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Author SHA1 Message Date
Leonardo Bras
988896bb61 x86/kvm/fpu: Remove kvm_vcpu_arch.guest_supported_xcr0
kvm_vcpu_arch currently contains the guest supported features in both
guest_supported_xcr0 and guest_fpu.fpstate->user_xfeatures field.

Currently both fields are set to the same value in
kvm_vcpu_after_set_cpuid() and are not changed anywhere else after that.

Since it's not good to keep duplicated data, remove guest_supported_xcr0.

To keep the code more readable, introduce kvm_guest_supported_xcr()
and kvm_guest_supported_xfd() to replace the previous usages of
guest_supported_xcr0.

Signed-off-by: Leonardo Bras <leobras@redhat.com>
Message-Id: <20220217053028.96432-3-leobras@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-02-17 10:06:49 -05:00
Leonardo Bras
ad856280dd x86/kvm/fpu: Limit guest user_xfeatures to supported bits of XCR0
During host/guest switch (like in kvm_arch_vcpu_ioctl_run()), the kernel
swaps the fpu between host/guest contexts, by using fpu_swap_kvm_fpstate().

When xsave feature is available, the fpu swap is done by:
- xsave(s) instruction, with guest's fpstate->xfeatures as mask, is used
  to store the current state of the fpu registers to a buffer.
- xrstor(s) instruction, with (fpu_kernel_cfg.max_features &
  XFEATURE_MASK_FPSTATE) as mask, is used to put the buffer into fpu regs.

For xsave(s) the mask is used to limit what parts of the fpu regs will
be copied to the buffer. Likewise on xrstor(s), the mask is used to
limit what parts of the fpu regs will be changed.

The mask for xsave(s), the guest's fpstate->xfeatures, is defined on
kvm_arch_vcpu_create(), which (in summary) sets it to all features
supported by the cpu which are enabled on kernel config.

This means that xsave(s) will save to guest buffer all the fpu regs
contents the cpu has enabled when the guest is paused, even if they
are not used.

This would not be an issue, if xrstor(s) would also do that.

xrstor(s)'s mask for host/guest swap is basically every valid feature
contained in kernel config, except XFEATURE_MASK_PKRU.
Accordingto kernel src, it is instead switched in switch_to() and
flush_thread().

Then, the following happens with a host supporting PKRU starts a
guest that does not support it:
1 - Host has XFEATURE_MASK_PKRU set. 1st switch to guest,
2 - xsave(s) fpu regs to host fpustate (buffer has XFEATURE_MASK_PKRU)
3 - xrstor(s) guest fpustate to fpu regs (fpu regs have XFEATURE_MASK_PKRU)
4 - guest runs, then switch back to host,
5 - xsave(s) fpu regs to guest fpstate (buffer now have XFEATURE_MASK_PKRU)
6 - xrstor(s) host fpstate to fpu regs.
7 - kvm_vcpu_ioctl_x86_get_xsave() copy guest fpstate to userspace (with
    XFEATURE_MASK_PKRU, which should not be supported by guest vcpu)

On 5, even though the guest does not support PKRU, it does have the flag
set on guest fpstate, which is transferred to userspace via vcpu ioctl
KVM_GET_XSAVE.

This becomes a problem when the user decides on migrating the above guest
to another machine that does not support PKRU: the new host restores
guest's fpu regs to as they were before (xrstor(s)), but since the new
host don't support PKRU, a general-protection exception ocurs in xrstor(s)
and that crashes the guest.

This can be solved by making the guest's fpstate->user_xfeatures hold
a copy of guest_supported_xcr0. This way, on 7 the only flags copied to
userspace will be the ones compatible to guest requirements, and thus
there will be no issue during migration.

As a bonus, it will also fail if userspace tries to set fpu features
(with the KVM_SET_XSAVE ioctl) that are not compatible to the guest
configuration.  Such features will never be returned by KVM_GET_XSAVE
or KVM_GET_XSAVE2.

Also, since kvm_vcpu_after_set_cpuid() now sets fpstate->user_xfeatures,
there is not need to set it in kvm_check_cpuid(). So, change
fpstate_realloc() so it does not touch fpstate->user_xfeatures if a
non-NULL guest_fpu is passed, which is the case when kvm_check_cpuid()
calls it.

