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Add APC CPR configuration for sdm660 speed-bin 4
parts.
Change-Id: Iaeb5611218fbad22083f030a374db31c5774153b
Signed-off-by: Tirupathi Reddy <tirupath@codeaurora.org>
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Add msm-pcm-dtmf DAI for sound cards on msm8996
automotive ADP/CDP platforms.
Change-Id: I5015536ec7293892bb1da4547b2ea90b20d93123
Signed-off-by: Timothy Sham <tsham@codeaurora.org>
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MISC, QCPE and FDE physical channels are added for msm8996
baseline vplatform for test and security use cases.
Change-Id: I1ba984bf65b9aab8cf56f024a24494498b701fca
Signed-off-by: Yong Ding <yongding@codeaurora.org>
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This reverts commit 976d5ca5ddeff6f4b2b364edb916d39fa6448365.
Change-Id: I4b6bb0e3af39bcdf0238ca542ab3acfc584a5fd3
Signed-off-by: Vivek Kumar <vivekuma@codeaurora.org>
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HAB(Hypervisor ABstraction driver) is used to support
message tx/rx or buffer sharing between multiple OS in the
virtualization environment.
With such hab device node in the ivi LA vplatform's device
tree, hab driver will get its configurations dynamically.
So it will not use the default configurations any more.
Change-Id: Ie036799428bccac3685229c249b4943335807b68
Signed-off-by: Yong Ding <yongding@codeaurora.org>
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Include QRD630 device tree file to leverage peripherals nodes and
delete smb1351 node as it is not present on QRD630 board.
Change-Id: I91b6356bf7267d56af73eee1a1bea3fa5ae944f4
Signed-off-by: Jiangen Jiao <jiangenj@codeaurora.org>
Signed-off-by: Zhenhua Huang <zhenhuah@codeaurora.org>
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* refs/heads/tmp-d5d6526
Linux 4.4.131
serial: mctrl_gpio: Add missing module license
serial: mctrl_gpio: export mctrl_gpio_disable_ms and mctrl_gpio_init
x86/smpboot: Don't use mwait_play_dead() on AMD systems
x86/ipc: Fix x32 version of shmid64_ds and msqid64_ds
libceph: validate con->state at the top of try_write()
ASoC: fsl_esai: Fix divisor calculation failure at lower ratio
ARM: amba: Don't read past the end of sysfs "driver_override" buffer
ARM: amba: Fix race condition with driver_override
ARM: amba: Make driver_override output consistent with other buses
scsi: sd: Defer spinning up drive while SANITIZE is in progress
kobject: don't use WARN for registration failures
mtd: cfi: cmdset_0002: Do not allow read/write to suspend erase block.
mtd: cfi: cmdset_0001: Workaround Micron Erase suspend bug.
mtd: cfi: cmdset_0001: Do not allow read/write to suspend erase block.
ALSA: hda/realtek - Add some fixes for ALC233
ALSA: hda: Hardening for potential Spectre v1
ALSA: seq: oss: Hardening for potential Spectre v1
ALSA: seq: oss: Fix unbalanced use lock for synth MIDI device
ALSA: core: Report audio_tstamp in snd_pcm_sync_ptr
ALSA: control: Hardening for potential Spectre v1
ALSA: rme9652: Hardening for potential Spectre v1
ALSA: hdspm: Hardening for potential Spectre v1
ALSA: asihpi: Hardening for potential Spectre v1
ALSA: opl3: Hardening for potential Spectre v1
tty: Use __GFP_NOFAIL for tty_ldisc_get()
tty: n_gsm: Fix DLCI handling for ADM mode if debug & 2 is not set
tty: n_gsm: Fix long delays with control frame timeouts in ADM mode
tty: Don't call panic() at tty_ldisc_init()
drm/virtio: fix vq wait_event condition
virtio_console: free buffers after reset
virtio: add ability to iterate over vqs
ALSA: usb-audio: Skip broken EU on Dell dock USB-audio
USB: Increment wakeup count on remote wakeup.
