With -cpu host, KVM reports LBR and extra_regs support, if the host has
support.
When the guest perf driver tries to access LBR or extra_regs MSR,
it #GPs all MSR accesses,since KVM doesn't handle LBR and extra_regs support.
So check the related MSRs access right once at initialization time to avoid
the error access at runtime.
For reproducing the issue, please build the kernel with CONFIG_KVM_INTEL = y
(for host kernel).
And CONFIG_PARAVIRT = n and CONFIG_KVM_GUEST = n (for guest kernel).
Start the guest with -cpu host.
Run perf record with --branch-any or --branch-filter in guest to trigger LBR
Run perf stat offcore events (E.g. LLC-loads/LLC-load-misses ...) in guest to
trigger offcore_rsp #GP
Signed-off-by: Kan Liang <kan.liang@intel.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Maria Dimakopoulou <maria.n.dimakopoulou@gmail.com>
Cc: Mark Davies <junk@eslaf.co.uk>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Yan, Zheng <zheng.z.yan@intel.com>
Link: http://lkml.kernel.org/r/1405365957-20202-1-git-send-email-kan.liang@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This patch fixes the SNB-EP and IVT Cbox filter mapping
table. The table controls which filters are supported by
which events. There were several mistakes in those tables
causing some filters to be ignored, such as NID on
TOR_INSERTS.
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: zheng.z.yan@intel.com
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/20140630144624.GA2604@quad
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This was discussed back in February:
https://lkml.org/lkml/2014/2/18/956
But I never saw a patch come out of it.
On IvyBridge we share the SandyBridge cache event tables, but the
dTLB-load-miss event is not compatible. Patch it up after
the fact to the proper DTLB_LOAD_MISSES.DEMAND_LD_MISS_CAUSES_A_WALK
Signed-off-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/alpine.DEB.2.11.1407141528200.17214@vincent-weaver-1.umelst.maine.edu
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Vince reported that commit 15a2d4de0e ("perf: Always destroy groups
on exit") causes a regression with grouped events. In particular his
read_group_attached.c test fails.
https://github.com/deater/perf_event_tests/blob/master/tests/bugs/read_group_attached.c
Because of the context switch optimization in
perf_event_context_sched_out() the 'original' event may end up in the
child process and when that exits the change in the patch in question
destroys the actual grouping.
Therefore revert that change and only destroy inherited groups.
Reported-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/n/tip-zedy3uktcp753q8fw8dagx7a@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
When we have at least one LE slave connection most (probably all)
controllers will refuse to initiate any new connections. To avoid
unnecessary failures simply check for this situation up-front and skip
the connection attempt.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Most (probably all) controllers can only deal with a single slave LE
connection at a time. This patch adds a counter for such connections so
that the number can be quickly looked up without iterating the
connections list.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
We need to be able to track slave vs master LE connections in
hci_conn_hash, and to be able to do that we need to know the role of the
connection by the time hci_conn_add_has() is called. This means in
practice the hci_conn_add() call that creates the hci_conn_object.
This patch adds a new role parameter to hci_conn_add() function to give
the object its initial role value, and updates the callers to pass the
appropriate role to it. Since the function now takes care of
initializing both conn->role and conn->out values we can remove some
other unnecessary assignments.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
To make the code more understandable it makes sense to use the new HCI
defines for connection role instead of a "bool master" parameter. This
makes it immediately clear when looking at the function calls what the
last parameter is describing.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Having a dedicated u8 role variable in the hci_conn struct greatly
simplifies tracking of the role, since this is the native way that it's
represented on the HCI level.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
All HCI commands and events, including LE ones, use 0x00 for master role
and 0x01 for slave role. It makes therefore sense to add generic defines
for these instead of the current LE_CONN_ROLE_MASTER. Having clean
defines will also make it possible to provide simpler internal APIs.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
The fixup of the inline assembly to restore the floating-point-control
register needs to check for instruction address *after* the lfcp
instruction as the specification and data exceptions are suppresssing.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Improve device probing process for zcrypt adapters to
transmit service request during registration process.
Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
The PSW mask check of the PTRACE_POKEUSR_AREA command is incorrect.
The PSW_MASK_USER define contains the PSW_MASK_ASC bits, the ptrace
interface accepts all combinations for the address-space-control
bits. To protect the kernel space the PSW mask check in ptrace needs
to reject the address-space-control bit combination for home space.
Fixes CVE-2014-3534
Cc: stable@vger.kernel.org
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
MSI irqchip in s390 has its own mask and unmask MSI irq
functions, zpci_enable_irq() and zpci_disable_irq().
They mask and unmask MSI irq in standard ways, no arch
special. MSI driver provides two global standard functions
mask_msi_irq() and unmask_msi_irq(). Local zpci_enable_irq()
and zpci_disable_irq() are almost the same as the standard
two. the difference is local mask/unmask functions
read the mask status before mask and unmask everytime.
Then change the value and rewrite to hardware. In standard
functions, save the mask status after mask and unmask msi
irq, and use the cached status to change the mask status.
