9 years agoKVM: PPC: Add helpers for CR, XER
Alexander Graf [Fri, 8 Jan 2010 01:58:02 +0000]
KVM: PPC: Add helpers for CR, XER

We now have helpers for the GPRs, so let's also add some for CR and XER.

Having them in the PACA simplifies code a lot, as we don't need to care
about where to store CC or not to overflow any integers.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: PPC: Use accessor functions for GPR access
Alexander Graf [Fri, 8 Jan 2010 01:58:01 +0000]
KVM: PPC: Use accessor functions for GPR access

All code in PPC KVM currently accesses gprs in the vcpu struct directly.

While there's nothing wrong with that wrt the current way gprs are stored
and loaded, it doesn't suffice for the PACA acceleration that will follow
in this patchset.

So let's just create little wrapper inline functions that we call whenever
a GPR needs to be read from or written to. The compiled code shouldn't really
change at all for now.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: Fix the explanation of write_emulated
Takuya Yoshikawa [Wed, 6 Jan 2010 08:55:23 +0000]
KVM: Fix the explanation of write_emulated

The explanation of write_emulated is confused with
that of read_emulated. This patch fix it.

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: VMX: Enable EPT 1GB page support
Sheng Yang [Tue, 5 Jan 2010 11:02:29 +0000]
KVM: VMX: Enable EPT 1GB page support

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: x86: Rename gb_page_enable() to get_lpage_level() in kvm_x86_ops
Sheng Yang [Tue, 5 Jan 2010 11:02:27 +0000]
KVM: x86: Rename gb_page_enable() to get_lpage_level() in kvm_x86_ops

Then the callback can provide the maximum supported large page level, which
is more flexible.

Also move the gb page support into x86_64 specific.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: x86: Moving PT_*_LEVEL to mmu.h
Sheng Yang [Tue, 5 Jan 2010 11:02:26 +0000]
KVM: x86: Moving PT_*_LEVEL to mmu.h

We can use them in x86.c and vmx.c now...

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: PPC: Enable lightweight exits again
Alexander Graf [Mon, 4 Jan 2010 21:19:25 +0000]
KVM: PPC: Enable lightweight exits again

The PowerPC C ABI defines that registers r14-r31 need to be preserved across
function calls. Since our exit handler is written in C, we can make use of that
and don't need to reload r14-r31 on every entry/exit cycle.

This technique is also used in the BookE code and is called "lightweight exits"
there. To follow the tradition, it's called the same in Book3S.

So far this optimization was disabled though, as the code didn't do what it was
expected to do, but failed to work.

This patch fixes and enables lightweight exits again.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: PPC: Fix typo in rebolting code
Alexander Graf [Mon, 4 Jan 2010 21:19:22 +0000]
KVM: PPC: Fix typo in rebolting code

When we're loading bolted entries into the SLB again, we're checking if an
entry is in use and only slbmte it when it is.

Unfortunately, the check always goes to the skip label of the first entry,
resulting in an endless loop when it actually gets triggered.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: avoid taking ioapic mutex for non-ioapic EOIs
Avi Kivity [Mon, 28 Dec 2009 12:08:30 +0000]
KVM: avoid taking ioapic mutex for non-ioapic EOIs

When the guest acknowledges an interrupt, it sends an EOI message to the local
apic, which broadcasts it to the ioapic.  To handle the EOI, we need to take
the ioapic mutex.

On large guests, this causes a lot of contention on this mutex.  Since large
guests usually don't route interrupts via the ioapic (they use msi instead),
this is completely unnecessary.

Avoid taking the mutex by introducing a handled_vectors bitmap.  Before taking
the mutex, check if the ioapic was actually responsible for the acked vector.
If not, we can return early.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: Fill out ftrace exit reason strings
Avi Kivity [Mon, 28 Dec 2009 14:06:35 +0000]
KVM: Fill out ftrace exit reason strings

Some exit reasons missed their strings; fill out the table.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: Bump maximum vcpu count to 64
Avi Kivity [Sun, 27 Dec 2009 15:00:46 +0000]
KVM: Bump maximum vcpu count to 64

With slots_lock converted to rcu, the entire kvm hotpath on modern processors
(with npt or ept) now scales beautifully.  Increase the maximum vcpu count to
64 to reflect this.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: convert slots_lock to a mutex
Marcelo Tosatti [Wed, 23 Dec 2009 16:35:26 +0000]
KVM: convert slots_lock to a mutex

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: switch vcpu context to use SRCU
Marcelo Tosatti [Wed, 23 Dec 2009 16:35:25 +0000]
KVM: switch vcpu context to use SRCU

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: convert io_bus to SRCU
Marcelo Tosatti [Wed, 23 Dec 2009 16:35:24 +0000]
KVM: convert io_bus to SRCU

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: x86: switch kvm_set_memory_alias to SRCU update
Marcelo Tosatti [Wed, 23 Dec 2009 16:35:23 +0000]
KVM: x86: switch kvm_set_memory_alias to SRCU update

Using a similar two-step procedure as for memslots.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: use SRCU for dirty log
Marcelo Tosatti [Wed, 23 Dec 2009 16:35:22 +0000]
KVM: use SRCU for dirty log

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: introduce kvm->srcu and convert kvm_set_memory_region to SRCU update
Marcelo Tosatti [Wed, 23 Dec 2009 16:35:21 +0000]
KVM: introduce kvm->srcu and convert kvm_set_memory_region to SRCU update

Use two steps for memslot deletion: mark the slot invalid (which stops
instantiation of new shadow pages for that slot, but allows destruction),
then instantiate the new empty slot.

Also simplifies kvm_handle_hva locking.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: use gfn_to_pfn_memslot in kvm_iommu_map_pages
Marcelo Tosatti [Wed, 23 Dec 2009 16:35:20 +0000]
KVM: use gfn_to_pfn_memslot in kvm_iommu_map_pages

So its possible to iommu map a memslot before making it visible to
kvm.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: introduce gfn_to_pfn_memslot
Marcelo Tosatti [Wed, 23 Dec 2009 16:35:19 +0000]
KVM: introduce gfn_to_pfn_memslot

Which takes a memslot pointer instead of using kvm->memslots.