usb: core: Add quirk for HP v222w 16GB Mini
USB: serial: cp210x: add ID for NI USB serial console
USB: serial: ftdi_sio: use jtag quirk for Arrow USB Blaster
USB: serial: simple: add libtransistor console
usbip: vhci_hcd: Fix usb device and sockfd leaks
usbip: usbip_host: fix to hold parent lock for device_attach() calls
ext4: fix bitmap position validation
ext4: add validity checks for bitmap block numbers
ext4: set h_journal if there is a failure starting a reserved handle
ext4: prevent right-shifting extents beyond EXT_MAX_BLOCKS
goldfish: pipe: ANDROID: Allocate memory with GFP_KERNEL.
goldfish: pipe: ANDROID: Do not crash
goldfish: pipe: ANDROID: remove redundant casting
goldfish: pipe: ANDROID: Add 'pipe' to pipe functions
goldfish: pipe: ANDROID: fix whitespace
goldfish: pipe: ANDROID: rename global variables
goldfish: pipe: ANDROID: remove a redundant target
goldfish: pipe: ANDROID: add blank lines
goldfish: pipe: ANDROID: replace 'BUG_ON' with 'BUILD_BUG_ON'
goldfish: pipe: ANDROID: use the 'BIT' macro for wakeup flags
goldfish: pipe: ANDROID: fix logging format strings
Linux 4.4.130
s390/uprobes: implement arch_uretprobe_is_alive()
s390/cio: update chpid descriptor after resource accessibility event
cdrom: information leak in cdrom_ioctl_media_changed()
scsi: mptsas: Disable WRITE SAME
ipv6: add RTA_TABLE and RTA_PREFSRC to rtm_ipv6_policy
net: af_packet: fix race in PACKET_{R|T}X_RING
tcp: md5: reject TCP_MD5SIG or TCP_MD5SIG_EXT on established sockets
net: fix deadlock while clearing neighbor proxy table
tipc: add policy for TIPC_NLA_NET_ADDR
llc: fix NULL pointer deref for SOCK_ZAPPED
llc: hold llc_sap before release_sock()
sctp: do not check port in sctp_inet6_cmp_addr
vlan: Fix reading memory beyond skb->tail in skb_vlan_tagged_multi
pppoe: check sockaddr length in pppoe_connect()
packet: fix bitfield update race
team: fix netconsole setup over team
team: avoid adding twice the same option to the event list
tcp: don't read out-of-bounds opsize
llc: delete timers synchronously in llc_sk_free()
net: validate attribute sizes in neigh_dump_table()
l2tp: check sockaddr length in pppol2tp_connect()
KEYS: DNS: limit the length of option strings
bonding: do not set slave_dev npinfo before slave_enable_netpoll in bond_enslave
s390: correct module section names for expoline code revert
s390: correct nospec auto detection init order
s390: add sysfs attributes for spectre
s390: report spectre mitigation via syslog
s390: add automatic detection of the spectre defense
s390: move nobp parameter functions to nospec-branch.c
s390/entry.S: fix spurious zeroing of r0
s390: do not bypass BPENTER for interrupt system calls
s390: Replace IS_ENABLED(EXPOLINE_*) with IS_ENABLED(CONFIG_EXPOLINE_*)
s390: introduce execute-trampolines for branches
s390: run user space and KVM guests with modified branch prediction
s390: add options to change branch prediction behaviour for the kernel
s390/alternative: use a copy of the facility bit mask
s390: add optimized array_index_mask_nospec
s390: scrub registers on kernel entry and KVM exit
KVM: s390: wire up bpb feature
s390: enable CPU alternatives unconditionally
s390: introduce CPU alternatives
Revert "ath10k: send (re)assoc peer command when NSS changed"
jbd2: fix use after free in kjournald2()
ath9k_hw: check if the chip failed to wake up
Input: drv260x - fix initializing overdrive voltage
r8152: add Linksys USB3GIGV1 id
staging: ion : Donnot wakeup kswapd in ion system alloc
perf: Return proper values for user stack errors
x86/tsc: Prevent 32bit truncation in calc_hpet_ref()
cifs: do not allow creating sockets except with SMB1 posix exensions
UPSTREAM: tracing: always define trace_{irq,preempt}_{enable_disable}
ANDROID: staging: ion: Obey kptr_restrict
ANDROID: sdcardfs: Set s_root to NULL after putting
ANDROID: sdcardfs: d_make_root calls iput
ANDROID: sdcardfs: Check for private data earlier
Conflicts:
drivers/staging/android/ion/ion.c
drivers/staging/android/ion/ion_cma_heap.c
drivers/staging/android/ion/ion_system_heap.c
Change-Id: I8155103b3787bb800f85291cc7378a8e29a8436f
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.131
ext4: prevent right-shifting extents beyond EXT_MAX_BLOCKS
ext4: set h_journal if there is a failure starting a reserved handle
ext4: add validity checks for bitmap block numbers
ext4: fix bitmap position validation
usbip: usbip_host: fix to hold parent lock for device_attach() calls
usbip: vhci_hcd: Fix usb device and sockfd leaks
USB: serial: simple: add libtransistor console
USB: serial: ftdi_sio: use jtag quirk for Arrow USB Blaster
USB: serial: cp210x: add ID for NI USB serial console
usb: core: Add quirk for HP v222w 16GB Mini
USB: Increment wakeup count on remote wakeup.