Signed-off-by: Leonardo Bras <leobras@redhat.com>
Message-Id: <20220217053028.96432-2-leobras@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-02-17 10:05:57 -05:00
Jens Axboe
aba2081e0a tps6598x: clear int mask on probe failure
The interrupt mask is enabled before any potential failure points in
the driver, which can leave a failure path where we exit with
interrupts enabled but the device not live. This causes an infinite
stream of interrupts on an Apple M1 Pro laptop on USB-C.

Add a failure label that's used post enabling interrupts, where we
mask them again before returning an error.

Suggested-by: Sven Peter <sven@svenpeter.dev>
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Link: https://lore.kernel.org/r/e6b80669-20f3-06e7-9ed5-8951a9c6db6f@kernel.dk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 16:02:27 +01:00
Xin Long
35a79e64de ping: fix the dif and sdif check in ping_lookup
When 'ping' changes to use PING socket instead of RAW socket by:

   # sysctl -w net.ipv4.ping_group_range="0 100"

There is another regression caused when matching sk_bound_dev_if
and dif, RAW socket is using inet_iif() while PING socket lookup
is using skb->dev->ifindex, the cmd below fails due to this:

  # ip link add dummy0 type dummy
  # ip link set dummy0 up
  # ip addr add 192.168.111.1/24 dev dummy0
  # ping -I dummy0 192.168.111.1 -c1

The issue was also reported on:

  https://github.com/iputils/iputils/issues/104

But fixed in iputils in a wrong way by not binding to device when
destination IP is on device, and it will cause some of kselftests
to fail, as Jianlin noticed.

This patch is to use inet(6)_iif and inet(6)_sdif to get dif and
sdif for PING socket, and keep consistent with RAW socket.

Fixes: c319b4d76b ("net: ipv4: add IPPROTO_ICMP socket kind")
Reported-by: Jianlin Shi <jishi@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-17 15:01:20 +00:00
Phillip Potter
695eac3c62 staging: r8188eu: correct long line warnings near prior DBG_88E calls
Where it is possible (without out-of-patch-series-scope large scale
refactoring), correct code to remove checkpatch warnings about lines
that are too long, also correcting operator spacing where appropriate
for these lines as well. These warnings occur mostly due to so many
DBG_88E removals and parentheses tweaks etc. being adjacent to such
long lines, which are therefore included in the resultant diff.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20220216010709.791-16-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 16:00:36 +01:00
Phillip Potter
7e2f6bf6ad staging: r8188eu: remove padapter param from aes_decipher function
Remove padapter parameter from aes_decipher function in
core/rtw_security.c, as I added it previously during debugging tweaks
and it is no longer required.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20220216010709.791-15-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 16:00:36 +01:00
Phillip Potter
9106c8c789 staging: r8188eu: remove rtw_sctx_chk_waring_status function
Remove the rtw_sctx_chk_waring_status function from core/rtw_amit.c,
as it has only one caller which is unnecessary.

Suggested-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20220216010709.791-14-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 16:00:36 +01:00
Phillip Potter
fee26e2257 staging: r8188eu: fix lines modified by DBG_88E cleanup
A number of style problems were left behind by the DBG_88E cleanup:
(1) Empty if/else blocks.
(2) Parenthesised if/while statements containing only one line.
(3) Entire blocks which server zero purpose after removal of DBG_88E.
(4) Various warnings about whitespace, and constant comparison order.
(5) Use of __constant_htons instead when htons should be used.

