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88df781afb
kernel-ark/drivers
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Matias Zabaljauregui 88df781afb lguest: fix crash on vmlinux images 
Typical message: 'lguest: unhandled trap 6 at 0x418726 (0x0)'

vmlinux guests were broken by 4cd8b5e2a1
'lguest: use KVM hypercalls', which rewrites guest text from kvm hypercalls
to trap 31.

The Launcher mmaps the kernel image.  The Guest executes and
immediately faults in the first text page (read-only).  Then it hits a
hypercall, and we rewrite that hypercall, causing a copy-on-write.
But the Guest pagetables still refer to the old page: we fault again,
but as Host we see the hypercall already rewritten, and pass the fault
back to the Guest.  The Guest hasn't set up an IDT yet, so we kill it.

This doesn't happen with bzImages: they unpack themselves and so the
text pages are already read-write.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Tested-by: Patrick McHardy <kaber@trash.net>
2009-04-19 23:14:00 +09:30
..
accessibility
acpi Revert "ACPI battery: fix async boot oops" 2009-04-11 12:45:20 -07:00
amba
ata [libata] fix build error on drivers/ata/pata_legacy.c 2009-04-17 19:05:33 -04:00
atm Replace all DMA_nBIT_MASK macro with DMA_BIT_MASK(n) 2009-04-13 15:04:33 -07:00
auxdisplay
base driver core: prevent device_for_each_child from oopsing 2009-04-16 16:17:11 -07:00
block USB: add reset endpoint operations 2009-04-17 10:50:27 -07:00
bluetooth
cdrom
char Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-04-17 09:56:11 -07:00
clocksource
connector
cpufreq
cpuidle
crypto dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
dca
dio
dma dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
edac edac: use to_delayed_work() 2009-04-13 15:04:34 -07:00
eisa
firewire
firmware dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
gpio
gpu Merge branch 'drm-intel-next' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel 2009-04-14 13:16:40 -07:00
hid
hwmon hwmon: sht15 humidity sensor driver 2009-04-13 15:04:29 -07:00
i2c i2c: Let new-style drivers implement attach_adapter 2009-04-13 17:02:14 +02:00
ide cs5536: define dma_sff_read_status() method 2009-04-18 17:42:20 +02:00
idle dma-mapping: replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64) 2009-04-07 08:31:10 -07:00
ieee1394 dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
infiniband Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband 2009-04-09 16:42:26 -07:00
input Merge branch 'next' into for-linus 2009-04-16 08:51:52 -07:00
isdn USB: add reset endpoint operations 2009-04-17 10:50:27 -07:00
leds leds: just ignore invalid GPIOs in leds-gpio 2009-04-08 14:13:48 +01:00
lguest lguest: fix crash on vmlinux images 2009-04-19 23:14:00 +09:30
macintosh
mca
md block: move bio list helpers into bio.h 2009-04-15 08:28:09 +02:00
media USB: add reset endpoint operations 2009-04-17 10:50:27 -07:00
memstick dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
message dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
mfd
misc sgi-xpc: clean up numerous globals 2009-04-13 15:04:33 -07:00
mmc mmc_spi: support for non-byte-aligned cards 2009-04-08 20:45:51 +02:00
mtd
net Merge master.kernel.org:/home/rmk/linux-2.6-arm 2009-04-17 13:51:14 -07:00
nubus
of
oprofile
parisc parport: Fix various uses of parport_pc 2009-04-14 08:48:50 -07:00
parport parport: Use the PCI IRQ if offered 2009-04-07 08:44:06 -07:00
pci Merge git://git.infradead.org/iommu-2.6 2009-04-13 11:35:50 -07:00
pcmcia
platform Merge branches 'release', 'APERF', 'ARAT', 'misc', 'kelvin', 'device-lock' and 'bjorn.notify' into release 2009-04-07 18:18:42 -04:00
pnp dma-mapping: replace all DMA_24BIT_MASK macro with DMA_BIT_MASK(24) 2009-04-07 08:31:12 -07:00
power Merge git://git.infradead.org/battery-2.6 2009-04-08 17:45:02 -07:00
ps3
rapidio dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
regulator
rtc
s390 [S390] dasd: fix idaw boundary checking for track based ccw 2009-04-14 15:37:25 +02:00
sbus sbus: changed ioctls to unlocked 2009-04-14 19:46:19 -07:00
scsi Fix lpfc_parse_bg_err()'s use of do_div() 2009-04-14 09:58:17 -07:00
serial [ARM] 5449/1: S3C: Use disable_irq_nosync() to fix boot lockups 2009-04-15 10:01:02 +01:00
sh
sn dma-mapping: replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64) 2009-04-07 08:31:10 -07:00
spi Merge branch 'fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 2009-04-15 09:58:21 +01:00
ssb
staging staging: slicoss: update README 2009-04-17 11:06:31 -07:00
tc
telephony
thermal
uio UIO: fix specific device driver missing statement for depmod 2009-04-16 16:17:11 -07:00
usb WUSB: correct format of wusb_chid sysfs file 2009-04-17 10:50:29 -07:00
uwb dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
video intelfb: support i854 2009-04-13 15:04:32 -07:00
virtio
w1
watchdog [WATCHDOG] omap_wdt.c: move probe function to .devinit.text 2009-04-08 06:21:57 +00:00
xen xen: honour VCPU availability on boot 2009-04-08 14:25:51 -07:00
zorro
Kconfig
Makefile