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6a0668fc41fa479df617151c2d4e297299a4ffe2
linux/include/asm-i386
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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
..
mach-bigsmp
[PATCH] x86: convert bigsmp to use flat physical mode
2006-01-06 08:33:37 -08:00
mach-default
[PATCH] paravirt: header and stubs for paravirtualisation
2006-12-07 02:14:07 +01:00
mach-es7000
ACPICA: Remove duplicate table definitions (non-conflicting), cont
2007-02-02 21:14:29 -05:00
mach-generic
[PATCH] x86: sutomatically enable bigsmp when we have more than 8 CPUs
2005-09-05 00:06:10 -07:00
mach-numaq
[PATCH] Do not enforce unique IO_APIC_ID check for xAPIC systems (i386)
2005-06-23 09:45:09 -07:00
mach-summit
[PATCH] i386: Fix compilation with UP genericarch
2006-11-28 20:12:59 +01:00
mach-visws
[PATCH] visws build fix
2006-10-28 11:30:52 -07:00
mach-voyager
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
8253pit.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
a.out.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
acpi.h
ACPICA: Allow ACPI id to be u32 instead of u8.
2007-02-02 21:14:31 -05:00
agp.h
[PATCH] i386: inline asm cleanup
2005-09-05 00:06:11 -07:00
alternative-asm.i
Remove all inclusions of <linux/config.h>
2006-10-04 03:38:54 -04:00
alternative.h
[PATCH] paravirt: Patch inline replacements for paravirt intercepts
2006-12-07 02:14:08 +01:00
apic.h
[PATCH] paravirt: Add APIC accessors to paravirt-ops.
2006-12-07 02:14:08 +01:00
apicdef.h
x86_64: Remove stale lapic definition from apicdef.h
2006-04-01 22:50:03 -05:00
arch_hooks.h
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
atomic.h
[PATCH] Numerous fixes to kernel-doc info in source files.
2007-02-11 10:51:32 -08:00
auxvec.h
[PATCH] auxiliary vector cleanups
2005-09-07 16:57:21 -07:00
bitops.h
[PATCH] Numerous fixes to kernel-doc info in source files.
2007-02-11 10:51:32 -08:00
boot.h
[PATCH] i386: Restore CONFIG_PHYSICAL_START option
2007-01-05 23:55:23 -08:00
bug.h
[PATCH] Generic BUG for i386
2006-12-08 08:28:39 -08:00
bugs.h
[PATCH] paravirt: Allow selected bug checks to be
2006-12-07 02:14:08 +01:00
byteorder.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
cache.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
cacheflush.h
[PATCH] Optimize D-cache alias handling on fork
2006-12-13 09:27:08 -08:00
checksum.h
[NET]: I386 checksum annotations and cleanups.
2006-12-02 21:23:19 -08:00
cpu.h
[PATCH] i386: introduce the mechanism of disabling cpu hotplug control
2006-12-07 02:14:10 +01:00
cpufeature.h
[PATCH] i386: i386 add Intel BTS cpufeature bit and detection (take 2)
2006-12-07 02:14:11 +01:00
cputime.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
current.h
[PATCH] i386: Implement "current" with the PDA
2006-12-07 02:14:03 +01:00
debugreg.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
delay.h
[PATCH] paravirt: header and stubs for paravirtualisation
2006-12-07 02:14:07 +01:00
desc.h
[PATCH] paravirt: Patch inline replacements for paravirt intercepts
2006-12-07 02:14:08 +01:00
device.h
ACPI: Change ACPI to use dev_archdata instead of firmware_data
2006-12-01 14:52:01 -08:00
div64.h
[PATCH] include/asm-i386/: "extern inline" -> "static inline"
2005-09-10 10:06:34 -07:00
dma-mapping.h
[PATCH] Pass struct dev pointer to dma_cache_sync()
2006-12-07 08:39:41 -08:00
dma.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
dmi.h
[PATCH] x86_64: Implement early DMI scanning
2006-03-25 09:10:55 -08:00
dwarf2.h
