linux-kernel - [tip:x86/mm] ix86: Don't waste fixmap entries

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Date:	Fri, 31 May 2013 05:47:38 -0700
From:	tip-bot for Jan Beulich <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org,
	mtosatti@...hat.com, jbeulich@...e.com, JBeulich@...e.com,
	tglx@...utronix.de
Subject: [tip:x86/mm] ix86: Don't waste fixmap entries

Commit-ID:  cbdce7b251de89deef79ec9e37b6cfa7d5595894
Gitweb:     http://git.kernel.org/tip/cbdce7b251de89deef79ec9e37b6cfa7d5595894
Author:     Jan Beulich <JBeulich@...e.com>
AuthorDate: Wed, 29 May 2013 13:22:23 +0100
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Fri, 31 May 2013 13:08:18 +0200

ix86: Don't waste fixmap entries

The vsyscall related pvclock entries can only ever be used on
x86-64, and hence they shouldn't even get allocated for 32-bit
kernels (the more that it is there where address space is
relatively precious).

Signed-off-by: Jan Beulich <jbeulich@...e.com>
Cc: Marcelo Tosatti <mtosatti@...hat.com>
Link: http://lkml.kernel.org/r/51A60F1F02000078000D997C@nat28.tlf.novell.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/include/asm/fixmap.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/fixmap.h b/arch/x86/include/asm/fixmap.h
index 0dc7d9e..e846225 100644
--- a/arch/x86/include/asm/fixmap.h
+++ b/arch/x86/include/asm/fixmap.h
@@ -81,11 +81,11 @@ enum fixed_addresses {
 			    + ((VSYSCALL_END-VSYSCALL_START) >> PAGE_SHIFT) - 1,
 	VVAR_PAGE,
 	VSYSCALL_HPET,
-#endif
 #ifdef CONFIG_PARAVIRT_CLOCK
 	PVCLOCK_FIXMAP_BEGIN,
 	PVCLOCK_FIXMAP_END = PVCLOCK_FIXMAP_BEGIN+PVCLOCK_VSYSCALL_NR_PAGES-1,
 #endif
+#endif
 	FIX_DBGP_BASE,
 	FIX_EARLYCON_MEM_BASE,
 #ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT
--
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