linux-kernel - [tip: x86/urgent] x86/entry/32: Increase the size of CPU_ENTRY_AREA

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Date:   Fri, 22 Nov 2019 22:02:15 -0000
From:   "tip-bot2 for Ingo Molnar" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Ingo Molnar <mingo@...nel.org>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [tip: x86/urgent] x86/entry/32: Increase the size of CPU_ENTRY_AREA_PAGES

The following commit has been merged into the x86/urgent branch of tip:

Commit-ID:     d9976e424909d44585206e90154f74723b5f9fe5
Gitweb:        https://git.kernel.org/tip/d9976e424909d44585206e90154f74723b5f9fe5
Author:        Ingo Molnar <mingo@...nel.org>
AuthorDate:    Fri, 22 Nov 2019 22:54:37 +01:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Fri, 22 Nov 2019 22:55:10 +01:00

x86/entry/32: Increase the size of CPU_ENTRY_AREA_PAGES

The following commit:

  880a98c33996: ("x86/cpu_entry_area: Add guard page for entry stack on 32bit")

Increased the size of 'struct cpu_entry_area' by 4K, so increase
CPU_ENTRY_AREA_PAGES from 40 to 41.

Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/include/asm/pgtable_32_types.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/pgtable_32_types.h b/arch/x86/include/asm/pgtable_32_types.h
index b0bc0ff..0fab4bf 100644
--- a/arch/x86/include/asm/pgtable_32_types.h
+++ b/arch/x86/include/asm/pgtable_32_types.h
@@ -44,7 +44,7 @@ extern bool __vmalloc_start_set; /* set once high_memory is set */
  * Define this here and validate with BUILD_BUG_ON() in pgtable_32.c
  * to avoid include recursion hell
  */
-#define CPU_ENTRY_AREA_PAGES	(NR_CPUS * 40)
+#define CPU_ENTRY_AREA_PAGES	(NR_CPUS * 41)
 
 #define CPU_ENTRY_AREA_BASE						\
 	((FIXADDR_TOT_START - PAGE_SIZE * (CPU_ENTRY_AREA_PAGES + 1))   \