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2007-09-10Fix broken pata_via cable detectionLaurent Riffard
via_do_set_mode overwrites 80-wire cable detection bits. Let's preserve them. Signed-off-by: Laurent Riffard <laurent.riffard@free.fr> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-09-10Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds
* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: i2c-algo-bit: Read block data bugfix i2c-pxa: Fix adapter number i2c-gpio: Fix adapter number
2007-09-10Merge branch 'release' of git://lm-sensors.org/kernel/mhoffman/hwmon-2.6Linus Torvalds
* 'release' of git://lm-sensors.org/kernel/mhoffman/hwmon-2.6: hwmon: End of I/O region off-by-one
2007-09-09i2c-algo-bit: Read block data bugfixDavid Brownell
This fixes a bug in the way i2c-algo-bit handles I2C_M_RECV_LEN, used to implement i2c_smbus_read_block_data(). Previously, in the absence of PEC (rarely used!) it would NAK the "length" byte: S addr Rd [A] [length] NA That prevents the subsequent data bytes from being read: S addr Rd [A] [length] { A [data] }* NA The primary fix just reorders two code blocks, so the length used in the "should I NAK now?" check incorporates the data which it just read from the slave device. However, that move also highlighted other fault handling glitches. This fixes those by abstracting the RX path ack/nak logic, so it can be used in more than one location. Also, a few CodingStyle issues were also resolved. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-09-09i2c-pxa: Fix adapter numberJean Delvare
It turns out that platform_device.id is a "u32" so testing it for being nonnegative is useless when setting up an i2c adapte. Instead, do what the platform_bus code does and test it against the value "-1". Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-09-09i2c-gpio: Fix adapter numberDavid Brownell
It turns out that platform_device.id is a "u32" so testing it for being nonnegative is useless when setting up an i2c bitbang device. Instead, do what the platform_bus code does and test it against the value "-1". Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-09-09hwmon: End of I/O region off-by-oneJean Delvare
Fix an off-by-one error in the I/O region declaration of two hardware monitoring drivers (lm78 and w83781d.) We were requesting one extra port at the end of the region. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-09-07firewire: fw-ohci: ignore failure of pci_set_power_state (fix suspend ↵Stefan Richter
regression) Fixes (papers over) "Sleep problems with kernels >= 2.6.21 on powerpc", http://lkml.org/lkml/2007/8/25/155. The issue is that the FireWire controller's pci_dev.current_state of iBook G3 and presumably older PowerBooks is still in PCI_UNKNOWN instead of PCI_D0 when the firewire driver's .suspend method is called. Like it was suggested earlier in http://lkml.org/lkml/2006/10/24/13, we do not fail .suspend anymore if pci_set_power_state failed. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-09-04Merge git://git.infradead.org/~dwmw2/mtd-2.6.23Linus Torvalds
2007-09-02[MTD] Initialise s_flags in get_sb_mtd_aux()David Howells
Initialise s_flags in get_sb_mtd_aux() from the flags parameter. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-09-01Fix sata_via write errors on PATA drive connected to VT6421Ondrej Zary
I think that I've found and fixed the problem. There is a copy/paste bug in vt6421_set_dma_mode() function which causes wrong values to be written to PATA_UDMA_TIMING register. This patch fixes a copy/paste bug that breaks DMA modes on VT6421 PATA port. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-09-01[libata] ata_piix: properly terminate DMI system listJeff Garzik
If you don't terminate a list, bad things happen... Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: IB/ehca: SRQ fixes to enable IPoIB CM IB/ehca: Fix Small QP regressions
2007-08-31Do not use the ia64 clocksource on non-ia64 architecturesLinus Torvalds
The HPET clocksource in drivers/char/hpet.c was written as generic code for ia64, but it is not yet ready to replace the native HPET clocksource implementations that the i386/x86-64 architectures use. On x86[-64], trying to register this clocksource results in potentially multiple hpet-based clocksources being registered, and if the ia64 one is chosen on x86_64 some users have experienced hangs. Eventually all three architectures may end up using the same code, but that is not the case right now. Cc: John Stultz <johnstul@us.ibm.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Paolo Ornati <ornati@fastwebnet.it> Cc: Bob Picco <bob.picco@hp.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-31Merge branch 'upstream-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: - cxgb3 engine microcode load cxgb3 - Fix dev->priv usage qeth: Drop ARP packages on HiperSockets interface with NOARP attribute. qeth: provide specific message for OSA-adapters exclusively used qeth: crash during reboot after failing online setting qeth: Announce tx checksumming for qeth devices in TSO/EDDP mode qeth: dont return the return values of void functions. qeth: enforce a rate limit for inbound scatter gather messages qeth: ungrouping a device must not be interruptible netxen: fix crashes during module unload netxen: Avoid firmware load in PCI probe PS3: fix the bug that 'ifconfig down' would hang IOC3: Program UART predividers.
