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Diffstat (limited to 'manual/install.texi')
| -rw-r--r-- | manual/install.texi | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/manual/install.texi b/manual/install.texi index f6d9d92317..c1e49a94fe 100644 --- a/manual/install.texi +++ b/manual/install.texi @@ -152,20 +152,24 @@ PIE. This option also implies that glibc programs and tests are created as dynamic position independent executables (PIE) by default. @item --enable-cet +@itemx --enable-cet=permissive Enable Intel Control-flow Enforcement Technology (CET) support. When -@theglibc{} is built with @option{--enable-cet}, the resulting library +@theglibc{} is built with @option{--enable-cet} or +@option{--enable-cet=permissive}, the resulting library is protected with indirect branch tracking (IBT) and shadow stack (SHSTK)@. When CET is enabled, @theglibc{} 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 when CET is enabled, @theglibc{} requires CPUs capable of multi-byte NOPs, like x86-64 processors as well as Intel Pentium Pro or -newer. +newer. With @option{--enable-cet}, it is an error to dlopen a non CET +enabled shared library in CET enabled application. With +@option{--enable-cet=permissive}, CET is disabled when dlopening a +non CET enabled shared library in CET enabled application. NOTE: @option{--enable-cet} has been tested for i686, x86_64 and x32 on non-CET processors. @option{--enable-cet} has been tested for -x86_64 and x32 on CET SDVs, but Intel CET support hasn't been validated -for i686. +i686, x86_64 and x32 on CET processors. @item --disable-profile Don't build libraries with profiling information. You may want to use |