From 937fb7003ee1f37faed1f1a4ece46e8a14863d92 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Tue, 19 Oct 2021 09:29:23 +0200 Subject: powerpc/kuap: Add kuap_lock() Add kuap_lock() and call it when entering interrupts from user. It is called kuap_lock() as it is similar to kuap_save_and_lock() without the save. However book3s/32 already have a kuap_lock(). Rename it kuap_lock_addr(). Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/4437e2deb9f6f549f7089d45e9c6f96a7e77905a.1634627931.git.christophe.leroy@csgroup.eu --- arch/powerpc/kernel/interrupt.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/powerpc/kernel/interrupt.c') diff --git a/arch/powerpc/kernel/interrupt.c b/arch/powerpc/kernel/interrupt.c index 75dc045bdcb8..beb55bc92ffe 100644 --- a/arch/powerpc/kernel/interrupt.c +++ b/arch/powerpc/kernel/interrupt.c @@ -81,6 +81,8 @@ notrace long system_call_exception(long r3, long r4, long r5, { syscall_fn f; + kuap_lock(); + regs->orig_gpr3 = r3; if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG)) -- cgit v1.2.3