Merge branch 's390x-next-2022-06' into 'master'

s390x: some migration tests and gcc12 support

See merge request kvm-unit-tests/kvm-unit-tests!33

s390x: Introduce symbol for lowcore and use it

This gets rid of bunch of pointers pointing to the lowcore used in
various places and replaces it with a unified way of addressing the
lowcore.
The new

s390x: Introduce symbol for lowcore and use it

This gets rid of bunch of pointers pointing to the lowcore used in
various places and replaces it with a unified way of addressing the
lowcore.
The new symbol is not a pointer. While this will lead to worse code
generation (cannot use register 0 for addressing), that should not
matter too much for kvm unit tests.
Since the lowcore is located per definition at address 0, the symbol is
defined via the linker scripts.
The symbol also will be used to create pointers that the compiler cannot
warn about as being outside the bounds of an array.

Signed-off-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20220608122953.1051952-2-scgl@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>

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Merge branch 's390x-next-2022-05' into 'master'

storage keys, attestation, migration tests

See merge request kvm-unit-tests/kvm-unit-tests!30

s390x: css: Cleanup includes

Most includes were related to allocation but that's done in the io
allocation library so having them in the test doesn't make sense.

Signed-off-by: Janosch Frank <frank

s390x: css: Cleanup includes

Most includes were related to allocation but that's done in the io
allocation library so having them in the test doesn't make sense.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>

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s390x: css: Skip if we're not run by qemu

There's no guarantee that we even find a device at the address we're
testing for if we're not running under QEMU.

Signed-off-by: Janosch Frank <frankja@lin

s390x: css: Skip if we're not run by qemu

There's no guarantee that we even find a device at the address we're
testing for if we're not running under QEMU.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Nico Boehr <nrb@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>

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Merge branch 's390x-next-2022-04' from imbrenda into 'master'

s390x: smp, vm lib updates; I/O and smp tests

See merge request kvm-unit-tests/kvm-unit-tests!29

s390x: Add tests for TSCH

TSCH has two special cases which need to be tested:

- unaligned address. We test for misalignment by 1 and 2 bytes.
- channel not operational
- bit 47 in SID not set

Sign

s390x: Add tests for TSCH

TSCH has two special cases which need to be tested:

- unaligned address. We test for misalignment by 1 and 2 bytes.
- channel not operational
- bit 47 in SID not set

Signed-off-by: Nico Boehr <nrb@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>

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s390x: Add more tests for STSCH

css_lib extensively uses STSCH, but two more cases deserve their own
tests:

- unaligned address for SCHIB. We check for misalignment by 1 and 2
bytes.
- channel no

s390x: Add more tests for STSCH

css_lib extensively uses STSCH, but two more cases deserve their own
tests:

- unaligned address for SCHIB. We check for misalignment by 1 and 2
bytes.
- channel not operational
- bit 47 in SID not set
- bit 5 of PMCW flags.
As per the principles of operation, bit 5 of the PMCW flags shall be
ignored by msch and always stored as zero by stsch.

Older QEMU versions require this bit to always be zero on msch,
which is why this test may fail. A fix is available in QEMU master
commit 2df59b73e086 ("s390x/css: fix PMCW invalid mask").

Here's the QEMU PMCW invalid mask fix: https://lists.nongnu.org/archive/html/qemu-s390x/2021-12/msg00100.html

Signed-off-by: Nico Boehr <nrb@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Acked-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>

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s390x: Add more tests for SSCH

We already have some coverage of SSCH due to its use in
start_ccw1_chain() in css_lib, but two more cases deserve our
attention:

- unaligned operand address. We check

s390x: Add more tests for SSCH

We already have some coverage of SSCH due to its use in
start_ccw1_chain() in css_lib, but two more cases deserve our
attention:

- unaligned operand address. We check for misalignment by 1 and 2 bytes.
- an invalid ORB structure.

Signed-off-by: Nico Boehr <nrb@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>

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s390x: Add tests for STCRW

The test consists of two parts: First a simple check to ensure we
enforce an aligned address. We test misalignment by 1 and 2 bytes.

The second part tests the handling of

s390x: Add tests for STCRW

The test consists of two parts: First a simple check to ensure we
enforce an aligned address. We test misalignment by 1 and 2 bytes.