ALSA: usb-audio: Skip broken EU on Dell dock USB-audio
virtio: add ability to iterate over vqs
virtio_console: free buffers after reset
drm/virtio: fix vq wait_event condition
tty: Don't call panic() at tty_ldisc_init()
tty: n_gsm: Fix long delays with control frame timeouts in ADM mode
tty: n_gsm: Fix DLCI handling for ADM mode if debug & 2 is not set
tty: Use __GFP_NOFAIL for tty_ldisc_get()
ALSA: opl3: Hardening for potential Spectre v1
ALSA: asihpi: Hardening for potential Spectre v1
ALSA: hdspm: Hardening for potential Spectre v1
ALSA: rme9652: Hardening for potential Spectre v1
ALSA: control: Hardening for potential Spectre v1
ALSA: core: Report audio_tstamp in snd_pcm_sync_ptr
ALSA: seq: oss: Fix unbalanced use lock for synth MIDI device
ALSA: seq: oss: Hardening for potential Spectre v1
ALSA: hda: Hardening for potential Spectre v1
ALSA: hda/realtek - Add some fixes for ALC233
mtd: cfi: cmdset_0001: Do not allow read/write to suspend erase block.
mtd: cfi: cmdset_0001: Workaround Micron Erase suspend bug.
mtd: cfi: cmdset_0002: Do not allow read/write to suspend erase block.
kobject: don't use WARN for registration failures
scsi: sd: Defer spinning up drive while SANITIZE is in progress
ARM: amba: Make driver_override output consistent with other buses
ARM: amba: Fix race condition with driver_override
ARM: amba: Don't read past the end of sysfs "driver_override" buffer
ASoC: fsl_esai: Fix divisor calculation failure at lower ratio
libceph: validate con->state at the top of try_write()
x86/ipc: Fix x32 version of shmid64_ds and msqid64_ds
x86/smpboot: Don't use mwait_play_dead() on AMD systems
serial: mctrl_gpio: export mctrl_gpio_disable_ms and mctrl_gpio_init
serial: mctrl_gpio: Add missing module license
Linux 4.4.131
Change-Id: I8be9780b3f588b6ca9499b2f31ee4be0dbc9ef77
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit da6fa7ef67f07108a1b0cb9fd9e7fcaabd39c051 upstream.
Recent AMD systems support using MWAIT for C1 state. However, MWAIT will
not allow deeper cstates than C1 on current systems.
play_dead() expects to use the deepest state available. The deepest state
available on AMD systems is reached through SystemIO or HALT. If MWAIT is
available, it is preferred over the other methods, so the CPU never reaches
the deepest possible state.
Don't try to use MWAIT to play_dead() on AMD systems. Instead, use CPUIDLE
to enter the deepest state advertised by firmware. If CPUIDLE is not
available then fallback to HALT.
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Cc: stable@vger.kernel.org
Cc: Yazen Ghannam <Yazen.Ghannam@amd.com>
Link: https://lkml.kernel.org/r/20180403140228.58540-1-Yazen.Ghannam@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 1a512c0882bd311c5b5561840fcfbe4c25b8f319 upstream.
