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[ATfE] PAC-RET hardening against the PACMAN attack#729

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vhscampos wants to merge 1 commit intoarm:arm-softwarefrom
vhscampos:harden-pac-ret-downstream-patch
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[ATfE] PAC-RET hardening against the PACMAN attack#729
vhscampos wants to merge 1 commit intoarm:arm-softwarefrom
vhscampos:harden-pac-ret-downstream-patch

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@vhscampos
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Downstream issue:#726

The changes are still in upstream review, but we need the changes now for the Arm Toolchain for Embedded 22 release.

They include a new command-line option and a new function attribute. Their naming is still up for debate in the upstream review, therefore it can change in future versions of the toolchain.

List of upstream PRs:

Downstream issue:arm#726

The changes are still in upstream review, but we need the changes now
for the Arm Toolchain for Embedded 22 release.

They include a new command-line option and a new function attribute.
Their naming is still up for debate in the upstream review, therefore it
can change in future versions of the toolchain.

List of upstream PRs:
 - llvm/llvm-project#175991
 - llvm/llvm-project#176171
 - llvm/llvm-project#176187
@vhscampos vhscampos requested review from a team as code owners February 20, 2026 13:02
@github-actions github-actions bot added the downstream-change Downstream change to LLVM tree label Feb 20, 2026
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This pull review modifies files outside of the arm-software directory, so please ensure it follows the Downstream Patch Policy.
An automated check will test if the tagging requirements have been met. Please wait for approving reviews from both Arm Toolchain for Embedded and Arm Toolchain for Linux teams before merging.

@vhscampos vhscampos closed this Feb 20, 2026
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Closed in order to open a PR directly onto the 22 branch

@vhscampos vhscampos deleted the harden-pac-ret-downstream-patch branch February 20, 2026 13:59
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