Commit Graph

30125 Commits

Author SHA1 Message Date
Joerg Roedel edcb34da25 AMD IOMMU: use calc_devid in prealloc_protection_domains
Impact: cleanup

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:57 +01:00
Joerg Roedel c226f85309 AMD IOMMU: convert amd_iommu_isolate to bool
Impact: cleanup

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:57 +01:00
Joerg Roedel 0cfd7aa90b AMD IOMMU: convert iommu->need_sync to bool
Impact: use bool instead of int for iommu->need_sync

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:57 +01:00
Joerg Roedel ab89672286 AMD IOMMU: use dev_name instead of self-build print_devid
Impact: use generic dev_name instead of own function

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:56 +01:00
Joerg Roedel 1ac4cbbc5e AMD IOMMU: allocate a new protection for hotplugged devices
Impact: also hotplug devices benefit from device isolation

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:56 +01:00
Joerg Roedel e2dc14a2a6 AMD IOMMU: add a domain flag for default domains
Impact: adds a new protection domain flag

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:56 +01:00
Joerg Roedel 26961efe0d AMD IOMMU: register functions for the IOMMU API
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:56 +01:00
Joerg Roedel 645c4c8d72 AMD IOMMU: add domain address lookup function for IOMMU API
Impact: add a generic function to lockup addresses in protection domains

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:56 +01:00
Joerg Roedel eb74ff6cc0 AMD IOMMU: add domain unmap function for IOMMU API
Impact: add a generic function to unmap pages into protection domains

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:56 +01:00
Joerg Roedel c6229ca649 AMD IOMMU: add domain map function for IOMMU API
Impact: add a generic function to map pages into protection domains

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:56 +01:00
Joerg Roedel 01106066a6 AMD IOMMU: add device attach function for IOMMU API
Impact: add a generic function to attach devices to protection domains

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:56 +01:00
Joerg Roedel 684f288884 AMD IOMMU: add device detach function for IOMMU API
Impact: add a generic function to detach devices from protection domains

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:55 +01:00
Joerg Roedel 98383fc301 AMD IOMMU: add domain destroy function for IOMMU API
Impact: add a generic function for releasing protection domains

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:55 +01:00
Joerg Roedel c156e347d6 AMD IOMMU: add domain init function for IOMMU API
Impact: add a generic function for allocation protection domains

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:55 +01:00
Joerg Roedel 6d98cd8043 AMD IOMMU: add domain cleanup helper function
Impact: add a function to remove all devices from a domain

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:55 +01:00
Joerg Roedel e275a2a0fc AMD IOMMU: add device notifier callback
Impact: inform IOMMU about state change of a device in the driver core

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:55 +01:00
Joerg Roedel 355bf553ed AMD IOMMU: add device detach helper functions
Impact: add helper functions to detach a device from a domain

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:55 +01:00
Joerg Roedel f1179dc005 AMD IOMMU: rename set_device_domain function
Impact: rename set_device_domain() to attach_device()

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:54 +01:00
Joerg Roedel 863c74ebd0 AMD IOMMU: add device reference counting for protection domains
Impact: know how many devices are assigned to a domain

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:54 +01:00
Joerg Roedel 5b28df6f43 AMD IOMMU: add checks for dma_ops domain to dma_ops functions
Impact: detect when a driver uses a device assigned otherwise

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:54 +01:00
Joerg Roedel 9fdb19d64c AMD IOMMU: add protection domain flags
Imapct: add a new struct member to 'struct protection_domain'

When using protection domains for dma_ops and KVM its better to know for
which subsystem it was allocated. Add a flags member to struct
protection domain for that purpose.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:54 +01:00
Joerg Roedel 43f4960983 AMD IOMMU: add iommu_flush_domain function
Impact: add a function to flush a domain id on every IOMMU

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:54 +01:00
Joerg Roedel 9e919012e3 AMD IOMMU: don't remove protection domain from iommu_pd_list
Impact: save unneeded logic to add and remove domains to the list

The removal of a protection domain from the iommu_pd_list is not
necessary. Another benefit is that we save complexity because we don't
have to readd it later when the device no longer uses the domain.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:54 +01:00
Joerg Roedel 237b6f3329 AMD IOMMU: move invalidation command building to a separate function
Impact: refactoring of iommu_queue_inv_iommu_pages

