From 8ac6f5d7f84bf362e67591708bcb9788cdc42c50 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 11 Aug 2021 08:30:26 +0100 Subject: ARM: 9113/1: uaccess: remove set_fs() implementation There are no remaining callers of set_fs(), so just remove it along with all associated code that operates on thread_info->addr_limit. There are still further optimizations that can be done: - In get_user(), the address check could be moved entirely into the out of line code, rather than passing a constant as an argument, - I assume the DACR handling can be simplified as we now only change it during user access when CONFIG_CPU_SW_DOMAIN_PAN is set, but not during set_fs(). Acked-by: Christoph Hellwig Signed-off-by: Arnd Bergmann Signed-off-by: Russell King (Oracle) --- arch/arm/kernel/signal.c | 8 -------- 1 file changed, 8 deletions(-) (limited to 'arch/arm/kernel/signal.c') diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c index a3a38d0a4c85..3e7ddac086c2 100644 --- a/arch/arm/kernel/signal.c +++ b/arch/arm/kernel/signal.c @@ -711,14 +711,6 @@ struct page *get_signal_page(void) return page; } -/* Defer to generic check */ -asmlinkage void addr_limit_check_failed(void) -{ -#ifdef CONFIG_MMU - addr_limit_user_check(); -#endif -} - #ifdef CONFIG_DEBUG_RSEQ asmlinkage void do_rseq_syscall(struct pt_regs *regs) { -- cgit v1.2.3