linux-kernel - [PATCH] x86: 64 bit print out absent pages num too

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>] [day] [month] [year] [list]

Date:	Mon, 13 Oct 2008 23:24:43 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, Yinghai Lu <yinghai@...nel.org>
Subject: [PATCH] x86: 64 bit print out absent pages num too

so users are not confused with memhole causing big total ram

we don't need to worry about 32 bit, because memhole is always
above max_low_pfn.

Signed-off-by: Yinghai Lu <yinghai@...nel.org>
---
 arch/x86/mm/init_64.c |    9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

Index: linux-2.6/arch/x86/mm/init_64.c
===================================================================
--- linux-2.6.orig/arch/x86/mm/init_64.c
+++ linux-2.6/arch/x86/mm/init_64.c
@@ -878,6 +878,7 @@ static struct kcore_list kcore_mem, kcor
 void __init mem_init(void)
 {
 	long codesize, reservedpages, datasize, initsize;
+	unsigned long absent_pages;
 
 	start_periodic_check_for_corruption();
 
@@ -893,8 +894,9 @@ void __init mem_init(void)
 #else
 	totalram_pages = free_all_bootmem();
 #endif
-	reservedpages = max_pfn - totalram_pages -
-					absent_pages_in_range(0, max_pfn);
+
+	absent_pages = absent_pages_in_range(0, max_pfn);
+	reservedpages = max_pfn - totalram_pages - absent_pages;
 	after_bootmem = 1;
 
 	codesize =  (unsigned long) &_etext - (unsigned long) &_text;
@@ -911,10 +913,11 @@ void __init mem_init(void)
 				 VSYSCALL_END - VSYSCALL_START);
 
 	printk(KERN_INFO "Memory: %luk/%luk available (%ldk kernel code, "
-				"%ldk reserved, %ldk data, %ldk init)\n",
+			 "%ldk absent, %ldk reserved, %ldk data, %ldk init)\n",
 		(unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
 		max_pfn << (PAGE_SHIFT-10),
 		codesize >> 10,
+		absent_pages << (PAGE_SHIFT-10),
 		reservedpages << (PAGE_SHIFT-10),
 		datasize >> 10,
 		initsize >> 10);
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/