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:54 +01:00
Joerg Roedel 8d201968e1 AMD IOMMU: refactor completion wait handling into separate functions
Impact: split one function into three

The separate functions are required synchronize commands across all
hardware IOMMUs in the system.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:54 +01:00
Joerg Roedel a2acfb7579 AMD IOMMU: add domain id free function
Impact: add code to release a domain id

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:53 +01:00
Joerg Roedel 86db2e5d47 AMD IOMMU: make dma_ops_free_pagetable generic
Impact: change code to free pagetables from protection domains

The dma_ops_free_pagetable function can only free pagetables from
dma_ops domains. Change that to free pagetables of pure protection
domains.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:53 +01:00
Joerg Roedel 38e817febe AMD IOMMU: rename iommu_map to iommu_map_page
Impact: function rename

The iommu_map function maps only one page. Make this clear in the
function name.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:53 +01:00
Joerg Roedel 19de40a847 KVM: change KVM to use IOMMU API
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:07 +01:00
Joerg Roedel 1aaf118352 select IOMMU_API when DMAR and/or AMD_IOMMU is selected
These two IOMMUs can implement the current version of this API. So
select the API if one or both of these IOMMU drivers is selected.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:10:09 +01:00
Joerg Roedel c4fa386428 KVM: rename vtd.c to iommu.c
Impact: file renamed

The code in the vtd.c file can be reused for other IOMMUs as well. So
rename it to make it clear that it handle more than VT-d.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:10:09 +01:00
David S. Miller fa8efd50b3 sparc: Update 64-bit defconfig.
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 21:54:25 -08:00
Rusty Russell 9ddabc2a29 h8300: define __fls
Like fls, but can't be handed 0 and returns the bit number.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-01-03 16:16:04 +10:30
Sam Ravnborg f54c88cb6c sparc: remove NO_PROC_ID - it is no longer used
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 21:33:54 -08:00
Sam Ravnborg 65579f3cfb sparc: drop get_tbr() in traps.h
get_tbr() has no users in the whole tree -drop it.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 21:33:05 -08:00
Sam Ravnborg 220483fec0 sparc: fix warning in userspace header traps.h
Fix following warning:
traps.h:23: extern's make no sense in userspace

Add an ifdef __KERNEL__ block that cover the
extern definition and a few related things that neither
is for userspace.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 21:32:34 -08:00
Sam Ravnborg fffeeb4137 sparc: fix warnings in userspace header byteorder.h
Fix following warnings in byteorder.h:

byteorder.h:4: include of <linux/types.h> is preferred over <asm/types.h>
byteorder.h:9: leaks CONFIG_SPARC32 to userspace where it is not valid
byteorder.h:13: leaks CONFIG_SPARC64 to userspace where it is not valid
byteorder.h:14: found __[us]{8,16,32,64} type without #include <linux/types.h>
byteorder.h:47: leaks CONFIG_SPARC64 to userspace where it is not valid

- changed to use include <linux/types.h> as suggested
- use preprocessor defined symbols to distingush between 32 and 64 bit

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 21:31:58 -08:00
Sam Ravnborg 2ef4c01e18 sparc: fix warning in userspace header jsflash.h
Fix following warnings in jsflash.h:

jsflash.h:11: include of <linux/types.h> is preferred over <asm/types.h>
jsflash.h:24: found __[us]{8,16,32,64} type without #include <linux/types.h>

Fixed by changing the include to <linux/types.h>

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 21:31:13 -08:00
Sam Ravnborg 7c59d28d0e sparc: unify openprom.h
After the preparational steps the unification was simple.

The linux_prom_pci_registers definition did not look like
it could be unified at first look since the structure is assigned
using prop_getproperty() / of_get_property() so the structure
is assumed to come direct form the prom.

