linux-kernel - [tip:efi/core] efi/x86: Add debug code to print cooked memmap

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <tip-22c091d02a5422d2825a4fb1af71e5a62f9e4d0f@git.kernel.org>
Date:   Wed, 1 Feb 2017 01:48:43 -0800
From:   tip-bot for Dave Young <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     mingo@...nel.org, tglx@...utronix.de, matt@...eblueprint.co.uk,
        peterz@...radead.org, hpa@...or.com, dyoung@...hat.com,
        linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
        ard.biesheuvel@...aro.org, nicstange@...il.com
Subject: [tip:efi/core] efi/x86: Add debug code to print cooked memmap

Commit-ID:  22c091d02a5422d2825a4fb1af71e5a62f9e4d0f
Gitweb:     http://git.kernel.org/tip/22c091d02a5422d2825a4fb1af71e5a62f9e4d0f
Author:     Dave Young <dyoung@...hat.com>
AuthorDate: Tue, 31 Jan 2017 13:21:41 +0000
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Wed, 1 Feb 2017 08:45:46 +0100

efi/x86: Add debug code to print cooked memmap

It is not obvious if the reserved boot area are added correctly, add a
efi_print_memmap() call to print the new memmap.

Tested-by: Nicolai Stange <nicstange@...il.com>
Signed-off-by: Dave Young <dyoung@...hat.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@...aro.org>
Reviewed-by: Nicolai Stange <nicstange@...il.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Matt Fleming <matt@...eblueprint.co.uk>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: linux-efi@...r.kernel.org
Link: http://lkml.kernel.org/r/1485868902-20401-10-git-send-email-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/platform/efi/efi.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index 0d4becf..565dff3 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -955,6 +955,11 @@ static void __init __efi_enter_virtual_mode(void)
 		return;
 	}
 
+	if (efi_enabled(EFI_DBG)) {
+		pr_info("EFI runtime memory map:\n");
+		efi_print_memmap();
+	}
+
 	BUG_ON(!efi.systab);
 
 	if (efi_setup_page_tables(pa, 1 << pg_shift)) {