2007-08-31IB/ehca: SRQ fixes to enable IPoIB CMJoachim Fenkes
Fix ehca SRQ support so that IPoIB connected mode works: - Report max_srq > 0 if SRQ is supported - Report "last wqe reached" asynchronous event when base QP dies; this is required by the IB spec and IPoIB CM relies on receiving it when cleaning up. Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-08-31IB/ehca: Fix Small QP regressionsStefan Roscher
The new Small QP code had a few bugs that would also make it trigger for non-Small QPs. Fix them. Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-08-31Merge branch 'upstream-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev: [libata] Bump driver versions ata_piix: implement IOCFG bit18 quirk libata: implement BROKEN_HPA horkage and apply it to affected drives sata_promise: FastTrack TX4200 is a second-generation chip pata_marvell: Add more identifiers ata_piix: add Satellite U200 to broken suspend list ata: add ATA_MWDMA* and ATA_SWDMA* defines ata_piix: IDE mode SATA patch for Intel Tolapai libata-core: Allow translation setting to fail
2007-08-31- cxgb3 engine microcode loadDivy Le Ray
Load the engine microcode when an interface is brought up, instead of of doing it when the module is loaded. Loosen up tight binding between the driver and the engine microcode version. There is no need for microcode update with T3A boards. Fix the file naming. Do a better job at logging the loading activity. Signed-off-by: Divy Le Ray <divy@chelsio.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31cxgb3 - Fix dev->priv usageDivy Le Ray
cxgb3 used netdev_priv() and dev->priv for different purposes. In 2.6.23, netdev_priv() == dev->priv, cxgb3 needs a fix. This patch is a partial backport of Dave Miller's changes in the net-2.6.24 git branch. Without this fix, cxgb3 crashes on 2.6.23. Signed-off-by: Divy Le Ray <divy@chelsio.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31qeth: Drop ARP packages on HiperSockets interface with NOARP attribute.Klaus D. Wacker
A network interface can get ARP packets even when the interface has NOARP specified. In a HiperSockets environment this disturbs receiving systems when packets are sent on the multicast queue. (E.g. TCP/IP on z/VM issues messages reporting invalid data on the HiperSockets interface.) Qeth will no longer send ARP packets on HiperSockets interface when interface has the NOARP attribute. Signed-off-by: Klaus D. Wacker <kdwacker@de.ibm.com> Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31qeth: provide specific message for OSA-adapters exclusively usedUrsula Braun
Exclusive usage of OSA-cards has been introduced. Even though Linux does not make use of it, qeth should be prepared to receive a bad RC for some initialization steps. A meaningful message is now given, if an OSA-device is set online, even though the OSA-adapter is already exclusively used by another host. Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31qeth: crash during reboot after failing online settingUrsula Braun
Online setting of a qeth device may fail for instance because of: - out-of-memory condition when allocating qdio queues - IDX ACTIVATE problem - ... Such a device is still returned in a driver_for_each_device loop processed in qeth_reboot_event(), which calls qeth_clear_qdio_buffers(). Make sure qeth_clear_output_buffer() is called only, if the qdio queues have been successfully allocated during initialization of a qeth device. Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31qeth: Announce tx checksumming for qeth devices in TSO/EDDP modeFrank Blaschka
TSO requires tx checksumming. For non GSO frames in TSO/EDDP mode we have to manually calculate the checksum. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31qeth: dont return the return values of void functions.Heiko Carstens
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31qeth: enforce a rate limit for inbound scatter gather messagesFrank Blaschka
under memory pressure scatter gather mode switching messages must be rate limited. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31qeth: ungrouping a device must not be interruptibleUrsula Braun
Problem: A recovery thread must not be active when device is removed. In qeth_remove_device() an interruptible wait operation is used to wait until a qeth recovery thread is finished. If a user really interrupts the ungroup operation of a qeth device while a recovery is running, cio and qeth are out of sync (device already removed from cio, but kept in qeth). A following module unload of qeth results in a kernel OOPS here. Solution: Do not allow interruption of ungroup operation to guarantee finishing of a potentially running qeth recovery thread. Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31netxen: fix crashes during module unloaddhananjay@netxen.com