The LINUX_OPPROM_MAGIC was kept even if it is not used by the kernel
on the assumption that userspace may require it.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 21:15:25 -08:00
Sam Ravnborg 640cc590bd sparc64: delete unused linux_prom64_ranges from openprom_64.h
It was not used over the whole tree - so drop it.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 21:14:35 -08:00
Sam Ravnborg bb5b52bbd5 sparc: prepare openprom for unification
Align the sparc and sparc64 versions so differences are minimal.
A few data types are changed to better reflect there actual usage.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 21:13:52 -08:00
Sam Ravnborg b608c3fe3c sparc: remove linux_prom_pci_assigned_addresses from openprom_32.h
It is not used anywhere in the tree so drop it.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 21:12:40 -08:00
Sam Ravnborg 3011618d9a sparc: remove ebus definitions from openprom*.h
Looks like leftovers from the removal of the special ebus layer.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 21:10:48 -08:00
Sam Ravnborg 1eae29bcc2 sparc: unify siginfo.h
Trivial unification where the sparc64 specific
parts are protected using a signle ifdef/endif pair.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 21:10:04 -08:00
Rusty Russell 0999769e6c cris: define __fls
Like fls, but can't be handed 0 and returns the bit number.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-01-03 15:37:14 +10:30
Sam Ravnborg f3ec38d513 sparc: unify ptrace.h
The two ptrace.h implementations are very alike but
the small differences required two set of ifdef/else/endif pairs.

The definition of reg_window32 could have been shared but
that would have required several updates in sparc32 code as
all printk formatting for example assume it is longs.

sparc_stackf looked like anohter candidate to share if the 32
bit was renamed to sparc_stackf32.
But it contains two pointers in the sparc32 version which would
have been 64 bit in the sparc64 version so it was non-trivial.
Using a set of accessor macros could do the trick if pursued later.

The sparc64 specific definitions are not protected by
ifdef - as it should not be required to do so.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 19:42:12 -08:00
Sam Ravnborg bd703d88a2 sparc: unify sigcontext.h
With the renamed types in place the unification was straightforward.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 19:34:46 -08:00
Sam Ravnborg 4d7b92ad57 sparc: add '32' suffix to reg_window, sigcontext, __siginfo_t
Renaming a few types to contain a 32 suffix makes the
type names compatible with sparc64 and thus makes sharing
between the two a lot easier.

Note: None of these definitions are expected part of the
stable ABI towards userspace.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 19:32:59 -08:00
Sam Ravnborg ece93487c3 sparc: unify signal.h
They were almost identical and with the preapration
patch nothing was needed to be added.

The unified version contains a few sparc64 only definitions
but they are kept as is and not protected by ifdef/endif.
The unified version exports a bit more to userspace then the
32 bit version did.
This is not considered fatal.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 19:21:06 -08:00
Sam Ravnborg 55d646feee sparc64: prepare signal_64 for unification
o add a sparc32 only definition
o fix a few style issues (white space errors etc).
o include compiler.h (for __user)

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 19:17:47 -08:00
David S. Miller a0381a9480 sparc: Kill bogus comment about IRQF_SHARED in pci_psycho.c
Noticed by Geert Uytterhoeven.

Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 19:12:46 -08:00
Sam Ravnborg 12aa0b1732 sparc: unify stat.h
To my suprise struct stat64 was not equal on sparc 32 and sparc64,
so there was really nothing to share here.
Unify the files by adding their respective content to stat.h.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 18:48:21 -08:00
Sam Ravnborg 085219f79c sparc32: use proper types in struct stat
Like sparc64 use proper types in struct stat

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 18:47:34 -08:00
Sam Ravnborg 104e28059d sparc32: drop __old_kernel_stat
sparc32 does not define __ARCH_WANT_OLD_STAT so
we do not use this structure neither do we support it.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 18:39:10 -08:00
Sam Ravnborg a508228a9e sparc: unify posix_types.h
The posix types differed so much in their definition
that they are kept in separate blocks.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 18:35:29 -08:00
Sam Ravnborg a66963a966 sparc: delete unused config symbols
There is no need to define a config symbol if
it is never set to any value. Undefined symbols equal
to 'n'.