The second part tests the handling of pending Channel Reports (CR). We
first assume no CR is initally pending and check STCRW returns
accordingly. Then, we generate a CR by resetting a Channel Path using
RCHP and make sure this results in exactly one CRW being generated which
has a Reporting-Source Code (RSC) corresponding to the Channel Path
facility.

Signed-off-by: Nico Boehr <nrb@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>

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s390x: Add more tests for MSCH

We already have some coverage for MSCH, but there are more cases to test
for:

- invalid SCHIB structure. We cover that by setting reserved bits 0, 1,
6 and 7 in the

s390x: Add more tests for MSCH

We already have some coverage for MSCH, but there are more cases to test
for:

- invalid SCHIB structure. We cover that by setting reserved bits 0, 1,
6 and 7 in the flags of the PMCW.
Older QEMU versions require this bit to always be zero on msch,
which is why this test may fail. A fix is available in QEMU master
commit 2df59b73e086 ("s390x/css: fix PMCW invalid mask").
- a pointer to an unaligned SCHIB. We cover misalignment by 1
and 2 bytes. Using pointer to valid memory avoids messing up
random memory in case of test failures.

Here's the QEMU PMCW invalid mask fix: https://lists.nongnu.org/archive/html/qemu-s390x/2021-12/msg00100.html

Signed-off-by: Nico Boehr <nrb@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>

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Use report_pass(...) instead of report(1/true, ...)

Whitespace is kept consistent with the rest of the file.

Signed-off-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Reviewed-by: Thomas Huth <t

Use report_pass(...) instead of report(1/true, ...)

Whitespace is kept consistent with the rest of the file.

Signed-off-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20211005090921.1816373-6-scgl@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

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Use report_fail(...) instead of report(0/false, ...)

Whitespace is kept consistent with the rest of the file.

Signed-off-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Reviewed-by: Thomas Huth <

Use report_fail(...) instead of report(0/false, ...)

Whitespace is kept consistent with the rest of the file.

Signed-off-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Message-Id: <20211005090921.1816373-5-scgl@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

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s390x: css: testing measurement block format 1

Measurement block format 1 is made available by the extended
measurement block facility and is indicated in the SCHIB by
the bit in the PMCW.

The MBO

s390x: css: testing measurement block format 1

Measurement block format 1 is made available by the extended
measurement block facility and is indicated in the SCHIB by
the bit in the PMCW.

The MBO is specified in the SCHIB of each channel and the MBO
defined by the SCHM instruction is ignored.

The test of the MB format 1 is just skipped if the feature is
not available.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Link: https://lore.kernel.org/kvm/1615545714-13747-7-git-send-email-pmorel@linux.ibm.com/
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>

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s390x: css: testing measurement block format 0

We test the update of the measurement block format 0, the
measurement block origin is calculated from the mbo argument
used by the SCHM instruction and

s390x: css: testing measurement block format 0

We test the update of the measurement block format 0, the
measurement block origin is calculated from the mbo argument
used by the SCHM instruction and the offset calculated using
the measurement block index of the SCHIB.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Acked-by: Janosch Frank <frankja@linux.ibm.com>
Link: https://lore.kernel.org/kvm/1615545714-13747-6-git-send-email-pmorel@linux.ibm.com/
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>

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s390x: css: implementing Set CHannel Monitor

We implement the call of the Set CHannel Monitor instruction,
starting the monitoring of the all Channel Sub System, and
initializing channel subsystem m

s390x: css: implementing Set CHannel Monitor

We implement the call of the Set CHannel Monitor instruction,
starting the monitoring of the all Channel Sub System, and
initializing channel subsystem monitoring.

Initial tests report the presence of the extended measurement block
feature, and verify the error reporting of the hypervisor for SCHM.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Acked-by: Janosch Frank <frankja@linux.ibm.com>
Link: https://lore.kernel.org/kvm/1615545714-13747-5-git-send-email-pmorel@linux.ibm.com/
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>

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s390x: css: simplifications of the tests

In order to ease the writing of tests based on:
- interrupt
- enabling a subchannel
- using multiple I/O on a channel without disabling it

We do the followi

s390x: css: simplifications of the tests

In order to ease the writing of tests based on:
- interrupt
- enabling a subchannel
- using multiple I/O on a channel without disabling it

We do the following simplifications:
- the I/O interrupt handler is registered on CSS initialization
- We do not enable again a subchannel in senseid if it is already
enabled
- we add a css_enabled() function to test if a subchannel is enabled

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Acked-by: Janosch Frank <frankja@linux.ibm.com>
Link: https://lore.kernel.org/kvm/1615545714-13747-3-git-send-email-pmorel@linux.ibm.com/
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>

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s390x: css: Store CSS Characteristics

CSS characteristics exposes the features of the Channel SubSystem.
Let's use Store Channel Subsystem Characteristics to retrieve
the features of the CSS.

