From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934589AbeEILpQ (ORCPT ); Wed, 9 May 2018 07:45:16 -0400 Received: from mga14.intel.com ([192.55.52.115]:26332 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934376AbeEILpM (ORCPT ); Wed, 9 May 2018 07:45:12 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,381,1520924400"; d="scan'208";a="54445866" From: Adrian Hunter To: Thomas Gleixner , Arnaldo Carvalho de Melo Cc: Ingo Molnar , Peter Zijlstra , Andy Lutomirski , "H. Peter Anvin" , Andi Kleen , Alexander Shishkin , Dave Hansen , Joerg Roedel , Jiri Olsa , linux-kernel@vger.kernel.org, x86@kernel.org Subject: [PATCH RFC 03/19] x86: Add entry trampolines to kcore Date: Wed, 9 May 2018 14:43:32 +0300 Message-Id: <1525866228-30321-4-git-send-email-adrian.hunter@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1525866228-30321-1-git-send-email-adrian.hunter@intel.com> References: <1525866228-30321-1-git-send-email-adrian.hunter@intel.com> Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Alexander Shishkin Signed-off-by: Alexander Shishkin --- arch/x86/mm/cpu_entry_area.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/x86/mm/cpu_entry_area.c b/arch/x86/mm/cpu_entry_area.c index d1da5cf4b2de..fb1fbc8538fa 100644 --- a/arch/x86/mm/cpu_entry_area.c +++ b/arch/x86/mm/cpu_entry_area.c @@ -3,6 +3,7 @@ #include #include #include +#include #include #include @@ -14,6 +15,7 @@ #ifdef CONFIG_X86_64 static DEFINE_PER_CPU_PAGE_ALIGNED(char, exception_stacks [(N_EXCEPTION_STACKS - 1) * EXCEPTION_STKSZ + DEBUG_STKSZ]); +static DEFINE_PER_CPU(struct kcore_list, kcore_entry_trampoline); #endif struct cpu_entry_area *get_cpu_entry_area(int cpu) @@ -147,6 +149,9 @@ static void __init setup_cpu_entry_area(int cpu) cea_set_pte(&get_cpu_entry_area(cpu)->entry_trampoline, __pa_symbol(_entry_trampoline), PAGE_KERNEL_RX); + kclist_add(&per_cpu(kcore_entry_trampoline, cpu), + &get_cpu_entry_area(cpu)->entry_trampoline, PAGE_SIZE, + KCORE_TEXT); #endif percpu_setup_debug_store(cpu); } -- 1.9.1