Jeremy Fitzhardinge 464d1a78fb [PATCH] i386: Convert i386 PDA code to use %fs ... Convert the PDA code to use %fs rather than %gs as the segment for per-processor data. This is because some processors show a small but measurable performance gain for reloading a NULL segment selector (as %fs generally is in user-space) versus a non-NULL one (as %gs generally is). On modern processors the difference is very small, perhaps undetectable. Some old AMD "K6 3D+" processors are noticably slower when %fs is used rather than %gs; I have no idea why this might be, but I think they're sufficiently rare that it doesn't matter much. This patch also fixes the math emulator, which had not been adjusted to match the changed struct pt_regs. [frederik.deweerdt@gmail.com: fixit with gdb] [mingo@elte.hu: Fix KVM too] Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Ian Campbell <Ian.Campbell@XenSource.com> Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: Zachary Amsden <zach@vmware.com> Cc: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org>		2007-02-13 13:26:20 +01:00
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alpha	[PATCH] Dynamic kernel command-line: alpha	2007-02-12 09:48:37 -08:00
arm	[PATCH] mark struct file_operations const 2	2007-02-12 09:48:44 -08:00
arm26	[PATCH] Dynamic kernel command-line: arm26	2007-02-12 09:48:37 -08:00
avr32	[PATCH] mark struct file_operations const 2	2007-02-12 09:48:44 -08:00
cris	[PATCH] mark struct file_operations const 2	2007-02-12 09:48:44 -08:00
frv	[PATCH] Dynamic kernel command-line: frv	2007-02-12 09:48:37 -08:00
h8300	[PATCH] Dynamic kernel command-line: h8300	2007-02-12 09:48:38 -08:00
i386	[PATCH] i386: Convert i386 PDA code to use %fs	2007-02-13 13:26:20 +01:00
ia64	[PATCH] mark struct file_operations const 2	2007-02-12 09:48:44 -08:00
m32r	[PATCH] Dynamic kernel command-line: m32r	2007-02-12 09:48:38 -08:00
m68k	[PATCH] mark struct file_operations const 2	2007-02-12 09:48:44 -08:00
m68knommu	[PATCH] Dynamic kernel command-line: m68knommu	2007-02-12 09:48:38 -08:00
mips	[PATCH] mark struct file_operations const 2	2007-02-12 09:48:44 -08:00
parisc	[PATCH] mark struct file_operations const 2	2007-02-12 09:48:44 -08:00
powerpc	[PATCH] mark struct inode_operations const 1	2007-02-12 09:48:46 -08:00
ppc	[PATCH] mark struct file_operations const 2	2007-02-12 09:48:44 -08:00
s390	Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6	2007-02-12 09:57:44 -08:00
sh	[PATCH] mark struct file_operations const 2	2007-02-12 09:48:44 -08:00
sh64	[PATCH] Dynamic kernel command-line: sh64	2007-02-12 09:48:39 -08:00
sparc	[SPARC]: Re-export saved_command_line to modules.	2007-02-12 15:15:48 -08:00
sparc64	[SPARC]: Re-export saved_command_line to modules.	2007-02-12 15:15:48 -08:00
um	[PATCH] mark struct file_operations const 2	2007-02-12 09:48:44 -08:00
v850	[PATCH] mark struct file_operations const 2	2007-02-12 09:48:44 -08:00
x86_64	[PATCH] x86-64: x86_64-make-the-numa-hash-function-nodemap-allocation fix fix	2007-02-13 13:26:20 +01:00
xtensa	[PATCH] Dynamic kernel command-line: xtensa	2007-02-12 09:48:39 -08:00