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932,869 commits

Author SHA1 Message Date
Russell King
4a84182afc dpaa2-eth: add support for mii ioctls
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:26:49 -08:00
Linus Torvalds
a2f0b878c3 Kbuild fixes for v5.6 (2nd)
- fix missed rebuild of DT schema check
 
  - add some phony targets to PHONY
 
  - fix comments and documents
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Merge tag 'kbuild-fixes-v5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - fix missed rebuild of DT schema check

 - add some phony targets to PHONY

 - fix comments and documents

* tag 'kbuild-fixes-v5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: get rid of trailing slash from subdir- example
  kbuild: add dt_binding_check to PHONY in a correct place
  kbuild: add dtbs_check to PHONY
  kbuild: remove unneeded semicolon at the end of cmd_dtb_check
  kbuild: fix DT binding schema rule to detect command line changes
  kbuild: remove wrong documentation about mandatory-y
  kbuild: add comment for V=2 mode
2020-02-27 11:26:33 -08:00
Russell King
c84786fa8f net: phy: marvell10g: read copper results from CSSR1
Read the copper autonegotiation results from the copper specific
status register, rather than decoding the advertisements. Reading
what the link is actually doing will allow us to support downshift
modes.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:21:33 -08:00
Russell King
b82cf17ff1 net: phy: marvell: don't interpret PHY status unless resolved
Don't attempt to interpret the PHY specific status register unless
the PHY is indicating that the resolution is valid.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:17:21 -08:00
Jiri Pirko
e387f7d5fc mlx5: register lag notifier for init network namespace only
The current code causes problems when the unregistering netdevice could
be different then the registering one.

Since the check in mlx5_lag_netdev_event() does not allow any other
network namespace anyway, fix this by registerting the lag notifier
per init network namespace only.

Fixes: d48834f9d4 ("mlx5: Use dev_net netdevice notifier registrations")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Tested-by: Aya Levin <ayal@mellanox.com>
Acked-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:16:14 -08:00
David S. Miller
be64e397c7 Merge branch 's390-qeth-next'
Julian Wiedmann says:

====================
s390/qeth: updates 2020-02-27

please apply the following patch series for qeth to netdev's net-next
tree.

This adds support for ETHTOOL_RX_COPYBREAK, along with small cleanups
and fine-tuning.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:15:13 -08:00
Julian Wiedmann
562cf77363 s390/qeth: support configurable RX copybreak
Implement the ethtool hooks for the ETHTOOL_RX_COPYBREAK tunable.

The copybreak is stored into netdev_priv, so that we automatically go
back to the default value if the netdev is re-allocated.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:15:13 -08:00
Julian Wiedmann
3d35dbe622 s390/qeth: don't check for IFF_UP when scheduling napi
Trust the napi_disable() in qeth_stop() to handle this.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:15:13 -08:00
Julian Wiedmann
3a5bad64db s390/qeth: don't re-start read cmd when IDX has terminated
Once the IDX connection is down, there's no point in trying to issue
more IOs.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:15:13 -08:00
Julian Wiedmann
7f23d55f49 s390/qeth: reset seqnos on connection startup
This let's us start every new IDX connection with clean seqnos.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:15:13 -08:00
Julian Wiedmann
d74e5e84f2 s390/qeth: remove unused cmd definitions
Looks like these were never used, ever since the driver was initially
added.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:15:12 -08:00
Julian Wiedmann
13bf829581 s390/qeth: validate device-provided MAC address
It's good practice to not blindly trust what the HW offers.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:15:12 -08:00
Julian Wiedmann
9c6dc7af85 s390/qeth: clean up CREATE_ADDR cmd code
Properly define the cmd's struct to get rid of some casts and accesses
at magic offsets.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:15:12 -08:00
Julian Wiedmann
6bbfece5a4 s390/qeth: remove dead code in qeth_l3_iqd_read_initial_mac()
card->info.unique_id is always 0 for IQD devices, so don't bother with
copying it into the 0-initialized cmd.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:15:12 -08:00
Ville Syrjälä
041be4811f drm/i915: Set up PIPE_MISC truncate bit on tgl+
Looks like the pipe rounding mode bit has moved from PIPE_CHICKEN to
PIPE_MISC on tgl. Frob the new location.

