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Avi Kivity 6af11b9e82 KVM: Prevent system selectors leaking into guest on real->protected mode transition on vmx ... Intel virtualization extensions do not support virtualizing real mode. So kvm uses virtualized vm86 mode to run real mode code. Unfortunately, this virtualized vm86 mode does not support the so called "big real" mode, where the segment selector and base do not agree with each other according to the real mode rules (base == selector << 4). To work around this, kvm checks whether a selector/base pair violates the virtualized vm86 rules, and if so, forces it into conformance. On a transition back to protected mode, if we see that the guest did not touch a forced segment, we restore it back to the original protected mode value. This pile of hacks breaks down if the gdt has changed in real mode, as it can cause a segment selector to point to a system descriptor instead of a normal data segment. In fact, this happens with the Windows bootloader and the qemu acpi bios, where a protected mode memcpy routine issues an innocent 'pop %es' and traps on an attempt to load a system descriptor. "Fix" by checking if the to-be-restored selector points at a system segment, and if so, coercing it into a normal data segment. The long term solution, of course, is to abandon vm86 mode and use emulation for big real mode. Signed-off-by: Avi Kivity <avi@qumranet.com>		18 years ago
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acorn	[ARM] Acorn: move the i2c bus driver into drivers/i2c	18 years ago
acpi	[PATCH] i386: add command line option "local_apic_timer_c2_ok"	18 years ago
amba	…
ata	pata_ixp4xx_cf: fix interrupt	18 years ago
atm	[PATCH] zatm __init abuse	18 years ago
auxdisplay	…
base	[PATCH] sysfs and driver core: add callback helper, used by SCSI and S390	18 years ago
block	[PATCH] paride endianness annotations	18 years ago
bluetooth	…
cdrom	[PATCH] Fix soft lockup with iSeries viocd driver	18 years ago
char	[PATCH] tty: Fix two reported pid leaks	18 years ago
clocksource	[PATCH] clocksource init adjustments (fix bug #7426)	18 years ago
connector	[CONNECTOR]: Bugfix for cn_call_callback()	18 years ago
cpufreq	…
crypto	[PATCH] geode-aes: use unsigned long for spin_lock_irqsave	18 years ago
dio	…
dma	[PATCH] rm pointless dmaengine exports	18 years ago
edac	…
eisa	…
fc4	…
firmware	…
hid	Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jikos/hid	18 years ago
hwmon	[PATCH] hwmon: Build fix for SENSORS_W83793	18 years ago
i2c	i2c/ds1374: Check workqueue creation status	18 years ago
ide	ide: use correct IDE error recovery	18 years ago
ieee1394	ieee1394: fix oops on "modprobe -r ohci1394" after network class_device conversion	18 years ago
infiniband	[NET]: Fix neighbour destructor handling.	18 years ago
input	Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/dtor/input	18 years ago
isdn	…
kvm	KVM: Prevent system selectors leaking into guest on real->protected mode transition on vmx	18 years ago
leds	…
macintosh	…
mca	…
md	[PATCH] fix read past end of array in md/linear.c	18 years ago
media	[PATCH] cx88-dvb: fix nxt200x rf input switching	18 years ago
message	…
mfd	…
misc	asus-laptop: make code static	18 years ago
mmc	[ARM] 4256/1: i.MX/MX1 SDHC fix/workaround of SD card recognition problems	18 years ago
mtd	[MTD] [OneNAND] Classify the page data and oob buffer	18 years ago
net	[SUNGEM]: Fix MAC address setting when interface is up.	18 years ago
nubus	…
oprofile	…
parisc	…
parport	…
pci	PCI: Fix warning message in PCIE port driver	18 years ago
pcmcia	…
pnp	[PATCH] reduce pnp syslog spam	18 years ago
ps3	[PATCH] C99 initializers, proper use of const in drivers/ps3	18 years ago
rapidio	…
rtc	[ARM] rtc-pcf8583: Final fixes for this RTC on RiscPC	18 years ago
s390	[S390] zcrypt: Fix ap_poll_requests counter in lost requests error path.	18 years ago
sbus	…
scsi	[PATCH] sysfs and driver core: add callback helper, used by SCSI and S390	18 years ago
serial	[PATCH] add Fujitsu Siemens Tablet PC devices to 8250_pnp.c	18 years ago
sh	…
sn	…
spi	[PATCH] spi_s3c24xx.c: warning fix	18 years ago
tc	…
telephony	…
usb	USB: fix usb-serial/ftdi build warning	18 years ago
video	[PATCH] rivafb: fix initial brightness	18 years ago
w1	…
zorro	…
Kconfig	…
Makefile	…