Commit Graph

2024 Commits

Author SHA1 Message Date
Jes Sorensen
0c72ea7fb8 KVM: ia64: Map in SN2 RTC registers to the VMM module
On SN2, map in the SN2 RTC registers to the VMM module, needed for ITC
emulation.

Signed-off-by: Jes Sorensen <jes@sgi.com>
Acked-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-06-10 11:48:28 +03:00
Gleb Natapov
58c2dde17d KVM: APIC: get rid of deliver_bitmask
Deliver interrupt during destination matching loop.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Acked-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2009-06-10 11:48:27 +03:00
Gleb Natapov
e1035715ef KVM: change the way how lowest priority vcpu is calculated
The new way does not require additional loop over vcpus to calculate
the one with lowest priority as one is chosen during delivery bitmap
construction.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2009-06-10 11:48:27 +03:00
Gleb Natapov
343f94fe4d KVM: consolidate ioapic/ipi interrupt delivery logic
Use kvm_apic_match_dest() in kvm_get_intr_delivery_bitmask() instead
of duplicating the same code. Use kvm_get_intr_delivery_bitmask() in
apic_send_ipi() to figure out ipi destination instead of reimplementing
the logic.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2009-06-10 11:48:27 +03:00
Gleb Natapov
6da7e3f643 KVM: APIC: kvm_apic_set_irq deliver all kinds of interrupts
Get rid of ioapic_inj_irq() and ioapic_inj_nmi() functions.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2009-06-10 11:48:26 +03:00
Yang Zhang
3f5e06f879 KVM: ia64: fix compilation error in kvm_get_lowest_prio_vcpu
Modify the arg of kvm_get_lowest_prio_vcpu().
Make it consistent with its declaration.

Signed-off-by: Yang Zhang <yang.zhang@intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2009-06-10 11:48:25 +03:00
Luck, Tony
008fe148cb intel-iommu: Fix one last ia64 build problem in Pass Through Support
On ia64 with CONFIG_DMAR=n and CONFIG_SWIOTLB=y (as used in
arch/ia64/configs/tiger_defconfig) there is still a link
error with iommu_pass_through listed as an undefined symbol:

arch/ia64/kernel/built-in.o: In function `pci_swiotlb_init':
(.init.text+0x7f70): undefined reference to `iommu_pass_through'

Fix it by #defining iommu_pass_through away in asm/iommu.h

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-06-05 20:49:53 +01:00
Ingo Molnar
6cda3eb62e Merge branch 'x86/apic' into irq/numa
Merge reason: both topics modify the APIC code but were able to do it in
              parallel so far. An upcoming patch generates a conflict so
              merge them to avoid the conflict.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-05-12 12:17:36 +02:00
Jan Beulich
0692698cb7 [IA64] xen_domu_defconfig: fix build issues/warnings
- drivers/xen/events.c did not compile
- xen_setup_hook caused a modpost section warning
- the use of u64 (instead of unsigned long long) together with a %llu
  in drivers/xen/balloon.c caused a compiler warning

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-05-05 11:43:13 -07:00
Fenghua Yu
aed5d5f4c5 Fix !CONFIG_DMAR build failure introduced by Intel IOMMU Pass Through Support
This updated patch should fix the compiling errors and remove the extern
iommu_pass_through from drivers/pci/intel-iommu.c file.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-05-01 16:44:47 +01:00
Fenghua Yu
4ed0d3e6c6 Intel IOMMU Pass Through Support
The patch adds kernel parameter intel_iommu=pt to set up pass through
mode in context mapping entry. This disables DMAR in linux kernel; but
KVM still runs on VT-d and interrupt remapping still works.

In this mode, kernel uses swiotlb for DMA API functions but other VT-d
functionalities are enabled for KVM. KVM always uses multi level
translation page table in VT-d. By default, pass though mode is disabled
in kernel.

This is useful when people don't want to enable VT-d DMAR in kernel but
still want to use KVM and interrupt remapping for reasons like DMAR
performance concern or debug purpose.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Acked-by: Weidong Han <weidong@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-04-29 06:54:34 +01:00
Yinghai Lu
a2f809b08a irq: change ACPI GSI APIs to also take a device argument
We want to use dev_to_node() later on, to be aware of the 'home node'
of the GSI in question.

[ Impact: cleanup, prepare the IRQ code to be more NUMA aware ]

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: Len Brown <lenb@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Len Brown <lenb@kernel.org>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-acpi@vger.kernel.org
Cc: linux-ia64@vger.kernel.org
LKML-Reference: <49F65560.20904@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-28 12:21:17 +02:00
Yinghai Lu
d5dedd4507 irq: change ->set_affinity() to return status
according to Ingo, change set_affinity() in irq_chip should return int,
because that way we can handle failure cases in a much cleaner way, in
the genirq layer.

v2: fix two typos

[ Impact: extend API ]

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: linux-arch@vger.kernel.org
LKML-Reference: <49F654E9.4070809@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-28 12:21:16 +02:00
Jes Sorensen
d24d2c1cc4 KVM: ia64: fix locking order entering guest
Reorder locking as down_read() may return with local interrupts enabled,
which means we could go into vti_vcpu_run() with interrupts enabled.