A bugfix broke the x32 shmid64_ds and msqid64_ds data structure layout
(as seen from user space) a few years ago: Originally, __BITS_PER_LONG
was defined as 64 on x32, so we did not have padding after the 64-bit
__kernel_time_t fields, After __BITS_PER_LONG got changed to 32,
applications would observe extra padding.
In other parts of the uapi headers we seem to have a mix of those
expecting either 32 or 64 on x32 applications, so we can't easily revert
the path that broke these two structures.
Instead, this patch decouples x32 from the other architectures and moves
it back into arch specific headers, partially reverting the even older
commit 73a2d096fdf2 ("x86: remove all now-duplicate header files").
It's not clear whether this ever made any difference, since at least
glibc carries its own (correct) copy of both of these header files,
so possibly no application has ever observed the definitions here.
Based on a suggestion from H.J. Lu, I tried out the tool from
https://github.com/hjl-tools/linux-header to find other such
bugs, which pointed out the same bug in statfs(), which also has
a separate (correct) copy in glibc.
Fixes: f4b4aae18288 ("x86/headers/uapi: Fix __BITS_PER_LONG value for x32 builds")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "H . J . Lu" <hjl.tools@gmail.com>
Cc: Jeffrey Walton <noloader@gmail.com>
Cc: stable@vger.kernel.org
Cc: "H. Peter Anvin" <hpa@zytor.com>
Link: https://lkml.kernel.org/r/20180424212013.3967461-1-arnd@arndb.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Changes in 4.4.130
cifs: do not allow creating sockets except with SMB1 posix exensions
x86/tsc: Prevent 32bit truncation in calc_hpet_ref()
perf: Return proper values for user stack errors
staging: ion : Donnot wakeup kswapd in ion system alloc
r8152: add Linksys USB3GIGV1 id
Input: drv260x - fix initializing overdrive voltage
ath9k_hw: check if the chip failed to wake up
jbd2: fix use after free in kjournald2()
Revert "ath10k: send (re)assoc peer command when NSS changed"
s390: introduce CPU alternatives
s390: enable CPU alternatives unconditionally
KVM: s390: wire up bpb feature
s390: scrub registers on kernel entry and KVM exit
s390: add optimized array_index_mask_nospec
s390/alternative: use a copy of the facility bit mask
s390: add options to change branch prediction behaviour for the kernel
s390: run user space and KVM guests with modified branch prediction
s390: introduce execute-trampolines for branches
s390: Replace IS_ENABLED(EXPOLINE_*) with IS_ENABLED(CONFIG_EXPOLINE_*)
s390: do not bypass BPENTER for interrupt system calls
s390/entry.S: fix spurious zeroing of r0
s390: move nobp parameter functions to nospec-branch.c
s390: add automatic detection of the spectre defense
s390: report spectre mitigation via syslog
s390: add sysfs attributes for spectre
s390: correct nospec auto detection init order
s390: correct module section names for expoline code revert
bonding: do not set slave_dev npinfo before slave_enable_netpoll in bond_enslave
KEYS: DNS: limit the length of option strings
l2tp: check sockaddr length in pppol2tp_connect()
net: validate attribute sizes in neigh_dump_table()
llc: delete timers synchronously in llc_sk_free()
tcp: don't read out-of-bounds opsize
team: avoid adding twice the same option to the event list
team: fix netconsole setup over team
packet: fix bitfield update race
pppoe: check sockaddr length in pppoe_connect()
vlan: Fix reading memory beyond skb->tail in skb_vlan_tagged_multi
sctp: do not check port in sctp_inet6_cmp_addr
llc: hold llc_sap before release_sock()
llc: fix NULL pointer deref for SOCK_ZAPPED
tipc: add policy for TIPC_NLA_NET_ADDR
net: fix deadlock while clearing neighbor proxy table
tcp: md5: reject TCP_MD5SIG or TCP_MD5SIG_EXT on established sockets
net: af_packet: fix race in PACKET_{R|T}X_RING
ipv6: add RTA_TABLE and RTA_PREFSRC to rtm_ipv6_policy
scsi: mptsas: Disable WRITE SAME
cdrom: information leak in cdrom_ioctl_media_changed()
s390/cio: update chpid descriptor after resource accessibility event
s390/uprobes: implement arch_uretprobe_is_alive()
Linux 4.4.130
Change-Id: I58646180c70ac61da3e2a602085760881d914eb5
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit 783c3b53b9506db3e05daacfe34e0287eebb09d8 upstream.
