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Glibc Patch Being Reviewed For getrandom vDSO Support
One of the many exciting features merged for Linux 6.11 is getrandom() in the vDSO for very fast yet secure random number generation
One of the many exciting features merged for Linux 6.11 is getrandom() in the vDSO for very fast yet secure random number generation. Now that the kernel bits have landed, it's on to making use of it in the GNU C Library and other libc implementations. To make this procedure async-signal-safe, a simple guard is used in the LSB of the opaque state address, falling back to the syscall if there's reentrancy contention.
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