This caused random crashes on the Altix as the timer interrupt tried
to read a memory mapped clock source, for which the TLB had not yet been
reinstated in the exit, before ipsr was retored.

Signed-off-by: Jes Sorensen <jes@sgi.com>
Acked-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-04-22 13:52:09 +03:00
David Howells
9b8de7479d FRV: Fix the section attribute on UP DECLARE_PER_CPU()
In non-SMP mode, the variable section attribute specified by DECLARE_PER_CPU()
does not agree with that specified by DEFINE_PER_CPU().  This means that
architectures that have a small data section references relative to a base
register may throw up linkage errors due to too great a displacement between
where the base register points and the per-CPU variable.

On FRV, the .h declaration says that the variable is in the .sdata section, but
the .c definition says it's actually in the .data section.  The linker throws
up the following errors:

kernel/built-in.o: In function `release_task':
kernel/exit.c:78: relocation truncated to fit: R_FRV_GPREL12 against symbol `per_cpu__process_counts' defined in .data section in kernel/built-in.o
kernel/exit.c:78: relocation truncated to fit: R_FRV_GPREL12 against symbol `per_cpu__process_counts' defined in .data section in kernel/built-in.o

To fix this, DECLARE_PER_CPU() should simply apply the same section attribute
as does DEFINE_PER_CPU().  However, this is made slightly more complex by
virtue of the fact that there are several variants on DEFINE, so these need to
be matched by variants on DECLARE.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-21 19:39:59 -07:00
Magnus Damm
8e19608e8b clocksource: pass clocksource to read() callback
Pass clocksource pointer to the read() callback for clocksources.  This
allows us to share the callback between multiple instances.

[hugh@veritas.com: fix powerpc build of clocksource pass clocksource mods]
[akpm@linux-foundation.org: cleanup]
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: John Stultz <johnstul@us.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-21 13:41:47 -07:00
Isaku Yamahata
05f0ecbda5 [IA64] fix allmodconfig compilation breakage.
This patch fixes the following compilation error caused by recursive
inclusion of kernel.h which defines BUILD_BUG_ON().
In this case, the case it catches will be caught by the case
CONFIG_PARAVIRT=n, so removing it would not hurt compile time check
very much. So fix the breakage by removing it.

  CC      arch/ia64/kernel/asm-offsets.s
In file included from include/linux/bitops.h:17,
                 from include/linux/kernel.h:15,
                 from include/linux/sched.h:52,
                 from arch/ia64/kernel/asm-offsets.c:9:
arch/ia64/include/asm/bitops.h: In function 'set_bit':
arch/ia64/include/asm/bitops.h:47: error: implicit declaration of function 'BUILD_BUG_ON'

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-04-20 09:46:29 -07:00
Dimitri Sivanich
edb91dc01a [IA64] smp_flush_tlb_mm() should only send IPI's to cpus in cpu_vm_mask
Having flush_tlb_mm->smp_flush_tlb_mm() send an IPI to every cpu
on the system is occasionally triggering spin_lock contention in
generic_smp_call_function_interrupt().

Follow x86 arch's lead and only sends IPIs to the cpus in mm->cpu_vm_mask.

Experiments with this change have shown significant improvement in this
contention issue.

Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-04-16 11:51:35 -07:00
Marcelo Tosatti
c4cb768f02 [IA64] export smp_send_reschedule
KVM will use smp_send_reschedule to force a cpu out of guest mode.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-04-16 11:48:49 -07:00
Yang Hongyang
e930438c42 Replace all DMA_nBIT_MASK macro with DMA_BIT_MASK(n)
This is the second go through of the old DMA_nBIT_MASK macro,and there're not
so many of them left,so I put them into one patch.I hope this is the last round.
After this the definition of the old DMA_nBIT_MASK macro could be removed.

Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Tony Lindgren <tony@atomide.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Greg KH <greg@kroah.com>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-13 15:04:33 -07:00
Tony Luck
8851d3712a [IA64] wire up preadv/pwritev system calls
Gerd Hoffmann added these to Linux.  Let ia64 use them.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-04-08 13:46:14 -07:00
Yang Hongyang
2f4f27d42a dma-mapping: replace all DMA_24BIT_MASK macro with DMA_BIT_MASK(24)
Replace all DMA_24BIT_MASK macro with DMA_BIT_MASK(24)

Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07 08:31:12 -07:00
Yang Hongyang
284901a90a dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32)
Replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32)

Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07 08:31:11 -07:00
Yang Hongyang
50cf156af7 dma-mapping: replace all DMA_40BIT_MASK macro with DMA_BIT_MASK(40)
Replace all DMA_40BIT_MASK macro with DMA_BIT_MASK(40)

Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07 08:31:10 -07:00
Yang Hongyang
6a35528a83 dma-mapping: replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64)
Replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64)

Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07 08:31:10 -07:00
Linus Torvalds
714f83d5d9 Merge branch 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (413 commits)
  tracing, net: fix net tree and tracing tree merge interaction
  tracing, powerpc: fix powerpc tree and tracing tree interaction
  ring-buffer: do not remove reader page from list on ring buffer free
  function-graph: allow unregistering twice
  trace: make argument 'mem' of trace_seq_putmem() const
  tracing: add missing 'extern' keywords to trace_output.h
  tracing: provide trace_seq_reserve()
  blktrace: print out BLK_TN_MESSAGE properly
  blktrace: extract duplidate code
  blktrace: fix memory leak when freeing struct blk_io_trace
  blktrace: fix blk_probes_ref chaos
  blktrace: make classic output more classic
  blktrace: fix off-by-one bug
  blktrace: fix the original blktrace
  blktrace: fix a race when creating blk_tree_root in debugfs
  blktrace: fix timestamp in binary output
  tracing, Text Edit Lock: cleanup
  tracing: filter fix for TRACE_EVENT_FORMAT events
  ftrace: Using FTRACE_WARN_ON() to check "freed record" in ftrace_release()
  x86: kretprobe-booster interrupt emulation code fix
  ...

