'How does the Linux kernel temporarily disable x86 SMAP in copy_from_user?
I want to know how the Linux kernel disables x86 SMAP when executing the copy_from_user() function. I tried to find something in source code, but I failed.
Supervisor Mode Access Prevention (SMAP) is a security feature of x86 CPUs to prevent the kernel from accessing unintended user-space memory, which helps to fend off various exploits.
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