Answer by Tsyvarev for linux syscall using spinlock returning value to userspace
It is prohibited to return from syscall with spinlock holded. And, as usual with C code, none instruction is executed after return statement.Common practice is to save value obtained under lock into...
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I'm, currently struggling with the correct implementation of a kernel-spinlock in combination with a return statement which should return a value to userspace. I implemented a kernel syscall...
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