To be used by SRCU convertion later.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: split kvm_arch_set_memory_region into prepare and commit
Marcelo Tosatti [Wed, 23 Dec 2009 16:35:18 +0000]
KVM: split kvm_arch_set_memory_region into prepare and commit

Required for SRCU convertion later.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: modify alias layout in x86s struct kvm_arch
Marcelo Tosatti [Wed, 23 Dec 2009 16:35:17 +0000]
KVM: modify alias layout in x86s struct kvm_arch

Have a pointer to an allocated region inside x86's kvm_arch.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: modify memslots layout in struct kvm
Marcelo Tosatti [Wed, 23 Dec 2009 16:35:16 +0000]
KVM: modify memslots layout in struct kvm

Have a pointer to an allocated region inside struct kvm.

[alex: fix ppc book 3s]

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: trivial document fixes
Wu Fengguang [Thu, 24 Dec 2009 01:04:16 +0000]
KVM: trivial document fixes

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: powerpc: Change maintainer
Alexander Graf [Sun, 20 Dec 2009 21:24:07 +0000]
KVM: powerpc: Change maintainer

Progress on KVM for Embedded PowerPC has stalled, but for Book3S there's quite
a lot of work to do and going on.

So in agreement with Hollis and Avi, we should switch maintainers for PowerPC.

Signed-off-by: Alexander Graf <agraf@suse.de>
Acked-by: Hollis Blanchard <hollis@penguinppc.org>
Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: powerpc: Remove AGGRESSIVE_DEC
Alexander Graf [Mon, 21 Dec 2009 19:21:25 +0000]
KVM: powerpc: Remove AGGRESSIVE_DEC

Because we now emulate the DEC interrupt according to real life behavior,
there's no need to keep the AGGRESSIVE_DEC hack around.

Let's just remove it.

Signed-off-by: Alexander Graf <agraf@suse.de>
Acked-by: Acked-by: Hollis Blanchard <hollis@penguinppc.org>
Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: powerpc: Improve DEC handling
Alexander Graf [Mon, 21 Dec 2009 19:21:24 +0000]
KVM: powerpc: Improve DEC handling

We treated the DEC interrupt like an edge based one. This is not true for
Book3s. The DEC keeps firing until mtdec is issued again and thus clears
the interrupt line.

So let's implement this logic in KVM too. This patch moves the line clearing
from the firing of the interrupt to the mtdec emulation.

This makes PPC64 guests work without AGGRESSIVE_DEC defined.

Signed-off-by: Alexander Graf <agraf@suse.de>
Acked-by: Acked-by: Hollis Blanchard <hollis@penguinppc.org>
Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: powerpc: Move vector to irqprio resolving to separate function
Alexander Graf [Mon, 21 Dec 2009 19:21:23 +0000]
KVM: powerpc: Move vector to irqprio resolving to separate function

We're using a switch table to find the irqprio that belongs to a specific
interrupt vector. This table is part of the interrupt inject logic.

Since we'll add a new function to stop interrupts, let's move this table
out of the injection logic into a separate function.

Signed-off-by: Alexander Graf <agraf@suse.de>
Acked-by: Acked-by: Hollis Blanchard <hollis@penguinppc.org>
Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: Simplify coalesced mmio initialization
Avi Kivity [Sun, 20 Dec 2009 13:13:43 +0000]
KVM: Simplify coalesced mmio initialization

- add destructor function
- move related allocation into constructor
- add stubs for !CONFIG_KVM_MMIO

Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: Add KVM_MMIO kconfig item
Avi Kivity [Sun, 20 Dec 2009 13:00:10 +0000]
KVM: Add KVM_MMIO kconfig item

s390 doesn't have mmio, this will simplify ifdefing it out.

Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: Remove ifdefs from mmu notifier initialization
Avi Kivity [Sun, 20 Dec 2009 12:54:04 +0000]
KVM: Remove ifdefs from mmu notifier initialization

Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: Add include guards for coalesced_mmio.h
Avi Kivity [Sun, 20 Dec 2009 12:42:19 +0000]
KVM: Add include guards for coalesced_mmio.h

Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: Disentangle mmu notifiers and coalesced_mmio registration
Avi Kivity [Sun, 20 Dec 2009 12:25:19 +0000]
KVM: Disentangle mmu notifiers and coalesced_mmio registration

They aren't related.

Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: SVM: Adjust tsc_offset only if tsc_unstable
Joerg Roedel [Mon, 14 Dec 2009 11:22:20 +0000]
KVM: SVM: Adjust tsc_offset only if tsc_unstable

The tsc_offset adjustment in svm_vcpu_load is executed
unconditionally even if Linux considers the host tsc as
stable. This causes a Linux guest detecting an unstable tsc
in any case.
This patch removes the tsc_offset adjustment if the host tsc
is stable. The guest will now get the benefit of a stable
tsc too.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: VMX: Add instruction rdtscp support for guest
Sheng Yang [Fri, 18 Dec 2009 08:48:47 +0000]
KVM: VMX: Add instruction rdtscp support for guest

Before enabling, execution of "rdtscp" in guest would result in #UD.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: Add cpuid_update() callback to kvm_x86_ops
Sheng Yang [Fri, 18 Dec 2009 08:48:46 +0000]
KVM: Add cpuid_update() callback to kvm_x86_ops

Sometime, we need to adjust some state in order to reflect guest CPUID
setting, e.g. if we don't expose rdtscp to guest, we won't want to enable
it on hardware. cpuid_update() is introduced for this purpose.

Also export kvm_find_cpuid_entry() for later use.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agox86: Raise vsyscall priority on hotplug notifier chain
Sheng Yang [Fri, 18 Dec 2009 08:48:45 +0000]
x86: Raise vsyscall priority on hotplug notifier chain

KVM need vsyscall_init() to initialize MSR_TSC_AUX before it read the value.
Per Avi's suggestion, this patch raised vsyscall priority on hotplug notifier
chain, to 30.

