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| author | Yury Khrustalev <yury.khrustalev@arm.com> | 2025-01-21 13:44:05 +0000 |
|---|---|---|
| committer | Andreas K. Hüttel <dilfridge@gentoo.org> | 2025-01-21 21:34:03 +0100 |
| commit | d4626340b997d662ddca4a48f8a3bf03ccb7a603 (patch) | |
| tree | 9c9c6eda519d3ec86432fc3ccdae784ce59f4454 | |
| parent | c6b6a8cf0498f07dc44cda9322b6dada0118d6f3 (diff) | |
| download | glibc-d4626340b997d662ddca4a48f8a3bf03ccb7a603.tar.xz glibc-d4626340b997d662ddca4a48f8a3bf03ccb7a603.zip | |
NEWS: Add note on Guarded Control Stack support
Reviewed-by: Andreas K. Huettel <dilfridge@gentoo.org>
| -rw-r--r-- | NEWS | 10 |
1 files changed, 10 insertions, 0 deletions
@@ -74,6 +74,16 @@ Major new features: which currently include 'node_id' and 'mm_cid' and will also allow exposing new features as they get added to future Linux kernels. +* The GNU C Library now supports Guarded Control Stack extension that allows + to use shadow stacks on AArch64 systems that support this extension. + Building the library with standard branch protection enabled while using + a toolchain that supports GCS (binutils 2.44 and GCC 15 or later), will + enable GCS support in glibc. There is no special configuration flag. + GCS-enabled glibc is compatible with all existing executables and shared + libraries and will run with and without GCS support in the system. GCS is + opt-in and can be controlled at runtime via the glibc.cpu.aarch64_gcs + tunable, By default GCS is disabled. Linux kernel supports this since 6.13. + Deprecated and removed features, and other changes affecting compatibility: * The big-endian ARC port (arceb-linux-gnu) has been removed. |