GENERIC_GPIO looks like it is similar but
it is set using select in some other file so
it must be kept.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-02 18:14:04 -08:00
Linus Torvalds 56635f7e61 Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next:
  kbuild: ignore a few files in headers_check
  kbuild: add checks for include of linux/types in userspace headers
  kbuild: drop debugging leftover in tags.sh
  kbuild: document environment variables
  kbuild: make *config usage docs
  kbuild: disable sparse warning "returning void-valued expression"
  kbuild: in headers_install autoconvert asm/inline/volatile to __xxx__
  kbuild: check for leaked CONFIG_ symbols to userspace
  headers_check.pl: disallow extern's
  kconfig: improve error messages for bad source statements
  kconfig: struct property commented
  kconfig: add comments to symbol flags
  kconfig: explain symbol value defaults
  m68k: fix recursive dependency in Kconfig
2009-01-02 15:56:54 -08:00
Ingo Molnar 47dabdc7fc Merge branches 'x86/cleanups', 'x86/fpu' and 'x86/urgent' into x86/core 2009-01-02 22:41:52 +01:00
Ingo Molnar 923a789b49 Merge branch 'linus' into x86/cleanups
Conflicts:
	arch/x86/kernel/reboot.c
2009-01-02 22:41:36 +01:00
Roland Dreier 79ff56ebd3 swiotlb: add missing __init annotations
Impact: cleanup, reduce kernel size a bit

The current kernel build warns:

    WARNING: vmlinux.o(.text+0x11458): Section mismatch in reference from the function swiotlb_alloc_boot() to the function .init.text:__alloc_bootmem_low()
    The function swiotlb_alloc_boot() references
    the function __init __alloc_bootmem_low().
    This is often because swiotlb_alloc_boot lacks a __init
    annotation or the annotation of __alloc_bootmem_low is wrong.

    WARNING: vmlinux.o(.text+0x1011f2): Section mismatch in reference from the function swiotlb_late_init_with_default_size() to the function .init.text:__alloc_bootmem_low()
    The function swiotlb_late_init_with_default_size() references
    the function __init __alloc_bootmem_low().
    This is often because swiotlb_late_init_with_default_size lacks a __init
    annotation or the annotation of __alloc_bootmem_low is wrong.

and indeed the functions calling __alloc_bootmem_low() can be marked
__init as well.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-02 21:52:39 +01:00
Linus Torvalds b840d79631 Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (66 commits)
  x86: export vector_used_by_percpu_irq
  x86: use logical apicid in x2apic_cluster's x2apic_cpu_mask_to_apicid_and()
  sched: nominate preferred wakeup cpu, fix
  x86: fix lguest used_vectors breakage, -v2
  x86: fix warning in arch/x86/kernel/io_apic.c
  sched: fix warning in kernel/sched.c
  sched: move test_sd_parent() to an SMP section of sched.h
  sched: add SD_BALANCE_NEWIDLE at MC and CPU level for sched_mc>0
  sched: activate active load balancing in new idle cpus
  sched: bias task wakeups to preferred semi-idle packages
  sched: nominate preferred wakeup cpu
  sched: favour lower logical cpu number for sched_mc balance
  sched: framework for sched_mc/smt_power_savings=N
  sched: convert BALANCE_FOR_xx_POWER to inline functions
  x86: use possible_cpus=NUM to extend the possible cpus allowed
  x86: fix cpu_mask_to_apicid_and to include cpu_online_mask
  x86: update io_apic.c to the new cpumask code
  x86: Introduce topology_core_cpumask()/topology_thread_cpumask()
  x86: xen: use smp_call_function_many()
  x86: use work_on_cpu in x86/kernel/cpu/mcheck/mce_amd_64.c
  ...

Fixed up trivial conflict in kernel/time/tick-sched.c manually
2009-01-02 11:44:09 -08:00
Sam Ravnborg cfb2a494bb m68k: fix recursive dependency in Kconfig
We had a recursive dependency between MMU_MOTOROLA and MMU_SUN3
Fix it by dropping the unused dependencies on MMU_MOTOROLA.