CC: Ingo Molnar <mingo@elte.hu>
CC: linux-kernel@vger.kernel.org
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: Extended shared_msr_global to per CPU
Sheng Yang [Fri, 18 Dec 2009 08:48:44 +0000]
KVM: Extended shared_msr_global to per CPU

shared_msr_global saved host value of relevant MSRs, but it have an
assumption that all MSRs it tracked shared the value across the different
CPUs. It's not true with some MSRs, e.g. MSR_TSC_AUX.

Extend it to per CPU to provide the support of MSR_TSC_AUX, and more
alike MSRs.

Notice now the shared_msr_global still have one assumption: it can only deal
with the MSRs that won't change in host after KVM module loaded.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: VMX: Remove redundant variable
Sheng Yang [Fri, 18 Dec 2009 08:48:42 +0000]
KVM: VMX: Remove redundant variable

It's no longer necessary.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: VMX: Fold ept_update_paging_mode_cr4() into its caller
Avi Kivity [Tue, 8 Dec 2009 10:14:42 +0000]
KVM: VMX: Fold ept_update_paging_mode_cr4() into its caller

ept_update_paging_mode_cr4() accesses vcpu->arch.cr4 directly, which usually
needs to be accessed via kvm_read_cr4().  In this case, we can't, since cr4
is in the process of being updated.  Instead of adding inane comments, fold
the function into its caller (vmx_set_cr4), so it can use the not-yet-committed
cr4 directly.

Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: VMX: When using ept, allow the guest to own cr4.pge
Avi Kivity [Mon, 7 Dec 2009 10:29:14 +0000]
KVM: VMX: When using ept, allow the guest to own cr4.pge

We make no use of cr4.pge if ept is enabled, but the guest does (to flush
global mappings, as with vmap()), so give the guest ownership of this bit.

Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: VMX: Make guest cr4 mask more conservative
Avi Kivity [Mon, 7 Dec 2009 10:26:18 +0000]
KVM: VMX: Make guest cr4 mask more conservative

Instead of specifying the bits which we want to trap on, specify the bits
which we allow the guest to change transparently.  This is safer wrt future
changes to cr4.

Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: Add accessor for reading cr4 (or some bits of cr4)
Avi Kivity [Mon, 7 Dec 2009 10:16:48 +0000]
KVM: Add accessor for reading cr4 (or some bits of cr4)

Some bits of cr4 can be owned by the guest on vmx, so when we read them,
we copy them to the vcpu structure.  In preparation for making the set of
guest-owned bits dynamic, use helpers to access these bits so we don't need
to know where the bit resides.

No changes to svm since all bits are host-owned there.

Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: VMX: Move some cr[04] related constants to vmx.c
Avi Kivity [Sun, 6 Dec 2009 15:21:14 +0000]
KVM: VMX: Move some cr[04] related constants to vmx.c

They have no place in common code.

Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: VMX: Trap and invalid MWAIT/MONITOR instruction
Sheng Yang [Tue, 15 Dec 2009 05:29:54 +0000]
KVM: VMX: Trap and invalid MWAIT/MONITOR instruction

We don't support these instructions, but guest can execute them even if the
feature('monitor') haven't been exposed in CPUID. So we would trap and inject
a #UD if guest try this way.

Cc: stable@kernel.org
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: MMU: Report spte not found in rmap before BUG()
Avi Kivity [Wed, 2 Dec 2009 13:17:00 +0000]
KVM: MMU: Report spte not found in rmap before BUG()

In the past we've had errors of single-bit in the other two cases; the
printk() may confirm it for the third case (many->many).

Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: x86: raise TSS exception for NULL CS and SS segments
Marcelo Tosatti [Wed, 11 Nov 2009 19:29:49 +0000]
KVM: x86: raise TSS exception for NULL CS and SS segments

Windows 2003 uses task switch to triple fault and reboot (the other
exception being reserved pdptrs bits).

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: x86: make double/triple fault promotion generic to all exceptions
Eddie Dong [Thu, 19 Nov 2009 15:54:07 +0000]
KVM: x86: make double/triple fault promotion generic to all exceptions

Move Double-Fault generation logic out of page fault
exception generating function to cover more generic case.

Signed-off-by: Eddie Dong <eddie.dong@intel.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoMerge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 19:00:55 +0000]
Merge branch 'x86-uv-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, uv: Remove recursion in uv_heartbeat_enable()
  x86, uv: uv_global_gru_mmr_address() macro fix
  x86, uv: Add serial number parameter to uv_bios_get_sn_info()

9 years agoMerge branch 'x86-ptrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 28 Feb 2010 18:59:44 +0000]
Merge branch 'x86-ptrace-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-ptrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, ptrace: Remove set_stopped_child_used_math() in [x]fpregs_set
  x86, ptrace: Simplify xstateregs_get()
  ptrace: Fix ptrace_regset() comments and diagnose errors specifically
  parisc: Disable CONFIG_HAVE_ARCH_TRACEHOOK
  ptrace: Add support for generic PTRACE_GETREGSET/PTRACE_SETREGSET
  x86, ptrace: regset extensions to support xstate

9 years agoMerge branch 'x86-pci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 18:59:18 +0000]
Merge branch 'x86-pci-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-pci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Enable NMI on all cpus on UV
  vgaarb: Add user selectability of the number of GPUS in a system
  vgaarb: Fix VGA arbiter to accept PCI domains other than 0
  x86, uv: Update UV arch to target Legacy VGA I/O correctly.
  pci: Update pci_set_vga_state() to call arch functions

9 years agoMerge branch 'x86-setup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 18:43:53 +0000]
Merge branch 'x86-setup-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-setup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, setup: Don't skip mode setting for the standard VGA modes
  x86-64, setup: Inhibit decompressor output if video info is invalid
  x86, setup: When restoring the screen, update boot_params.screen_info

9 years agoMerge branch 'x86-rwsem-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 18:41:35 +0000]
Merge branch 'x86-rwsem-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-rwsem-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86-64, rwsem: Avoid store forwarding hazard in __downgrade_write
  x86-64, rwsem: 64-bit xadd rwsem implementation
  x86: Fix breakage of UML from the changes in the rwsem system
  x86-64: support native xadd rwsem implementation
  x86: clean up rwsem type system

9 years agoMerge branch 'x86-numa-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 18:39:36 +0000]
Merge branch 'x86-numa-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-numa-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, numa: Remove configurable node size support for numa emulation
  x86, numa: Add fixed node size option for numa emulation
  x86, numa: Fix numa emulation calculation of big nodes
  x86, acpi: Map hotadded cpu to correct node.

