Mark Lord [Fri, 2 May 2008 06:09:14 +0000 (02:09 -0400)]
sata_mv wait for empty+idle
When performing EH, it is recommended to wait for the EDMA engine
to empty out requests-in-progress before disabling EDMA.
Introduce code to poll the EDMA_STATUS register for idle/empty bits
before disabling EDMA. For non-EH operation, this will normally exit
without delay, other than the register read.
A later series of patches may focus on eliminating this and various
other register reads (when possible) throughout the driver,
but for now we're focussing on solid reliablity.
Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Mark Lord [Fri, 2 May 2008 06:08:32 +0000 (02:08 -0400)]
sata_mv pci features
Some of the GenIIe EDMA optimizations should not be used
for non-PCI (SOC) devices, and nor for certain configurations
of conventional PCI (non PCI-X, PCIe) buses.
Logic taken/simplified from that in the Marvell proprietary driver.
Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Mark Lord [Fri, 2 May 2008 06:07:51 +0000 (02:07 -0400)]
sata_mv more cosmetic changes
More cosmetic changes; no code changes.
-- try and improve consistency of naming.
-- add missing _OFS to tails of register offset definitions.
-- rename mv_setup_ifctl() to mv_setup_ifcfg(), since that's what it really does.
-- remove/move some dead comments
Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Tejun Heo [Thu, 1 May 2008 01:03:08 +0000 (10:03 +0900)]
ata_piix: verify SIDPR access before enabling it
On certain configurations (certain macbooks), even though all the
conditions for SIDPR access described in the datasheet are met,
actually reading those registers just returns 0 and have no effect on
write. Verify SIDPR is actually working before enabling it.
This is reported by Ryan Roth in bz#10512.
Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Ryan Roth <ryan.roth@ch2m.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Tejun Heo [Thu, 1 May 2008 14:41:41 +0000 (23:41 +0900)]
libata: improve post-reset device ready test
Some controllers (jmb and inic162x) use 0x77 and 0x7f to indicate that
the device isn't ready yet. It looks like they use 0xff if device
presence is detected but connection isn't established. 0x77 or 0x7f
after connection is established and use the value from signature FIS
after receiving it.
This patch implements ata_check_ready(), which takes TF status value
and determines whether the port is ready or not considering the above
and other conditions, and use it in @check_ready() functions. This is
safe as both 0x77 and 0x7f aren't valid ready status value even though
they have BSY bit cleared.
This fixes hot plug detection failures which can be triggered with
certain drives if they aren't already spun up when the data connector
is hot plugged.
Tested on sil, sil24, ahci (jmb/ich), piix and inic162x combined with
eight drives from all major vendors.
Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Linus Torvalds [Tue, 6 May 2008 00:31:41 +0000 (17:31 -0700)]
Merge branch 'for-linus' of 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:
mlx4_core: Support creation of FMRs with pages smaller than 4K
IB/ehca: Fix function return types
RDMA/cxgb3: Bump up the MPA connection setup timeout.
RDMA/cxgb3: Silently ignore close reply after abort.
RDMA/cxgb3: QP flush fixes
IB/ipoib: Fix transmit queue stalling forever
IB/mlx4: Fix off-by-one errors in calls to mlx4_ib_free_cq_buf()
Linus Torvalds [Tue, 6 May 2008 00:31:14 +0000 (17:31 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched-fixes
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched-fixes:
sched: default to n for GROUP_SCHED and FAIR_GROUP_SCHED
sched: add optional support for CONFIG_HAVE_UNSTABLE_SCHED_CLOCK
sched, x86: add HAVE_UNSTABLE_SCHED_CLOCK
sched: fix cpu clock
sched: fair-group: fix a Div0 error of the fair group scheduler
sched: fix missing locking in sched_domains code
sched: make clock sync tunable by architecture code
sched: fix debugging
sched: fix sched_info_switch not being called according to documentation
sched: fix hrtick_start_fair and CPU-Hotplug
sched: fix SCHED_FAIR wake-idle logic error
sched: fix RT task-wakeup logic
sched: add statics, don't return void expressions
sched: add debug checks to idle functions
sched: remove old sched doc
sched: make rt_sched_class, idle_sched_class static
sched: optimize calc_delta_mine()
sched: fix normalized sleeper
Oren Duer [Mon, 5 May 2008 22:56:52 +0000 (15:56 -0700)]
mlx4_core: Support creation of FMRs with pages smaller than 4K
Don't hard code a test against a minimum page shift of 12, since the
device may support smaller pages. Test against the actual smallest
page size from the device capabilities.