Signe

s390x: css: Store CSS Characteristics

CSS characteristics exposes the features of the Channel SubSystem.
Let's use Store Channel Subsystem Characteristics to retrieve
the features of the CSS.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Acked-by: Janosch Frank <frankja@linux.ibm.com>
Link: https://lore.kernel.org/kvm/1615545714-13747-2-git-send-email-pmorel@linux.ibm.com/
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>

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Merge branch 's390x-pull-2021-08-03' of https://gitlab.com/frankja/kvm-unit-tests.git into 'master'

* IO tests PV compatibility (Pierre)
* Backtrace support (Janosch)
* mvpg test (Claudio)
* Fixups

Merge branch 's390x-pull-2021-08-03' of https://gitlab.com/frankja/kvm-unit-tests.git into 'master'

* IO tests PV compatibility (Pierre)
* Backtrace support (Janosch)
* mvpg test (Claudio)
* Fixups (Thomas)

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s390x: css: pv: css test adaptation for PV

We want the tests to automatically work with or without protected
virtualisation.
To do this we need to share the I/O memory with the host.

Let's replace

s390x: css: pv: css test adaptation for PV

We want the tests to automatically work with or without protected
virtualisation.
To do this we need to share the I/O memory with the host.

Let's replace all static allocations with dynamic allocations
to clearly separate shared and private memory.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Acked-by: Janosch Frank <frankja@de.ibm.com>
Message-Id: <1611322060-1972-4-git-send-email-pmorel@linux.ibm.com>
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>

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Merge tag 's390x-2021-20-01' of https://gitlab.com/frankja/kvm-unit-tests into HEAD

* Moved to SPDX license identifiers and cleaning up license
* Added test_bit(_inv)() & SCLP feature bit checking
*

Merge tag 's390x-2021-20-01' of https://gitlab.com/frankja/kvm-unit-tests into HEAD

* Moved to SPDX license identifiers and cleaning up license
* Added test_bit(_inv)() & SCLP feature bit checking
* Added first SIE lib and test for nesting tests
* Added diag318 emulation test
* Small UV fix

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s390x: Move to GPL 2 and SPDX license identifiers

In the past we had some issues when developers wanted to use code
snippets or constants from the kernel in a test or in the library. To
remedy that

s390x: Move to GPL 2 and SPDX license identifiers

In the past we had some issues when developers wanted to use code
snippets or constants from the kernel in a test or in the library. To
remedy that the s390x maintainers decided to move all files to GPL
2 (if possible).

At the same time let's move to SPDX identifiers as they are much nicer
to read.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Pierre Morel <pmorel@linux.ibm.com>

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Merge tag 's390x-2020-31-07' of https://github.com/frankjaa/kvm-unit-tests into HEAD

* IO tests from Pierre
* GCC 10 compile fix from Claudio
* CPU model test fix from Thomas

Merge tag 's390x-2020-31-07' of https://github.com/frankjaa/kvm-unit-tests

* IO tests from Pierre
* GCC 10 compile fix from Claudio
* CPU model test fix from Thomas

s390x: css: ssch/tsch with sense and interrupt

After a channel is enabled we start a SENSE_ID command using
the SSCH instruction to recognize the control unit and device.

This tests the success of

s390x: css: ssch/tsch with sense and interrupt

After a channel is enabled we start a SENSE_ID command using
the SSCH instruction to recognize the control unit and device.

This tests the success of SSCH, the I/O interruption and the TSCH
instructions.

The SENSE_ID command response is tested to report 0xff inside
its reserved field and to report the same control unit type
as the cu_type kernel argument.

Without the cu_type kernel argument, the test expects a device
with a default control unit type of 0x3832, a.k.a virtio-net-ccw.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <1594904645-32499-1-git-send-email-pmorel@linux.ibm.com>
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>

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