9 years agoMerge branch 'x86-mtrr-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 18:39:16 +0000]
Merge branch 'x86-mtrr-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-mtrr-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Convert set_atomicity_lock to raw_spinlock
  x86, mtrr: Kill over the top warn
  x86, mtrr: Constify struct mtrr_ops

9 years agoMerge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 18:38:45 +0000]
Merge branch 'x86-mm-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, mm: Unify kernel_physical_mapping_init() API
  x86, mm: Allow highmem user page tables to be disabled at boot time
  x86: Do not reserve brk for DMI if it's not going to be used
  x86: Convert tlbstate_lock to raw_spinlock
  x86: Use the generic page_is_ram()
  x86: Remove BIOS data range from e820
  Move page_is_ram() declaration to mm.h
  Generic page_is_ram: use __weak
  resources: introduce generic page_is_ram()

9 years agoMerge branch 'x86-io-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 18:37:40 +0000]
Merge branch 'x86-io-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-io-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Merge io.h
  x86: Simplify flush_write_buffers()
  x86: Clean up mem*io functions.
  x86-64: Use BUILDIO in io_64.h
  x86-64: Reorganize io_64.h
  x86-32: Remove _local variants of in/out from io_32.h
  x86-32: Move XQUAD definitions to numaq.h

9 years agoMerge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 18:37:06 +0000]
Merge branch 'x86-cpu-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, cacheinfo: Enable L3 CID only on AMD
  x86, cacheinfo: Remove NUMA dependency, fix for AMD Fam10h rev D1
  x86, cpu: Print AMD virtualization features in /proc/cpuinfo
  x86, cacheinfo: Calculate L3 indices
  x86, cacheinfo: Add cache index disable sysfs attrs only to L3 caches
  x86, cacheinfo: Fix disabling of L3 cache indices
  intel-agp: Switch to wbinvd_on_all_cpus
  x86, lib: Add wbinvd smp helpers

9 years agoMerge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 28 Feb 2010 18:36:48 +0000]
Merge branch 'x86-cleanups-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Remove trailing spaces in messages
  x86, mtrr: Remove unused mtrr/state.c
  x86, trivial: Fix grammo in tsc comment about Geode TSC reliability

9 years agoMerge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 18:35:09 +0000]
Merge branch 'x86-asm-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Mark atomic irq ops raw for 32bit legacy
  x86: Merge show_regs()
  x86: Macroise x86 cache descriptors
  x86-32: clean up rwsem inline asm statements
  x86: Merge asm/atomic_{32,64}.h
  x86: Sync asm/atomic_32.h and asm/atomic_64.h
  x86: Split atomic64_t functions into seperate headers
  x86-64: Modify memcpy()/memset() alternatives mechanism
  x86-64: Modify copy_user_generic() alternatives mechanism
  x86: Lift restriction on the location of FIX_BTMAP_*
  x86, core: Optimize hweight32()

9 years agoMerge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 28 Feb 2010 18:31:01 +0000]
Merge branch 'sched-core-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (25 commits)
  sched: Fix SCHED_MC regression caused by change in sched cpu_power
  sched: Don't use possibly stale sched_class
  kthread, sched: Remove reference to kthread_create_on_cpu
  sched: cpuacct: Use bigger percpu counter batch values for stats counters
  percpu_counter: Make __percpu_counter_add an inline function on UP
  sched: Remove member rt_se from struct rt_rq
  sched: Change usage of rt_rq->rt_se to rt_rq->tg->rt_se[cpu]
  sched: Remove unused update_shares_locked()
  sched: Use for_each_bit
  sched: Queue a deboosted task to the head of the RT prio queue
  sched: Implement head queueing for sched_rt
  sched: Extend enqueue_task to allow head queueing
  sched: Remove USER_SCHED
  sched: Fix the place where group powers are updated
  sched: Assume *balance is valid
  sched: Remove load_balance_newidle()
  sched: Unify load_balance{,_newidle}()
  sched: Add a lock break for PREEMPT=y
  sched: Remove from fwd decls
  sched: Remove rq_iterator from move_one_task
  ...

Fix up trivial conflicts in kernel/sched.c

9 years agoMerge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 28 Feb 2010 18:23:41 +0000]
Merge branch 'sched-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: Fix race between ttwu() and task_rq_lock()
  sched: Fix SMT scheduler regression in find_busiest_queue()
  sched: Fix sched_mv_power_savings for !SMT
  kernel/sched.c: Suppress unused var warning

9 years agoMerge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 18:20:25 +0000]
Merge branch 'perf-core-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (172 commits)
  perf_event, amd: Fix spinlock initialization
  perf_event: Fix preempt warning in perf_clock()
  perf tools: Flush maps on COMM events
  perf_events, x86: Split PMU definitions into separate files
  perf annotate: Handle samples not at objdump output addr boundaries
  perf_events, x86: Remove superflous MSR writes
  perf_events: Simplify code by removing cpu argument to hw_perf_group_sched_in()
  perf_events, x86: AMD event scheduling
  perf_events: Add new start/stop PMU callbacks
  perf_events: Report the MMAP pgoff value in bytes
  perf annotate: Defer allocating sym_priv->hist array
  perf symbols: Improve debugging information about symtab origins
  perf top: Use a macro instead of a constant variable
  perf symbols: Check the right return variable
  perf/scripts: Tag syscall_name helper as not yet available
  perf/scripts: Add perf-trace-python Documentation
  perf/scripts: Remove unnecessary PyTuple resizes
  perf/scripts: Add syscall tracing scripts
  perf/scripts: Add Python scripting engine
  perf/scripts: Remove check-perf-trace from listed scripts
  ...

