linux-kernel - [PATCH] x86-64, ptdump: Mark espfix area only if existent

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Message-Id: <1410114629-24523-1-git-send-email-minipli@googlemail.com>
Date:	Sun,  7 Sep 2014 20:30:29 +0200
From:	Mathias Krause <minipli@...glemail.com>
To:	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>
Cc:	x86@...nel.org, linux-kernel@...r.kernel.org,
	Mathias Krause <minipli@...glemail.com>,
	Arjan van de Ven <arjan.van.de.ven@...el.com>
Subject: [PATCH] x86-64, ptdump: Mark espfix area only if existent

We should classify the espfix area as such only if we actually have
enabled the corresponding option. Otherwise the page table dump might
look confusing.

Signed-off-by: Mathias Krause <minipli@...glemail.com>
Cc: Arjan van de Ven <arjan.van.de.ven@...el.com>
Cc: H. Peter Anvin <hpa@...or.com>
---
 arch/x86/mm/dump_pagetables.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c
index 167ffcac16ed..95a427e57887 100644
--- a/arch/x86/mm/dump_pagetables.c
+++ b/arch/x86/mm/dump_pagetables.c
@@ -48,7 +48,9 @@ enum address_markers_idx {
 	LOW_KERNEL_NR,
 	VMALLOC_START_NR,
 	VMEMMAP_START_NR,
+# ifdef CONFIG_X86_ESPFIX64
 	ESPFIX_START_NR,
+# endif
 	HIGH_KERNEL_NR,
 	MODULES_VADDR_NR,
 	MODULES_END_NR,
@@ -71,7 +73,9 @@ static struct addr_marker address_markers[] = {
 	{ PAGE_OFFSET,		"Low Kernel Mapping" },
 	{ VMALLOC_START,        "vmalloc() Area" },
 	{ VMEMMAP_START,        "Vmemmap" },
+# ifdef CONFIG_X86_ESPFIX64
 	{ ESPFIX_BASE_ADDR,	"ESPfix Area", 16 },
+# endif
 	{ __START_KERNEL_map,   "High Kernel Mapping" },
 	{ MODULES_VADDR,        "Modules" },
 	{ MODULES_END,          "End Modules" },
-- 
1.7.10.4

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