From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3vP4hV2pkpzDq60 for ; Thu, 16 Feb 2017 16:38:50 +1100 (AEDT) From: Michael Ellerman To: linuxppc-dev@ozlabs.org Cc: naveen.n.rao@linux.vnet.ibm.com Subject: [PATCH 2/2] powerpc/mm: Blacklist SLB symbols from kprobe Date: Thu, 16 Feb 2017 16:38:45 +1100 Message-Id: <1487223525-2665-2-git-send-email-mpe@ellerman.id.au> In-Reply-To: <1487223525-2665-1-git-send-email-mpe@ellerman.id.au> References: <1487223525-2665-1-git-send-email-mpe@ellerman.id.au> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , We can't sensibly take a trap at this point. So, blacklist these symbols. Reported-by: Anton Blanchard Signed-off-by: Naveen N. Rao Signed-off-by: Michael Ellerman --- arch/powerpc/mm/slb_low.S | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/powerpc/mm/slb_low.S b/arch/powerpc/mm/slb_low.S index 9beed92c1900..a85e06ea6c20 100644 --- a/arch/powerpc/mm/slb_low.S +++ b/arch/powerpc/mm/slb_low.S @@ -272,3 +272,11 @@ slb_compare_rr_to_size: clrrdi r3,r3,SID_SHIFT_1T /* clear out non-ESID bits */ b 7b + +_ASM_NOKPROBE_SYMBOL(slb_allocate_realmode) +_ASM_NOKPROBE_SYMBOL(slb_miss_kernel_load_linear) +_ASM_NOKPROBE_SYMBOL(slb_miss_kernel_load_io) +_ASM_NOKPROBE_SYMBOL(slb_compare_rr_to_size) +#ifdef CONFIG_SPARSEMEM_VMEMMAP +_ASM_NOKPROBE_SYMBOL(slb_miss_kernel_load_vmemmap) +#endif -- 2.7.4