Fix trivial conflict in tools/perf/util/probe-event.c

9 years agoMerge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 28 Feb 2010 18:17:55 +0000]
Merge branch 'tracing-core-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (28 commits)
  ftrace: Add function names to dangling } in function graph tracer
  tracing: Simplify memory recycle of trace_define_field
  tracing: Remove unnecessary variable in print_graph_return
  tracing: Fix typo of info text in trace_kprobe.c
  tracing: Fix typo in prof_sysexit_enable()
  tracing: Remove CONFIG_TRACE_POWER from kernel config
  tracing: Fix ftrace_event_call alignment for use with gcc 4.5
  ftrace: Remove memory barriers from NMI code when not needed
  tracing/kprobes: Add short documentation for HAVE_REGS_AND_STACK_ACCESS_API
  s390: Add pt_regs register and stack access API
  tracing/kprobes: Make Kconfig dependencies generic
  tracing: Unify arch_syscall_addr() implementations
  tracing: Add notrace to TRACE_EVENT implementation functions
  ftrace: Allow to remove a single function from function graph filter
  tracing: Add correct/incorrect to sort keys for branch annotation output
  tracing: Simplify test for function_graph tracing start point
  tracing: Drop the tr check from the graph tracing path
  tracing: Add stack dump to trace_printk if stacktrace option is set
  tracing: Use appropriate perl constructs in recordmcount.pl
  tracing: optimize recordmcount.pl for offsets-handling
  ...

9 years agoMerge branch 'oprofile-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 18:15:31 +0000]
Merge branch 'oprofile-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'oprofile-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  oprofile/x86: fix msr access to reserved counters
  oprofile/x86: use kzalloc() instead of kmalloc()
  oprofile/x86: fix perfctr nmi reservation for mulitplexing
  oprofile/x86: add comment to counter-in-use warning
  oprofile/x86: warn user if a counter is already active
  oprofile/x86: implement randomization for IBS periodic op counter
  oprofile/x86: implement lsfr pseudo-random number generator for IBS
  oprofile/x86: implement IBS cpuid feature detection
  oprofile/x86: remove node check in AMD IBS initialization
  oprofile/x86: remove OPROFILE_IBS config option
  oprofile: remove EXPERIMENTAL from the config option description
  oprofile: remove tracing build dependency

9 years agoMerge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 18:13:16 +0000]
Merge branch 'core-rcu-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (44 commits)
  rcu: Fix accelerated GPs for last non-dynticked CPU
  rcu: Make non-RCU_PROVE_LOCKING rcu_read_lock_sched_held() understand boot
  rcu: Fix accelerated grace periods for last non-dynticked CPU
  rcu: Export rcu_scheduler_active
  rcu: Make rcu_read_lock_sched_held() take boot time into account
  rcu: Make lockdep_rcu_dereference() message less alarmist
  sched, cgroups: Fix module export
  rcu: Add RCU_CPU_STALL_VERBOSE to dump detailed per-task information
  rcu: Fix rcutorture mod_timer argument to delay one jiffy
  rcu: Fix deadlock in TREE_PREEMPT_RCU CPU stall detection
  rcu: Convert to raw_spinlocks
  rcu: Stop overflowing signed integers
  rcu: Use canonical URL for Mathieu's dissertation
  rcu: Accelerate grace period if last non-dynticked CPU
  rcu: Fix citation of Mathieu's dissertation
  rcu: Documentation update for CONFIG_PROVE_RCU
  security: Apply lockdep-based checking to rcu_dereference() uses
  idr: Apply lockdep-based diagnostics to rcu_dereference() uses
  radix-tree: Disable RCU lockdep checking in radix tree
  vfs: Abstract rcu_dereference_check for files-fdtable use
  ...

9 years agoMerge branches 'core-ipi-for-linus', 'core-locking-for-linus', 'tracing-fixes-for...
Linus Torvalds [Sun, 28 Feb 2010 18:04:02 +0000]
Merge branches 'core-ipi-for-linus', 'core-locking-for-linus', 'tracing-fixes-for-linus', 'x86-debug-for-linus', 'x86-doc-for-linus', 'x86-gpu-for-linus' and 'x86-rlimit-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'core-ipi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  generic-ipi: Optimize accesses by using DEFINE_PER_CPU_SHARED_ALIGNED for IPI data

* 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  plist: Fix grammar mistake, and c-style mistake

* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  kprobes: Add mcount to the kprobes blacklist

* 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86_64: Print modules like i386 does

* 'x86-doc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Put 'nopat' in kernel-parameters

* 'x86-gpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86-64: Allow fbdev primary video code

* 'x86-rlimit-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Use helpers for rlimits

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux...
Linus Torvalds [Sun, 28 Feb 2010 00:22:47 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/geert/linux-m68k

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: (24 commits)
  m68k: Define sigcontext ABI of ColdFire
  m68knommu: NPTL support for uClinux
  m68k: Add NPTL support
  m68k: Eliminate unused variable in page_to_phys()
  m68k: Switch to generic siginfo layout
  macfb: fix 24-bit visual and stuff
  macfb: cleanup
  fbdev: add some missing mac modes
  mac68k: start CUDA early
  valkyriefb: various fixes
  fbdev: mac_var_to_mode() fix
  mac68k: move macsonic and macmace platform devices
  mac68k: move mac_esp platform device
  mac68k: replace mac68k SCC code with platform device
  pmac-zilog: add platform driver
  pmac-zilog: cleanup
  mac68k: rework SWIM platform device
  mac68k: cleanup
  ataflop: Killl warning about unused variable flags
  m68k: Use DIV_ROUND_CLOSEST
  ...