Signed-off-by: Oren Duer <oren@mellanox.co.il> Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Commit 06916639e2fed9ee475efef2747a1b7429f8fe76 ("driver-core: add
dev_name() to help transition away from using bus_id") added a static
inline dev_name() and used it in dev_printk.
Unfortunately, drivers/edac/edac_core.h defines a macro called
dev_name(). Rename the latter.
David Miller pointed it out that nothing in cpu_clock() sets
prev_cpu_time. This caused __sync_cpu_clock() to be called
all the time - against the intention of this code.
The result was that in practice we hit a global spinlock every
time cpu_clock() is called - which - even though cpu_clock()
is used for tracing and debugging, is suboptimal.
While at it, also:
- move the irq disabling to the outest layer,
this should make cpu_clock() warp-free when called with irqs
enabled.
- use long long instead of cycles_t - for platforms where cycles_t
is 32-bit.
Reported-by: David Miller <davem@davemloft.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
When the echoed value was less than the number of processores, the result of the
sentence "shares/nr_cpu_ids" was 0, and then the system called div64() to divide
the result, the Div0 error occured.
It is unnecessary that the shares value is divided by nr_cpu_ids, I think.
Because in the function __update_group_shares_cpu() and init_tg_cfs_entry(),
the shares value isn't divided by nr_cpu_ids when setting shares of the sched
entity.
This patch fixes this bug. And echoing ULONG_MAX value into cpu.shares also
causes Div0 error, so we set a macro MAX_SHARES to limit the max value of
shares.
Concurrent calls to detach_destroy_domains and arch_init_sched_domains
were prevented by the old scheduler subsystem cpu hotplug mutex. When
this got converted to get_online_cpus() the locking got broken.
Unlike before now several processes can concurrently enter the critical
sections that were protected by the old lock.
So use the already present doms_cur_mutex to protect these sections again.
Cc: Gautham R Shenoy <ego@in.ibm.com> Cc: Paul Jackson <pj@sgi.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Peter Zijlstra [Tue, 29 Apr 2008 08:02:46 +0000 (10:02 +0200)]
sched: fix hrtick_start_fair and CPU-Hotplug
Gautham R Shenoy reported:
> While running the usual CPU-Hotplug stress tests on linux-2.6.25,
> I noticed the following in the console logs.
>
> This is a wee bit difficult to reproduce. In the past 10 runs I hit this
> only once.
>
> ------------[ cut here ]------------
>
> WARNING: at kernel/sched.c:962 hrtick+0x2e/0x65()
>
> Just wondering if we are doing a good job at handling the cancellation
> of any per-cpu scheduler timers during CPU-Hotplug.
This looks like its indeed not cancelled at all and migrates the it to
another cpu. Fix it via a proper hotplug notifier mechanism.
Reported-by: Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: stable@kernel.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
We currently use an optimization to skip the overhead of wake-idle
processing if more than one task is assigned to a run-queue. The
assumption is that the system must already be load-balanced or we
wouldnt be overloaded to begin with.
The problem is that we are looking at rq->nr_running, which may include
RT tasks in addition to CFS tasks. Since the presence of RT tasks
really has no bearing on the balance status of CFS tasks, this throws
the calculation off.
