Pull MMC fixes from Ulf Hansson:

 - rtsx_pci: Fix support for some various speed modes

 - sdhci-of-at91: Fix support for GPIO card detect on SAMA5D2

 - sdhci-cadence: Fix support for DDR52 speed mode for eMMC on UniPhier

 - sdhci-acpi: Fix broken WP support on Acer Aspire Switch 10

 - sdhci-acpi: Workaround FW bug for suspend on Lenovo Miix 320

* tag 'mmc-v5.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: rtsx_pci: Fix support for speed-modes that relies on tuning
  mmc: sdhci-of-at91: fix cd-gpios for SAMA5D2
  mmc: sdhci-cadence: set SDHCI_QUIRK2_PRESET_VALUE_BROKEN for UniPhier
  mmc: sdhci-acpi: Disable write protect detection on Acer Aspire Switch 10 (SW5-012)
  mmc: sdhci-acpi: Switch signal voltage back to 3.3V on suspend on external microSD on Lenovo Miix 320

Pull cifs fixes from Steve French:
 "Three small smb3 fixes, two for stable"

* tag '5.6-rc6-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  CIFS: fiemap: do not return EINVAL if get nothing
  CIFS: Increment num_remote_opens stats counter even in case of smb2_query_dir_first
  cifs: potential unintitliazed error code in cifs_getattr()

Merge tag 'kbuild-fixes-v5.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - fix __uint128_t capability test in Kconfig when GCC that defaults to
   32-bit is used to build the 64-bit kernel

 - suppress new noisy Clang warnings -Wpointer-to-enum-cast

 - move the namespace field in Module.symvers for the backward
   compatibility reason for the depmod tool

 - use available compression for initramdisk when INTRAMFS_SOURCE is
   defined, which was the original behavior

 - fix modpost to handle correct large section numbers when it refers to
   modversion CRCs and module namespaces

 - fix comments and documents

* tag 'kbuild-fixes-v5.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  scripts/kallsyms: fix wrong kallsyms_relative_base
  modpost: Get proper section index by get_secindex() instead of st_shndx
  initramfs: restore default compression behavior
  modpost: move the namespace field in Module.symvers last
  kbuild: Disable -Wpointer-to-enum-cast
  kbuild: doc: fix references to other documents
  int128: fix __uint128_t compiler test in Kconfig
  kconfig: introduce m32-flag and m64-flag
  kbuild: Fix inconsistent comment

I have hit the following build error:

  armv7a-hardfloat-linux-gnueabi-ld: drivers/rtc/rtc-max8907.o: in function `max8907_rtc_probe':
  rtc-max8907.c:(.text+0x400): undefined reference to `regmap_irq_get_virq'

max8907 should select REGMAP_IRQ

Fixes: 94c01ab6 ("rtc: add MAX8907 RTC driver")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: NCorentin Labbe <clabbe@baylibre.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

There is the code in the read_symbol function in 'scripts/kallsyms.c':

	if (is_ignored_symbol(name, type))
		return NULL;

	/* Ignore most absolute/undefined (?) symbols. */
	if (strcmp(name, "_text") == 0)
		_text = addr;

But the is_ignored_symbol function returns true for name="_text" and
type='A'. So the next condition is not executed and the _text variable
is always zero.

It makes the wrong kallsyms_relative_base symbol as a result of the code
(CONFIG_KALLSYMS_BASE_RELATIVE is defined):

	if (base_relative) {
		output_label("kallsyms_relative_base");
		output_address(relative_base);
		printf("\n");
	}

Because the output_address function uses the _text variable.