[PATCH] i386/x86-64: Work around gcc bug with noreturn functions in unwinder
2006-09-26 10:52:41 +02:00
e820.h
[PATCH] compile error of register_memory()
2006-12-22 08:55:49 -08:00
edac.h
[PATCH] EDAC: core EDAC support code
2006-01-18 19:20:31 -08:00
elf.h
[PATCH] i386: Convert i386 PDA code to use %fs
2007-02-13 13:26:20 +01:00
emergency-restart.h
[PATCH] i386: Implement machine_emergency_reboot
2005-07-26 14:35:42 -07:00
errno.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
fcntl.h
[PATCH] Clean up struct flock64 definitions
2005-09-07 16:57:38 -07:00
fixmap.h
[PATCH] Fix CONFIG_COMPAT_VDSO
2007-01-26 13:50:58 -08:00
floppy.h
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
frame.i
Remove all inclusions of <linux/config.h>
2006-10-04 03:38:54 -04:00
futex.h
[PATCH] mm: pagefault_{disable,enable}()
2006-12-07 08:39:21 -08:00
genapic.h
[PATCH] x86: fix the irqbalance quirk for E7320/E7520/E7525
2006-12-07 02:14:10 +01:00
hardirq.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
highmem.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
hpet.h
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
hw_irq.h
[PATCH] i386/x86_64: Remove global IO_APIC_VECTOR
2006-10-08 12:24:02 -07:00
hypertransport.h
[PATCH] Initial generic hypertransport interrupt support
2006-10-04 07:55:29 -07:00
i387.h
[PATCH] i386: add sleazy FPU optimization
2006-12-07 02:14:01 +01:00
i8253.h
[PATCH] x86: i8253/i8259A lock cleanup
2005-06-30 08:45:10 -07:00
i8259.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
ide.h
[PATCH] ide: more conversion to pci_get APIs
2006-12-08 08:29:03 -08:00
intel_arch_perfmon.h
[PATCH] x86: i386/x86-64 Add nmi watchdog support for new Intel CPUs
2006-09-26 10:52:27 +02:00
io_apic.h
i386: clean up io-apic accesses
2006-11-01 09:11:00 -08:00
io.h
[PATCH] kill eth_io_copy_and_sum()
2007-02-09 09:14:07 -08:00
ioctl.h
[PATCH] Generic ioctl.h
2006-01-10 08:01:34 -08:00
ioctls.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
ipc.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
ipcbuf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
irq_regs.h
[PATCH] i386: Store the interrupt regs pointer in the PDA
2006-12-07 02:14:03 +01:00
irq.h
[PATCH] x86: fix the irqbalance quirk for E7320/E7520/E7525
2006-12-07 02:14:10 +01:00
irqflags.h
[PATCH] paravirt: Patch inline replacements for paravirt intercepts
2006-12-07 02:14:08 +01:00
ist.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
k8.h
[PATCH] x86_64: Clean and enhance up K8 northbridge access code
2006-06-26 10:48:15 -07:00
Kbuild
[PATCH] cleanup asm/setup.h userspace visibility
2006-12-07 08:39:46 -08:00
kdebug.h
[PATCH] Notify page fault call chain for i386
2006-06-26 09:58:22 -07:00
kexec.h
[PATCH] i386: Avoid overwriting the current pgd (V4, i386)
2006-09-26 10:52:38 +02:00
kmap_types.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
kprobes.h
[PATCH] IA64: kprobe invalidate icache of jump buffer
2006-07-31 13:28:38 -07:00
ldt.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
linkage.h
[PATCH] i386: fix prevent_tail_call
2005-05-26 16:16:16 -07:00
local.h
i386: improve and correct inline asm memory constraints
2006-07-08 15:24:18 -07:00
math_emu.h
[PATCH] i386: PDA: Fix math emulator for new pt_regs
2006-12-07 02:14:03 +01:00
mc146818rtc.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mca_dma.h
[PATCH] kernel-doc for kernel/dma.c
2006-10-03 08:03:41 -07:00
mca.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mce.h
[PATCH] Don't trigger full rebuild via CONFIG_X86_MCE
2006-06-23 07:42:56 -07:00
mman.h
[PATCH] add asm-generic/mman.h