This patch changes the logic to only consider the number of CFS tasks
when making the decision to optimze the wake-idle.
Dmitry Adamushko pointed out a logic error in task_wake_up_rt() where we
will always evaluate to "true". You can find the thread here:
http://lkml.org/lkml/2008/4/22/296
In reality, we only want to try to push tasks away when a wake up request is
not going to preempt the current task. So lets fix it.
Note: We introduce test_tsk_need_resched() instead of open-coding the flag
check so that the merge-conflict with -rt should help remind us that we
may need to support NEEDS_RESCHED_DELAYED in the future, too.
Harvey Harrison [Fri, 25 Apr 2008 01:17:55 +0000 (18:17 -0700)]
sched: add statics, don't return void expressions
Noticed by sparse:
kernel/sched.c:760:20: warning: symbol 'sched_feat_names' was not declared. Should it be static?
kernel/sched.c:767:5: warning: symbol 'sched_feat_open' was not declared. Should it be static?
kernel/sched_fair.c:845:3: warning: returning void-valued expression
kernel/sched.c:4386:3: warning: returning void-valued expression
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Peter Zijlstra [Mon, 5 May 2008 21:56:17 +0000 (23:56 +0200)]
sched: optimize calc_delta_mine()
Joel noticed that the !lw->inv_weight contition isn't unlikely anymore so
remove the unlikely annotation. Also, remove the two div64_u64() inv_weight
calculations, which makes them rely on the calc_delta_mine() path as well.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> CC: Joel Schopp <jschopp@austin.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Linus Torvalds [Mon, 5 May 2008 19:39:10 +0000 (12:39 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
x86 PCI: call dmi_check_pciprobe()
x86/pci: add pci=skip_isa_align command lines.
x86/pci: remove flag in pci_cfg_space_size_ext
x86: fix section mismatch in pci_scan_bus
Linus Torvalds [Mon, 5 May 2008 17:17:30 +0000 (10:17 -0700)]
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb:
kgdb: kconfig fix xconfig/menuconfig element
kgdb: fix signedness mixmatches, add statics, add declaration to header
kgdb: 1000 loops for the single step test in kgdbts
kgdb: trivial sparse fixes in kgdb test-suite
kgdb: minor documentation fixes
Yinghai Lu [Mon, 14 Apr 2008 22:40:37 +0000 (15:40 -0700)]
x86 PCI: call dmi_check_pciprobe()
this change:
| commit 08f1c192c3c32797068bfe97738babb3295bbf42
| Author: Muli Ben-Yehuda <muli@il.ibm.com>
| Date: Sun Jul 22 00:23:39 2007 +0300
|
| x86-64: introduce struct pci_sysdata to facilitate sharing of ->sysdata
|
| This patch introduces struct pci_sysdata to x86 and x86-64, and
| converts the existing two users (NUMA, Calgary) to use it.
|
| This lays the groundwork for having other users of sysdata, such as
| the PCI domains work.
|
| The Calgary bits are tested, the NUMA bits just look ok.
replaces pcibios_scan_root with pci_scan_bus_parented...
but in pcibios_scan_root we have a DMI check:
dmi_check_system(pciprobe_dmi_table);
when when have several peer root buses this could be called multiple
times (which is bad), so move that call to pci_access_init().
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Eric Sesterhenn [Fri, 25 Jan 2008 09:40:46 +0000 (10:40 +0100)]
Removal of FUTEX_FD
Since FUTEX_FD was scheduled for removal in June 2007 lets remove it.
