Commit 89fb3913 authored by Nicholas Piggin's avatar Nicholas Piggin Committed by Michael Ellerman
Browse files

powerpc: copy_thread don't set PPR in user interrupt frame regs 



syscalls do not set the PPR field in their interrupt frame and
return from syscall always sets the default PPR for userspace,
so setting the value in the ret_from_fork frame is not necessary
and mildly inconsistent. Remove it.

Signed-off-by: default avatarNicholas Piggin <npiggin@gmail.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230325122904.2375060-9-npiggin@gmail.com
parent d195ce46

arch/powerpc/kernel/process.c

+0 −5
Original line number Diff line number Diff line
@@ -1812,11 +1812,6 @@ int copy_thread(struct task_struct *p, const struct kernel_clone_args *args) 
				f = ret_from_fork;

		}



#ifdef CONFIG_PPC64

		if (cpu_has_feature(CPU_FTR_HAS_PPR))

			childregs->ppr = DEFAULT_PPR;

#endif



		childregs->msr &= ~(MSR_FP|MSR_VEC|MSR_VSX);

		p->thread.regs = childregs;

	}