MMU_MOTOROLA is set to y only using select so any dependencies
are anyway ignored.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
2009-01-02 20:43:20 +01:00
Linus Torvalds 597b0d2162 Merge branch 'kvm-updates/2.6.29' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm
* 'kvm-updates/2.6.29' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: (140 commits)
  KVM: MMU: handle large host sptes on invlpg/resync
  KVM: Add locking to virtual i8259 interrupt controller
  KVM: MMU: Don't treat a global pte as such if cr4.pge is cleared
  MAINTAINERS: Maintainership changes for kvm/ia64
  KVM: ia64: Fix kvm_arch_vcpu_ioctl_[gs]et_regs()
  KVM: x86: Rework user space NMI injection as KVM_CAP_USER_NMI
  KVM: VMX: Fix pending NMI-vs.-IRQ race for user space irqchip
  KVM: fix handling of ACK from shared guest IRQ
  KVM: MMU: check for present pdptr shadow page in walk_shadow
  KVM: Consolidate userspace memory capability reporting into common code
  KVM: Advertise the bug in memory region destruction as fixed
  KVM: use cpumask_var_t for cpus_hardware_enabled
  KVM: use modern cpumask primitives, no cpumask_t on stack
  KVM: Extract core of kvm_flush_remote_tlbs/kvm_reload_remote_mmus
  KVM: set owner of cpu and vm file operations
  anon_inodes: use fops->owner for module refcount
  x86: KVM guest: kvm_get_tsc_khz: return khz, not lpj
  KVM: MMU: prepopulate the shadow on invlpg
  KVM: MMU: skip global pgtables on sync due to cr3 switch
  KVM: MMU: collapse remote TLB flushes on root sync
  ...
2009-01-02 11:41:11 -08:00
Ingo Brueckl e8e3232627 Fix compiler warning in arch/x86/mm/init_32.c
Signed-off-by: Ingo Brueckl <ib@wupperonline.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-02 10:27:32 -08:00
Jaswinder Singh Rajput 103ceffb95 x86: mpparse.c fix style problems
Impact: cleanup, fix style problems, more readable

Fixes style problems:

 WARNING: Use #include <linux/smp.h> instead of <asm/smp.h>
 WARNING: Use #include <linux/acpi.h> instead of <asm/acpi.h>
 WARNING: suspect code indent for conditional statements (8, 17)
 WARNING: space prohibited between function name and open parenthesis '('

total: 0 errors, 5 warnings

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-02 19:24:28 +01:00
Jaswinder Singh Rajput dceb4521c8 x86: nmi.c fix style problems
Impact: cleanup, fix style problems

Fixes style problems:

 WARNING: Use #include <linux/smp.h> instead of <asm/smp.h>
 WARNING: Use #include <linux/nmi.h> instead of <asm/nmi.h>

total: 0 errors, 2 warnings

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-02 19:03:38 +01:00
Jaswinder Singh Rajput 423a54058f x86: ldt.c fix style problems
Impact: cleanup

Fixes style problems:

 WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h>
 ERROR: space required before the open parenthesis '('

total: 1 errors, 1 warnings

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-02 17:46:24 +01:00
Jaswinder Singh Rajput f634fa9411 x86: cpuid.c fix style problems
Impact: cleanup

Fixes style problems:

 WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h>
 ERROR: "foo * bar" should be "foo *bar"
 ERROR: trailing whitespace
 WARNING: usage of NR_CPUS is often wrong - consider using cpu_possible(), num_possible_cpus(), for_each_possible_cpu(), etc

total: 2 errors, 2 warnings

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-02 17:46:23 +01:00
Cliff Wickman 46814dded1 x86, UV: remove erroneous BAU initialization
Impact: fix crash on x86/UV

UV is the SGI "UltraViolet" machine, which is x86_64 based.
BAU is the "Broadcast Assist Unit", used for TLB shootdown in UV.

This patch removes the allocation and initialization of an unused table.

This table is left over from a development test mode.  It is unused in
the present code.

And it was incorrectly initialized: 8 entries allocated but 17 initialized,
causing slab corruption.

This patch should go into 2.6.27 and 2.6.28 as well as the current tree.

Diffed against 2.6.28 (linux-next, 12/30/08)

Signed-off-by: Cliff Wickman <cpw@sgi.com>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-02 17:26:25 +01:00
Ravikiran G Thirumalai 26799a6311 x86: fix incorrect __read_mostly on _boot_cpu_pda
The pda rework (commit 3461b0af02)
to remove static boot cpu pdas introduced a performance bug.

_boot_cpu_pda is the actual pda used by the boot cpu and is definitely
not "__read_mostly" and ended up polluting the read mostly section with
writes.  This bug caused regression of about 8-10% on certain syscall
intensive workloads.

Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Acked-by: Mike Travis <travis@sgi.com>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-02 17:16:29 +01:00
Ingo Brueckl a9067d5376 x86: convert permanent_kmaps_init() from macro to inline
Impact: cleanup

This compiler warning:

  arch/x86/mm/init_32.c:515: warning: unused variable 'pgd_base'

triggers because permanent_kmaps_init() is a CPP macro in the
!CONFIG_HIGHMEM case, that does not tell the compiler that the
'pgd_base' parameter is used.