Google Code search found no users for it and NGPT was abandoned in 2003
according to IBM. futex.h is left untouched to make sure the id does
not get reassigned. Since queue_me() has no users left it is commented
out to avoid a warning, i didnt remove it completely since it is part of
the internal api (matching unqueue_me())
Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (removed rest) Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Harvey Harrison [Thu, 24 Apr 2008 21:57:23 +0000 (16:57 -0500)]
kgdb: fix signedness mixmatches, add statics, add declaration to header
Noticed by sparse:
arch/x86/kernel/kgdb.c:556:15: warning: symbol 'kgdb_arch_pc' was not declared. Should it be static?
kernel/kgdb.c:149:8: warning: symbol 'kgdb_do_roundup' was not declared. Should it be static?
kernel/kgdb.c:193:22: warning: symbol 'kgdb_arch_pc' was not declared. Should it be static?
kernel/kgdb.c:712:5: warning: symbol 'remove_all_break' was not declared. Should it be static?
Related to kgdb_hex2long:
arch/x86/kernel/kgdb.c:371:28: warning: incorrect type in argument 2 (different signedness)
arch/x86/kernel/kgdb.c:371:28: expected long *long_val
arch/x86/kernel/kgdb.c:371:28: got unsigned long *<noident>
kernel/kgdb.c:469:27: warning: incorrect type in argument 2 (different signedness)
kernel/kgdb.c:469:27: expected long *long_val
kernel/kgdb.c:469:27: got unsigned long *<noident>
kernel/kgdb.c:470:27: warning: incorrect type in argument 2 (different signedness)
kernel/kgdb.c:470:27: expected long *long_val
kernel/kgdb.c:470:27: got unsigned long *<noident>
kernel/kgdb.c:894:27: warning: incorrect type in argument 2 (different signedness)
kernel/kgdb.c:894:27: expected long *long_val
kernel/kgdb.c:894:27: got unsigned long *<noident>
kernel/kgdb.c:895:27: warning: incorrect type in argument 2 (different signedness)
kernel/kgdb.c:895:27: expected long *long_val
kernel/kgdb.c:895:27: got unsigned long *<noident>
kernel/kgdb.c:1127:28: warning: incorrect type in argument 2 (different signedness)
kernel/kgdb.c:1127:28: expected long *long_val
kernel/kgdb.c:1127:28: got unsigned long *<noident>
kernel/kgdb.c:1132:25: warning: incorrect type in argument 2 (different signedness)
kernel/kgdb.c:1132:25: expected long *long_val
kernel/kgdb.c:1132:25: got unsigned long *<noident>
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Jason Wessel [Thu, 24 Apr 2008 21:57:23 +0000 (16:57 -0500)]
kgdb: 1000 loops for the single step test in kgdbts
The single step test is not terribly costly and it should be able to
pass at 1000 loops successfully in under 1 second. A non-kgdb timing
regression was found using this test, but it did not occur frequently
because by default the test was only executed a single time.
This patch changes the default for the single step test to 1000
iterations and allows for individual configuration of the single step
test to further exercise the kgdb subsystem when needed.
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Harvey Harrison [Thu, 24 Apr 2008 21:57:23 +0000 (16:57 -0500)]
kgdb: trivial sparse fixes in kgdb test-suite
Shadowed variable and integer as NULL pointer fixes:
drivers/misc/kgdbts.c:877:6: warning: symbol 'sys_open_test' shadows an earlier one
drivers/misc/kgdbts.c:537:27: originally declared here
drivers/misc/kgdbts.c:378:22: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:386:22: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:468:30: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:472:15: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:502:30: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:506:30: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:509:30: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:523:20: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:527:20: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:530:15: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:541:21: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:545:21: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:548:15: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:559:30: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:563:15: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:573:16: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:574:19: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:578:15: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:588:16: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:589:19: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:593:15: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:602:16: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:604:15: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:925:3: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:938:3: warning: Using plain integer as NULL pointer
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Takashi Iwai [Sat, 3 May 2008 16:46:56 +0000 (18:46 +0200)]
[ALSA] ac97 - Add a workaround for broken quirk for VT1617A codec
On boards with VT1617A codec, the sound disappears suddenly.
This looks like a problem with HPE-bit control that is supposed to be
set in patch_vt1617a(). However, on such problematic hardwares, the
bit is actually reset mysteriously.
