linux-kernel - [PATCH 09/10] efi/x86: Add debug code to print cooked memmap

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Date:   Tue, 31 Jan 2017 13:21:41 +0000
From:   Ard Biesheuvel <ard.biesheuvel@...aro.org>
To:     linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        "H . Peter Anvin" <hpa@...or.com>
Cc:     Dave Young <dyoung@...hat.com>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        linux-efi@...r.kernel.org, Matt Fleming <matt@...eblueprint.co.uk>
Subject: [PATCH 09/10] efi/x86: Add debug code to print cooked memmap

From: Dave Young <dyoung@...hat.com>

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

Signed-off-by: Dave Young <dyoung@...hat.com>
Cc: Matt Fleming <matt@...eblueprint.co.uk>
Reviewed-by: Nicolai Stange <nicstange@...il.com>
Tested-by: Nicolai Stange <nicstange@...il.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@...aro.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 0d4becfc5145..565dff3c9a12 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)) {
-- 
2.7.4