Re: [kvm-unit-tests PATCH v13 0/9] s390x: Testing the Channel Subsystem I/O

Janosch Frank
2020-07-21T13:12:04Z

[-- Attachment #1.1: Type: text/plain, Size: 3367 bytes --]

On 7/16/20 10:23 AM, Pierre Morel wrote:
> Hi All,
>
> This new respin of the series add modifications to
> - patch 9: s390x: css: ssch/tsch with sense and interrupt
> Other patches did not change.
>
> Recall:
>
> Goal of the series is to have a framework to test Channel-Subsystem I/O with
> QEMU/KVM.
>
> To be able to support interrupt for CSS I/O and for SCLP we need to modify
> the interrupt framework to allow re-entrant interruptions.
>
> We add a registration for IRQ callbacks to the test program to define its own
> interrupt handler. We need to do special work under interrupt like acknowledging
> the interrupt.
>
> This series presents three tests:
> - Enumeration:
> The CSS is enumerated using the STSCH instruction recursively on all
> potentially existing channels.
> Keeping the first channel found as a reference for future use.
> Checks STSCH
>
> - Enable:
> If the enumeration succeeded the tests enables the reference
> channel with MSCH and verifies with STSCH that the channel is
> effectively enabled, retrying a predefined count on failure
> to enable the channel
> Checks MSCH
>
> - Sense:
> If the channel is enabled this test sends a SENSE_ID command
> to the reference channel, analyzing the answer and expecting
> the Control unit type being 0x3832, a.k.a. virtio-ccw.
> Checks SSCH(READ) and IO-IRQ
>
> Note:
> - The following 5 patches are general usage and may be pulled first:
> s390x: saving regs for interrupts
> s390x: I/O interrupt registration
> s390x: export the clock get_clock_ms() utility
> s390x: clock and delays calculations
> s390x: define function to wait for interrupt
>
> - These 4 patches are really I/O oriented:
> s390x: Library resources for CSS tests
> s390x: css: stsch, enumeration test
> s390x: css: msch, enable test
> s390x: css: ssch/tsch with sense and interrupt
>
> Regards,
> Pierre

Thanks, picked

>
> Pierre Morel (9):
> s390x: saving regs for interrupts
> s390x: I/O interrupt registration
> s390x: export the clock get_clock_ms() utility
> s390x: clock and delays calculations
> s390x: define function to wait for interrupt
> s390x: Library resources for CSS tests
> s390x: css: stsch, enumeration test
> s390x: css: msch, enable test
> s390x: css: ssch/tsch with sense and interrupt
>
> lib/s390x/asm/arch_def.h | 14 ++
> lib/s390x/asm/time.h | 50 ++++++
> lib/s390x/css.h | 294 +++++++++++++++++++++++++++++++++++
> lib/s390x/css_dump.c | 152 ++++++++++++++++++
> lib/s390x/css_lib.c | 323 +++++++++++++++++++++++++++++++++++++++
> lib/s390x/interrupt.c | 23 ++-
> lib/s390x/interrupt.h | 8 +
> s390x/Makefile | 3 +
> s390x/css.c | 150 ++++++++++++++++++
> s390x/cstart64.S | 41 ++++-
> s390x/intercept.c | 11 +-
> s390x/unittests.cfg | 4 +
> 12 files changed, 1060 insertions(+), 13 deletions(-)
> create mode 100644 lib/s390x/asm/time.h
> create mode 100644 lib/s390x/css.h
> create mode 100644 lib/s390x/css_dump.c
> create mode 100644 lib/s390x/css_lib.c
> create mode 100644 lib/s390x/interrupt.h
> create mode 100644 s390x/css.c
>

[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 833 bytes --]