Takashi Iwai [Fri, 2 May 2008 10:31:51 +0000 (12:31 +0200)]
[ALSA] fm801 - Fix kconfig dependency mess of fm801-tea575x
FM801-tea575x tuner has a reverse selection to V4L1 and this causes
nasty dependency problems.
The patch simplifies the dependency with a normal
"depends on VIDEO_V4L1". This decreases the usability but fixes bugs,
yeah. If any better feature like "requires" is introduced to kbuild
in future, we'll be able to switch it...
Denis V. Lunev [Fri, 2 May 2008 20:34:05 +0000 (06:34 +1000)]
[POWERPC] Assign PDE->data before gluing PDE into /proc tree
Simply replace proc_create and further data assigned with proc_create_data.
No need to check for data!=NULL after that.
Signed-off-by: Denis V. Lunev <den@openvz.org> Cc: Alexey Dobriyan <adobriyan@openvz.org> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Emil Medve [Fri, 2 May 2008 20:34:04 +0000 (06:34 +1000)]
[POWERPC] devres: Add devm_ioremap_prot()
We provide an ioremap_flags, so this provides a corresponding
devm_ioremap_prot. The slight name difference is at Ben
Herrenschmidt's request as he plans on changing ioremap_flags to
ioremap_prot in the future.
Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Tejun Heo <htejun@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Daniel Walker [Fri, 2 May 2008 20:34:03 +0000 (06:34 +1000)]
[POWERPC] macintosh: ADB driver: adb_handler_sem semaphore to mutex
Signed-off-by: Daniel Walker <dwalker@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Daniel Walker [Fri, 2 May 2008 20:34:02 +0000 (06:34 +1000)]
[POWERPC] macintosh: windfarm_smu_sat: semaphore to mutex
Signed-off-by: Daniel Walker <dwalker@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Daniel Walker [Fri, 2 May 2008 20:34:01 +0000 (06:34 +1000)]
[POWERPC] macintosh: therm_pm72: driver_lock semaphore to mutex
Signed-off-by: Daniel Walker <dwalker@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes:
kconfig-language.txt: remove bogus hint
kconfig: fix MAC OS X warnings in menuconfig
modpost: i2c aliases need no trailing wildcard
Linus Torvalds [Mon, 5 May 2008 00:07:28 +0000 (17:07 -0700)]
Merge branch 'kvm-updates-2.6.26' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm
* 'kvm-updates-2.6.26' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm:
x86: KVM geust: make setup_secondary_clock definition dependent on local apic
KVM: MMU: Allow more than PAGES_PER_HPAGE write protections per large page
KVM: avoid fx_init() schedule in atomic
KVM: Avoid spurious execeptions after setting registers
KVM: PIT: support mode 4
KVM: x86 emulator: disable writeback on lmsw
KVM: ppc: deliver INTERRUPT_FP_UNAVAIL to the guest
KVM: ppc: Handle guest idle by emulating MSR[WE] writes
KVM: x86: task switch: fix wrong bit setting for the busy flag
KVM: VMX: Enable EPT feature for KVM
KVM: VMX: Prepare an identity page table for EPT in real mode
KVM: Export necessary function for EPT
KVM: MMU: Remove #ifdef CONFIG_X86_64 to support 4 level EPT
KVM: MMU: Add EPT support
KVM: Add kvm_x86_ops get_tdp_level()
KVM: MMU: Move some definitions to a header file
KVM: VMX: EPT Feature Detection
Ingo Molnar [Sun, 4 May 2008 07:29:43 +0000 (09:29 +0200)]
sysfs: build fix
x86.git testing found the following build failure on v2.6.26-rc1:
In file included from include/linux/kobject.h:22,
from include/linux/module.h:17,
from include/linux/crypto.h:22,
from arch/x86/kernel/asm-offsets_32.c:8,
from arch/x86/kernel/asm-offsets.c:3:
include/linux/sysfs.h:201: error: redefinition of 'sysfs_update_group'
include/linux/sysfs.h:195: error: previous definition of 'sysfs_update_group' was here
make[1]: *** [arch/x86/kernel/asm-offsets.s] Error 1
make: *** [prepare0] Error 2
the reason for the build failure is the duplicate definition of the
sysfs_update_group() inline function in include/linux/sysfs.h.
