linux-kernel - [GIT PULL] x86 fixes for v3.11-rc8

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Message-Id: <201309011127.r81BRUpq025346@tazenda.hos.anvin.org>
Date:	Sun, 1 Sep 2013 04:27:30 -0700
From:	"H. Peter Anvin" <hpa@...ux.intel.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	<stable@...r.kernel.org>, Dave Hansen <dave.hansen@...el.com>,
	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...e.hu>,
	Ingo Molnar <mingo@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Yinghai Lu <yinghai@...nel.org>
Subject: [GIT PULL] x86 fixes for v3.11-rc8

Hi Linus,

A single very small boot fix for very large memory systems (> 0.5T).

The following changes since commit fd3930f70c8d14008f3377d51ce039806dfc542e:

  proc: more readdir conversion bug-fixes (2013-08-19 16:26:12 -0700)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-urgent-for-linus

The head of this tree is 527bf129f9a780e11b251cf2467dc30118a57d16.

  x86/mm: Fix boot crash with DEBUG_PAGE_ALLOC=y and more than 512G RAM (2013-08-20 10:06:50 +0200)

----------------------------------------------------------------
Yinghai Lu (1):
      x86/mm: Fix boot crash with DEBUG_PAGE_ALLOC=y and more than 512G RAM

 arch/x86/mm/init.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index 2ec29ac..04664cd 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -78,8 +78,8 @@ __ref void *alloc_low_pages(unsigned int num)
 	return __va(pfn << PAGE_SHIFT);
 }
 
-/* need 4 4k for initial PMD_SIZE, 4k for 0-ISA_END_ADDRESS */
-#define INIT_PGT_BUF_SIZE	(5 * PAGE_SIZE)
+/* need 3 4k for initial PMD_SIZE,  3 4k for 0-ISA_END_ADDRESS */
+#define INIT_PGT_BUF_SIZE	(6 * PAGE_SIZE)
 RESERVE_BRK(early_pgt_alloc, INIT_PGT_BUF_SIZE);
 void  __init early_alloc_pgt_buf(void)
 {
--
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