Convert permanent_kmaps_init() (and set_highmem_pages_init()) to
C inline functions - which gives the parameter a proper type and
which gets rid of the compiler warning as well.

Signed-off-by: Ingo Brueckl <ib@wupperonline.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-02 15:41:03 +01:00
Cyrill Gorcunov c64d8996bd x86: early_printk - use sizeof instead of hardcoded number
Impact: cleanup

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-02 10:27:46 +01:00
Linus Torvalds b58602a4ba 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: (34 commits)
  nfsd race fixes: jfs
  nfsd race fixes: reiserfs
  nfsd race fixes: ext4
  nfsd race fixes: ext3
  nfsd race fixes: ext2
  nfsd/create race fixes, infrastructure
  filesystem notification: create fs/notify to contain all fs notification
  fs/block_dev.c: __read_mostly improvement and sb_is_blkdev_sb utilization
  kill ->dir_notify()
  filp_cachep can be static in fs/file_table.c
  fix f_count description in Documentation/filesystems/files.txt
  make INIT_FS use the __RW_LOCK_UNLOCKED initialization
  take init_fs to saner place
  kill vfs_permission
  pass a struct path * to may_open
  kill walk_init_root
  remove incorrect comment in inode_permission
  expand some comments (d_path / seq_path)
  correct wrong function name of d_put in kernel document and source comment
  fix switch_names() breakage in short-to-short case
  ...
2008-12-31 15:57:56 -08:00
Rusty Russell d036e67b40 cpumask: convert kernel/irq
Impact: Reduce stack usage, use new cpumask API.  ALPHA mod!

Main change is that irq_default_affinity becomes a cpumask_var_t, so
treat it as a pointer (this effects alpha).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-01-01 10:12:26 +10:30
Rusty Russell 333af15341 cpumask: Introduce topology_core_cpumask()/topology_thread_cpumask(): ia64
Impact: New API

The old topology_core_siblings() and topology_thread_siblings() return
a cpumask_t; these new ones return a (const) struct cpumask *.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
2009-01-01 10:12:21 +10:30
Rusty Russell 9150641dd1 cpumask: Introduce topology_core_cpumask()/topology_thread_cpumask(): powerpc
Impact: New API

The old topology_core_siblings() and topology_thread_siblings() return
a cpumask_t; these new ones return a (const) struct cpumask *.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
2009-01-01 10:12:21 +10:30
Rusty Russell 2bb23a63f2 cpumask: Introduce topology_core_cpumask()/topology_thread_cpumask(): s390
Impact: New API

The old topology_core_siblings() and topology_thread_siblings() return
a cpumask_t; these new ones return a (const) struct cpumask *.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
2009-01-01 10:12:20 +10:30
Rusty Russell 78fd744f82 cpumask: Introduce topology_core_cpumask()/topology_thread_cpumask(): sparc
Impact: New API

The old topology_core_siblings() and topology_thread_siblings() return
a cpumask_t; these new ones return a (const) struct cpumask *.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
2009-01-01 10:12:20 +10:30
Rusty Russell 0db5d3d2f5 m68knommu: define __fls
Like fls, but can't be handed 0 and returns the bit number.

(I broke this arch in linux-next by using __fls in generic code).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-01-01 10:12:18 +10:30
Rusty Russell ccec25ff69 blackfin: define __fls
Like fls, but can't be handed 0 and returns the bit number.

(I broke this arch in linux-next by using __fls in generic code).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2009-01-01 10:12:17 +10:30
Rusty Russell 96b8d4c19d avr32: define __fls
Like fls, but can't be handed 0 and returns the bit number.