Fix up these issues across the driver in any file touched by the
previous cleanup. Long line warnings will be addresses in a later
patch.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20220216010709.791-13-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 16:00:36 +01:00
Phillip Potter
db381acc41 staging: r8188eu: remove rtw_debug module parameter
Remove rtw_debug module parameter, and also the internal GlobalDebugLevel
flag and all places where it is referenced. As hal/odm_debug.c is now
essentially empty, also remove this file and edit the Makefile to no
longer reference it. The DBG_88E macro was the last user of these and
has now been removed, making the parameter and flag redundant.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20220216010709.791-12-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 16:00:36 +01:00
Phillip Potter
cd480b0cc9 staging: r8188eu: remove DBG_88E macro definition
Remove DBG_88E macro definition as it has no remaining callers within
the driver. This is part of the ongoing effort to cleanup the driver to
use standard debug mechanisms where appropriate.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20220216010709.791-11-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 16:00:36 +01:00
Phillip Potter
ef04359725 staging: r8188eu: remove all aliased DBG_88E calls
Remove all remaining calls to preprocessor aliases of DBG_88E, as well
as these definitions themselves. This is a prerequisite for removing
the DBG_88E macro itself.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20220216010709.791-10-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 16:00:36 +01:00
Phillip Potter
475dae07f1 staging: r8188eu: remove remaining DBG_88E call from include/usb_ops.h
Remove the one remaining DBG_88E call from include/usb_ops.h. After
some thought, it makes more sense to just entirely strip all of these
calls, so that debugging code in the driver can be more consistent and
useful going forwards.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20220216010709.791-9-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 16:00:36 +01:00
Phillip Potter
8a1961c95e staging: r8188eu: remove remaining DBG_88E calls from os_dep subdir
Remove all remaining DBG_88E calls from the os_dep subdirectory. After
some thought, it makes more sense to just entirely strip all of these
calls, so that debugging code in the driver can be more consistent and
useful going forwards.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20220216010709.791-8-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 16:00:36 +01:00
Phillip Potter
1cdb45322a staging: r8188eu: remove DBG_88E calls from os_dep/ioctl_linux.c
Remove all remaining DBG_88E calls from os_dep/ioctl_linux.c, patching
separately from the rest of the os_dep subdirectory for ease of review
due to the sheer number of calls. After some thought, it makes more
sense to just entirely strip all of these calls, so that debugging
code in the driver can be more consistent and useful going forwards.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20220216010709.791-7-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 16:00:36 +01:00
Phillip Potter
db67ebf6b4 staging: r8188eu: remove DBG_88E calls from hal subdir
Remove all remaining DBG_88E calls from the hal subdirectory. After some
thought, it makes more sense to just entirely strip all of these calls,
so that debugging code in the driver can be more consistent and useful
going forwards.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20220216010709.791-6-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 16:00:35 +01:00
Phillip Potter
34b6d9434e staging: r8188eu: remove DBG_88E calls from core subdir
Remove all remaining DBG_88E calls from the core subdirectory. After some
thought, it makes more sense to just entirely strip all of these calls,
so that debugging code in the driver can be more consistent and useful
going forwards.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20220216010709.791-5-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 16:00:35 +01:00
Phillip Potter
dbc96a32e4 staging: r8188eu: remove converted DBG_88E calls from core/rtw_mlme_ext.c
Remove all the netdev_dbg/pr_debug calls that were previously converted
from DBG_88E inside core/rtw_mlme_ext.c. Due to the sheer number of
lines, this patch is separated out for ease of review. After some thought,
it makes more sense to just entirely strip all of these calls, so that
debugging code in the driver can be more consistent and useful going
forwards.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20220216010709.791-4-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 16:00:35 +01:00
Phillip Potter
1663e5f863 staging: r8188eu: remove smaller sets of converted DBG_88E calls
Remove all the smaller sets of dev_dbg/netdev_dbg/pr_debug calls that
were previously converted from DBG_88E. After some thought, it makes
more sense to just entirely strip all of these calls, so that debugging
code in the driver can be more consistent and useful going forwards.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20220216010709.791-3-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 16:00:35 +01:00
Phillip Potter
973aeaee50 staging: r8188eu: remove previously converted DBG_88E_LEVEL calls
Remove all netdev_dbg and dev_dbg calls that were previously converted
from DBG_88E_LEVEL. After some thought, it makes more sense to just
entirely strip all of these calls, so that debugging code in the driver
can be more consistent and useful going forwards.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20220216010709.791-2-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 16:00:35 +01:00
Martin Kaiser
f24bd333b4 staging: r8188eu: struct usb_suspend_parm is not used
struct usb_suspend_parm is not used. Remove it.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220216081657.622467-4-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 16:00:07 +01:00
Martin Kaiser
0077e86a5b staging: r8188eu: evt_done_cnt is set but not used
evt_done_cnt in struct evt_priv is set but not used. Remove it.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220216081657.622467-3-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 16:00:06 +01:00
Martin Kaiser
fa0d50f2ee staging: r8188eu: evt_allocated_buf is not used
evt_allocated_buf in struct evt_priv is not used. Remove it.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220216081657.622467-2-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 16:00:06 +01:00
Colin Ian King
88daa27a28 staging: wfx: Fix spelling mistake "unexpectly" -> "unexpectedly"
There is a spelling mistake in a dev_warn message. Fix it.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20220217104747.15424-1-colin.i.king@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 15:59:41 +01:00
Jérôme Pouiller
2da0d48778 staging: wfx: fix DT bindings location
Currently, the DT bindings the wfx driver cannot be processed by make
dt_binding_check. We need to place it somewhere into
Documentation/devicetree/bindings/.