2006-02-15 15:32:22 -08:00
mmu_context.h
[PATCH] i386: Convert i386 PDA code to use %fs
2007-02-13 13:26:20 +01:00
mmu.h
[PATCH] vdso: randomize the i386 vDSO by moving it into a vma
2006-06-27 17:32:38 -07:00
mmx.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mmzone.h
[PATCH] silence unused pgdat warning from alloc_bootmem_node and friends
2006-12-07 08:39:23 -08:00
module.h
[PATCH] i386: always enable regparm
2006-12-07 02:14:12 +01:00
mpspec_def.h
[PATCH] x86-64: remove remaining pc98 code
2006-12-07 02:14:19 +01:00
mpspec.h
[PATCH] mptspec: remove duplicate #include
2006-04-11 06:18:34 -07:00
msgbuf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
msidef.h
[PATCH] genirq: i386 irq: Move msi message composition into io_apic.c
2006-10-04 07:55:28 -07:00
msr.h
Merge ../linus
2006-12-12 17:41:41 -05:00
mtrr.h
[PATCH] Don't trigger full rebuild via CONFIG_MTRR
2006-06-23 07:42:56 -07:00
mutex.h
[PATCH] i386: Remove lock section support in mutex.h
2006-09-26 10:52:31 +02:00
namei.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
nmi.h
[PATCH] x86: all cpu backtrace
2006-12-07 02:14:01 +01:00
numa.h
[PATCH] x86-64: Use ACPI PXM to parse PCI<->node assignments
2005-09-12 10:49:57 -07:00
numaq.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
page.h
[PATCH] Fix CONFIG_COMPAT_VDSO
2007-01-26 13:50:58 -08:00
param.h
[PATCH] cleanup asm/setup.h userspace visibility
2006-12-07 08:39:46 -08:00
paravirt.h
[PATCH] paravirt: Add MMU virtualization to paravirt_ops
2006-12-07 02:14:08 +01:00
parport.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
pci-direct.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
pci.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
pda.h
[PATCH] i386: Convert i386 PDA code to use %fs
2007-02-13 13:26:20 +01:00
percpu.h
[PATCH] i386: espfix cleanup
2006-12-07 02:14:01 +01:00
pgalloc.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
pgtable-2level-defs.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
pgtable-2level.h
[PATCH] paravirt: fix missing pte update
2006-12-07 02:14:09 +01:00
pgtable-3level-defs.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
pgtable-3level.h
[PATCH] paravirt: fix missing pte update
2006-12-07 02:14:09 +01:00
pgtable.h
Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6
2006-12-07 08:59:11 -08:00
poll.h
[PATCH] POLLRDHUP/EPOLLRDHUP handling for half-closed devices notifications
2006-03-25 08:22:56 -08:00
posix_types.h
i386: improve and correct inline asm memory constraints
2006-07-08 15:24:18 -07:00
processor.h
[PATCH] i386: Convert i386 PDA code to use %fs
2007-02-13 13:26:20 +01:00
ptrace-abi.h
[PATCH] Split i386 and x86_64 ptrace.h
2006-09-26 08:49:10 -07:00
ptrace.h
[PATCH] i386: Convert i386 PDA code to use %fs
2007-02-13 13:26:20 +01:00
resource.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
rtc.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
rwlock.h
[PATCH] i386: Clean up spin/rwlocks
2006-09-26 10:52:32 +02:00
rwsem.h
[PATCH] lockdep: name some old style locks
2006-12-07 08:39:36 -08:00
scatterlist.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
seccomp.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sections.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
segment.h
[PATCH] paravirt: header and stubs for paravirtualisation
2006-12-07 02:14:07 +01:00
semaphore.h
[PATCH] i386: Use early clobbers for semaphores now
2006-09-27 14:39:51 -07:00
sembuf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
serial.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
