* Implement FEAT_GCS
* Implement FEAT_MEC
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Merge tag 'pull-target-arm-20251010' of https://gitlab.com/pm215/qemu into staging
target-arm queue:
* Implement FEAT_GCS
* Implement FEAT_MEC
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# gpg: Signature made Fri 10 Oct 2025 06:04:32 AM PDT
# gpg: using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg: issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [unknown]
# gpg: aka "Peter Maydell <pmaydell@gmail.com>" [unknown]
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [unknown]
# gpg: aka "Peter Maydell <peter@archaic.org.uk>" [unknown]
# gpg: WARNING: The key's User ID is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE
* tag 'pull-target-arm-20251010' of https://gitlab.com/pm215/qemu: (76 commits)
target/arm: Enable FEAT_MEC in -cpu max
target/arm: Implement FEAT_MEC registers
target/arm: Add a cpreg flag to indicate no trap in NV
tests/tcg/aarch64: Add gcsss
tests/tcg/aarch64: Add gcspushm
tests/tcg/aarch64: Add gcsstr
linux-user/aarch64: Enable GCS in HWCAP
linux-user/aarch64: Generate GCS signal records
linux-user/aarch64: Inject SIGSEGV for GCS faults
target/arm: Enable GCSPR_EL0 for read in user-mode
linux-user/aarch64: Implement map_shadow_stack syscall
linux-user/aarch64: Release gcs stack on thread exit
linux-user/aarch64: Allocate new gcs stack on clone
linux-user/aarch64: Implement prctls for GCS
target/arm: Enable FEAT_GCS with -cpu max
target/arm: Implement EXLOCK check during exception return
target/arm: Copy EXLOCKEn to EXLOCK on exception to the same EL
target/arm: Load gcs record for RET with PAuth
target/arm: Load gcs record for RET
target/arm: Add gcs record for BLR with PAuth
...
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
f3f2ad1193