So the kallsyms_lookup function and all related functions in the kernel
do not work properly. For example, the stack trace in oops:

 Call Trace:
 [aa095e58] [809feab8] kobj_ns_ops_tbl+0x7ff09ac8/0x7ff1c1c4 (unreliable)
 [aa095e98] [80002b64] kobj_ns_ops_tbl+0x7f50db74/0x80000010
 [aa095ef8] [809c3d24] kobj_ns_ops_tbl+0x7feced34/0x7ff1c1c4
 [aa095f28] [80002ed0] kobj_ns_ops_tbl+0x7f50dee0/0x80000010
 [aa095f38] [8000f238] kobj_ns_ops_tbl+0x7f51a248/0x80000010

The right stack trace:

 Call Trace:
 [aa095e58] [809feab8] module_vdu_video_init+0x2fc/0x3bc (unreliable)
 [aa095e98] [80002b64] do_one_initcall+0x40/0x1f0
 [aa095ef8] [809c3d24] kernel_init_freeable+0x164/0x1d8
 [aa095f28] [80002ed0] kernel_init+0x14/0x124
 [aa095f38] [8000f238] ret_from_kernel_thread+0x14/0x1c

[masahiroy@kernel.org:

This issue happens on binutils <= 2.22
The following commit fixed it:
https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=d2667025dd30611514810c28bee9709e4623012a

The symbol type of _text is 'T' on binutils >= 2.23
The minimal supported binutils version for the kernel build is 2.21
]
Signed-off-by: NMikhail Petrov <Mikhail.Petrov@mir.dev>
Signed-off-by: NMasahiro Yamada <masahiroy@kernel.org>

There is measurable performance impact in some synthetic tests due to
commit 6d390e4b (locks: fix a potential use-after-free problem when
wakeup a waiter). Fix the race condition instead by clearing the
fl_blocker pointer after the wake_up, using explicit acquire/release
semantics.

This does mean that we can no longer use the clearing of fl_blocker as
the wait condition, so switch the waiters over to checking whether the
fl_blocked_member list_head is empty.
Reviewed-by: Nyangerkun <yangerkun@huawei.com>
Reviewed-by: NNeilBrown <neilb@suse.de>
Fixes: 6d390e4b (locks: fix a potential use-after-free problem when wakeup a waiter)
Signed-off-by: NJeff Layton <jlayton@kernel.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

(uint16_t) st_shndx is limited to 65535(i.e. SHN_XINDEX) so sym_get_data() gets
wrong section index by st_shndx if requested symbol contains extended section
index that is more than 65535.  In this case, we need to get proper section index
by .symtab_shndx section.

Module.symvers generated by building kernel with "-ffunction-sections -fdata-sections"
shows the issue.

Fixes: 56067812 ("kbuild: modversions: add infrastructure for emitting relative CRCs")
Fixes: e84f9fbb ("modpost: refactor namespace_from_kstrtabns() to not hard-code section name")
Signed-off-by: NXiao Yang <yangx.jy@cn.fujitsu.com>
Signed-off-by: NMasahiro Yamada <masahiroy@kernel.org>

This is just a cleanup addition to Jann's fix to properly update the
transaction ID for the slub slowpath in commit fd4d9c7d ("mm: slub:
add missing TID bump..").

The transaction ID is what protects us against any concurrent accesses,
but we should really also make sure to make the 'freelist' comparison
itself always use the same freelist value that we then used as the new
next free pointer.

Jann points out that if we do all of this carefully, we could skip the
transaction ID update for all the paths that only remove entries from
the lists, and only update the TID when adding entries (to avoid the ABA
issue with cmpxchg and list handling re-adding a previously seen value).

But this patch just does the "make sure to cmpxchg the same value we
used" rather than then try to be clever.
Acked-by: NJann Horn <jannh@google.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

When kmem_cache_alloc_bulk() attempts to allocate N objects from a percpu
freelist of length M, and N > M > 0, it will first remove the M elements
from the percpu freelist, then call ___slab_alloc() to allocate the next
element and repopulate the percpu freelist. ___slab_alloc() can re-enable
IRQs via allocate_slab(), so the TID must be bumped before ___slab_alloc()
to properly commit the freelist head change.

Fix it by unconditionally bumping c->tid when entering the slowpath.

Cc: stable@vger.kernel.org
Fixes: ebe909e0 ("slub: improve bulk alloc strategy")
Signed-off-by: NJann Horn <jannh@google.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The TX/RX register should not be treated the same way to allow for better
support of tuning. Fix this by using a default initial value for TX.
Signed-off-by: NRicky Wu <ricky_wu@realtek.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20200316025232.1167-1-ricky_wu@realtek.com
[Ulf: Updated changelog]
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

If we call fiemap on a truncated file with none blocks allocated,
it makes sense we get nothing from this call. No output means
no blocks have been counted, but the call succeeded. It's a valid
response.