setup.h
[PATCH] i386: 2048-byte command line
2007-02-12 09:48:39 -08:00
shmbuf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
shmparam.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sigcontext.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
siginfo.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
signal.h
[PATCH] headers_check: move inclusion of <linux/linkage.h> in <asm-i386/signal.h>
2006-09-13 07:32:15 -07:00
smp.h
[PATCH] i386: Implement smp_processor_id() with the PDA
2006-12-07 02:14:03 +01:00
socket.h
[AF_UNIX]: Datagram getpeersec
2006-06-29 16:58:06 -07:00
sockios.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sparsemem.h
[PATCH] sparsemem memory model for i386
2005-06-23 09:45:05 -07:00
spinlock_types.h
[PATCH] Remove 'volatile' from spinlock_types
2006-12-06 14:39:53 -08:00
spinlock.h
[PATCH] paravirt: Patch inline replacements for paravirt intercepts
2006-12-07 02:14:08 +01:00
srat.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
stacktrace.h
[PATCH] i386: Do stacktracer conversion too
2006-09-26 10:52:34 +02:00
stat.h
[PATCH] 2TB files: st_blocks is invalid when calling stat64
2006-03-26 08:57:00 -08:00
statfs.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
string.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
suspend.h
Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6
2006-12-07 08:59:11 -08:00
sync_bitops.h
[PATCH] x86: implement always-locked bit ops, for memory shared with an SMP hypervisor
2006-09-26 08:48:55 -07:00
system.h
[PATCH] paravirt: header and stubs for paravirtualisation
2006-12-07 02:14:07 +01:00
termbits.h
[PATCH] tty: preparatory structures for termios revamp
2006-12-08 08:28:56 -08:00
termios.h
[PATCH] consolidate line discipline number definitions
2007-02-11 10:51:26 -08:00
therm_throt.h
[PATCH] x86: Add a cumulative thermal throttle event counter.
2006-09-26 10:52:42 +02:00
thread_info.h
[PATCH] PM: Fix SMP races in the freezer
2006-12-13 09:05:49 -08:00
time.h
[PATCH] paravirt: header and stubs for paravirtualisation
2006-12-07 02:14:07 +01:00
timer.h
[PATCH] Time: i386 Conversion - part 3: Enable Generic Timekeeping
2006-06-26 09:58:21 -07:00
timex.h
[PATCH] Time: i386 Conversion - part 2: Rework TSC Support
2006-06-26 09:58:21 -07:00
tlb.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
tlbflush.h
[PATCH] paravirt: Add MMU virtualization to paravirt_ops
2006-12-07 02:14:08 +01:00
topology.h
[PATCH] sched: add option to serialize load balancing
2006-12-10 09:55:43 -08:00
tsc.h
[PATCH] x86: remove config.h includes from asm-i386 & asm-x86_64
2006-09-26 10:52:36 +02:00
types.h
[PATCH] Centralise definitions of sector_t and blkcnt_t
2006-12-04 19:41:15 -08:00
uaccess.h
[PATCH] fix sparse warnings from {asm,net}/checksum.h
2007-02-11 10:51:31 -08:00
ucontext.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
unaligned.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
unistd.h
[PATCH] remove kernel syscalls
2006-12-07 08:39:37 -08:00
unwind.h
Remove stack unwinder for now
2006-12-15 08:47:51 -08:00
user.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
vga.h
[PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use
2006-06-22 15:05:58 -07:00
vic.h
[VOYAGER] fix up ptregs removal mess
2006-10-12 22:25:03 -05:00
vm86.h
[PATCH] i386: Update sys_vm86 to cope with changed pt_regs and %gs usage
2006-12-07 02:14:03 +01:00
voyager.h
[VOYAGER] fix up attribute packed specifiers in voyager.h
2006-10-12 22:23:18 -05:00
xor.h
[PATCH] i386: inline asm cleanup
2005-09-05 00:06:11 -07:00