(I broke this arch in linux-next by using __fls in generic code).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-01-01 10:12:16 +10:30
Rusty Russell 165ac433fa parisc: remove gratuitous cpu_online_map declaration.
This is defined in linux/cpumask.h (included in this file already),
and this is now defined differently.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: linux-parisc@vger.kernel.org
2009-01-01 10:12:16 +10:30
Rusty Russell 9e2f913df7 percpu: fix percpu accessors to potentially !cpu_possible() cpus: m32r
Impact: CPU iterator bugfixes

Percpu areas are only allocated for possible cpus.  In general, you
shouldn't access random cpu's percpu areas.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Hirokazu Takata <takata@linux-m32r.org>
2009-01-01 10:12:14 +10:30
Rusty Russell f320786063 cpumask: Remove IA64 definition of total_cpus now it's in core code
Impact: fix IA64 compile

Fortunately, they have exactly the same semantics.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-01-01 10:12:13 +10:30
Al Viro 18d8fda7c3 take init_fs to saner place
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-12-31 18:07:42 -05:00
Nick Piggin c2452f3278 shrink struct dentry
struct dentry is one of the most critical structures in the kernel. So it's
sad to see it going neglected.

With CONFIG_PROFILING turned on (which is probably the common case at least
for distros and kernel developers), sizeof(struct dcache) == 208 here
(64-bit). This gives 19 objects per slab.

I packed d_mounted into a hole, and took another 4 bytes off the inline
name length to take the padding out from the end of the structure. This
shinks it to 200 bytes. I could have gone the other way and increased the
length to 40, but I'm aiming for a magic number, read on...

I then got rid of the d_cookie pointer. This shrinks it to 192 bytes. Rant:
why was this ever a good idea? The cookie system should increase its hash
size or use a tree or something if lookups are a problem. Also the "fast
dcookie lookups" in oprofile should be moved into the dcookie code -- how
can oprofile possibly care about the dcookie_mutex? It gets dropped after
get_dcookie() returns so it can't be providing any sort of protection.

At 192 bytes, 21 objects fit into a 4K page, saving about 3MB on my system
with ~140 000 entries allocated. 192 is also a multiple of 64, so we get
nice cacheline alignment on 64 and 32 byte line systems -- any given dentry
will now require 3 cachelines to touch all fields wheras previously it
would require 4.

I know the inline name size was chosen quite carefully, however with the
reduction in cacheline footprint, it should actually be just about as fast
to do a name lookup for a 36 character name as it was before the patch (and
faster for other sizes). The memory footprint savings for names which are
<= 32 or > 36 bytes long should more than make up for the memory cost for
33-36 byte names.

Performance is a feature...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-12-31 18:07:38 -05:00
Linus Torvalds db200df0b3 Merge branch 'irq-fixes-for-linus-4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'irq-fixes-for-linus-4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sparseirq: move __weak symbols into separate compilation unit
  sparseirq: work around __weak alias bug
  sparseirq: fix hang with !SPARSE_IRQ
  sparseirq: set lock_class for legacy irq when sparse_irq is selected
  sparseirq: work around compiler optimizing away __weak functions
  sparseirq: fix desc->lock init
  sparseirq: do not printk when migrating IRQ descriptors
  sparseirq: remove duplicated arch_early_irq_init()
  irq: simplify for_each_irq_desc() usage
  proc: remove ifdef CONFIG_SPARSE_IRQ from stat.c
  irq: for_each_irq_desc() move to irqnr.h
  hrtimer: remove #include <linux/irq.h>
2008-12-31 09:00:59 -08:00
Marcelo Tosatti 8791723920 KVM: MMU: handle large host sptes on invlpg/resync
The invlpg and sync walkers lack knowledge of large host sptes,
descending to non-existant pagetable level.

Stop at directory level in such case.

Fixes SMP Windows XP with hugepages.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2008-12-31 16:55:49 +02:00
Avi Kivity 3f353858c9 KVM: Add locking to virtual i8259 interrupt controller
While most accesses to the i8259 are with the kvm mutex taken, the call
to kvm_pic_read_irq() is not.  We can't easily take the kvm mutex there
since the function is called with interrupts disabled.

Fix by adding a spinlock to the virtual interrupt controller.  Since we
can't send an IPI under the spinlock (we also take the same spinlock in
an irq disabled context), we defer the IPI until the spinlock is released.
Similarly, we defer irq ack notifications until after spinlock release to
avoid lock recursion.

Signed-off-by: Avi Kivity <avi@redhat.com>
2008-12-31 16:55:48 +02:00
Avi Kivity 25e2343246 KVM: MMU: Don't treat a global pte as such if cr4.pge is cleared
The pte.g bit is meaningless if global pages are disabled; deferring
mmu page synchronization on these ptes will lead to the guest using stale
shadow ptes.

