From: Toshi Kani <toshi.kani@hp.com>
To: hpa@zytor.com, tglx@linutronix.de, mingo@redhat.com
Cc: akpm@linux-foundation.org, bp@alien8.de, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, x86@kernel.org, jgross@suse.com,
konrad.wilk@oracle.com, elliott@hp.com,
Toshi Kani <toshi.kani@hp.com>
Subject: [PATCH v2 1/4] x86/vdso32: Define PGTABLE_LEVELS to 32bit VDSO
Date: Wed, 15 Jul 2015 10:23:52 -0600 [thread overview]
Message-ID: <1436977435-31826-2-git-send-email-toshi.kani@hp.com> (raw)
In-Reply-To: <1436977435-31826-1-git-send-email-toshi.kani@hp.com>
In case of CONFIG_X86_64, vdso32/vclock_gettime.c fakes a 32bit
kernel configuration by re-defining it to CONFIG_X86_32. However,
it does not re-define CONFIG_PGTABLE_LEVELS leaving it as 4 levels.
Fix it by re-defining CONFIG_PGTABLE_LEVELS to 2 as X86_PAE is not
set.
Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
---
arch/x86/entry/vdso/vdso32/vclock_gettime.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x86/entry/vdso/vdso32/vclock_gettime.c b/arch/x86/entry/vdso/vdso32/vclock_gettime.c
index 175cc72..87a86e0 100644
--- a/arch/x86/entry/vdso/vdso32/vclock_gettime.c
+++ b/arch/x86/entry/vdso/vdso32/vclock_gettime.c
@@ -14,11 +14,13 @@
*/
#undef CONFIG_64BIT
#undef CONFIG_X86_64
+#undef CONFIG_PGTABLE_LEVELS
#undef CONFIG_ILLEGAL_POINTER_VALUE
#undef CONFIG_SPARSEMEM_VMEMMAP
#undef CONFIG_NR_CPUS
#define CONFIG_X86_32 1
+#define CONFIG_PGTABLE_LEVELS 2
#define CONFIG_PAGE_OFFSET 0
#define CONFIG_ILLEGAL_POINTER_VALUE 0
#define CONFIG_NR_CPUS 1
--
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next prev parent reply other threads:[~2015-07-15 16:25 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-15 16:23 [PATCH v2 0/4] x86, mm: Handle large PAT bit in pud/pmd interfaces Toshi Kani
2015-07-15 16:23 ` Toshi Kani [this message]
2015-07-15 16:23 ` [PATCH v2 2/4] x86, asm: Move PUD_PAGE macros to page_types.h Toshi Kani
2015-07-15 16:23 ` [PATCH v2 3/4] x86: Fix pud/pmd interfaces to handle large PAT bit Toshi Kani
2015-07-15 16:23 ` [PATCH v2 4/4] x86, mm: Fix page table dump to show " Toshi Kani
2015-07-21 8:05 ` [PATCH v2 0/4] x86, mm: Handle large PAT bit in pud/pmd interfaces Ingo Molnar
2015-07-21 14:52 ` Toshi Kani
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