When we mask or unmask a MSI irq, we always cache its
mask status except we know need not to cache it, like in
pci_msi_shutdown. So use the standard functions to replace
the local is safe.
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
[sebott: fixed inverted function pointers]
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
The size detection for 3270 terminals with the read-partition command is
broken. The raw3270_reset_device_cb function clears the init_data array,
but if raw3270_writesf_readpart has been called the read-partition command
is queued which needs the init_data array. In this case the size detection
will fail and the invalid command does funny things to the terminal.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Inlined uaccess functions require the mvcos facility (bit 27), not the tod
clock steering facility (bit 28) for z10 and newer machines.
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
While a queue is being destroyed, all the blkgs are destroyed and its
->root_blkg pointer is set to NULL. If someone else starts to drain
while the queue is in this state, the following oops happens.
NULL pointer dereference at 0000000000000028
IP: [<ffffffff8144e944>] blk_throtl_drain+0x84/0x230
PGD e4a1067 PUD b773067 PMD 0
Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
Modules linked in: cfq_iosched(-) [last unloaded: cfq_iosched]
CPU: 1 PID: 537 Comm: bash Not tainted 3.16.0-rc3-work+ #2
Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
task: ffff88000e222250 ti: ffff88000efd4000 task.ti: ffff88000efd4000
RIP: 0010:[<ffffffff8144e944>] [<ffffffff8144e944>] blk_throtl_drain+0x84/0x230
RSP: 0018:ffff88000efd7bf0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff880015091450 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88000efd7c10 R08: 0000000000000000 R09: 0000000000000001
R10: ffff88000e222250 R11: 0000000000000000 R12: ffff880015091450
R13: ffff880015092e00 R14: ffff880015091d70 R15: ffff88001508fc28
FS: 00007f1332650740(0000) GS:ffff88001fa80000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000028 CR3: 0000000009446000 CR4: 00000000000006e0
Stack:
ffffffff8144e8f6 ffff880015091450 0000000000000000 ffff880015091d80
ffff88000efd7c28 ffffffff8144ae2f ffff880015091450 ffff88000efd7c58
ffffffff81427641 ffff880015091450 ffffffff82401f00 ffff880015091450
Call Trace:
[<ffffffff8144ae2f>] blkcg_drain_queue+0x1f/0x60
[<ffffffff81427641>] __blk_drain_queue+0x71/0x180
[<ffffffff81429b3e>] blk_queue_bypass_start+0x6e/0xb0
[<ffffffff814498b8>] blkcg_deactivate_policy+0x38/0x120
[<ffffffff8144ec44>] blk_throtl_exit+0x34/0x50
[<ffffffff8144aea5>] blkcg_exit_queue+0x35/0x40
[<ffffffff8142d476>] blk_release_queue+0x26/0xd0
[<ffffffff81454968>] kobject_cleanup+0x38/0x70
[<ffffffff81454848>] kobject_put+0x28/0x60
[<ffffffff81427505>] blk_put_queue+0x15/0x20
[<ffffffff817d07bb>] scsi_device_dev_release_usercontext+0x16b/0x1c0
[<ffffffff810bc339>] execute_in_process_context+0x89/0xa0
[<ffffffff817d064c>] scsi_device_dev_release+0x1c/0x20
[<ffffffff817930e2>] device_release+0x32/0xa0
[<ffffffff81454968>] kobject_cleanup+0x38/0x70
[<ffffffff81454848>] kobject_put+0x28/0x60
[<ffffffff817934d7>] put_device+0x17/0x20
[<ffffffff817d11b9>] __scsi_remove_device+0xa9/0xe0
[<ffffffff817d121b>] scsi_remove_device+0x2b/0x40
[<ffffffff817d1257>] sdev_store_delete+0x27/0x30
[<ffffffff81792ca8>] dev_attr_store+0x18/0x30
[<ffffffff8126f75e>] sysfs_kf_write+0x3e/0x50
[<ffffffff8126ea87>] kernfs_fop_write+0xe7/0x170
[<ffffffff811f5e9f>] vfs_write+0xaf/0x1d0
[<ffffffff811f69bd>] SyS_write+0x4d/0xc0
[<ffffffff81d24692>] system_call_fastpath+0x16/0x1b
776687bce4 ("block, blk-mq: draining can't be skipped even if
bypass_depth was non-zero") made it easier to trigger this bug by
making blk_queue_bypass_start() drain even when it loses the first
bypass test to blk_cleanup_queue(); however, the bug has always been
there even before the commit as blk_queue_bypass_start() could race
against queue destruction, win the initial bypass test but perform the
actual draining after blk_cleanup_queue() already destroyed all blkgs.
Fix it by skippping calling into policy draining if all the blkgs are
already gone.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Shirish Pargaonkar <spargaonkar@suse.com>
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Reported-by: Jet Chen <jet.chen@intel.com>
Cc: stable@vger.kernel.org
Tested-by: Shirish Pargaonkar <spargaonkar@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Veaceslav Falico says:
====================
bonding: convert pr_* to netdev_*
Currently bonding uses pr_info/warn/etc. function to print something, while
it's encouraged to use netdev_info/warn/etc. in net/.