9 years agoMerge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
Linus Torvalds [Sun, 28 Feb 2010 00:20:17 +0000]
Merge branch 'for-linus' of git://git390.marist.edu/linux-2.6

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (35 commits)
  [S390] time: remove unused code
  [S390] zcore: Add prefix registers to dump header
  [S390] correct vdso version string
  [S390] add support for compressed kernels
  [S390] Define new s390 ELF note sections in elf.h
  [S390] codepage conversion of kernel parameter line
  [S390] seq_file: convert drivers/s390/
  [S390] add z9-ec/z10 instruction to kernel disassembler
  [S390] dasd: correct offline processing
  [S390] dasd: fix refcounting.
  [S390] dasd: fix online/offline race
  [S390] use kprobes_built_in() in mm/fault code
  [S390] bug: use relative pointers in bug table entries
  [S390] Cleanup struct _lowcore usage and defines.
  [S390] free_initmem: reduce code duplication
  [S390] Replace ENOTSUPP usage with EOPNOTSUPP
  [S390] spinlock: check virtual cpu running status
  [S390] sysinfo: fix SYSIB 3,2,2 structure
  [S390] add MACHINE_IS_LPAR flag
  [S390] qdio: optimize cache line usage of struct qdio_irq
  ...

9 years agoMerge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
Linus Torvalds [Sun, 28 Feb 2010 00:19:22 +0000]
Merge branch 'upstream' of git://ftp.linux-mips.org/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (141 commits)
  MIPS: Alchemy: defconfig updates
  MIPS: Alchemy: Fix Au1100 ethernet build failure
  MIPS: Alchemy: Repair db1500/bosporus builds
  MIPS: ARC: Cleanup unused definitions from sgialib.h
  MIPS: Cobalt: convert legacy port addresses to GT-64111 bus addresses
  MIPS: Alchemy: use 36bit addresses for PCMCIA resources.
  MIPS: Cobalt: Fix theoretical port aliasing issue
  MIPS: Use ALIGN(x, bytes) instead of __ALIGN_MASK(x, bytes - 1)
  MIPS: Crazy spinlock speed test.
  MIPS: Optimize spinlocks.
  MIPS: Alchemy: devboard PM needs to save CPLD registers.
  MIPS: PowerTV: Eliminate duplicate opcode definition macros
  MIPS: Lemote 2F: Move printks out of port_access_lock.
  MIPS: PNX833x: Convert IRQ controller locks to raw spinlocks.
  MIPS: Octeon: Replace spinlock with raw_spinlocks in dma-octeon.c.
  MIPS: Octeon: Replace rwlocks in irq_chip handlers with raw_spinlocks.
  MIPS: Octeon: Convert octeon_irq_msi_lock to raw spinlock.
  MIPS: Loongson: Remove pointless sample_lock from oprofile code.
  MIPS: SNI: Convert sni_rm200_i8259A_lock to raw spinlock.
  MIPS: i8259: Convert IRQ controller lock to raw spinlock.
  ...

9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6
Linus Torvalds [Sun, 28 Feb 2010 00:18:30 +0000]
Merge git://git./linux/kernel/git/brodo/pcmcia-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6: (49 commits)
  pcmcia: validate late-added resources
  pcmcia: allow for extension of resource interval
  pcmcia: remove useless msleep in ds.c
  pcmcia: use read_cis_mem return value
  pcmcia: handle error in serial_cs config calls
  pcmcia: add locking to pcmcia_{read,write}_cis_mem
  pcmcia: avoid prod_id memleak
  pcmcia: avoid sysfs-related lockup for cardbus
  pcmcia: use state machine for extended requery
  pcmcia: delay re-scanning and re-querying of PCMCIA bus
  pcmcia: use pccardd to handle eject, insert, suspend and resume requests
  pcmcia: use ops_mutex for rsrc_{mgr,nonstatic} locking
  pcmcia: use mutex for dynid lock
  pcmcia: assert locking to struct pcmcia_device
  pcmcia: add locking documentation
  pcmcia: simplify locking
  pcmcia: add locking to struct pcmcia_socket->pcmcia_state()
  pcmcia: protect s->device_count
  pcmcia: properly lock skt->irq, skt->irq_mask
  pcmcia: lock ops->set_socket
  ...

9 years agoMerge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Sat, 27 Feb 2010 21:26:18 +0000]
Merge branch 'next' of git://git./linux/kernel/git/benh/powerpc

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (88 commits)
  powerpc: Fix lwsync feature fixup vs. modules on 64-bit
  powerpc: Convert pmc_owner_lock to raw_spinlock
  powerpc: Convert die.lock to raw_spinlock
  powerpc: Convert tlbivax_lock to raw_spinlock
  powerpc: Convert mpic locks to raw_spinlock
  powerpc: Convert pmac_pic_lock to raw_spinlock
  powerpc: Convert big_irq_lock to raw_spinlock
  powerpc: Convert feature_lock to raw_spinlock
  powerpc: Convert i8259_lock to raw_spinlock
  powerpc: Convert beat_htab_lock to raw_spinlock
  powerpc: Convert confirm_error_lock to raw_spinlock
  powerpc: Convert ipic_lock to raw_spinlock
  powerpc: Convert native_tlbie_lock to raw_spinlock
  powerpc: Convert beatic_irq_mask_lock to raw_spinlock
  powerpc: Convert nv_lock to raw_spinlock
  powerpc: Convert context_lock to raw_spinlock
  powerpc/85xx: Add NOR, LEDs and PIB support for MPC8568E-MDS boards
  powerpc/86xx: Enable VME driver on the GE SBC610
  powerpc/86xx: Enable VME driver on the GE PPC9A
  powerpc/86xx: Add MSI section to GE PPC9A DTS
  ...