Bspec does still document the old bits as well, so I left the code
for them as is until we get clarification from the hw folks on
whether the old bits still do something useful.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200226163054.9509-1-ville.syrjala@linux.intel.com
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
2020-02-27 21:14:33 +02:00
Linus Torvalds
278de45e14 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID subsystem fixes from Jiri Kosina:

 - syzkaller-reported error handling fixes in various drivers, from
   various people

 - increase of HID report buffer size to 8K, which is apparently needed
   by certain modern devices

 - a few new device-ID-specific fixes / quirks

 - battery charging status reporting fix in logitech-hidpp, from Filipe
   Laíns

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
  HID: hid-bigbenff: fix race condition for scheduled work during removal
  HID: hid-bigbenff: call hid_hw_stop() in case of error
  HID: hid-bigbenff: fix general protection fault caused by double kfree
  HID: i2c-hid: add Trekstor Surfbook E11B to descriptor override
  HID: alps: Fix an error handling path in 'alps_input_configured()'
  HID: hiddev: Fix race in in hiddev_disconnect()
  HID: core: increase HID report buffer size to 8KiB
  HID: core: fix off-by-one memset in hid_report_raw_event()
  HID: apple: Add support for recent firmware on Magic Keyboards
  HID: ite: Only bind to keyboard USB interface on Acer SW5-012 keyboard dock
  HID: logitech-hidpp: BatteryVoltage: only read chargeStatus if extPower is active
2020-02-27 11:13:27 -08:00
Tobias Klauser
3a12500ed5 unix: define and set show_fdinfo only if procfs is enabled
Follow the pattern used with other *_show_fdinfo functions and only
define unix_show_fdinfo and set it in proto_ops if CONFIG_PROCFS
is set.

Fixes: 3c32da19a8 ("unix: Show number of pending scm files of receive queue in fdinfo")
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Reviewed-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:11:57 -08:00
David S. Miller
22339f2f30 Merge branch 'selftests-updates-for-mlxsw-driver-test'
Jiri Pirko says:

====================
selftests: updates for mlxsw driver test

This patchset contains tweaks to the existing tests and is also adding
couple of new ones, namely tests for shared buffer and red offload.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:10:15 -08:00
Amit Cohen
3eba413713 selftests: mlxsw: resource_scale: Invoke for Spectrum-3
The scale test for Spectrum-2 should be invoked for Spectrum-2 and
Spectrum-3. Add the appropriate device ID.

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:10:15 -08:00
Danielle Ratson
e781eedae2 selftests: mlxsw: Reduce router scale running time using offload indication
Currently, the test inserts X /32 routes and for each route it is
testing that a packet sent from the first host is received by the second
host, which is very time-consuming.

Instead only validate the offload flag of each route and get the same result.

Wait between the creation of the routes and the offload validation in
order to make sure that all the routes were successfully offloaded.

Signed-off-by: Danielle Ratson <danieller@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:10:15 -08:00
Danielle Ratson
abfce9e062 selftests: mlxsw: Reduce running time using offload indication
After adding a given number of flower rules for different IPv6
addresses, the test generates traffic and ensures that each packet is
received, which is time-consuming.

Instead, test the offload indication of the tc flower rules and reduce
the running time by half.

Signed-off-by: Danielle Ratson <danieller@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:10:15 -08:00
Shalom Toledo
a865ad9996 selftests: mlxsw: Add shared buffer traffic test
Test the max shared buffer occupancy for port's pool and port's TC's (using
different types of packets).

Signed-off-by: Shalom Toledo <shalomt@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:10:15 -08:00
Shalom Toledo
4240dbd8f3 selftests: mlxsw: Add mlxsw lib
Add mlxsw lib for common defines, helpers etc.

Signed-off-by: Shalom Toledo <shalomt@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:10:15 -08:00
Shalom Toledo
9fb74734f4 selftests: devlink_lib: Add devlink port helpers
Add two devlink port helpers:
 * devlink port get by netdev
 * devlink cpu port get

Signed-off-by: Shalom Toledo <shalomt@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:10:15 -08:00
Shalom Toledo
552ec3d9d2 selftests: devlink_lib: Check devlink info command is supported
Sanity check for devlink info command.

Signed-off-by: Shalom Toledo <shalomt@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:10:15 -08:00
Shalom Toledo
6697b51ed3 selftests: mlxsw: Add shared buffer configuration test
Test physical ports' shared buffer configuration options using random
values related to a specific configuration option. There are 3
configuration options: pool, TC bind and portpool.

Each sub-test, test a different configuration option and random the related
values as the follow:
 * For pools, pool's size will be randomized.
 * For TC bind, pool number and threshold will be randomized.
 * For portpools, threshold will be randomized.

Signed-off-by: Shalom Toledo <shalomt@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:10:14 -08:00
Danielle Ratson
1cbe65e09b selftests: mlxsw: Use busywait helper in rtnetlink test
Rtnetlink test uses offload indication checks.

Use a busywait helper and wait until the offload indication is set or
fail if it reaches timeout.

Signed-off-by: Danielle Ratson <danieller@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:10:14 -08:00
Danielle Ratson
05ef614c55 selftests: mlxsw: Use busywait helper in vxlan test
Vxlan test uses offload indication checks.

