Merge tag 'pr-plugins-20260212' of https://gitlab.com/pbo-linaro/qemu into staging

Changes:
- contrib/plugins/uftrace: add riscv64 support (Pierrick Bouvier <pierrick.bouvier@linaro.org>)

# -----BEGIN PGP SIGNATURE-----
#
# iQGzBAABCgAdFiEEZrmU7KFPfy5auggff5BUDQoc0A8FAmmOc4AACgkQf5BUDQoc
# 0A89QAv/TgRSGaiYfOziVTAephxNlzCJTsiHOKETTaGnKUbWTe6eNGVCsNtsnXuk
# CETe/5vc5WAF3QYml2NJVl8YqmMOw6YbbCDJgVosmRvGTaYhi6Ner5se9cD2Io1Z
# FzOXgzLO9dXr24OQ404Gjlndos5EBp82LTA/wmh84Ucgzez7193gTKTBjd729Feb
# 5cz320yz9UkFhpTciZHK6X59Y2V5xp+ecJVlYORzzHSjI0Vpi2eDiF2suAAonIB9
# n+Ch/TCkt7ZSicX+IA2tp5hNMbF4PzVYr2fEDu005LHomN/TmwDrVBrWhat49Fkp
# iZ144Riy1LcpenZY50f4kr5vnFM40QG0w/DxemBrdHUQ91RvM//wrKG9QCYXe7hp
# SJJRwcZLZP7m6T9zvRSJIieX4I9ZgWRR3KvAqaX7Hd5H0k+thC4UgQ7rlwnoLJpA
# KPU/bgiZhsTEIWHoeOtqgdMTgK9k9FMR+t9u04J25bHXFcMUh7JpV96n/gFvBOPR
# n4POwZ+j
# =3a3y
# -----END PGP SIGNATURE-----
# gpg: Signature made Fri Feb 13 00:42:40 2026 GMT
# gpg:                using RSA key 66B994ECA14F7F2E5ABA081F7F90540D0A1CD00F
# gpg: Good signature from "Pierrick Bouvier <pierrick.bouvier@linaro.org>" [undefined]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 66B9 94EC A14F 7F2E 5ABA  081F 7F90 540D 0A1C D00F

* tag 'pr-plugins-20260212' of https://gitlab.com/pbo-linaro/qemu:
  contrib/plugins/uftrace: add riscv64 support
  docs/about/emulation/uftrace: add info about automatic tracing
  contrib/plugins/uftrace: add ops for walking frame pointers chain
  contrib/plugins/uftrace: fix infinite stack unwind detection

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>