Simple example reproducer:
xfs_io -f 'truncate 2M' -c 'fiemap -v' /cifssch/testfile
xfs_io: ioctl(FS_IOC_FIEMAP) ["/cifssch/testfile"]: Invalid argument
Signed-off-by: NMurphy Zhou <jencce.kernel@gmail.com>
Signed-off-by: NSteve French <stfrench@microsoft.com>
Reviewed-by: NPavel Shilovsky <pshilov@microsoft.com>
CC: Stable <stable@vger.kernel.org>

The num_remote_opens counter keeps track of the number of open files which must be
maintained by the server at any point. This is a per-tree-connect counter, and the value
of this counter gets displayed in the /proc/fs/cifs/Stats output as a following...

Open files: 0 total (local), 1 open on server
                             ^^^^^^^^^^^^^^^^
As a thumb-rule, we want to increment this counter for each open/create that we
successfully execute on the server. Similarly, we should decrement the counter when
we successfully execute a close.

In this case, an increment was being missed in case of smb2_query_dir_first,
in case of successful open. As a result, we would underflow the counter and we
could even see the counter go to negative after sufficient smb2_query_dir_first calls.

I tested the stats counter for a bunch of filesystem operations with the fix.
And it looks like the counter looks correct to me.

I also check if we missed the increments and decrements elsewhere. It does not
seem so. Few other cases where an open is done and we don't increment the counter are
the compound calls where the corresponding close is also sent in the request.
Signed-off-by: NShyam Prasad N <nspmangalore@gmail.com>
CC: Stable <stable@vger.kernel.org>
Signed-off-by: NSteve French <stfrench@microsoft.com>
Reviewed-by: NAurelien Aptel <aaptel@suse.com>
Reviewed-by: NPavel Shilovsky <pshilov@microsoft.com>

Smatch complains that "rc" could be uninitialized.

    fs/cifs/inode.c:2206 cifs_getattr() error: uninitialized symbol 'rc'.

Changing it to "return 0;" improves readability as well.

Fixes: cc1baf98c8f6 ("cifs: do not ignore the SYNC flags in getattr")
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NSteve French <stfrench@microsoft.com>
Acked-by: NRonnie Sahlberg <lsahlber@redhat.com>

Pull HID fixes from Jiri Kosina:

 - string buffer formatting fixes in picolcd and sensor drivers, from
   Takashi Iwai

 - two new device IDs from Chen-Tsung Hsieh and Tony Fischetti

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
  HID: add ALWAYS_POLL quirk to lenovo pixart mouse
  HID: google: add moonball USB id
  HID: hid-sensor-custom: Use scnprintf() for avoiding potential buffer overflow
  HID: hid-picolcd_fb: Use scnprintf() for avoiding potential buffer overflow

SAMA5D2x doesn't drive CMD line if GPIO is used as CD line (at least
SAMA5D27 doesn't). Fix this by forcing card-detect in the module
if module-controlled CD is not used.

Fixed commit addresses the problem only for non-removable cards. This
amends it to also cover gpio-cd case.

Cc: stable@vger.kernel.org
Fixes: 7a1e3f14 ("mmc: sdhci-of-at91: force card detect value for non removable devices")
Signed-off-by: NMichał Mirosław <mirq-linux@rere.qmqm.pl>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/8d10950d9940468577daef4772b82a071b204716.1584290561.git.mirq-linux@rere.qmqm.plSigned-off-by: NUlf Hansson <ulf.hansson@linaro.org>

The SDHCI_PRESET_FOR_* registers are not set for the UniPhier platform
integration. (They are all read as zeros).

Set the SDHCI_QUIRK2_PRESET_VALUE_BROKEN quirk flag. Otherwise, the
High Speed DDR mode on the eMMC controller (MMC_TIMING_MMC_DDR52)
would not work.

I split the platform data to give no impact to other platforms,
although the UniPhier platform is currently only the upstream user
of this IP.

