Differential D36234 Diff 111348 sys/kern/kern_cpuset.c

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sys/kern/kern_cpuset.c

Show First 20 Lines • Show All 1,737 Lines • ▼ Show 20 Lines	if (IN_CAPABILITY_MODE(td)) {
if (id != -1 &&		if (id != -1 &&
!(which == CPU_WHICH_TID && id == td->td_tid) &&		!(which == CPU_WHICH_TID && id == td->td_tid) &&
!(which == CPU_WHICH_PID && id == td->td_proc->p_pid))		!(which == CPU_WHICH_PID && id == td->td_proc->p_pid))
return (ECAPMODE);		return (ECAPMODE);
}		}
return (0);		return (0);
}		}

		#if defined(__powerpc__)
		/*
		* TODO: At least powerpc64 and powerpc64le kernels panic with
		* exception 0x480 (instruction segment exception) when copyin/copyout,
		* are set as a function pointer in cpuset_copy_cb struct and called by
		* an external module (like pfsync). Tip: copyin/copyout have an ifunc
		* resolver function.
		*
		* Bisect of LLVM shows that the behavior changed on LLVM 10.0 with
		* https://reviews.llvm.org/rGdc06b0bc9ad055d06535462d91bfc2a744b2f589
		*
		* This is a hack/workaround while problem is being discussed with LLVM
		* community
		*/
		static int
		cpuset_copyin(const void uaddr, void kaddr, size_t len)
		{
		return(copyin(uaddr, kaddr, len));
		}

		static int
		cpuset_copyout(const void kaddr, void uaddr, size_t len)
		{
		return(copyout(kaddr, uaddr, len));
		}

static const struct cpuset_copy_cb copy_set = {		static const struct cpuset_copy_cb copy_set = {
		.cpuset_copyin = cpuset_copyin,
		.cpuset_copyout = cpuset_copyout
		};
		#else
		static const struct cpuset_copy_cb copy_set = {
.cpuset_copyin = copyin,		.cpuset_copyin = copyin,
.cpuset_copyout = copyout		.cpuset_copyout = copyout
};		};
		#endif

#ifndef _SYS_SYSPROTO_H_		#ifndef _SYS_SYSPROTO_H_
struct cpuset_args {		struct cpuset_args {
cpusetid_t *setid;		cpusetid_t *setid;
};		};
#endif		#endif
int		int
sys_cpuset(struct thread td, struct cpuset_args uap)		sys_cpuset(struct thread td, struct cpuset_args uap)
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