Fix up trivial conflicts in
 arch/parisc/include/asm/ftrace.h
 include/linux/memory.h
 kernel/extable.c
 kernel/module.c
2009-04-05 11:04:19 -07:00
Robin Holt
2d09cde985 ia64: implement interrupt-enabling rwlocks
Implement __raw_read_lock_flags and __raw_write_lock_flags for the ia64
architecture.

[kosaki.motohiro@jp.fujitsu.com: typo fix]
Signed-off-by: Petr Tesarik <ptesarik@suse.cz>
Signed-off-by: Robin Holt <holt@sgi.com>
Cc: <linux-arch@vger.kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-02 19:05:11 -07:00
Robin Holt
f5f7eac41d Allow rwlocks to re-enable interrupts
Pass the original flags to rwlock arch-code, so that it can re-enable
interrupts if implemented for that architecture.

Initially, make __raw_read_lock_flags and __raw_write_lock_flags stubs
which just do the same thing as non-flags variants.

Signed-off-by: Petr Tesarik <ptesarik@suse.cz>
Signed-off-by: Robin Holt <holt@sgi.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: <linux-arch@vger.kernel.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-02 19:05:11 -07:00
Robin Holt
1bc4faa59b sgi-gru: remove SGI_GRU as a valid config option for ia64 configs with SGI_UV
Some current configs turn on GRU for ia64.  The GRU code does not
correctly load on boot on ia64 (GRU does continue to work for x86-64), so
changing the IA64 Kconfig to not select GRU on ia64 configs for now until
we have time to fix.

Signed-off-by: Robin Holt <holt@sgi.com>
Acked-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-02 19:05:07 -07:00
Jack Steiner
66666e50fc sgi-gru: add macros for using the UV hub to send interrupts
Add macros for using the UV hub to send interrupts.  Change the IPI code
to use these macros.  These macros will also be used in additional patches
that will follow.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-02 19:05:05 -07:00
Jack Steiner
c7296700ed sgi-gru: add definitions of ia64 GRU MMRs
Add definitions for IA64 GRU MMRs.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-02 19:05:05 -07:00
Alexey Dobriyan
6f2c55b843 Simplify copy_thread()
First argument unused since 2.3.11.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-02 19:04:51 -07:00
Ingo Molnar
8302294f43 Merge branch 'tracing/core-v2' into tracing-for-linus
Conflicts:
	include/linux/slub_def.h
	lib/Kconfig.debug
	mm/slob.c
	mm/slub.c
2009-04-02 00:49:02 +02:00
Linus Torvalds
8b53ef33d9 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: (29 commits)
  [IA64] BUG to BUG_ON changes
  [IA64] Fix typo/thinko in arch/ia64/sn/kernel/sn2/sn2_smp.c
  ia64: remove some warnings.
  ia64/xen: fix the link error.
  ia64/pv_ops/bp/xen: implemented binary patchable pv_cpu_ops.
  ia64/pv_ops/binary patch: define paravirt_dv_serialize_data() and suppress false positive warning.
  ia64/pv_ops/bp/module: support binary patching for kernel module.
  ia64/pv_ops: implement binary patching optimization for native.
  ia64/pv_op/binarypatch: add helper functions to support binary patching for paravirt_ops.
  ia64/pv_ops/xen/gate.S: xen gate page paravirtualization
  ia64/pv_ops: paravirtualize gate.S.
  ia64/pv_ops: move down __kernel_syscall_via_epc.
  ia64/pv_ops/xen: define xen specific gate page.
  ia64/pv_ops: gate page paravirtualization.
  ia64/pv_ops/xen/pv_time_ops: implement sched_clock.
  ia64/pv_ops/pv_time_ops: add sched_clock hook.
  ia64/pv_ops/xen: paravirtualize read/write ar.itc and ar.itm
  ia64/pv_ops: paravirtualize mov = ar.itc.
  ia64/pv_ops/pvchecker: support mov = ar.itc paravirtualization
  ia64/pv_ops: paravirtualize fsys.S.
  ...
2009-04-01 13:33:41 -07:00
Stoyan Gaydarov
80a03e2916 [IA64] BUG to BUG_ON changes
Replace:

	if (test)
		BUG();

with
	BUG_ON(test);