The SDHCI_QUIRK2_PRESET_VALUE_BROKEN flag is set if the compatible
string matches to "socionext,uniphier-sd4hc".
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20200312104257.21017-1-yamada.masahiro@socionext.comSigned-off-by: NUlf Hansson <ulf.hansson@linaro.org>

On the Acer Aspire Switch 10 (SW5-012) microSD slot always reports the card
being write-protected even though microSD cards do not have a write-protect
switch at all.

Add a new DMI_QUIRK_SD_NO_WRITE_PROTECT quirk which when set sets
the MMC_CAP2_NO_WRITE_PROTECT flag on the controller for the external SD
slot; and add a DMI quirk table entry which selects this quirk for the
Acer SW5-012.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20200316184753.393458-2-hdegoede@redhat.comSigned-off-by: NUlf Hansson <ulf.hansson@linaro.org>

mmc: sdhci-acpi: Switch signal voltage back to 3.3V on suspend on external microSD on Lenovo Miix 320

Based on a sample of 7 DSDTs from Cherry Trail devices using an AXP288
PMIC depending on the design one of 2 possible LDOs on the PMIC is used
for the MMC signalling voltage, either DLDO3 or GPIO1LDO (GPIO1 pin in
low noise LDO mode).

The Lenovo Miix 320-10ICR uses GPIO1LDO in the SHC1 ACPI device's DSM
methods to set 3.3 or 1.8 signalling voltage and this appears to work
as advertised, so presumably the device is actually using GPIO1LDO for
the external microSD signalling voltage.

But this device has a bug in the _PS0 method of the SHC1 ACPI device,
the DSM remembers the last set signalling voltage and the _PS0 restores
this after a (runtime) suspend-resume cycle, but it "restores" the voltage
on DLDO3 instead of setting it on GPIO1LDO as the DSM method does. DLDO3
is used for the LCD and setting it to 1.8V causes the LCD to go black.

This commit works around this issue by calling the Intel DSM to reset the
signal voltage to 3.3V after the host has been runtime suspended.
This will make the _PS0 method reprogram the DLDO3 voltage to 3.3V, which
leaves it at its original setting fixing the LCD going black.

This commit adds and uses a DMI quirk mechanism to only trigger this
workaround on the Lenovo Miix 320 while leaving the behavior of the
driver unchanged on other devices.

BugLink: https://bugs.freedesktop.org/show_bug.cgi?id=111294
BugLink: https://gitlab.freedesktop.org/drm/intel/issues/355Reported-by: Nrussianneuromancer <russianneuromancer@ya.ru>
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20200316184753.393458-1-hdegoede@redhat.comSigned-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Even though INITRAMFS_SOURCE kconfig option isn't set in most of
defconfigs it is used (set) extensively by various build systems.
Commit f26661e1 ("initramfs: make initramfs compression choice
non-optional") has changed default compression mode. Previously we
compress initramfs using available compression algorithm. Now
we don't use any compression at all by default.
It significantly increases the image size in case of build system
chooses embedded initramfs. Initially I faced with this issue while
using buildroot.

As of today it's not possible to set preferred compression mode
in target defconfig as this option depends on INITRAMFS_SOURCE
being set. Modification of all build systems either doesn't look
like good option.

Let's instead rewrite initramfs compression mode choices list
the way that "INITRAMFS_COMPRESSION_NONE" will be the last option
in the list. In that case it will be chosen only if all other
options (which implements any compression) are not available.
Signed-off-by: NEugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: NMasahiro Yamada <masahiroy@kernel.org>

In order to preserve backwards compatability with kmod tools, we have to
move the namespace field in Module.symvers last, as the depmod -e -E
option looks at the first three fields in Module.symvers to check symbol
versions (and it's expected they stay in the original order of crc,
symbol, module).

In addition, update an ancient comment above read_dump() in modpost that
suggested that the export type field in Module.symvers was optional. I
suspect that there were historical reasons behind that comment that are
no longer accurate. We have been unconditionally printing the export
type since 2.6.18 (commit bd5cbced), which is over a decade ago now.

