Some microkernels (NOVA) keep segment registers fixed across context switches for the sake of performance. The problem is that is breaks compatibility with binaries that abuse FS and GS for thread local storage.
Would there be an interest in replacing the inline TLS dereferencing code that uses %fs with a function call than can be placed in the vDSO?
Some microkernels (NOVA) keep segment registers fixed across context switches for the sake of performance. The problem is that is breaks compatibility with binaries that abuse FS and GS for thread local storage.
Would there be an interest in replacing the inline TLS dereferencing code that uses
%fswith a function call than can be placed in the vDSO?