Signed-off-by: Stoyan Gaydarov <stoyboyker@gmail.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-04-01 09:50:48 -07:00
Randy Dunlap
ebf7649a4c [IA64] Fix typo/thinko in arch/ia64/sn/kernel/sn2/sn2_smp.c
sn2_ptc_init() has what looks like a cut-n-paste error. Fix it.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-04-01 09:26:12 -07:00
dann frazier
5e3fd9e581 rtc: add platform driver for EFI
Munge Stephane Eranian's efirtc.c code into an rtc platform driver

[akpm@linux-foundation.org: use is_leap_year()]
Signed-off-by: dann frazier <dannf@hp.com>
Cc: Alessandro Zummo <alessandro.zummo@towertech.it>
Cc: stephane eranian <eranian@googlemail.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-01 08:59:24 -07:00
Alexey Dobriyan
bf54215ef8 proc tty: switch ia64 simserial to ->proc_fops
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-01 08:59:10 -07:00
Tony Luck
c66b31f392 Pull pvops into release branch 2009-03-31 14:25:08 -07:00
Tony Luck
50fbe56c12 Pull cpumask into release branch 2009-03-31 14:24:52 -07:00
Linus Torvalds
d17abcd541 Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask:
  oprofile: Thou shalt not call __exit functions from __init functions
  cpumask: remove the now-obsoleted pcibus_to_cpumask(): generic
  cpumask: remove cpumask_t from core
  cpumask: convert rcutorture.c
  cpumask: use new cpumask_ functions in core code.
  cpumask: remove references to struct irqaction's mask field.
  cpumask: use mm_cpumask() wrapper: kernel/fork.c
  cpumask: use set_cpu_active in init/main.c
  cpumask: remove node_to_first_cpu
  cpumask: fix seq_bitmap_*() functions.
  cpumask: remove dangerous CPU_MASK_ALL_PTR, &CPU_MASK_ALL
2009-03-30 18:00:26 -07:00
Linus Torvalds
cf2f7d7c90 Merge branch 'proc-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc
* 'proc-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc:
  Revert "proc: revert /proc/uptime to ->read_proc hook"
  proc 2/2: remove struct proc_dir_entry::owner
  proc 1/2: do PDE usecounting even for ->read_proc, ->write_proc
  proc: fix sparse warnings in pagemap_read()
  proc: move fs/proc/inode-alloc.txt comment into a source file
2009-03-30 16:06:04 -07:00
Alexey Dobriyan
99b7623380 proc 2/2: remove struct proc_dir_entry::owner
Setting ->owner as done currently (pde->owner = THIS_MODULE) is racy
as correctly noted at bug #12454. Someone can lookup entry with NULL
->owner, thus not pinning enything, and release it later resulting
in module refcount underflow.

We can keep ->owner and supply it at registration time like ->proc_fops
and ->data.

But this leaves ->owner as easy-manipulative field (just one C assignment)
and somebody will forget to unpin previous/pin current module when
switching ->owner. ->proc_fops is declared as "const" which should give
some thoughts.

->read_proc/->write_proc were just fixed to not require ->owner for
protection.

rmmod'ed directories will be empty and return "." and ".." -- no harm.
And directories with tricky enough readdir and lookup shouldn't be modular.
We definitely don't want such modular code.

Removing ->owner will also make PDE smaller.

So, let's nuke it.

Kudos to Jeff Layton for reminding about this, let's say, oversight.

http://bugzilla.kernel.org/show_bug.cgi?id=12454

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2009-03-31 01:14:44 +04:00
Rusty Russell
0451fb2ebc cpumask: remove node_to_first_cpu
Everyone defines it, and only one person uses it
(arch/mips/sgi-ip27/ip27-nmi.c).  So just open code it there.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: linux-mips@linux-mips.org
2009-03-30 22:05:12 +10:30
Ingo Molnar
b0d44c0dbb Merge branch 'linus' into core/iommu
Conflicts:
	arch/x86/Kconfig
2009-03-28 23:05:50 +01:00
Linus Torvalds
7c730ccdc1 Merge branch 'percpu-cpumask-x86-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'percpu-cpumask-x86-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (682 commits)
  percpu: fix spurious alignment WARN in legacy SMP percpu allocator
  percpu: generalize embedding first chunk setup helper
  percpu: more flexibility for @dyn_size of pcpu_setup_first_chunk()
  percpu: make x86 addr <-> pcpu ptr conversion macros generic
  linker script: define __per_cpu_load on all SMP capable archs
  x86: UV: remove uv_flush_tlb_others() WARN_ON
  percpu: finer grained locking to break deadlock and allow atomic free
  percpu: move fully free chunk reclamation into a work
  percpu: move chunk area map extension out of area allocation
  percpu: replace pcpu_realloc() with pcpu_mem_alloc() and pcpu_mem_free()
  x86, percpu: setup reserved percpu area for x86_64
  percpu, module: implement reserved allocation and use it for module percpu variables
  percpu: add an indirection ptr for chunk page map access
  x86: make embedding percpu allocator return excessive free space
  percpu: use negative for auto for pcpu_setup_first_chunk() arguments
  percpu: improve first chunk initial area map handling
  percpu: cosmetic renames in pcpu_setup_first_chunk()
  percpu: clean up percpu constants
  x86: un-__init fill_pud/pmd/pte
  x86: remove vestigial fix_ioremap prototypes
  ...