Fix up read_dump() to treat each field as non-optional. I suspect the
original read_dump() code treated the export field as optional in order
to support pre <= 2.6.18 Module.symvers (which did not have the export
type field). Note that although symbol namespaces are optional, the
field will not be omitted from Module.symvers if a symbol does not have
a namespace. In this case, the field will simply be empty and the next
delimiter or end of line will follow.

Cc: stable@vger.kernel.org
Fixes: cb9b55d2 ("modpost: add support for symbol namespaces")
Tested-by: NMatthias Maennich <maennich@google.com>
Reviewed-by: NMatthias Maennich <maennich@google.com>
Reviewed-by: NLucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: NJessica Yu <jeyu@kernel.org>
Signed-off-by: NMasahiro Yamada <masahiroy@kernel.org>

Pull ARM fixes from Russell King:

 - allow use of ARMv8 arch timer in 32-bit VDSO

 - rename missed .fixup section

 - fix kbuild issue with stack protector GCC plugin

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8961/2: Fix Kbuild issue caused by per-task stack protector GCC plugin
  ARM: 8958/1: rename missed uaccess .fixup section
  ARM: 8957/1: VDSO: Match ARMv8 timer in cntvct_functional()

A lenovo pixart mouse (17ef:608d) is afflicted common the the malfunction
where it disconnects and reconnects every minute--each time incrementing
the device number. This patch adds the device id of the device and
specifies that it needs the HID_QUIRK_ALWAYS_POLL quirk in order to
work properly.
Signed-off-by: NTony Fischetti <tony.fischetti@gmail.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Add 1 additional hammer-like device.
Signed-off-by: NChen-Tsung Hsieh <chentsung@chromium.org>
Reviewed-by: NNicolas Boichat <drinkcat@chromium.org>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Pull irq fix from Thomas Gleixner:
 "A single commit to handle an erratum in Cavium ThunderX to prevent
  access to GIC registers which are broken in the implementation"

* tag 'irq-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/gic-v3: Workaround Cavium erratum 38539 when reading GICD_TYPER2

Pull futex fix from Thomas Gleixner:
 "Fix for yet another subtle futex issue.

  The futex code used ihold() to prevent inodes from vanishing, but
  ihold() does not guarantee inode persistence. Replace the inode
  pointer with a per boot, machine wide, unique inode identifier.

  The second commit fixes the breakage of the hash mechanism which
  causes a 100% performance regression"

* tag 'locking-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  futex: Unbreak futex hashing
  futex: Fix inode life-time issue

Pull x86 fixes from Thomas Gleixner:
 "Two fixes for x86:

   - Map EFI runtime service data as encrypted when SEV is enabled.

     Otherwise e.g. SMBIOS data cannot be properly decoded by dmidecode.

   - Remove the warning in the vector management code which triggered
     when a managed interrupt affinity changed outside of a CPU hotplug
     operation.

     The warning was correct until the recent core code change that
     introduced a CPU isolation feature which needs to migrate managed
     interrupts away from online CPUs under certain conditions to
     achieve the isolation"

* tag 'x86-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/vector: Remove warning on managed interrupt migration
  x86/ioremap: Map EFI runtime services data as encrypted for SEV

Pull perf fixes from Thomas Gleixner:
 "A pile of perf fixes:

  Kernel side:

   - AMD uncore driver: Replace the open coded sanity check with the
     core variant, which provides the correct error code and also leaves
     a hint in dmesg

  Tooling:

   - Fix the stdio input handling with glibc versions >= 2.28

   - Unbreak the futex-wake benchmark which was reduced to 0 test
     threads due to the conversion to cpumaps

   - Initialize sigaction structs before invoking sys_sigactio()

   - Plug the mapfile memory leak in perf jevents

   - Fix off by one relative directory includes

   - Fix an undefined string comparison in perf diff"

* tag 'perf-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/amd/uncore: Replace manual sampling check with CAP_NO_INTERRUPT flag
  tools: Fix off-by 1 relative directory includes
  perf jevents: Fix leak of mapfile memory
  perf bench: Clear struct sigaction before sigaction() syscall
  perf bench futex-wake: Restore thread count default to online CPU count
  perf top: Fix stdio interface input handling with glibc 2.28+
  perf diff: Fix undefined string comparision spotted by clang's -Wstring-compare
  perf symbols: Don't try to find a vmlinux file when looking for kernel modules
  perf bench: Share some global variables to fix build with gcc 10
  perf parse-events: Use asprintf() instead of strncpy() to read tracepoint files
  perf env: Do not return pointers to local variables
  perf tests bp_account: Make global variable static