This patchset converts them where possible (i.e. where we have a working
net_device). Also, convert pr_ratelimit* to net_() and remove the pr_fmt,
to unify netdev_* and pr_* outputs.
====================
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
To maintain the same message structure as netdev_* functions print.
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
To maintain the same message structure as netdev_* functions print.
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
One occurance left intact as it's unrelated to net_device.
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
To maintain the same message structure as netdev_* functions print.
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
To maintain the same message structure as netdev_* functions print.
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Several functions left out cause we might not have at that time a valid
bond/slave/port.
Also, converted severa pr_ratelimited into net_ratelimited.
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
To maintain the same message structure as netdev_* functions print.
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Converted only the parts where we've had a valid net_device, skipping the
init/deinit and options verification.
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
instead of return error on zero rx_coalesce_usecs, disable coalesce
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
During the conversion to "static" functions this one got left out, only its
prototype was converted, thus resulting in:
drivers/net/bonding//bond_options.c:674:5: warning: symbol
'bond_option_mode_set' was not declared. Should it be static?
Fix it by making it static and also break the line in two as it was too
long.
CC: Stephen Hemminger <stephen@networkplumber.org>
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Veaceslav Falico <vfalico@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
CC: David S. Miller <davem@davemloft.net>
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently we exit if the slave isn't the first slave, doesn't support mac
address setting and fail_over_mac isn't FOM_ACTIVE. It's wrong because we
only require ndo_set_mac_address in case bonding is in active-backup mode
and FOM isn't FOM_ACTIVE.
To fix this - only exit with an error if we're in a/b mode and have
fail_over_mac != FOM_ACTIVE.
Also, maintain current behaviour on the first slave (forcibly change fom to
FOM_ACTIVE) to not break anyone's configuration.
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Added a counter rx_noskb_drop for failure to allocate an skb.
Summed the per-channel rx_nodesc_trunc counters earlier so that they can
be included in rx_dropped.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If using a demand-dialled PPP unit for a PPP multilink master, the pppd
daemon needs to reset the sequence counter between two connections. This
allows the daemon to reuse the PPP unit instead of destroying and recreating
it. As there is no API to reset the counter, this patch resets the counter
whenever the SC_MULTILINK flag is set.
Signed-off-by: Christoph Schulz <develop@kristov.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
The return value from 'ubi_io_read_ec_hdr()' was stored in 'err', not in 'ret'.
This fix makes sure Fastmap-enabled UBI does not miss bit-flip while reading EC
headers, events and scrubs the affected PEBs.
This issue was reported by Coverity Scan.
Artem: improved the commit message.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
- resolve FIXMEs in double exception handler for window overflow. This
fix makes native building of linux on xtensa host possible;
- fix sysmem region removal issue introduced in 3.15.
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Merge tag 'xtensa-for-next-20140715' of git://github.com/jcmvbkbc/linux-xtensa into for_next
Xtensa fixes for 3.16:
- resolve FIXMEs in double exception handler for window overflow. This
fix makes native building of linux on xtensa host possible;
- fix sysmem region removal issue introduced in 3.15.
Only fixing errors reported by checkpatch.pl, based on the following
rules:
1. '*' should be adjacent to the data name or function name.
2. Don't use C99-style "// ..." comments.
Signed-off-by: KANG Yuxuan <stonekyx@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch cleanup the follwoing coding style issues:
- indentation style
- new line after declaration
Tested by compilation only.
Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch cleanup the follwoing coding style issues:
- line over 80 chars
- spaces on the beginning of a line
- put { and } on the correct places
Tested by compilation only.
Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use tabs instead of spaces in a set of statements and fix lines
over 80 chars. Reported by checkpatch.
Tested by compilation only.
Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove the code that generates proc entries for the controlVM channel.
These entries are no longer necessary for debug.
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
It was added to support DSP Bridge. Since DSP Bridge was removed, and
nothing else is using the platform device, remove it too.
Signed-off-by: Kristina Martšenko <kristina.martsenko@gmail.com>
Cc: Omar Ramirez Luna <omar.ramirez@copitl.com>
Cc: Suman Anna <s-anna@ti.com>
Cc: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The driver has been broken and disabled for several kernel versions now.
It doesn't have a maintainer anymore, and most of the people who've
worked on it have moved on. There's also still a long list of issues in
the TODO file before it can be moved out of staging. Until someone can
put in the work to make the driver work again and move it out of
staging, remove it from the kernel.
Signed-off-by: Kristina Martšenko <kristina.martsenko@gmail.com>
Cc: Omar Ramirez Luna <omar.ramirez@copitl.com>
Cc: Suman Anna <s-anna@ti.com>
Cc: Felipe Contreras <felipe.contreras@gmail.com>
Cc: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
