[libc] [llvm] [libc] Implement pkey_alloc/free/get/set/mprotect for x86_64 linux (PR #162362)

[Jackson Stogel via llvm-commits]

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@@ -0,0 +1,25 @@
+#ifndef LLVM_SYS_MMAN_LINUX_GENERIC_PKEY_COMMON_H_
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jtstogel wrote:

Added, thanks

https://github.com/llvm/llvm-project/pull/162362