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authorH.J. Lu <hjl.tools@gmail.com>2018-07-18 09:52:40 -0700
committerH.J. Lu <hjl.tools@gmail.com>2018-07-18 09:52:53 -0700
commite6c695099b7894bce72de04009c889c8f6e674ae (patch)
tree13f0ff6ccee563fc3dba6e37581241c9cede0894 /NEWS
parentx86-64: Use _CET_NOTRACK in memcmp-sse4.S (diff)
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Intel CET: Document --enable-cet
* NEWS: Mention --enable-cet. * manual/install.texi: Document --enable-cet. * INSTALL: Regenerated.
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@@ -9,6 +9,16 @@ Version 2.28
Major new features:
+* The GNU C Library can now be compiled with support for Intel CET, AKA
+ Intel Control-flow Enforcement Technology. When the library is built
+ with --enable-cet, the resulting glibc is protected with indirect
+ branch tracking (IBT) and shadow stack (SHSTK). CET-enabled glibc is
+ compatible with all existing executables and shared libraries. This
+ feature is currently supported on i386, x86_64 and x32 with GCC 8 and
+ binutils 2.29 or later. Note that CET-enabled glibc requires CPUs
+ capable of multi-byte NOPs, like x86-64 processors as well as Intel
+ Pentium Pro or newer.
+
* The GNU C Library now has correct support for ABSOLUTE symbols
(SHN_ABS-relative symbols). Previously such ABSOLUTE symbols were
relocated incorrectly or in some cases discarded. The GNU linker can