Manually merge conflicts in arch/ia64/kernel/irq_ia64.c
2009-03-28 13:48:38 -07:00
Linus Torvalds
8d735b4148 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] Fix kstat_this_cpu build breakage
2009-03-28 13:31:33 -07:00
Ingo Molnar
82268da1b1 Merge branch 'linus' into percpu-cpumask-x86-for-linus-2
Conflicts:
	arch/sparc/kernel/time_64.c
	drivers/gpu/drm/drm_proc.c

Manual merge to resolve build warning due to phys_addr_t type change
on x86:

	drivers/gpu/drm/drm_info.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-28 04:26:01 +01:00
Linus Torvalds
3ae5080f4c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (37 commits)
  fs: avoid I_NEW inodes
  Merge code for single and multiple-instance mounts
  Remove get_init_pts_sb()
  Move common mknod_ptmx() calls into caller
  Parse mount options just once and copy them to super block
  Unroll essentials of do_remount_sb() into devpts
  vfs: simple_set_mnt() should return void
  fs: move bdev code out of buffer.c
  constify dentry_operations: rest
  constify dentry_operations: configfs
  constify dentry_operations: sysfs
  constify dentry_operations: JFS
  constify dentry_operations: OCFS2
  constify dentry_operations: GFS2
  constify dentry_operations: FAT
  constify dentry_operations: FUSE
  constify dentry_operations: procfs
  constify dentry_operations: ecryptfs
  constify dentry_operations: CIFS
  constify dentry_operations: AFS
  ...
2009-03-27 16:23:12 -07:00
Al Viro
3ba13d179e constify dentry_operations: rest
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-03-27 14:44:03 -04:00
Christoph Hellwig
2b1c6bd77d generic compat_sys_ustat
Due to a different size of ino_t ustat needs a compat handler, but
currently only x86 and mips provide one.  Add a generic compat_sys_ustat
and switch all architectures over to it.  Instead of doing various
user copy hacks compat_sys_ustat just reimplements sys_ustat as
it's trivial.  This was suggested by Arnd Bergmann.

Found by Eric Sandeen when running xfstests/017 on ppc64, which causes
stack smashing warnings on RHEL/Fedora due to the too large amount of
data writen by the syscall.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-03-27 14:43:57 -04:00
Isaku Yamahata
7120569c76 ia64: remove some warnings.
This patch removes the following warnings and related ones.
Plus some cosmetics.

arch/ia64/kernel/patch.c:112: warning: passing argument 1 of 'paravirt_fc' makes integer from pointer without a cast
arch/ia64/kernel/patch.c:135: warning: passing argument 1 of 'paravirt_fc' makes integer from pointer without a cast
arch/ia64/kernel/patch.c:166: warning: passing argument 1 of 'paravirt_fc' makes integer from pointer without a cast
arch/ia64/kernel/patch.c:202: warning: passing argument 1 of 'paravirt_fc' makes integer from pointer without a cast
arch/ia64/kernel/patch.c:220: warning: passing argument 1 of 'paravirt_fc' makes integer from pointer without a cast

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-27 11:11:04 -07:00
Isaku Yamahata
b46a0b08b8 ia64/xen: fix the link error.
This patch fixes the following link error with xen_domu_defconfig.
Depending on compiler version, it doesn't link as follows.
So remove const and use __initdata for xen_iosapic_ops.

> arch/ia64/xen/xen_pv_ops.c:878: error: xen_iosapic_ops causes a section type conflict

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-27 11:10:39 -07:00
Jes Sorensen
66f3e6afa8 [IA64] Fix kstat_this_cpu build breakage
arch/ia64/kernel/irq_ia64.c: In function 'ia64_handle_irq':
arch/ia64/kernel/irq_ia64.c:498: error: 'struct kernel_stat' has no member named 'irqs'
arch/ia64/kernel/irq_ia64.c:500: error: 'struct kernel_stat' has no member named 'irqs'
arch/ia64/kernel/irq_ia64.c: In function 'ia64_process_pending_intr':
arch/ia64/kernel/irq_ia64.c:556: error: 'struct kernel_stat' has no member named 'irqs'
arch/ia64/kernel/irq_ia64.c:558: error: 'struct kernel_stat' has no member named 'irqs'

Fix build breakage due to recent kstat_this_cpu changes in:
   d7e51e6689
   sparseirq: make some func to be used with genirq

Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-27 09:50:46 -07:00
Ingo Molnar
6e15cf0486 Merge branch 'core/percpu' into percpu-cpumask-x86-for-linus-2
Conflicts:
	arch/parisc/kernel/irq.c
	arch/x86/include/asm/fixmap_64.h
	arch/x86/include/asm/setup.h
	kernel/irq/handle.c

Semantic merge:
        arch/x86/include/asm/fixmap.h

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-27 17:28:43 +01:00
Linus Torvalds
ba1eb95cf3 Merge branch 'header-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'header-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (50 commits)
  x86: headers cleanup - setup.h
  emu101k1.h: fix duplicate include of <linux/types.h>
  compiler-gcc4: conditionalize #error on __KERNEL__
  remove __KERNEL_STRICT_NAMES
  make netfilter use strict integer types
  make drm headers use strict integer types
  make MTD headers use strict integer types
  make most exported headers use strict integer types
  make exported headers use strict posix types
  unconditionally include asm/types.h from linux/types.h
  make linux/types.h as assembly safe
  Neither asm/types.h nor linux/types.h is required for arch/ia64/include/asm/fpu.h
  headers_check fix cleanup: linux/reiserfs_fs.h
  headers_check fix cleanup: linux/nubus.h
  headers_check fix cleanup: linux/coda_psdev.h
  headers_check fix: x86, setup.h
  headers_check fix: x86, prctl.h
  headers_check fix: linux/reinserfs_fs.h
  headers_check fix: linux/socket.h
  headers_check fix: linux/nubus.h
  ...

