From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr0-f199.google.com (mail-wr0-f199.google.com [209.85.128.199]) by kanga.kvack.org (Postfix) with ESMTP id 585776B0253 for ; Mon, 27 Nov 2017 15:44:10 -0500 (EST) Received: by mail-wr0-f199.google.com with SMTP id k18so18828333wre.11 for ; Mon, 27 Nov 2017 12:44:10 -0800 (PST) Received: from Galois.linutronix.de (Galois.linutronix.de. [2a01:7a0:2:106d:700::1]) by mx.google.com with ESMTPS id u21si22642408wrc.235.2017.11.27.12.44.09 for (version=TLS1_2 cipher=AES128-SHA bits=128/128); Mon, 27 Nov 2017 12:44:09 -0800 (PST) Message-Id: <20171127204257.732566340@linutronix.de> Date: Mon, 27 Nov 2017 21:34:20 +0100 From: Thomas Gleixner Subject: [patch 4/4] x86/mm/dump_pagetables: Use helper to get the shadow PGD References: <20171127203416.236563829@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Disposition: inline; filename=x86-mm-dump_pagetables--Use-helper-to-get-the-shadow-PGD.patch Sender: owner-linux-mm@kvack.org List-ID: To: LKML Cc: Dave Hansen , Andy Lutomirski , Ingo Molnar , Borislav Petkov , Brian Gerst , Denys Vlasenko , "H. Peter Anvin" , Josh Poimboeuf , Linus Torvalds , Peter Zijlstra , Rik van Riel , daniel.gruss@iaik.tugraz.at, hughd@google.com, keescook@google.com, linux-mm@kvack.org, michael.schwarz@iaik.tugraz.at, moritz.lipp@iaik.tugraz.at, richard.fellner@student.tugraz.at, Juergen Gross , Boris Ostrovsky Use kernel_to_shadow_pgdp() instead of open coding it. Fixes: ca646ac417b8 ("x86/mm/debug_pagetables: Allow dumping current pagetables") Fixes: 04bafab4b2ee ("x86/mm/dump_pagetables: Check Kaiser shadow page table for WX pages") Requested-by: Dave Hansen Signed-off-by: Thomas Gleixner --- arch/x86/mm/dump_pagetables.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/arch/x86/mm/dump_pagetables.c +++ b/arch/x86/mm/dump_pagetables.c @@ -504,8 +504,10 @@ void ptdump_walk_pgd_level(struct seq_fi void ptdump_walk_pgd_level_debugfs(struct seq_file *m, pgd_t *pgd, bool shadow) { +#ifdef CONFIG_KAISER if (shadow && kaiser_enabled) - pgd += PTRS_PER_PGD; + pgd = kernel_to_shadow_pgdp(pgd); +#endif ptdump_walk_pgd_level_core(m, pgd, false, false); } EXPORT_SYMBOL_GPL(ptdump_walk_pgd_level_debugfs); @@ -518,7 +520,7 @@ void ptdump_walk_shadow_pgd_level_checkw if (!kaiser_enabled) return; pr_info("x86/mm: Checking shadow page tables\n"); - pgd += PTRS_PER_PGD; + pgd = kernel_to_shadow_pgdp(pgd); ptdump_walk_pgd_level_core(NULL, pgd, true, false); #endif } -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org