Implement s390 specific arch_uretprobe_is_alive() to avoid SIGSEGVs
observed with uretprobes in combination with setjmp/longjmp.
See commit 2dea1d9c38e4 ("powerpc/uprobes: Implement
arch_uretprobe_is_alive()") for more details.
With this implemented all test cases referenced in the above commit
pass.
Reported-by: Ziqian SUN <zsun@redhat.com>
Cc: <stable@vger.kernel.org> # v4.3+
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 6cf09958f32b9667bb3ebadf74367c791112771b ]
The main linker script vmlinux.lds.S for the kernel image merges
the expoline code patch tables into two section ".nospec_call_table"
and ".nospec_return_table". This is *not* done for the modules,
there the sections retain their original names as generated by gcc:
".s390_indirect_call", ".s390_return_mem" and ".s390_return_reg".
The module_finalize code has to check for the compiler generated
section names, otherwise no code patching is done. This slows down
the module code in case of "spectre_v2=off".
Cc: stable@vger.kernel.org # 4.16
Fixes: f19fbd5ed6 ("s390: introduce execute-trampolines for branches")
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 6a3d1e81a434fc311f224b8be77258bafc18ccc6 ]
With CONFIG_EXPOLINE_AUTO=y the call of spectre_v2_auto_early() via
early_initcall is done *after* the early_param functions. This
overwrites any settings done with the nobp/no_spectre_v2/spectre_v2
parameters. The code patching for the kernel is done after the
evaluation of the early parameters but before the early_initcall
is done. The end result is a kernel image that is patched correctly
but the kernel modules are not.
Make sure that the nospec auto detection function is called before the
early parameters are evaluated and before the code patching is done.
Fixes: 6e179d64126b ("s390: add automatic detection of the spectre defense")
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit d424986f1d6b16079b3231db0314923f4f8deed1 ]
Set CONFIG_GENERIC_CPU_VULNERABILITIES and provide the two functions
cpu_show_spectre_v1 and cpu_show_spectre_v2 to report the spectre
mitigations.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit bc035599718412cfba9249aa713f90ef13f13ee9 ]
Add a boot message if either of the spectre defenses is active.
The message is
"Spectre V2 mitigation: execute trampolines."
or "Spectre V2 mitigation: limited branch prediction."
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 6e179d64126b909f0b288fa63cdbf07c531e9b1d ]
Automatically decide between nobp vs. expolines if the spectre_v2=auto
kernel parameter is specified or CONFIG_EXPOLINE_AUTO=y is set.
The decision made at boot time due to CONFIG_EXPOLINE_AUTO=y being set
can be overruled with the nobp, nospec and spectre_v2 kernel parameters.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit b2e2f43a01bace1a25bdbae04c9f9846882b727a ]
Keep the code for the nobp parameter handling with the code for
expolines. Both are related to the spectre v2 mitigation.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit d3f468963cd6fd6d2aa5e26aed8b24232096d0e1 ]
when a system call is interrupted we might call the critical section
cleanup handler that re-does some of the operations. When we are between
.Lsysc_vtime and .Lsysc_do_svc we might also redo the saving of the
problem state registers r0-r7:
.Lcleanup_system_call:
[...]
0: # update accounting time stamp
mvc __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
# set up saved register r11
lg %r15,__LC_KERNEL_STACK
la %r9,STACK_FRAME_OVERHEAD(%r15)
stg %r9,24(%r11) # r11 pt_regs pointer
# fill pt_regs
mvc __PT_R8(64,%r9),__LC_SAVE_AREA_SYNC
---> stmg %r0,%r7,__PT_R0(%r9)
The problem is now, that we might have already zeroed out r0.
The fix is to move the zeroing of r0 after sysc_do_svc.
Reported-by: Farhan Ali <alifm@linux.vnet.ibm.com>
Fixes: 7041d28115e91 ("s390: scrub registers on kernel entry and KVM exit")
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit d5feec04fe578c8dbd9e2e1439afc2f0af761ed4 ]
The system call path can be interrupted before the switch back to the
standard branch prediction with BPENTER has been done. The critical
section cleanup code skips forward to .Lsysc_do_svc and bypasses the
BPENTER. In this case the kernel and all subsequent code will run with
the limited branch prediction.
