Avi Kivity b2da15ac26 KVM: VMX: Optimize %ds, %es reload ... On x86_64, we can defer %ds and %es reload to the heavyweight context switch, since nothing in the lightweight paths uses the host %ds or %es (they are ignored by the processor). Furthermore we can avoid the load if the segments are null, by letting the hardware load the null segments for us. This is the expected case. On i386, we could avoid the reload entirely, since the entry.S paths take care of reload, except for the SYSEXIT path which leaves %ds and %es set to __USER_DS. So we set them to the same values as well. Saves about 70 cycles out of 1600 (around 4%; noisy measurements). Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>		2012-05-16 16:03:19 -03:00
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boot	x86, boot: Correct CFLAGS for hostprogs	2012-03-22 12:42:51 -07:00
configs	x86/kconfig: Remove CONFIG_TR=y from the defconfigs	2012-03-24 08:18:03 +01:00
crypto	Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2012-03-22 20:19:30 -07:00
ia32	Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-03-29 18:21:35 -07:00
include/asm	KVM guest: make kvm_para_available() check hypervisor bit reading cpuid leaf	2012-05-06 15:59:49 +03:00
kernel	Merge branch 'linus' into queue	2012-04-19 17:06:26 -03:00
kvm	KVM: VMX: Optimize %ds, %es reload	2012-05-16 16:03:19 -03:00
lguest	lguest: Make sure interrupt is allocated ok by lguest_setup_irq	2012-01-12 15:44:47 +10:30
lib	Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-04-16 18:35:21 -07:00
math-emu	x86: Rename trap_no to trap_nr in thread_struct	2012-03-13 06:24:09 +01:00
mm	Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-03-29 18:21:35 -07:00
net	bpf jit: Let the x86 jit handle negative offsets	2012-04-03 18:01:41 -04:00
oprofile	x86: Factor out TIF_IA32 from 32-bit address space	2012-02-20 12:48:46 -08:00
pci	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci	2012-03-23 14:02:12 -07:00
platform	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-03-29 14:28:26 -07:00
power	x86, kvm: Call restore_sched_clock_state() only after %gs is initialized	2012-04-02 13:53:00 +02:00
syscalls	Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-03-29 18:12:23 -07:00
tools	x86/tools: Add decoded instruction dump mode	2011-12-05 14:53:23 +01:00
um	um: Use asm-generic/switch_to.h	2012-04-10 00:13:45 +02:00
vdso	Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-03-29 18:12:23 -07:00
video	x86: fix up files really needing to include module.h	2011-10-31 19:30:36 -04:00
xen	Two fixes for regressions:	2012-04-06 17:54:53 -07:00
.gitignore	x86/kprobes: Add arch/x86/tools/insn_sanity to .gitignore	2012-01-16 08:21:59 +01:00
Kbuild	net: filter: Just In Time compiler for x86-64	2011-04-27 23:05:08 -07:00
Kconfig	Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-03-29 18:12:23 -07:00
Kconfig.cpu	x86: Tighten dependencies of CPU_SUP_*_32	2012-03-08 10:57:34 +01:00
Kconfig.debug	Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-01-11 19:13:40 -08:00
Makefile	x86: Use -mno-avx when available	2012-03-30 10:06:39 -07:00
Makefile_32.cpu	x86, cpu: Move AMD Elan Kconfig under "Processor family"	2011-04-08 13:01:25 -07:00
Makefile.um	um: fix linker script generation	2012-04-09 13:59:00 -04:00