The duplication was a merge error: it was added via -mm by commit v2.6.25-7262-g2850699, "sysfs: sysfs_update_group stub for
CONFIG_SYSFS=n" a day before v2.6.26-rc1, but a day before that the same
commit was already merged upstream via the sysfs tree, with commit v2.6.25-7211-g1cbfb7a.
Linus Torvalds [Mon, 5 May 2008 00:04:16 +0000 (17:04 -0700)]
Make forced module loading optional
The kernel module loader used to be much too happy to allow loading of
modules for the wrong kernel version by default. For example, if you
had MODVERSIONS enabled, but tried to load a module with no version
info, it would happily load it and taint the kernel - whether it was
likely to actually work or not!
Generally, such forced module loading should be considered a really
really bad idea, so make it conditional on a new config option
(MODULE_FORCE_LOAD), and make it default to off.
If somebody really wants to force module loads, that's their problem,
but we should not encourage it. Especially as it happened to me by
mistake (ie regular unversioned Fedora modules getting loaded) causing
lots of strange behavior.
Adrian Bunk [Sat, 3 May 2008 19:26:17 +0000 (22:26 +0300)]
fix asm-mips/types.h syntax error
This patch fixes the following compile error caused by
commit 23cf11ddb5099f8c7f7cb3eb154bff0faf31cae9
(mips: types: use <asm-generic/int-*.h> for the mips architecture):
<-- snip -->
...
CC kernel/bounds.s
In file included from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/types.h:12,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/page-flags.h:8,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/kernel/bounds.c:9:
include2/asm/types.h:56:2: error: #endif without #if
make[2]: *** [kernel/bounds.s] Error 1
<-- snip -->
Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Adrian Bunk [Sat, 3 May 2008 20:51:03 +0000 (23:51 +0300)]
fix asm-alpha/types.h breakage
This patch fixes the following compile error on alpha caused by
commit 3726c23df8e4d95b6f2b335dfa90e3f4850a8a00
(alpha: types: use <asm-generic/int-*.h> for the alpha architecture):
<-- snip -->
...
CC arch/alpha/kernel/asm-offsets.s
In file included from include2/asm/topology.h:6,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/topology.h:34,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/mmzone.h:683,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/gfp.h:4,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/slab.h:12,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/percpu.h:5,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/rcupdate.h:39,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/pid.h:4,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/sched.h:74,
from /home/bunk/linux/kernel-2.6/git/linux-2.6/arch/alpha/kernel/asm-offsets.c:9:
include2/asm/machvec.h:44: error: expected declaration specifiers or '...' before 'dma_addr_t'
include2/asm/machvec.h:44: error: expected declaration specifiers or '...' before 'dma_addr_t'
In file included from /home/bunk/linux/kernel-2.6/git/linux-2.6/arch/alpha/kernel/asm-offsets.c:12:
include2/asm/io.h:94: warning: type defaults to 'int' in declaration of 'dma_addr_t'
include2/asm/io.h:94: warning: variable 'dma_addr_t' declared 'inline'
include2/asm/io.h:94: error: expected ',' or ';' before 'isa_page_to_bus'
make[2]: *** [arch/alpha/kernel/asm-offsets.s] Error 1
<-- snip -->
Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Rusty Russell [Fri, 2 May 2008 11:14:20 +0000 (21:14 +1000)]
x86: fix up bootparam.h for userspace inclusion
commit 8b664aa66e824a0ddf4ec56d41fa0cf7bb374de6 (x86, boot: add linked
list of struct setup_data) put a new struct in bootparam.h, but didn't
use the userspace-safe types.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Huang Ying <ying.huang@intel.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ben [Sat, 3 May 2008 20:39:42 +0000 (22:39 +0200)]
x86: remove dell reboot dmi quirk board name match
http://bugzilla.kernel.org/show_bug.cgi?id=10547
Newer Dell OptiPlex 745s hang before rebooting after 'sudo reboot'.