Fixes: eacf67eb9b32 ("s390: run user space and KVM guests with modified branch prediction")
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 2cb370d615e9fbed9e95ed222c2c8f337181aa90 ]
I've accidentally stumbled upon the IS_ENABLED(EXPOLINE_*) lines, which
obviously always evaluate to false. Fix this.
Fixes: f19fbd5ed642 ("s390: introduce execute-trampolines for branches")
Signed-off-by: Eugeniu Rosca <erosca@de.adit-jv.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit f19fbd5ed642dc31c809596412dab1ed56f2f156 ]
Add CONFIG_EXPOLINE to enable the use of the new -mindirect-branch= and
-mfunction_return= compiler options to create a kernel fortified against
the specte v2 attack.
With CONFIG_EXPOLINE=y all indirect branches will be issued with an
execute type instruction. For z10 or newer the EXRL instruction will
be used, for older machines the EX instruction. The typical indirect
call
basr %r14,%r1
is replaced with a PC relative call to a new thunk
brasl %r14,__s390x_indirect_jump_r1
The thunk contains the EXRL/EX instruction to the indirect branch
__s390x_indirect_jump_r1:
exrl 0,0f
j .
0: br %r1
The detour via the execute type instruction has a performance impact.
To get rid of the detour the new kernel parameter "nospectre_v2" and
"spectre_v2=[on,off,auto]" can be used. If the parameter is specified
the kernel and module code will be patched at runtime.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 6b73044b2b0081ee3dd1cd6eaab7dee552601efb ]
Define TIF_ISOLATE_BP and TIF_ISOLATE_BP_GUEST and add the necessary
plumbing in entry.S to be able to run user space and KVM guests with
limited branch prediction.
To switch a user space process to limited branch prediction the
s390_isolate_bp() function has to be call, and to run a vCPU of a KVM
guest associated with the current task with limited branch prediction
call s390_isolate_bp_guest().
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit d768bd892fc8f066cd3aa000eb1867bcf32db0ee ]
Add the PPA instruction to the system entry and exit path to switch
the kernel to a different branch prediction behaviour. The instructions
are added via CPU alternatives and can be disabled with the "nospec"
or the "nobp=0" kernel parameter. If the default behaviour selected
with CONFIG_KERNEL_NOBP is set to "n" then the "nobp=1" parameter can be
used to enable the changed kernel branch prediction.
Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit cf1489984641369611556bf00c48f945c77bcf02 ]
To be able to switch off specific CPU alternatives with kernel parameters
make a copy of the facility bit mask provided by STFLE and use the copy
for the decision to apply an alternative.
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit e2dd833389cc4069a96b57bdd24227b5f52288f5 ]
Add an optimized version of the array_index_mask_nospec function for
s390 based on a compare and a subtract with borrow.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 7041d28115e91f2144f811ffe8a195c696b1e1d0 ]
Clear all user space registers on entry to the kernel and all KVM guest
registers on KVM guest exit if the register does not contain either a
parameter or a result value.
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 35b3fde6203b932b2b1a5b53b3d8808abc9c4f60 ]
The new firmware interfaces for branch prediction behaviour changes
are transparently available for the guest. Nevertheless, there is
new state attached that should be migrated and properly resetted.
Provide a mechanism for handling reset, migration and VSIE.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
[Changed capability number to 152. - Radim]
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 049a2c2d486e8cc82c5cd79fa479c5b105b109e9 ]
Remove the CPU_ALTERNATIVES config option and enable the code
unconditionally. The config option was only added to avoid a conflict
with the named saved segment support. Since that code is gone there is
no reason to keep the CPU_ALTERNATIVES config option.
Just enable it unconditionally to also reduce the number of config
options and make it less likely that something breaks.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 686140a1a9c41d85a4212a1c26d671139b76404b ]
Implement CPU alternatives, which allows to optionally patch newer
instructions at runtime, based on CPU facilities availability.
A new kernel boot parameter "noaltinstr" disables patching.