Pull timer fix from Thomas Gleixner:
 "A single fix adding the missing time namespace adjustment in
  sys/sysinfo which caused sys/sysinfo to be inconsistent with
  /proc/uptime when read from a task inside a time namespace"

* tag 'timers-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sys/sysinfo: Respect boottime inside time namespace

Pull RAS fixes from Thomas Gleixner:
 "Two RAS related fixes:

   - Shut down the per CPU thermal throttling poll work properly when a
     CPU goes offline.

     The missing shutdown caused the poll work to be migrated to a
     unbound worker which triggered warnings about the usage of
     smp_processor_id() in preemptible context

   - Fix the PPIN feature initialization which missed to enable the
     functionality when PPIN_CTL was enabled but the MSR locked against
     updates"

* tag 'ras-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mce: Fix logic and comments around MSR_PPIN_CTL
  x86/mce/therm_throt: Undo thermal polling properly on CPU offline

Pull EFI fixes from Thomas Gleixner:
 "Two EFI fixes:

   - Prevent a race and buffer overflow in the sysfs efivars interface
     which causes kernel memory corruption.

   - Add the missing NULL pointer checks in efivar_store_raw()"

* tag 'efi-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi: Add a sanity check to efivar_store_raw()
  efi: Fix a race and a buffer overflow while reading efivars via sysfs

Pull IOMMU fixes from Joerg Roedel:

 - Intel VT-d fixes:
    - RCU list handling fixes
    - Replace WARN_TAINT with pr_warn + add_taint for reporting firmware
      issues
    - DebugFS fixes
    - Fix for hugepage handling in iova_to_phys implementation
    - Fix for handling VMD devices, which have a domain number which
      doesn't fit into 16 bits
    - Warning message fix

 - MSI allocation fix for iommu-dma code

 - Sign-extension fix for io page-table code

 - Fix for AMD-Vi to properly update the is-running bit when AVIC is
   used

* tag 'iommu-fixes-v5.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/vt-d: Populate debugfs if IOMMUs are detected
  iommu/amd: Fix IOMMU AVIC not properly update the is_run bit in IRTE
  iommu/vt-d: Ignore devices with out-of-spec domain number
  iommu/vt-d: Fix the wrong printing in RHSA parsing
  iommu/vt-d: Fix debugfs register reads
  iommu/vt-d: quirk_ioat_snb_local_iommu: replace WARN_TAINT with pr_warn + add_taint
  iommu/vt-d: dmar_parse_one_rmrr: replace WARN_TAINT with pr_warn + add_taint
  iommu/vt-d: dmar: replace WARN_TAINT with pr_warn + add_taint
  iommu/vt-d: Silence RCU-list debugging warnings
  iommu/vt-d: Fix RCU-list bugs in intel_iommu_init()
  iommu/dma: Fix MSI reservation allocation
  iommu/io-pgtable-arm: Fix IOVA validation for 32-bit
  iommu/vt-d: Fix a bug in intel_iommu_iova_to_phys() for huge page
  iommu/vt-d: Fix RCU list debugging warnings

Merge tag 'irqchip-fixes-5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent

Pull irqchip fixes from Marc Zyngier:

- Add workaround for Cavium/Marvell ThunderX unimplemented GIC registers

Pull i2c fixes from Wolfram Sang:
 "I2C has quite some regression fixes this time.