9 years agom68k: Define sigcontext ABI of ColdFire
Maxim Kuvyrkov [Tue, 22 Sep 2009 21:22:43 +0000]
m68k: Define sigcontext ABI of ColdFire

The following patch defines sigcontext ABI of ColdFire.  Due to ISA
restrictions ColdFire needs different rt_sigreturn trampoline.

And due to ColdFire FP registers being 8-bytes instead of 12-bytes on
m68k, sigcontext and fpregset structures should be updated.

Regarding the sc_fpstate[16+6*8] field, it would've been enough 16
bytes to store ColdFire's FP state.  To accomodate GLIBC's libSegFault
it would'be been enough 6*8 bytes (room for the 6 non-call-clobbered
FP registers).  I set it to 16+6*8 to provide some extra space for any
future changes in the ColdFire FPU.

Signed-off-by: Maxim Kuvyrkov <maxim@codesourcery.com>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agom68knommu: NPTL support for uClinux
Maxim Kuvyrkov [Sun, 6 Dec 2009 18:08:14 +0000]
m68knommu: NPTL support for uClinux

Port syscalls for NPTL support to m68knommu.

Signed-off-by: Maxim Kuvyrkov <maxim@codesourcery.com>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agom68k: Add NPTL support
Maxim Kuvyrkov [Mon, 7 Dec 2009 08:24:27 +0000]
m68k: Add NPTL support

This patch adds several syscalls, that provide necessary
functionality to support NPTL on m68k/ColdFire.
The syscalls are get_thread_area, set_thread_area, atomic_cmpxchg_32 and
atomic_barrier.
The cmpxchg syscall is required for ColdFire as it doesn't support 'cas'
instruction.

Also a ptrace call PTRACE_GET_THREAD_AREA is added to allow debugger to
inspect the TLS storage.

Signed-off-by: Maxim Kuvyrkov <maxim@codesourcery.com>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agom68k: Eliminate unused variable in page_to_phys()
Geert Uytterhoeven [Tue, 12 Jan 2010 07:32:18 +0000]
m68k: Eliminate unused variable in page_to_phys()

"pgdat" is unused, so we can eliminate it and turn page_to_phys()
into a single-line macro.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agom68k: Switch to generic siginfo layout
Maxim Kuvyrkov [Wed, 23 Dec 2009 19:28:42 +0000]
m68k: Switch to generic siginfo layout

This patch switches m68k to generic siginfo layout.  The custom layout
of m68k's `struct siginfo' had several issues due to not considering
aliasing of members in the union, e.g., _uid32 was at different offsets
in ._kill, ._rt and ._sigchld.

Signed-off-by: Maxim Kuvyrkov <maxim@codesourcery.com>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agomacfb: fix 24-bit visual and stuff
Finn Thain [Tue, 3 Nov 2009 13:51:18 +0000]
macfb: fix 24-bit visual and stuff

Lots of changes. Remove volatile keywords. Take the advice in the comments
and change video_slot to slot_addr. Factor out fifteen or so "channel >>
8" shifts into three shifts higher up the call graph. Make
csc_setpalette() atomic, pass the correct color values. Check for
ioremap() failure. Add missing break statement, thus fixing 24 bit console
visual (blue background bug). Remove some uninformative printk() noise.
Add a description for powerbook 140/170 graphics.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agomacfb: cleanup
Finn Thain [Tue, 3 Nov 2009 13:47:28 +0000]
macfb: cleanup

Cleanup whitespace and code style. Remove unused #includes and prototypes.
Remove obsolete, redundant or misleading comments. Remove dead code and
redundant initialisers.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agofbdev: add some missing mac modes
Finn Thain [Tue, 3 Nov 2009 13:47:02 +0000]
fbdev: add some missing mac modes

Add the missing mac video modes for the Portrait and 12" RGB displays. The
specs come from the Mac LC III developer note.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agomac68k: start CUDA early
Finn Thain [Tue, 17 Nov 2009 09:03:05 +0000]
mac68k: start CUDA early

The valkyriefb driver needs the CUDA to work in order to set the video
mode at boot. So initialise the device earlier, and bring the m68k code
closer to the powermac code.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agovalkyriefb: various fixes
Finn Thain [Tue, 3 Nov 2009 13:43:52 +0000]
valkyriefb: various fixes

Valkyriefb and macfb will adopt the same card if they get the chance, so
remove valkyrie support from macfb. Also fix the "valkyriefb: can't do
832x624x8" problem reported by Raylynn Knight some time ago, by adding
vmode 13 support for CONFIG_MAC. Also add vmode 11 since that works too.
Make use of the monitor sense lines on 68k Macs too. Also some cleanups.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agofbdev: mac_var_to_mode() fix
Finn Thain [Tue, 3 Nov 2009 13:43:16 +0000]
fbdev: mac_var_to_mode() fix

The valkyriefb driver assumes that this logic holds:

mac_vmode_to_var(X, cmode, &var);
mac_var_to_vmode(&var, &vmode, &cmode);
assert(vmode == X);

But it doesn't hold because mac_var_to_vmode() can return a mode with a
slower pixel clock, even when a match is available. So we end up with this
failure:

using video mode 11 and color mode 0.
valkyriefb: vmode 12 not valid.
valkyriefb: can't set default video mode
valkyriefb: vmode 12 not valid.

Rather than have mac_var_to_mode() return the first reasonable mode it
finds, have it return the mode that is closest to the requested one (or
the mode with the closest longer pixel clock period if there is no exact
match).