After that change, we are able to get warnings from dt_binding_check and
fix them.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20220217103248.183770-1-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 15:59:19 +01:00
Jérôme Pouiller
96e0cbca1c staging: wfx: apply the necessary SDIO quirks for the Silabs WF200
Until now, the SDIO quirks are applied directly from the driver.
However, it is better to apply the quirks before driver probing. So,
this patch relocate the quirks in the MMC framework.

Note that the WF200 has no valid SDIO VID/PID. Therefore, we match DT
rather than on the SDIO VID/PID.

Reviewed-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20220216093112.92469-3-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 15:58:48 +01:00
Jérôme Pouiller
5f86ecba8e staging: wfx: WF200 has no official SDIO IDs
Some may think that SDIO_VENDOR_ID_SILABS / SDIO_DEVICE_ID_SILABS_WF200
are official SDIO IDs. However, it is not the case, the values used by
WF200 are not official (BTW, the driver rely on the DT rather than on
the SDIO IDs to probe the device).

To avoid any confusion, remove the definitions SDIO_*_ID_SILABS* and use
raw values.

Reviewed-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20220216093112.92469-2-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 15:58:48 +01:00
Michael Straube
5df60184a2 staging: r8188eu: rename CCKSwingTable_Ch1_Ch13
After removing CCKSwingTable_Ch14 there is only one table left and we
can rename CCKSwingTable_Ch1_Ch13 to simply cck_swing_table.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220216194038.6762-4-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 15:58:21 +01:00
Michael Straube
d5890d9264 staging: r8188eu: bCCKinCH14 is read-only
The variable bCCKinCH14 in struct odm_rf_cal is never set. It stays
at its default value 0. Remove bCCKinCH14 from struct odm_rf_cal and
remove related dead code.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220216194038.6762-3-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 15:58:21 +01:00
Michael Straube
d746f5bcb0 staging: r8188eu: remove unused enum
Remove an unused enum from usb_halinit.c.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220216194038.6762-2-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-17 15:58:21 +01:00
Laibin Qiu
e92bc4cd34 block/wbt: fix negative inflight counter when remove scsi device
Now that we disable wbt by set WBT_STATE_OFF_DEFAULT in
wbt_disable_default() when switch elevator to bfq. And when
we remove scsi device, wbt will be enabled by wbt_enable_default.
If it become false positive between wbt_wait() and wbt_track()
when submit write request.

The following is the scenario that triggered the problem.

T1                          T2                           T3
                            elevator_switch_mq
                            bfq_init_queue
                            wbt_disable_default <= Set
                            rwb->enable_state (OFF)
Submit_bio
blk_mq_make_request
rq_qos_throttle
<= rwb->enable_state (OFF)
                                                         scsi_remove_device
                                                         sd_remove
                                                         del_gendisk
                                                         blk_unregister_queue
                                                         elv_unregister_queue
                                                         wbt_enable_default
                                                         <= Set rwb->enable_state (ON)
q_qos_track
<= rwb->enable_state (ON)
^^^^^^ this request will mark WBT_TRACKED without inflight add and will
lead to drop rqw->inflight to -1 in wbt_done() which will trigger IO hung.