Current implementation is derived from x86 alternatives. Although
ideal instructions padding (when altinstr is longer then oldinstr)
is added at compile time, and no oldinstr nops optimization has to be
done at runtime. Also couple of compile time sanity checks are done:
1. oldinstr and altinstr must be <= 254 bytes long,
2. oldinstr and altinstr must not have an odd length.
alternative(oldinstr, altinstr, facility);
alternative_2(oldinstr, altinstr1, facility1, altinstr2, facility2);
Both compile time and runtime padding consists of either 6/4/2 bytes nop
or a jump (brcl) + 2 bytes nop filler if padding is longer then 6 bytes.
.altinstructions and .altinstr_replacement sections are part of
__init_begin : __init_end region and are freed after initialization.
Signed-off-by: Vasily Gorbik <gor@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit d3878e164dcd3925a237a20e879432400e369172 upstream.
The TSC calibration code uses HPET as reference. The conversion normalizes
the delta of two HPET timestamps:
hpetref = ((tshpet1 - tshpet2) * HPET_PERIOD) / 1e6
and then divides the normalized delta of the corresponding TSC timestamps
by the result to calulate the TSC frequency.
tscfreq = ((tstsc1 - tstsc2 ) * 1e6) / hpetref
This uses do_div() which takes an u32 as the divisor, which worked so far
because the HPET frequency was low enough that 'hpetref' never exceeded
32bit.
On Skylake machines the HPET frequency increased so 'hpetref' can exceed
32bit. do_div() truncates the divisor, which causes the calibration to
fail.
Use div64_u64() to avoid the problem.
[ tglx: Fixes whitespace mangled patch and rewrote changelog ]
Signed-off-by: Xiaoming Gao <newtongao@tencent.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Cc: peterz@infradead.org
Cc: hpa@zytor.com
Link: https://lkml.kernel.org/r/38894564-4fc9-b8ec-353f-de702839e44e@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Currently, bluetooth are not enabled in gvm. It depends
on bluetooth power and rfkill related deconfigs.
Add these deconfigs to enable bluetooth in gvm.
Change-Id: Ib4b8d07e183852e77b02722584e5467127e68879
Signed-off-by: Song Gao <songg@codeaurora.org>
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Currently, bluetooth chip reset function can not be
controlled through BT_EN gpio pin.
Add bluetooth chip device node along with bt-reset-gpio
to make this function workable.
Change-Id: I8cb9a274f4d5991587a299693d00609128742395
Signed-off-by: Song Gao <songg@codeaurora.org>
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Due to early RVC will continue running during the whole device
bootup period, so RVC's reserved memory should be updated to
contiguous-region to avoid smmu fault.
CRs-Fixed: 2225630
Change-Id: I5d1510f4e9079f6ddd5630b0b736d0d49bc0992b
Signed-off-by: Guchun Chen <guchunc@codeaurora.org>
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Early RVC will enable vig0 layer if it's on in bootloader. So to
meet the purpose LK and kernel can access display hardware at the
same time, this pipe should be reserved in LK and set to not available
to others before RVC exits.
CRs-Fixed: 2225630
Change-Id: I1398db5750c01523e4b755fb4744a6fc976ee8da
Signed-off-by: Guchun Chen <guchunc@codeaurora.org>
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Enable sensor device node to allow Anti-Noise
Cancellation (ANC) algorithm to be running on
sensor subsystem for automotive msm8996 and
apq8096 platforms.
CRs-fixed: 2153236
Change-Id: I213c2eb94f6fe01e7c2ceca2d9033616817db38b
Signed-off-by: Derek Chen <chenche@codeaurora.org>
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Enable IEEE802.11AD WiFi device wil6210.
Change wil6210 PCIe parent for MSM8996 platform.
Change-Id: I58919c766c0e6f0090d309492de1ecf12718824d
Signed-off-by: Zhaoyang Liu <zhaoyang@codeaurora.org>
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Enable preemptirq events to trace irqs/preempt disabled callers,
which help to debug scheduler latency sensitive issues (ex: audio
glitches).
Change-Id: I0894b99ee7279cbb5b20639137e0a9b0caa1b0a9
Signed-off-by: Lingutla Chandrasekhar <clingutla@codeaurora.org>
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