Fixes Vista x86 smp bootloader failure.

Signed-off-by: Avi Kivity <avi@redhat.com>
2008-12-31 16:55:48 +02:00
Jes Sorensen 042b26edf0 KVM: ia64: Fix kvm_arch_vcpu_ioctl_[gs]et_regs()
Fix kvm_arch_vcpu_ioctl_[gs]et_regs() to do something meaningful on
ia64. Old versions could never have worked since they required
pointers to be set in the ioctl payload which were never being set by
the ioctl handler for get_regs.

In addition reserve extra space for future extensions.

The change of layout of struct kvm_regs doesn't require adding a new
CAP since get/set regs never worked on ia64 until now.

This version doesn't support copying the KVM kernel stack in/out of
the kernel. This should be implemented in a seperate ioctl call if
ever needed.

Signed-off-by: Jes Sorensen <jes@sgi.com>
Acked-by : Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2008-12-31 16:55:47 +02:00
Jan Kiszka 4531220b71 KVM: x86: Rework user space NMI injection as KVM_CAP_USER_NMI
There is no point in doing the ready_for_nmi_injection/
request_nmi_window dance with user space. First, we don't do this for
in-kernel irqchip anyway, while the code path is the same as for user
space irqchip mode. And second, there is nothing to loose if a pending
NMI is overwritten by another one (in contrast to IRQs where we have to
save the number). Actually, there is even the risk of raising spurious
NMIs this way because the reason for the held-back NMI might already be
handled while processing the first one.

Therefore this patch creates a simplified user space NMI injection
interface, exporting it under KVM_CAP_USER_NMI and dropping the old
KVM_CAP_NMI capability. And this time we also take care to provide the
interface only on archs supporting NMIs via KVM (right now only x86).

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2008-12-31 16:55:47 +02:00
Jan Kiszka 264ff01d55 KVM: VMX: Fix pending NMI-vs.-IRQ race for user space irqchip
As with the kernel irqchip, don't allow an NMI to stomp over an already
injected IRQ; instead wait for the IRQ injection to be completed.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2008-12-31 16:55:47 +02:00
Marcelo Tosatti eb64f1e8cd KVM: MMU: check for present pdptr shadow page in walk_shadow
walk_shadow assumes the caller verified validity of the pdptr pointer in
question, which is not the case for the invlpg handler.

Fixes oops during Solaris 10 install.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2008-12-31 16:55:46 +02:00
Avi Kivity ca9edaee1a KVM: Consolidate userspace memory capability reporting into common code
Signed-off-by: Avi Kivity <avi@redhat.com>
2008-12-31 16:55:46 +02:00
Eduardo Habkost e93353c93a x86: KVM guest: kvm_get_tsc_khz: return khz, not lpj
kvm_get_tsc_khz() currently returns the previously-calculated preset_lpj
value, but it is in loops-per-jiffy, not kHz. The current code works
correctly only when HZ=1000.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2008-12-31 16:55:44 +02:00
Marcelo Tosatti ad218f85e3 KVM: MMU: prepopulate the shadow on invlpg
If the guest executes invlpg, peek into the pagetable and attempt to
prepopulate the shadow entry.

Also stop dirty fault updates from interfering with the fork detector.

2% improvement on RHEL3/AIM7.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2008-12-31 16:55:44 +02:00
Marcelo Tosatti 6cffe8ca4a KVM: MMU: skip global pgtables on sync due to cr3 switch
Skip syncing global pages on cr3 switch (but not on cr4/cr0). This is
important for Linux 32-bit guests with PAE, where the kmap page is
marked as global.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2008-12-31 16:55:44 +02:00
Marcelo Tosatti b1a368218a KVM: MMU: collapse remote TLB flushes on root sync
Collapse remote TLB flushes on root sync.

kernbench is 2.7% faster on 4-way guest. Improvements have been seen
with other loads such as AIM7.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2008-12-31 16:55:43 +02:00
Marcelo Tosatti 60c8aec6e2 KVM: MMU: use page array in unsync walk
Instead of invoking the handler directly collect pages into
an array so the caller can work with it.

Simplifies TLB flush collapsing.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2008-12-31 16:55:43 +02:00