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agomac68k: move macsonic and macmace platform devices
Finn Thain [Tue, 3 Nov 2009 13:42:02 +0000]
mac68k: move macsonic and macmace platform devices

Move platform device code from the drivers to the platform init function.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agomac68k: move mac_esp platform device
Finn Thain [Tue, 3 Nov 2009 13:41:35 +0000]
mac68k: move mac_esp platform device

Move platform device code from the driver to the platform init function.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agomac68k: replace mac68k SCC code with platform device
Finn Thain [Tue, 17 Nov 2009 09:06:48 +0000]
mac68k: replace mac68k SCC code with platform device

Remove the old 68k Mac serial port code and a lot of related cruft. Add
new SCC platform devices to mac 68k platform.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agopmac-zilog: add platform driver
Finn Thain [Tue, 17 Nov 2009 09:04:44 +0000]
pmac-zilog: add platform driver

Add platform driver support to the pmac-zilog driver, for m68k macs.
Place the powermac-specific code inside #ifdef CONFIG_PPC_PMAC.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agopmac-zilog: cleanup
Finn Thain [Tue, 3 Nov 2009 13:40:23 +0000]
pmac-zilog: cleanup

Whitespace cleanups and comment typo fix.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agomac68k: rework SWIM platform device
Finn Thain [Tue, 3 Nov 2009 13:39:56 +0000]
mac68k: rework SWIM platform device

Adjust the platform device code to conform with the code style used in the
rest of this patch series. No need to name resources nor to register
devices which are not applicable.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agomac68k: cleanup
Finn Thain [Tue, 3 Nov 2009 13:39:09 +0000]
mac68k: cleanup

Cleanup whitespace and comments. Remove some dead code.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agoataflop: Killl warning about unused variable flags
Geert Uytterhoeven [Fri, 11 Dec 2009 16:12:09 +0000]
ataflop: Killl warning about unused variable flags

After commit e0c0978699a83f26f2341f7eedc1463b79e31aff ("ataflop: remove
buggy/commented-out IRQ disable from do_fd_request()") the `flags' variable
became unused:

drivers/block/ataflop.c:1473: warning: unused variable 'flags'

Hence remove it.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agom68k: Use DIV_ROUND_CLOSEST
Julia Lawall [Sun, 2 Aug 2009 08:47:47 +0000]
m68k: Use DIV_ROUND_CLOSEST

The kernel.h macro DIV_ROUND_CLOSEST performs the computation (x + d/2)/d
but is perhaps more readable.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@haskernel@
@@

@depends on haskernel@
expression x,__divisor;
@@

- (((x) + ((__divisor) / 2)) / (__divisor))
+ DIV_ROUND_CLOSEST(x,__divisor)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agom68k: vme_scc - __init annotations
Peter Huewe [Thu, 20 Aug 2009 20:42:31 +0000]
m68k: vme_scc - __init annotations

Trivial patch which adds the __init macro to the module_init
function and all of its helper functions of drivers/char/vme_scc.c

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agom68k{,nommu}/h8300: Remove obsolete comment about map_chunk
Philippe De Muyter [Thu, 22 Oct 2009 14:07:17 +0000]
m68k{,nommu}/h8300: Remove obsolete comment about map_chunk

Remove the comments referring to a function map_chunk that no longer exists.

Signed-off-by: Philippe De Muyter <phdm@macqel.be>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agom68k: Allow ioremapping top of memory
Philippe De Muyter [Sun, 6 Dec 2009 19:28:41 +0000]
m68k: Allow ioremapping top of memory

The test in __ioremap to reject memory ranges crossing the 0 boundary
rejects also memory ranges ending at the end of the memory.  Fix that.

Signed-off-by: Philippe De Muyter <phdm@macqel.be>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agom68k: Fix asm/swab.h for ColdFire
Maxim Kuvyrkov [Fri, 2 Oct 2009 08:32:18 +0000]
m68k: Fix asm/swab.h for ColdFire

Make asm/swab.h compatible with ColdFire ISA_B CPUs.

Signed-off-by: Maxim Kuvyrkov <maxim@codesourcery.com>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

9 years agoMIPS: Alchemy: defconfig updates
Manuel Lauss [Fri, 26 Feb 2010 16:32:45 +0000]
MIPS: Alchemy: defconfig updates

Updated, leaner defconfig for the alchemy development boards.

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
To: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/1005/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

9 years agoMIPS: Alchemy: Fix Au1100 ethernet build failure
Manuel Lauss [Fri, 26 Feb 2010 16:22:02 +0000]
MIPS: Alchemy: Fix Au1100 ethernet build failure

Don't define platform info for second mac on au1100 (which only has a
single mac).

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
To: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/1004/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

9 years agoMIPS: Alchemy: Repair db1500/bosporus builds
Manuel Lauss [Fri, 26 Feb 2010 16:22:01 +0000]
MIPS: Alchemy: Repair db1500/bosporus builds

A few hunks somehow ended up outside their #ifdef/endif blocks,
leading to -Werror-induces build failures.

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
To: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/1003/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

9 years agoMIPS: ARC: Cleanup unused definitions from sgialib.h
Yoichi Yuasa [Sat, 20 Feb 2010 12:20:34 +0000]
MIPS: ARC: Cleanup unused definitions from sgialib.h

Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Cc: linux-mips <linux-mips@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/979/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

9 years agoMIPS: Cobalt: convert legacy port addresses to GT-64111 bus addresses
Bjorn Helgaas [Wed, 24 Feb 2010 20:53:27 +0000]
MIPS: Cobalt: convert legacy port addresses to GT-64111 bus addresses

The GT-64111 PCI host bridge has no address translation mechanism, so
it can't generate legacy port accesses.  This quirk fixes legacy device
port resources to contain the bus addresses actually generated by the
GT-64111.

I think this is the approach Ben Herrenschmidt suggested long ago:
    http://marc.info/?l=linux-kernel&m=119733290624544&w=2

This allows us to remove the IORESOURCE_PCI_FIXED hack from
pcibios_fixup_device_resources(), which converts bus addresses to CPU
addresses.  IORESOURCE_PCI_FIXED denotes resources that can't be moved;
it has nothing to do with converting bus to CPU addresses.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Yoichi Yuasa <yuasa@linux-mips.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linux-mips@linux-mips.org
Tested-by: Yoichi Yuasa <yuasa@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/998/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>