This patch fixes two problems during driver unload. The pci_disable_device() call is before firmware reload, causing reads and writes across PCI bus after disabling device. Second problem is the register window was wrong during firmware reload Signed-off by: Dhananjay Phadke <dhananjay@netxen.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31netxen: Avoid firmware load in PCI probedhananjay@netxen.com
Loading firmware during PCI probe can lead to incorrect initialization, rendering the card unusable until next reboot. This was introduced a while ago as a workaround for firmware bug, a better workaround was submitted for this a while ago. So removing original hack that loads firmware during probe. Signed-off by: Dhananjay Phadke <dhananjay@netxen.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31PS3: fix the bug that 'ifconfig down' would hangMasakazu Mokuno
Fix the bug that 'ifconfig eth0 down' would hang up, reported by Stefan Assmann <sassmann@suse.de>. As we removed netif_poll_enable() from dev->open(), we should not use netif_poll_disable() in dev->stop(). Signed-off-by: Masakazu Mokuno <mokuno@sm.sony.co.jp> CC: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31IOC3: Program UART predividers.Ralf Baechle
The IOC3 driver's UART detection bits used to rely on the the firmware setting the UART pre-divider in a way that's apropriate for the 8250 driver which doesn't currently program this register. This happens to work for the console but not rarely for additional ports. While at it, also program the UART to RS-232 PIO mode; it the UART might have been in mac-serial and/or DMA mode though that hasn't actually been observed in practice. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31[libata] Bump driver versionsJeff Garzik
Bump the versions for drivers that were modified, but had not already had a version number bump. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31i2c-piix4: Fix SB700 PCI device IDShane Huang
We find that SB700 and SB800 use the same SMBus device ID as SB600, which is 0x4385, instead of the already submitted 0x4395. Besides removing the wrong SB700 device ID, add SB800 support to kernel, by renaming the PCI_DEVICE_ID_ATI_IXP600_SMBUS into PCI_DEVICE_ID_ATI_SBX00_SMBUS. Signed-off-by: Shane Huang <shane.huang@amd.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-31Fix typo in atmel_spi.cAndrew Victor
Fix cut 'n paste bug in Atmel SPI driver. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Acked-by: David Brownell <david-b@pacbell.net> Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-31Fix modpost warning in serial driverRalf Baechle
This is triggered if PCI && !HOTPLUG. MODPOST vmlinux.o WARNING: vmlinux.o(.data+0xc910): Section mismatch: reference to .init.text:pci_ite887x_init (between 'pci_serial_quirks' and 'serial_pci_tbl') Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-31spi: correct name for spi_txx9Atsushi Nemoto
Correct the name of the spi_txx9 driver (and their in-tree user) instead of MODULE_ALIAS workaround. This would be preferable in the long term. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-31SPI driver hotplug/coldplug fixesDavid Brownell
Update various SPI drivers so they properly support - coldplug through "modprobe $(cat /sys/devices/.../modalias)" - hotplug through "modprobe $(MODALIAS)" The basic rule for platform, SPI, and (new style) I2C drivers is just to make sure that modprobing the driver name works. In this case, all the relevant drivers are platform drivers, and this patch either (a) Changes the driver name, if no in-tree code would break; this is simpler and thus preferable in the long term. (b) Adds MODULE_ALIAS directives, when in-tree platforms declare devices using the current driver name; less desirable. Most systems will link SPI controller drivers statically, but there's no point in being needlessly broken. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Jean Delvare <khali@linux-fr.org> Acked-by: Andrei Konovalov <akonovalov@ru.mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-31Fix font dependency for SGI Newport console driverRalf Baechle
We better select a font when the newport driver is a module or the user experience might suffer. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-31ata_piix: implement IOCFG bit18 quirkTejun Heo
Some notebooks need bit18 of IOCFG to be cleared for the drive bay to work even though the bit is NOOP according to the datasheet. This patch implement IOCFG bit18 quirk and apply it to Clevo M570U. http://bugzilla.kernel.org/show_bug.cgi?id=8051 Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: D. Angelis <dangelis@beta-cae.gr> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31libata: implement BROKEN_HPA horkage and apply it to affected drivesTejun Heo
Some drives choke on READ_NATIVE_MAX_ADDRESS[_EXT]. Implement ATA_HORKAGE_BROKEN_HPA and apply it to affected drives. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31sata_promise: FastTrack TX4200 is a second-generation chipMikael Pettersson