  One is also related to watchdogs, we have proper acks from Guenter for
  them"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: acpi: put device when verifying client fails
  misc: eeprom: at24: fix regulator underflow
  i2c: gpio: suppress error on probe defer
  macintosh: windfarm: fix MODINFO regression
  i2c: designware-pci: Fix BUG_ON during device removal
  i2c: i801: Do not add ICH_RES_IO_SMI for the iTCO_wdt device
  watchdog: iTCO_wdt: Make ICH_RES_IO_SMI optional
  watchdog: iTCO_wdt: Export vendorsupport

Pull ARC fixes from Vineet Gupta:

 - Fix __ALIGN_STR and __ALIGN to not use default junk padding

 - Misc Kconfig cleanups, header updates

* tag 'arc-5.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: define __ALIGN_STR and __ALIGN symbols for ARC
  ARC: show_regs: reduce lines of output
  ARC: Replace <linux/clk-provider.h> by <linux/of_clk.h>
  ARC: fpu: fix randconfig build error reported by 0-day test service
  ARC: fix some Kconfig typos
  ARC: Cleanup old Kconfig IO scheduler options

Pull kvm fixes from Paolo Bonzini:
 "Bugfixes for x86 and s390"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: nVMX: avoid NULL pointer dereference with incorrect EVMCS GPAs
  KVM: x86: Initializing all kvm_lapic_irq fields in ioapic_write_indirect
  KVM: VMX: Condition ENCLS-exiting enabling on CPU support for SGX1
  KVM: s390: Also reset registers in sync regs for initial cpu reset
  KVM: fix Kconfig menu text for -Werror
  KVM: x86: remove stale comment from struct x86_emulate_ctxt
  KVM: x86: clear stale x86_emulate_ctxt->intercept value
  KVM: SVM: Fix the svm vmexit code for WRMSR
  KVM: X86: Fix dereference null cpufreq policy

Currently, the intel iommu debugfs directory(/sys/kernel/debug/iommu/intel)
gets populated only when DMA remapping is enabled (dmar_disabled = 0)
irrespective of whether interrupt remapping is enabled or not.

Instead, populate the intel iommu debugfs directory if any IOMMUs are
detected.

Cc: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: ee2636b8 ("iommu/vt-d: Enable base Intel IOMMU debugfs support")
Signed-off-by: NMegha Dey <megha.dey@linux.intel.com>
Signed-off-by: NLu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: NJoerg Roedel <jroedel@suse.de>

Pull clk fixes from Stephen Boyd:
 "A small collection of fixes. I'll make another sweep soon to look for
  more fixes for this -rc series.

   - Mark device node const in of_clk_get_parent APIs to ease landing
     changes in users later

   - Fix flag for Qualcomm SC7180 video clocks where we thought it would
     never turn off but actually hardware takes care of it

   - Remove disp_cc_mdss_rscc_ahb_clk on Qualcomm SC7180 SoCs because
     this clk is always on anyway

   - Correct some bad dt-binding numbers for i.MX8MN SoCs"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: imx8mn: Fix incorrect clock defines
  clk: qcom: dispcc: Remove support of disp_cc_mdss_rscc_ahb_clk
  clk: qcom: videocc: Update the clock flag for video_cc_vcodec0_core_clk
  of: clk: Make of_clk_get_parent_{count,name}() parameter const

When an EVMCS enabled L1 guest on KVM will tries doing enlightened VMEnter
with EVMCS GPA = 0 the host crashes because the

evmcs_gpa != vmx->nested.hv_evmcs_vmptr

condition in nested_vmx_handle_enlightened_vmptrld() will evaluate to
false (as nested.hv_evmcs_vmptr is zeroed after init). The crash will
happen on vmx->nested.hv_evmcs pointer dereference.

Another problematic EVMCS ptr value is '-1' but it only causes host crash
after nested_release_evmcs() invocation. The problem is exactly the same as
with '0', we mistakenly think that the EVMCS pointer hasn't changed and
thus nested.hv_evmcs_vmptr is valid.

Resolve the issue by adding an additional !vmx->nested.hv_evmcs
check to nested_vmx_handle_enlightened_vmptrld(), this way we will
always be trying kvm_vcpu_map() when nested.hv_evmcs is NULL
and this is supposed to catch all invalid EVMCS GPAs.

Also, initialize hv_evmcs_vmptr to '0' in nested_release_evmcs()
to be consistent with initialization where we don't currently
set hv_evmcs_vmptr to '-1'.

Cc: stable@vger.kernel.org
Signed-off-by: NVitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>