Fix this by move wbt_enable_default() from elv_unregister to
bfq_exit_queue(). Only re-enable wbt when bfq exit.

Fixes: 76a8040817 ("blk-wbt: make sure throttle is enabled properly")

Remove oneline stale comment, and kill one oneshot local variable.

Signed-off-by: Ming Lei <ming.lei@rehdat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/linux-block/20211214133103.551813-1-qiulaibin@huawei.com/
Signed-off-by: Laibin Qiu <qiulaibin@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-02-17 07:54:03 -07:00
Christoph Hellwig
7a5428dcb7 block: fix surprise removal for drivers calling blk_set_queue_dying
Various block drivers call blk_set_queue_dying to mark a disk as dead due
to surprise removal events, but since commit 8e141f9eb8 that doesn't
work given that the GD_DEAD flag needs to be set to stop I/O.

Replace the driver calls to blk_set_queue_dying with a new (and properly
documented) blk_mark_disk_dead API, and fold blk_set_queue_dying into the
only remaining caller.

Fixes: 8e141f9eb8 ("block: drain file system I/O on del_gendisk")
Reported-by: Markus Blöchl <markus.bloechl@ipetronik.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Link: https://lore.kernel.org/r/20220217075231.1140-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-02-17 07:54:03 -07:00
Haimin Zhang
cc8f7fe1f5 block-map: add __GFP_ZERO flag for alloc_page in function bio_copy_kern
Add __GFP_ZERO flag for alloc_page in function bio_copy_kern to initialize
the buffer of a bio.

Signed-off-by: Haimin Zhang <tcs.kernel@gmail.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220216084038.15635-1-tcs.kernel@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-02-17 07:54:03 -07:00
Mateusz Jończyk
42f8bcb37e platform/dcdbas: move EXPORT_SYMBOL after function
The declaration
        EXPORT_SYMBOL(dcdbas_smi_request);
was placed after smi_request_store(), which made a false impression that
dcdbas_smi_request() was not exported.

Signed-off-by: Mateusz Jończyk <mat.jonczyk@o2.pl>
Cc: Stuart Hayes <stuart.w.hayes@gmail.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Mark Gross <markgross@kernel.org>
Link: https://lore.kernel.org/r/20220212125908.357588-1-mat.jonczyk@o2.pl
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2022-02-17 15:53:57 +01:00
Anton Romanov
3a55f72924 kvm: x86: Disable KVM_HC_CLOCK_PAIRING if tsc is in always catchup mode
If vcpu has tsc_always_catchup set each request updates pvclock data.
KVM_HC_CLOCK_PAIRING consumers such as ptp_kvm_x86 rely on tsc read on
host's side and do hypercall inside pvclock_read_retry loop leading to
infinite loop in such situation.

v3:
    Removed warn
    Changed return code to KVM_EFAULT
v2:
    Added warn

Signed-off-by: Anton Romanov <romanton@google.com>
Message-Id: <20220216182653.506850-1-romanton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-02-17 09:52:50 -05:00
Wanpeng Li
4cb9a998b1 KVM: Fix lockdep false negative during host resume
I saw the below splatting after the host suspended and resumed.

   WARNING: CPU: 0 PID: 2943 at kvm/arch/x86/kvm/../../../virt/kvm/kvm_main.c:5531 kvm_resume+0x2c/0x30 [kvm]
   CPU: 0 PID: 2943 Comm: step_after_susp Tainted: G        W IOE     5.17.0-rc3+ #4
   RIP: 0010:kvm_resume+0x2c/0x30 [kvm]
   Call Trace:
    <TASK>
    syscore_resume+0x90/0x340
    suspend_devices_and_enter+0xaee/0xe90
    pm_suspend.cold+0x36b/0x3c2
    state_store+0x82/0xf0
    kernfs_fop_write_iter+0x1b6/0x260
    new_sync_write+0x258/0x370
    vfs_write+0x33f/0x510
    ksys_write+0xc9/0x160
    do_syscall_64+0x3b/0xc0
    entry_SYSCALL_64_after_hwframe+0x44/0xae

lockdep_is_held() can return -1 when lockdep is disabled which triggers
this warning. Let's use lockdep_assert_not_held() which can detect
incorrect calls while holding a lock and it also avoids false negatives
when lockdep is disabled.

Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Message-Id: <1644920142-81249-1-git-send-email-wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-02-17 09:52:50 -05:00
Aaron Lewis
127770ac0d KVM: x86: Add KVM_CAP_ENABLE_CAP to x86
Follow the precedent set by other architectures that support the VCPU
ioctl, KVM_ENABLE_CAP, and advertise the VM extension, KVM_CAP_ENABLE_CAP.
This way, userspace can ensure that KVM_ENABLE_CAP is available on a
vcpu before using it.

Fixes: 5c919412fe ("kvm/x86: Hyper-V synthetic interrupt controller")
Signed-off-by: Aaron Lewis <aaronlewis@google.com>
Message-Id: <20220214212950.1776943-1-aaronlewis@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-02-17 09:52:50 -05:00
Daniele Palmas
21e8a96377 net: usb: cdc_mbim: avoid altsetting toggling for Telit FN990
Add quirk CDC_MBIM_FLAG_AVOID_ALTSETTING_TOGGLE for Telit FN990
0x1071 composition in order to avoid bind error.

Signed-off-by: Daniele Palmas <dnlplm@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-17 14:50:43 +00:00
Oliver Upton
a867e9d0cc KVM: arm64: Don't miss pending interrupts for suspended vCPU
In order to properly emulate the WFI instruction, KVM reads back
ICH_VMCR_EL2 and enables doorbells for GICv4. These preparations are
necessary in order to recognize pending interrupts in
kvm_arch_vcpu_runnable() and return to the guest. Until recently, this
work was done by kvm_arch_vcpu_{blocking,unblocking}(). Since commit
6109c5a6ab ("KVM: arm64: Move vGIC v4 handling for WFI out arch
callback hook"), these callbacks were gutted and superseded by
kvm_vcpu_wfi().

It is important to note that KVM implements PSCI CPU_SUSPEND calls as
a WFI within the guest. However, the implementation calls directly into
kvm_vcpu_halt(), which skips the needed work done in kvm_vcpu_wfi()
to detect pending interrupts. Fix the issue by calling the WFI helper.

Fixes: 6109c5a6ab ("KVM: arm64: Move vGIC v4 handling for WFI out arch callback hook")
Signed-off-by: Oliver Upton <oupton@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220217101242.3013716-1-oupton@google.com
2022-02-17 14:36:50 +00:00
David S. Miller
4d449bdc5b Merge branch 'ping6-SOL_IPV6'
Jakub Kicinski says:

====================
net: ping6: support setting basic SOL_IPV6 options via cmsg

Support for IPV6_HOPLIMIT, IPV6_TCLASS, IPV6_DONTFRAG on ICMPv6
sockets and associated tests. I have no immediate plans to
implement IPV6_FLOWINFO and all the extension header stuff.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-17 14:22:10 +00:00
Jakub Kicinski
a22982c39e selftests: net: basic test for IPV6_2292*
Add a basic test to make sure ping sockets don't crash
with IPV6_2292* options.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-17 14:22:09 +00:00
Jakub Kicinski
05ae83d5a4 selftests: net: test IPV6_HOPLIMIT
Test setting IPV6_HOPLIMIT via setsockopt and cmsg
across socket types.

Output without the kernel support (this series):

  Case HOPLIMIT ICMP cmsg - packet data returned 1, expected 0
  Case HOPLIMIT ICMP diff - packet data returned 1, expected 0

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-17 14:22:09 +00:00
Jakub Kicinski
9657ad09e1 selftests: net: test IPV6_TCLASS
Test setting IPV6_TCLASS via setsockopt and cmsg
across socket types.

Output without the kernel support (this series):

  Case TCLASS ICMP cmsg - packet data returned 1, expected 0
  Case TCLASS ICMP cmsg - rejection returned 0, expected 1
  Case TCLASS ICMP diff - pass returned 1, expected 0
  Case TCLASS ICMP diff - packet data returned 1, expected 0
  Case TCLASS ICMP diff - rejection returned 0, expected 1

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-17 14:22:09 +00:00
Jakub Kicinski
6f97c7c605 selftests: net: test IPV6_DONTFRAG
Test setting IPV6_DONTFRAG via setsockopt and cmsg
across socket types.

