are
based on Rafael's pm-wakeirq and Greg's tty-next branches.
* tag 'omap-for-v4.2/wakeirq-drivers-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (148 commits)
serial: 8250_omap: Move wake-up interrupt to generic wakeirq
serial: omap: Switch wake-up interrupt to generic wakeirq
tty: move linux/gsmmux.h to uapi
doc: dt: add documentation for nxp,lpc1850-uart
serial: 8250: add LPC18xx/43xx UART driver
serial: 8250_uniphier: add UniPhier serial driver
serial: 8250_dw: support ACPI platforms with integrated DMA engine
serial: of_serial: check the return value of clk_prepare_enable()
serial: of_serial: use devm_clk_get() instead of clk_get()
serial: earlycon: Add support for big-endian MMIO accesses
serial: sirf: use hrtimer for data rx
serial: sirf: correct the fifo empty_bit
serial: sirf: fix system hung on console log output
serial: 8250: remove return statements from void function
sc16is7xx: use kworker for RS-485 configuration
sc16is7xx: use kworker to update ier bits
sc16is7xx: use kworker for md_proc
sc16is7xx: move RTS delay to workqueue
sc16is7xx: use kthread_worker for tx_work and irq
sc16is7xx: use LSR_TEMT_BIT in .tx_empty()
...
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