Manually fix trivial conflicts in:
	include/linux/netfilter/xt_limit.h
	include/linux/netfilter/xt_statistic.h
2009-03-26 16:11:41 -07:00
Linus Torvalds
a8416961d3 Merge branch 'irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (32 commits)
  x86: disable __do_IRQ support
  sparseirq, powerpc/cell: fix unused variable warning in interrupt.c
  genirq: deprecate obsolete typedefs and defines
  genirq: deprecate __do_IRQ
  genirq: add doc to struct irqaction
  genirq: use kzalloc instead of explicit zero initialization
  genirq: make irqreturn_t an enum
  genirq: remove redundant if condition
  genirq: remove unused hw_irq_controller typedef
  irq: export remove_irq() and setup_irq() symbols
  irq: match remove_irq() args with setup_irq()
  irq: add remove_irq() for freeing of setup_irq() irqs
  genirq: assert that irq handlers are indeed running in hardirq context
  irq: name 'p' variables a bit better
  irq: further clean up the free_irq() code flow
  irq: refactor and clean up the free_irq() code flow
  irq: clean up manage.c
  irq: use GFP_KERNEL for action allocation in request_irq()
  kernel/irq: fix sparse warning: make symbol static
  irq: optimize init_kstat_irqs/init_copy_kstat_irqs
  ...
2009-03-26 16:06:50 -07:00
Linus Torvalds
13220a94d3 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1750 commits)
  ixgbe: Allow Priority Flow Control settings to survive a device reset
  net: core: remove unneeded include in net/core/utils.c.
  e1000e: update version number
  e1000e: fix close interrupt race
  e1000e: fix loss of multicast packets
  e1000e: commonize tx cleanup routine to match e1000 & igb
  netfilter: fix nf_logger name in ebt_ulog.
  netfilter: fix warning in ebt_ulog init function.
  netfilter: fix warning about invalid const usage
  e1000: fix close race with interrupt
  e1000: cleanup clean_tx_irq routine so that it completely cleans ring
  e1000: fix tx hang detect logic and address dma mapping issues
  bridge: bad error handling when adding invalid ether address
  bonding: select current active slave when enslaving device for mode tlb and alb
  gianfar: reallocate skb when headroom is not enough for fcb
  Bump release date to 25Mar2009 and version to 0.22
  r6040: Fix second PHY address
  qeth: fix wait_event_timeout handling
  qeth: check for completion of a running recovery
  qeth: unregister MAC addresses during recovery.
  ...

Manually fixed up conflicts in:
	drivers/infiniband/hw/cxgb3/cxio_hal.h
	drivers/infiniband/hw/nes/nes_nic.c
2009-03-26 15:54:36 -07:00
David S. Miller
08abe18af1 Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts:
	drivers/net/wimax/i2400m/usb-notif.c
2009-03-26 15:23:24 -07:00
Isaku Yamahata
0a7d324402 ia64/pv_ops/bp/xen: implemented binary patchable pv_cpu_ops.
implemented xen binary patch for pv_cpu_ops.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-26 11:03:14 -07:00
Isaku Yamahata
dae17da60d ia64/pv_ops/binary patch: define paravirt_dv_serialize_data() and suppress false positive warning.
define paravirt_dv_serialize_data() and insert it to suppress
false positive warnings.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-26 11:02:59 -07:00
Isaku Yamahata
ee158fcd09 ia64/pv_ops/bp/module: support binary patching for kernel module.
support binary patching for kernel module.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-26 11:02:51 -07:00
Isaku Yamahata
03f511dd02 ia64/pv_ops: implement binary patching optimization for native.
implement binary patching optimization for pv_cpu_ops.
With this optimization, indirect call for pv_cpu_ops methods can be
converted into inline execution or direct call.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-26 11:02:42 -07:00
Isaku Yamahata
bf7ab02f62 ia64/pv_op/binarypatch: add helper functions to support binary patching for paravirt_ops.
add helper functions to support binary patching for paravirt_ops.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-26 11:02:31 -07:00
Isaku Yamahata
f8de2ec678 ia64/pv_ops/xen/gate.S: xen gate page paravirtualization
xen gate page paravirtualization

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-26 11:01:55 -07:00
Isaku Yamahata
c4312511ba ia64/pv_ops: paravirtualize gate.S.
paravirtualize gate.S.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-26 11:01:46 -07:00
Isaku Yamahata
53129c5c55 ia64/pv_ops: move down __kernel_syscall_via_epc.
Move down __kernel_syscall_via_epc to the end of the page.
We want to paravirtualize only __kernel_syscall_via_epc because
it includes privileged instructions. Its paravirtualization increases
its symbols size.