Use a busywait helper and wait until the offload indication is set or
fail if it reaches timeout.

Signed-off-by: Danielle Ratson <danieller@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:10:14 -08:00
Danielle Ratson
0c22f993c9 selftests: mlxsw: Use busywait helper in blackhole routes test
Blackhole routes test uses offload indication checks.

Use busywait helper and wait until the routes offload indication is set or
fail if it reaches timeout.

Signed-off-by: Danielle Ratson <danieller@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:10:14 -08:00
Ido Schimmel
5d66773f41 selftests: devlink_trap_l3_drops: Avoid race condition
The test checks that packets are trapped when they should egress a
router interface (RIF) that has become disabled. This is a temporary
state in a RIF's deletion sequence.

Currently, the test deletes the RIF by flushing all the IP addresses
configured on the associated netdev (br0). However, this is racy, as
this also flushes all the routes pointing to the netdev and if the
routes are deleted from the device before the RIF is disabled, then no
packets will try to egress the disabled RIF and the trap will not be
triggered.

Instead, trigger the deletion of the RIF by unlinking the mlxsw port
from the bridge that is backing the RIF. Unlike before, this will not
cause the kernel to delete the routes pointing to the bridge.

Note that due to current mlxsw locking scheme the RIF is always deleted
first, but this is going to change.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:10:14 -08:00
Jiri Pirko
ab2b8ab253 selftests: add a mirror test to mlxsw tc flower restrictions
Include test of forbidding to have multiple mirror actions.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:10:14 -08:00
Jiri Pirko
c84e903f62 selftests: add egress redirect test to mlxsw tc flower restrictions
Include test of forbidding to have redirect rule on egress-bound block.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:10:14 -08:00
Petr Machata
3de611b507 selftests: mlxsw: Add a RED selftest
This tests that below the queue minimum length, there is no dropping /
marking, and above max, everything is dropped / marked.

The test is structured as a core file with topology and test code, and
three wrappers: one for RED used as a root Qdisc, and two for
testing (W)RED under PRIO and ETS.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:10:14 -08:00
Petr Machata
4113b04823 selftests: forwarding: lib.sh: Add start_tcp_traffic
Extract a helper __start_traffic() configurable by protocol type. Allow
passing through extra mausezahn arguments. Add a wrapper,
start_tcp_traffic().

Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:10:14 -08:00
David S. Miller
f4979b41f3 Merge branch 'hinic-BugFixes'
Luo bin says:

====================
hinic: BugFixes

the bug fixed in patch #2 has been present since the first commit.
the bugs fixed in patch #1 and patch #3 have been present since the
following commits:
patch #1: 352f58b0d9 ("net-next/hinic: Set Rxq irq to specific cpu for NUMA")
patch #3: 421e952628 ("hinic: add rss support")
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:08:01 -08:00
Luo bin
386d4716fd hinic: fix a bug of rss configuration
should use real receive queue number to configure hw rss
indirect table rather than maximal queue number

Signed-off-by: Luo bin <luobin9@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:08:01 -08:00
Luo bin
d2ed69ce9e hinic: fix a bug of setting hw_ioctxt
a reserved field is used to signify prime physical function index
in the latest firmware version, so we must assign a value to it
correctly

Signed-off-by: Luo bin <luobin9@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:08:01 -08:00
Luo bin
0bff777bd0 hinic: fix a irq affinity bug
can not use a local variable as an input parameter of
irq_set_affinity_hint

Signed-off-by: Luo bin <luobin9@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-27 11:08:01 -08:00
Linus Torvalds
e46bfaba59 A pair of docs-build fixes.
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Merge tag 'docs-5.6-fixes' of git://git.lwn.net/linux

Pull documentation fixes from Jonathan Corbet:
 "A pair of docs-build fixes"

* tag 'docs-5.6-fixes' of git://git.lwn.net/linux:
  docs: Fix empty parallelism argument
  docs: remove MPX from the x86 toc
2020-02-27 11:07:13 -08:00
Linus Torvalds
ed5fa55918 audit/stable-5.6 PR 20200226
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Merge tag 'audit-pr-20200226' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit

Pull audit fixes from Paul Moore:
 "Two fixes for problems found by syzbot:

   - Moving audit filter structure fields into a union caused some
     problems in the code which populates that filter structure.

     We keep the union (that idea is a good one), but we are fixing the
     code so that it doesn't needlessly set fields in the union and mess
     up the error handling.

   - The audit_receive_msg() function wasn't validating user input as
     well as it should in all cases, we add the necessary checks"

* tag 'audit-pr-20200226' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
  audit: always check the netlink payload length in audit_receive_msg()
  audit: fix error handling in audit_data_to_entry()
2020-02-27 11:01:22 -08:00
Michael Mueller
cc674ef252 KVM: s390: introduce module parameter kvm.use_gisa
The boolean module parameter "kvm.use_gisa" controls if newly
created guests will use the GISA facility if provided by the
host system. The default is yes.

