From 89fb39134ae3b1e1f207af44a037721d92b32f70 Mon Sep 17 00:00:00 2001 From: Nicholas Piggin Date: Sat, 25 Mar 2023 22:29:04 +1000 Subject: [PATCH] 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: Nicholas Piggin Signed-off-by: Michael Ellerman Link: https://msgid.link/20230325122904.2375060-9-npiggin@gmail.com --- arch/powerpc/kernel/process.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 2d90f39581fa1..1fefafb2b29be 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -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; } -- 2.30.2