A patch for some versions of the OptiPlex was proposed here --
http://lkml.org/lkml/2007/6/5/59 -- and is included in 2.6.23 and
later kernels, according to
http://lxr.linux.no/linux+v2.6.23/arch/i386/kernel/reboot.c . However,
the DMI_BOARD_NAME ("0WF810") is too restrictive. Newer OptiPlex
machines have a DMI_BOARD_NAME of "0RF703". I therefore suggest
adding another clause to reboot.c, similar to the one in the original
patch, but matching a DMI_BOARD_NAME of "0RF703".
On further inspection, it seems that there are other DMI_BOARD_NAMEs
for this same machine. They seem to change from time to time, which
means that the current code is fragile. Moreover, using bios reboot
should not break non-SFF OptiPlex 745s, and so a reasonable fix is to
simply drop the match on DMI_BOARD_NAME.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Sam Ravnborg [Thu, 1 May 2008 09:31:07 +0000 (11:31 +0200)]
kbuild, suspend, x86: fix rebuild of wakeup.bin
In kernel/acpi/realmode/Makefile use the 'always'
variable to say that wakeup.bin should always
be made.
In acpi/Makefile we then do not need to specify the
requested target and we avoid the message from make:
`arch/x86/kernel/acpi/realmode/wakeup.bin' is up to date.
Add wakeup.lds to list af targets to avoid rebuilding
wakeup.bin - from Roland McGrath.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Rafael J. Wysocki <rjw@sisk.pl> Cc: Pavel Machek <pavel@suse.cz> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Fri, 2 May 2008 19:24:30 +0000 (21:24 +0200)]
x86: undo visws/numaq build changes
arch/x86/pci/Makefile_32 has a nasty detail. VISWS and NUMAQ build
override the generic pci-y rules. This needs a proper cleanup, but
that needs more thoughts. Undo
This make sure not to schedule in atomic during fx_init. I also
changed the name of fpu_init to fx_finit to avoid duplicating the name
with fpu_init that is already used in the kernel, this makes grep
simpler if nothing else.
Signed-off-by: Andrea Arcangeli <andrea@qumranet.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Jan Kiszka [Wed, 30 Apr 2008 15:59:04 +0000 (17:59 +0200)]
KVM: Avoid spurious execeptions after setting registers
Clear pending exceptions when setting new register values. This avoids
spurious exceptions after restoring a vcpu state or after
reset-on-triple-fault.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
The in-kernel PIT emulation ignores pending timers if operating under
mode 4, which for example DragonFlyBSD uses (and Plan9 too, apparently).
Mode 4 seems to be similar to one-shot mode, other than the fact that it
starts counting after the next CLK pulse once programmed, while mode 1
starts counting immediately, so add a FIXME to enhance precision.
Avi Kivity [Wed, 30 Apr 2008 13:13:36 +0000 (16:13 +0300)]
KVM: x86 emulator: disable writeback on lmsw
The recent changes allowing memory operands with lmsw and smsw left
lmsw with writeback enabled. Since lmsw has no oridinary destination
operand, the dst pointer was not initialized, resulting in an oops.
KVM: ppc: deliver INTERRUPT_FP_UNAVAIL to the guest
This patch adds the delivery of INTERRUPT_FP_UNAVAIL exceptions to the guest.
It's needed if a guest uses ppc binaries using the Floating point instructions.
Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> Acked-by: Hollis Blanchard <hollisb@us.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
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