  # cat /sys/module/kvm/parameters/use_gisa
  Y

The parameter can be changed on the fly.

  # echo N > /sys/module/kvm/parameters/use_gisa

Already running guests are not affected by this change.

The kvm s390 debug feature shows if a guest is running with GISA.

  # grep gisa /sys/kernel/debug/s390dbf/kvm-$pid/sprintf
  00 01582725059:843303 3 - 08 00000000e119bc01  gisa 0x00000000c9ac2642 initialized
  00 01582725059:903840 3 - 11 000000004391ee22  00[0000000000000000-0000000000000000]: AIV gisa format-1 enabled for cpu 000
  ...
  00 01582725059:916847 3 - 08 0000000094fff572  gisa 0x00000000c9ac2642 cleared

In general, that value should not be changed as the GISA facility
enhances interruption delivery performance.

A reason to switch the GISA facility off might be a performance
comparison run or debugging.

Signed-off-by: Michael Mueller <mimu@linux.ibm.com>
Link: https://lore.kernel.org/r/20200227091031.102993-1-mimu@linux.ibm.com
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2020-02-27 19:47:13 +01:00
Janosch Frank
04ed89dc4a KVM: s390: protvirt: Add KVM api documentation
Add documentation for KVM_CAP_S390_PROTECTED capability and the
KVM_S390_PV_COMMAND ioctl.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
[borntraeger@de.ibm.com: patch merging, splitting, fixing]
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2020-02-27 19:47:13 +01:00
Christian Borntraeger
13da9ae1cd KVM: s390: protvirt: introduce and enable KVM_CAP_S390_PROTECTED
Now that everything is in place, we can announce the feature.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
2020-02-27 19:47:13 +01:00
Janosch Frank
a421027987 DOCUMENTATION: Protected virtual machine introduction and IPL
Add documentation about protected KVM guests and description of changes
that are necessary to move a KVM VM into Protected Virtualization mode.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
[borntraeger@de.ibm.com: fixing and conversion to rst]
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2020-02-27 19:47:12 +01:00
Janosch Frank
8a8378fa61 KVM: s390: protvirt: Add UV cpu reset calls
For protected VMs, the VCPU resets are done by the Ultravisor, as KVM
has no access to the VCPU registers.

Note that the ultravisor will only accept a call for the exact reset
that has been requested.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
[borntraeger@de.ibm.com: patch merging, splitting, fixing]
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2020-02-27 19:47:12 +01:00
Christian Borntraeger
72f218208f KVM: s390: protvirt: do not inject interrupts after start
As PSW restart is handled by the ultravisor (and we only get a start
notification) we must re-check the PSW after a start before injecting
interrupts.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
2020-02-27 19:47:12 +01:00
Janosch Frank
3adae0b4ca KVM: s390: protvirt: Mask PSW interrupt bits for interception 104 and 112
We're not allowed to inject interrupts on intercepts that leave the
guest state in an "in-between" state where the next SIE entry will do a
continuation, namely secure instruction interception (104) and secure
prefix interception (112).
As our PSW is just a copy of the real one that will be replaced on the
next exit, we can mask out the interrupt bits in the PSW to make sure
that we do not inject anything.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
[borntraeger@de.ibm.com: patch merging, splitting, fixing]
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2020-02-27 19:47:12 +01:00
Janosch Frank
7c36a3fcf4 KVM: s390: protvirt: Support cmd 5 operation state
Code 5 for the set cpu state UV call tells the UV to load a PSW from
the SE header (first IPL) or from guest location 0x0 (diag 308 subcode
0/1). Also it sets the cpu into operating state afterwards, so we can
start it.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
[borntraeger@de.ibm.com: patch merging, splitting, fixing]
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2020-02-27 19:47:12 +01:00
Janosch Frank
fe28c7868f KVM: s390: protvirt: Report CPU state to Ultravisor
VCPU states have to be reported to the ultravisor for SIGP
interpretation, kdump, kexec and reboot.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
[borntraeger@de.ibm.com: patch merging, splitting, fixing]
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2020-02-27 19:47:12 +01:00
Janosch Frank
e0d2773d48 KVM: s390: protvirt: UV calls in support of diag308 0, 1
diag 308 subcode 0 and 1 require several KVM and Ultravisor interactions.
Specific to these "soft" reboots are

* The "unshare all" UVC
* The "prepare for reset" UVC

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
[borntraeger@de.ibm.com: patch merging, splitting, fixing]
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2020-02-27 19:47:12 +01:00