Output without the kernel support (this series):

    Case DONTFRAG ICMP setsock returned 0, expected 1
    Case DONTFRAG ICMP cmsg returned 0, expected 1
    Case DONTFRAG ICMP both returned 0, expected 1
    Case DONTFRAG ICMP diff returned 0, expected 1
  FAIL - 4/24 cases failed

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-17 14:22:09 +00:00
Jakub Kicinski
13651224c0 net: ping6: support setting basic SOL_IPV6 options via cmsg
Support setting IPV6_HOPLIMIT, IPV6_TCLASS, IPV6_DONTFRAG
during sendmsg via SOL_IPV6 cmsgs.

tclass and dontfrag are init'ed from struct ipv6_pinfo in
ipcm6_init_sk(), while hlimit is inited to -1, so we need
to handle it being populated via cmsg explicitly.

Leave extension headers and flowlabel unimplemented.
Those are slightly more laborious to test and users
seem to primarily care about IPV6_TCLASS.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-17 14:22:09 +00:00
Sameer Pujar
40efe139ff dt-bindings: Add Tegra234 APE support
Add clocks, power-domain and memory bindings to support APE subsystem
on Tegra234.

Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2022-02-17 15:21:43 +01:00
David S. Miller
d54f16c7fa Merge branch 'switchdev-BRENTRY'
Vladimir Oltean says:

====================
kRemove BRENTRY checks from switchdev drivers

As discussed here:
https://patchwork.kernel.org/project/netdevbpf/patch/20220214233111.1586715-2-vladimir.oltean@nxp.com/#24738869

no switchdev driver makes use of VLAN port objects that lack the
BRIDGE_VLAN_INFO_BRENTRY flag. Notifying them in the first place rather
seems like an omission of commit 9c86ce2c1a ("net: bridge: Notify
about bridge VLANs").

Since commit 3116ad0696 ("net: bridge: vlan: don't notify to switchdev
master VLANs without BRENTRY flag") that was just merged, the bridge no
longer notifies switchdev upon creation of these VLANs, so we can remove
the checks from drivers.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-17 14:17:10 +00:00
Vladimir Oltean
5edb65eac1 net: ti: cpsw: remove guards against !BRIDGE_VLAN_INFO_BRENTRY
Since commit 3116ad0696 ("net: bridge: vlan: don't notify to switchdev
master VLANs without BRENTRY flag"), the bridge no longer emits
switchdev notifiers for VLANs that don't have the
BRIDGE_VLAN_INFO_BRENTRY flag, so these checks are dead code.
Remove them.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-17 14:17:10 +00:00
Vladimir Oltean
1d21c32728 net: ti: am65-cpsw-nuss: remove guards against !BRIDGE_VLAN_INFO_BRENTRY
Since commit 3116ad0696 ("net: bridge: vlan: don't notify to switchdev
master VLANs without BRENTRY flag"), the bridge no longer emits
switchdev notifiers for VLANs that don't have the
BRIDGE_VLAN_INFO_BRENTRY flag, so these checks are dead code.
Remove them.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-17 14:17:10 +00:00
Vladimir Oltean
318994d3e2 net: sparx5: remove guards against !BRIDGE_VLAN_INFO_BRENTRY
Since commit 3116ad0696 ("net: bridge: vlan: don't notify to switchdev
master VLANs without BRENTRY flag"), the bridge no longer emits
switchdev notifiers for VLANs that don't have the
BRIDGE_VLAN_INFO_BRENTRY flag, so these checks are dead code.
Remove them.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-17 14:17:09 +00:00
Vladimir Oltean
ba43b54751 net: lan966x: remove guards against !BRIDGE_VLAN_INFO_BRENTRY
Since commit 3116ad0696 ("net: bridge: vlan: don't notify to switchdev
master VLANs without BRENTRY flag"), the bridge no longer emits
switchdev notifiers for VLANs that don't have the
BRIDGE_VLAN_INFO_BRENTRY flag, so these checks are dead code.
Remove them.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-17 14:17:09 +00:00