[PATCH v2 0/2] target/s390x: Make PRNO TRNG interruptible

[Ilya Leoshkevich <iii@linux.ibm.com>]

v1: https://lore.kernel.org/qemu-devel/20260714113946.275122-1-iii@linux.ibm.com/
v1 -> v2: Use cpu_loop_exit_requested() (Richard).
          Apply R-b, since the change is trivial enough.


Hi,

Christian has reported that one can make a TCG guest stuck by running
PRNO TRNG with a huge buffer. This series fixes this by making PRNO
TRNG end on cpu_loop_exit_requested().

Patch 1 is the fix, patch 2 is the test.

Cc: Harald, because this may conflict with the CPACF series.

Best regards,
Ilya


Ilya Leoshkevich (2):
  target/s390x: Make PRNO TRNG interruptible
  tests/tcg/s390x: Test PRNO TRNG interruptibility

 target/s390x/tcg/crypto_helper.c | 22 ++++++++---
 tests/tcg/s390x/Makefile.target  |  1 +
 tests/tcg/s390x/prno-trng.c      | 67 ++++++++++++++++++++++++++++++++
 3 files changed, 85 insertions(+), 5 deletions(-)
 create mode 100644 tests/tcg/s390x/prno-trng.c

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2.55.0