On the other hand, each paravirtualized gate must have e symbols of
same value and size to native's because the page is mapped to GATE_ADDR
and GATE_ADDR + PERCPU_PAGE_SIZE and vmlinux is linked to those symbols.
Later to have the same symbol size, we pads NOPs at the end of
__kernel_syscall_via_epc. Move it after other functions to keep
symbols of other functions have same values and sizes.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-26 11:01:11 -07:00
Isaku Yamahata
b937dd76d0 ia64/pv_ops/xen: define xen specific gate page.
define xen specific gate page.
At this phase bits in the gate page is same to native.
At the next phase, it will be paravirtualized.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-26 10:51:12 -07:00
Isaku Yamahata
e4ff5b8f54 ia64/pv_ops: gate page paravirtualization.
paravirtualize gate page by allowing each pv_ops instances
to define its own gate page.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-26 10:51:02 -07:00
Isaku Yamahata
1aec1c558a ia64/pv_ops/xen/pv_time_ops: implement sched_clock.
paravirtualize sched_clock.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-26 10:50:51 -07:00
Isaku Yamahata
f927da1786 ia64/pv_ops/pv_time_ops: add sched_clock hook.
add sched_clock() hook to paravirtualize sched_clock().
ia64 sched_clock() is based on ar.itc which isn't stable
on virtualized environment because vcpu may move around on
pcpus. So it needs paravirtualization.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-26 10:50:42 -07:00
Isaku Yamahata
496203b15b ia64/pv_ops/xen: paravirtualize read/write ar.itc and ar.itm
paravirtualize ar.itc and ar.itm in order to support save/restore.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-26 10:50:32 -07:00
Isaku Yamahata
94752a794d ia64/pv_ops: paravirtualize mov = ar.itc.
paravirtualize mov reg = ar.itc.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-26 10:50:22 -07:00
Isaku Yamahata
9d1964f25c ia64/pv_ops/pvchecker: support mov = ar.itc paravirtualization
add suport for mov = ar.itc to pvchecker.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-26 10:50:09 -07:00
Isaku Yamahata
84b8857a03 ia64/pv_ops: paravirtualize fsys.S.
paravirtualize fsys.S.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-26 10:50:01 -07:00
Isaku Yamahata
533bd15623 ia64/pv_ops/xen: preliminary to paravirtualizing fsys.S for xen.
This is a preliminary patch to paravirtualizing fsys.S.
compile fsys.S twice one for native and one for xen, and switch
them at run tine.
Later fsys.S will be paravirtualized.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-26 10:49:47 -07:00
Isaku Yamahata
dd97d5cb54 ia64/pv_ops: add hooks to paravirtualize fsyscall implementation.
Add two hooks, paravirt_get_fsyscall_table() and
paravirt_get_fsys_bubble_doen() to paravirtualize fsyscall implementation.
This patch just add the hooks fsyscall and don't paravirtualize it.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-26 10:48:33 -07:00
Isaku Yamahata
ac93925acb ia64/xen: short-circuit tests for dom0
This patch is ia64 counter part of clean up of the xen predicates.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-26 10:38:06 -07:00
Isaku Yamahata
e8c3b42057 ia64/pv_ops/xen: use __initconst instead of __initdata for const data
use __initconst instead of __initdata for const data like
ec8148de85

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-26 10:37:54 -07:00
Ingo Molnar
5a54bd1307 Merge commit 'v2.6.29' into core/header-fixes 2009-03-26 18:29:40 +01:00
Xiantao Zhang
6b08035f3e KVM: ia64: Fix the build errors due to lack of macros related to MSI.
Include the newly introduced msidef.h to solve the build issues.

Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-03-24 11:03:13 +02:00
Xiantao Zhang
2fa8937f3a ia64: Move the macro definitions related to MSI to one header file.
For kvm's MSI support, it needs these macros defined in ia64_msi.c, and
to avoid duplicate them, move them to one header file and share with
kvm.

Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-03-24 11:03:12 +02:00
Gleb Natapov
4925663a07 KVM: Report IRQ injection status to userspace.
IRQ injection status is either -1 (if there was no CPU found
that should except the interrupt because IRQ was masked or
ioapic was misconfigured or ...) or >= 0 in that case the
number indicates to how many CPUs interrupt was injected.
If the value is 0 it means that the interrupt was coalesced
and probably should be reinjected.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-03-24 11:03:11 +02:00
Jes Sorensen
934d534f8a KVM: ia64: dynamic nr online cpus
Account for number of online cpus and use that in loops iterating over
the list of vpus instead of scanning the full array unconditionally.
This patch is a building block to facilitate allowing to bump up
the size of MAX_VCPUS significantly.

Signed-off-by: Jes Sorensen <jes@sgi.com>
Acked-by : Xiantao Zhang  <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-03-24 11:03:07 +02:00
Xiantao Zhang
7d656bd996 KVM: ia64: Implement some pal calls needed for windows 2008
For windows 2008, it needs more pal calls to implement for booting.
In addition, also changes the name of set_{sal, pal}_call_result to
get_{sal,pal}_call_result for readability.

Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-03-24 11:03:06 +02:00
Xiantao Zhang
4b7bb626e3 KVM: ia64: Add the support for translating PAL Call's pointer args
Add the support to translate PAL Call's pointer args.

Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-03-24 11:03:06 +02:00
Xiantao Zhang
27d146449c KVM: ia64: vTLB change for enabling windows 2008 boot
Simply the logic of hash vTLB, and export kvm_gpa_to_mpa.

Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-03-24 11:03:06 +02:00
Avi Kivity
399ec807dd KVM: Userspace controlled irq routing
Currently KVM has a static routing from GSI numbers to interrupts (namely,
0-15 are mapped 1:1 to both PIC and IOAPIC, and 16:23 are mapped 1:1 to
the IOAPIC).  This is insufficient for several reasons:

- HPET requires non 1:1 mapping for the timer interrupt
- MSIs need a new method to assign interrupt numbers and dispatch them
- ACPI APIC mode needs to be able to reassign the PCI LINK interrupts to the
  ioapics

This patch implements an interrupt routing table (as a linked list, but this
can be easily changed) and a userspace interface to replace the table.  The
routing table is initialized according to the current hardwired mapping.

Signed-off-by: Avi Kivity <avi@redhat.com>
2009-03-24 11:03:06 +02:00
Jes Sorensen
a26b73ad5e KVM: ia64: expose registers in struct kvm_regs
Provide register layout for struct kvm_regs exposed to userland.

Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-03-24 11:03:03 +02:00
Avi Kivity
5d9b8e30f5 KVM: Add CONFIG_HAVE_KVM_IRQCHIP
Two KVM archs support irqchips and two don't.  Add a Kconfig item to
make selecting between the two models easier.

Signed-off-by: Avi Kivity <avi@redhat.com>
2009-03-24 11:03:02 +02:00
Xiantao Zhang
22ccb14203 KVM: ia64: Code cleanup
Remove some unnecessary blank lines to accord with Kernel's coding style.
Also remove vcpu_get_itir_on_fault due to no reference to it.

Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-03-24 11:02:50 +02:00
Jan Kiszka
989c0f0ed5 KVM: Remove old kvm_guest_debug structs
Remove the remaining arch fragments of the old guest debug interface
that now break non-x86 builds.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-03-24 11:02:50 +02:00
Jes Sorensen
e9a999fe1f KVM: ia64: stack get/restore patch
Implement KVM_IA64_VCPU_[GS]ET_STACK ioctl calls. This is required
for live migrations.

Patch is based on previous implementation that was part of old
GET/SET_REGS ioctl calls.

Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-03-24 11:02:50 +02:00
Jan Kiszka
d0bfb940ec KVM: New guest debug interface
This rips out the support for KVM_DEBUG_GUEST and introduces a new IOCTL
instead: KVM_SET_GUEST_DEBUG. The IOCTL payload consists of a generic
part, controlling the "main switch" and the single-step feature. The
arch specific part adds an x86 interface for intercepting both types of
debug exceptions separately and re-injecting them when the host was not
interested. Moveover, the foundation for guest debugging via debug
registers is layed.

To signal breakpoint events properly back to userland, an arch-specific
data block is now returned along KVM_EXIT_DEBUG. For x86, the arch block
contains the PC, the debug exception, and relevant debug registers to
tell debug events properly apart.

The availability of this new interface is signaled by
KVM_CAP_SET_GUEST_DEBUG. Empty stubs for not yet supported archs are
provided.

Note that both SVM and VTX are supported, but only the latter was tested
yet. Based on the experience with all those VTX corner case, I would be
fairly surprised if SVM will work out of the box.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-03-24 11:02:49 +02:00
Ingo Molnar
04dfcfcb54 Merge branch 'linus' into core/iommu 2009-03-18 10:37:43 +01:00
Ingo Molnar
edb35028e4 Merge branches 'irq/genirq' and 'linus' into irq/core 2009-03-16 09:20:13 +01:00
Rusty Russell
5d8c39f68e cpumask: use mm_cpumask() wrapper: ia64
Makes code futureproof against the impending change to mm->cpu_vm_mask.

It's also a chance to use the new cpumask_ ops which take a pointer
(the older ones are deprecated, but there's no hurry for arch code).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-03-16 14:12:48 +10:30
Rusty Russell
2af51a3f81 cpumask: Use accessors code.: ia64
Impact: use new API

Use the accessors rather than frobbing bits directly.  Most of this is
in arch code I haven't even compiled, but is straightforward.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
2009-03-16 14:12:43 +10:30
Rusty Russell
5dd3c9949a cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.: ia64
Impact: cleanup, futureproof

In fact, all cpumask ops will only be valid (in general) for bit
numbers < nr_cpu_ids.  So use that instead of NR_CPUS in various
places.

This is always safe: no cpu number can be >= nr_cpu_ids, and
nr_cpu_ids is initialized to NR_CPUS at boot.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
2009-03-16 14:12:42 +10:30
Rusty Russell
40fe697a17 cpumask: arch_send_call_function_ipi_mask: ia64
We're weaning the core code off handing cpumask's around on-stack.
This introduces arch_send_call_function_ipi_mask().

We also take the chance to wean send_IPI_mask off the obsolescent
for_each_cpu_mask(): making it take the pointer seemed the most
natural way.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-03-16 14:12:41 +10:30