This patch corrects sata_promise to classify FastTrack TX4200 (DID 3515/3519) as a second-generation chip. Promise's partial- source FT TX4200 driver confirms this classification. Treating it as a first-generation chip causes several problems: 1. Detection failures. This is a recent regression triggered by the hotplug-enabling changes in 2.6.23-rc1. 2. Various "failed to resume link for reset" warnings. This patch fixes <http://bugzilla.kernel.org/show_bug.cgi?id=8936>. Thanks to Stephen Ziemba for reporting the bug and for testing the fix. Signed-off-by: Mikael Pettersson <mikpe@it.uu.se> Tested-by: Stephen Ziemba <sziemba@ecn.purdue.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31pata_marvell: Add more identifiersAlan Cox
This replaces the patch which incorrectly removed the 6145 Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31ata_piix: add Satellite U200 to broken suspend listTejun Heo
Satellite U200 also shares the problem. Add it to the broken suspend list. Original patch from John Schember. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: John Schember <john@nachtimwald.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31Merge branch 'master' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 * 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [PKTGEN]: Remove write-only variable. [NETFILTER]: xt_tcpudp: fix wrong struct in udp_checkentry [NET_SCHED] sch_prio.c: remove duplicate call of tc_classify() [BRIDGE]: Fix OOPS when bridging device without ethtool. [BRIDGE]: Packets leaking out of disabled/blocked ports. [TCP]: Allow minimum RTO to be configurable via routing metrics. SCTP: Fix to handle invalid parameter length correctly SCTP: Abort on COOKIE-ECHO if backlog is exceeded. SCTP: Correctly disable listening when backlog is 0. SCTP: Do not retransmit chunks that are newer then rtt. SCTP: Uncomfirmed transports can't become Inactive SCTP: Pick the correct port when binding to 0. SCTP: Use net_ratelimit to suppress error messages print too fast SCTP: Fix to encode PROTOCOL VIOLATION error cause correctly SCTP: Fix sctp_addto_chunk() to add pad with correct length SCTP: Assign stream sequence numbers to the entire message SCTP: properly clean up fragment and ordering queues during FWD-TSN. [PKTGEN]: Fix multiqueue oops. [BNX2]: Add write posting comment. [BNX2]: Use msleep().
2007-08-31ata_piix: IDE mode SATA patch for Intel TolapaiJason Gaston
Resend trying to remove 8-bit characters in the email. This patch adds the Intel Tolapai IDE mode SATA controller DID's. Signed-off-by: Jason Gaston <jason.d.gaston@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31libata-core: Allow translation setting to failAlan Cox
On some early drives (pre ATA1) this feature is not supported. If it fails then we know the drive geometry is the hardware geometry and the one we tried to set anyway so just carry on. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-30ACPI: EC: Check if boot_ec was really found in DSDTAlexey Starikovskiy
acpi_get_devices() returns success if it did not find any device. We have to check for this case. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Tested-by: Daniel Ritz <daniel.ritz-ml@swissonline.ch> Tested-by: Luca <kronos.it@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-30Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: psmouse - make dummy touchkit_ps2_detect() static Input: gscps2 - convert to use kzalloc Input: iforce - fix 'unused variable' warning Input: i8042 - fix retrun value of i8042_aux_test_irq Input: gpio_keys - remove duplicate includes
2007-08-30Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 4561/1: i.MX/MX1 GPIO parenthes omission and input setup fix [ARM] 4557/1: Fix PXA irq gpio initialization [ARM] 4551/1: s3c24xx: fix wrong virtual address offsets [ARM] 4552/1: i.MX/MX1 GPIO output setup fix [ARM] 4553/1: ARM at91: define FIQ_START [ARM] 4554/1: replace consistent_sync() with flush_ioremap_region() ARM: OMAP: Enable serial idling and wakeup features ARM: OMAP2: Force APLLs always active ARM: OMAP: H3 workqueue fixes ARM: OMAP: OSK led fixes ARM: OMAP: fix OMAP1 dmtimer build warning ARM: OMAP: Fix 32k timer unsupported one-shot mode
2007-08-30Fix lguest page-pinning logic ("lguest: bad stack page 0xc057a000")Rusty Russell
If the stack pointer is 0xc057a000, then the first stack page is at 0xc0579000 (the stack pointer is decremented before use). Not calculating this correctly caused guests with CONFIG_DEBUG_PAGEALLOC=y to be killed with a "bad stack page" message: the initial kernel stack was just proceeding the .smp_locks section which CONFIG_DEBUG_PAGEALLOC marks read-only when freeing. Thanks to Frederik Deweerdt for the bug report! Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>