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33385150ac
Hook up the generic vDSO implementation to the x86 vDSO data page. Since the existing vDSO infrastructure is heavily based on the timekeeping functionality, which works over arrays of bases, a new macro is introduced for vvars that are not arrays. The vDSO function requires a ChaCha20 implementation that does not write to the stack, yet can still do an entire ChaCha20 permutation, so provide this using SSE2, since this is userland code that must work on all x86-64 processors. Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Samuel Neves <sneves@dei.uc.pt> # for vgetrandom-chacha.S Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
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