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Eddie Dong 2cc51560ae KVM: VMX: Avoid saving and restoring msr_efer on lightweight vmexit 
MSR_EFER.LME/LMA bits are automatically save/restored by VMX
hardware, KVM only needs to save NX/SCE bits at time of heavy
weight VM Exit. But clearing NX bits in host envirnment may
cause system hang if the host page table is using EXB bits,
thus we leave NX bits as it is. If Host NX=1 and guest NX=0, we
can do guest page table EXB bits check before inserting a shadow
pte (though no guest is expecting to see this kind of gp fault).
If host NX=0, we present guest no Execute-Disable feature to guest,
thus no host NX=0, guest NX=1 combination.

This patch reduces raw vmexit time by ~27%.

Me: fix compile warnings on i386.

Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-07-16 12:05:42 +03:00
..
acorn [PATCH] fix request->cmd == INT cases 2007-07-10 08:03:34 +02:00
acpi PCI: Change all drivers to use pci_device->revision 2007-07-11 16:02:10 -07:00
amba
ata Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2007-07-12 13:40:57 -07:00
atm PCI: ATM: lanai, change VENDOR to DEVICE 2007-07-11 16:02:10 -07:00
auxdisplay cfag12864bfb: Use sys_ instead of cfb_ framebuffer accessors 2007-06-01 08:18:28 -07:00
base sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes 2007-07-11 16:09:09 -07:00
block Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2007-07-15 16:51:54 -07:00
bluetooth [Bluetooth] Remove the redundant non-seekable llseek method 2007-07-11 06:53:45 +02:00
cdrom Remove legacy CDROM drivers 2007-07-10 08:03:34 +02:00
char [CHAR] Delete leftovers of old Alchemy UART driver 2007-07-13 17:39:59 +01:00
clocksource PCI: Change all drivers to use pci_device->revision 2007-07-11 16:02:10 -07:00
connector
cpufreq [CPUFREQ] Restore previously used governor on a hot-replugged CPU 2007-07-13 01:29:51 -04:00
crypto [CRYPTO] geode: Fix in-place operations and set key 2007-05-24 21:23:24 +10:00
dio
dma ioatdma: add the unisys "i/oat" pci vendor/device id 2007-07-13 08:06:19 -07:00
edac [S390] Kconfig: menus with depends on HAS_IOMEM. 2007-05-10 15:46:07 +02:00
eisa
fc4
firewire firewire: fw-sbp2: fix DMA mapping of management ORBs 2007-07-10 00:07:49 +02:00
firmware sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes 2007-07-11 16:09:09 -07:00
hid USB: add reset_resume method 2007-07-12 16:34:30 -07:00
hwmon hwmon/coretemp: fix a broken error path 2007-06-24 08:59:10 -07:00
i2c make i2c-acorn tristate 2007-07-15 16:40:52 -07:00
ide icside: devm_iounmap() needs linux/io.h 2007-07-15 16:40:52 -07:00
ieee1394 Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2007-07-15 16:51:54 -07:00
infiniband Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2007-07-15 16:51:54 -07:00
input sysfs: kill unnecessary attribute->owner 2007-07-11 16:09:06 -07:00
isdn PCI: Change all drivers to use pci_device->revision 2007-07-11 16:02:10 -07:00
kvm KVM: VMX: Avoid saving and restoring msr_efer on lightweight vmexit 2007-07-16 12:05:42 +03:00
leds [S390] Kconfig: menus with depends on HAS_IOMEM. 2007-05-10 15:46:07 +02:00
macintosh Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6 2007-07-12 13:40:20 -07:00
mca mca: add integrated device bus matching 2007-05-09 12:30:49 -07:00
md Merge branch 'ioat-md-accel-for-linus' of git://lost.foo-projects.org/~dwillia2/git/iop 2007-07-13 10:52:27 -07:00
media PCI: Change all drivers to use pci_device->revision 2007-07-11 16:02:10 -07:00
message Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2007-07-15 16:51:54 -07:00
mfd SM501: Check SM501 ID register on initialisation 2007-06-24 08:59:11 -07:00
misc sysfs: kill unnecessary attribute->owner 2007-07-11 16:09:06 -07:00
mmc Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2007-07-12 14:17:12 -07:00
mtd [MIPS] remove LASAT Networks platforms support 2007-07-10 17:33:04 +01:00
net Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2007-07-15 16:50:46 -07:00
nubus
oprofile Detach sched.h from mm.h 2007-05-21 09:18:19 -07:00
parisc sysfs: kill unnecessary attribute->owner 2007-07-11 16:09:06 -07:00
parport [PARISC] fix section mismatch in parport_gsc 2007-05-27 12:13:53 -04:00
pci Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 2007-07-12 13:41:29 -07:00
pcmcia sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes 2007-07-11 16:09:09 -07:00
pnp PNP SMCf010 quirk: work around Toshiba Portege 4000 ACPI issues 2007-07-06 10:23:43 -07:00
power Merge git://git.infradead.org/battery-2.6 2007-07-15 16:56:12 -07:00
ps3
rapidio sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes 2007-07-11 16:09:09 -07:00
rtc Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6 2007-07-12 13:40:20 -07:00
s390 Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2007-07-15 16:51:54 -07:00
sbus [SPARC]: Missing #include <linux/mm.h> in drivers/sbus/char/flash.c 2007-05-31 01:52:53 -07:00
scsi Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2007-07-15 16:51:54 -07:00
serial Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2007-07-12 13:40:57 -07:00
sh
sn
spi sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes 2007-07-11 16:09:09 -07:00
tc [MIPS] DEC: Fix modpost warning. 2007-07-12 17:41:07 +01:00
telephony [S390] Kconfig: menus with depends on HAS_IOMEM. 2007-05-10 15:46:07 +02:00
usb minimal fixes for drivers/usb/gadget/m66592-udc.c 2007-07-15 16:40:51 -07:00
video Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2007-07-12 13:40:57 -07:00
w1 missing argument in bin_attribute ->read()/->write() 2007-07-15 16:40:52 -07:00
zorro sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes 2007-07-11 16:09:09 -07:00
Kconfig Merge git://git.infradead.org/~dwmw2/battery-2.6 2007-07-10 14:47:59 -07:00
Makefile [BATTERY] Universal power supply class (was: battery class) 2007-07-10 11:25:44 +01:00