* [PATCH] ix86: don't waste fixmap entries
@ 2013-05-29 12:22 Jan Beulich
2013-05-31 12:47 ` [tip:x86/mm] ix86: Don't " tip-bot for Jan Beulich
0 siblings, 1 reply; 2+ messages in thread
From: Jan Beulich @ 2013-05-29 12:22 UTC (permalink / raw)
To: mingo, tglx, hpa; +Cc: Marcelo Tosatti, linux-kernel
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@suse.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
---
arch/x86/include/asm/fixmap.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- 3.10-rc3/arch/x86/include/asm/fixmap.h
+++ 3.10-rc3-ix86-fixmap-no-pvclock/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
^ permalink raw reply [flat|nested] 2+ messages in thread
* [tip:x86/mm] ix86: Don't waste fixmap entries
2013-05-29 12:22 [PATCH] ix86: don't waste fixmap entries Jan Beulich
@ 2013-05-31 12:47 ` tip-bot for Jan Beulich
0 siblings, 0 replies; 2+ messages in thread
From: tip-bot for Jan Beulich @ 2013-05-31 12:47 UTC (permalink / raw)
To: linux-tip-commits
Cc: linux-kernel, hpa, mingo, mtosatti, jbeulich, JBeulich, tglx
Commit-ID: cbdce7b251de89deef79ec9e37b6cfa7d5595894
Gitweb: http://git.kernel.org/tip/cbdce7b251de89deef79ec9e37b6cfa7d5595894
Author: Jan Beulich <JBeulich@suse.com>
AuthorDate: Wed, 29 May 2013 13:22:23 +0100
Committer: Ingo Molnar <mingo@kernel.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@suse.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Link: http://lkml.kernel.org/r/51A60F1F02000078000D997C@nat28.tlf.novell.com
Signed-off-by: Ingo Molnar <mingo@kernel.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
^ permalink raw reply related [flat|nested] 2+ messages in thread
end of thread, other threads:[~2013-05-31 12:48 UTC | newest]
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2013-05-29 12:22 [PATCH] ix86: don't waste fixmap entries Jan Beulich
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