Commit Graph

1497 Commits

Author SHA1 Message Date
Marc Zyngier
4f728276fb ARM: KVM: rework HYP page table freeing
There is no point in freeing HYP page tables differently from Stage-2.
They now have the same requirements, and should be dealt with the same way.

Promote unmap_stage2_range to be The One True Way, and get rid of a number
of nasty bugs in the process (good thing we never actually called free_hyp_pmds
before...).

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
2013-04-28 22:23:10 -07:00
Marc Zyngier
2fb410596c ARM: KVM: move to a KVM provided HYP idmap
After the HYP page table rework, it is pretty easy to let the KVM
code provide its own idmap, rather than expecting the kernel to
provide it. It takes actually less code to do so.

Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
2013-04-28 22:23:08 -07:00
Marc Zyngier
210552c1bf ARM: KVM: add support for minimal host vs guest profiling
In order to be able to correctly profile what is happening on the
host, we need to be able to identify when we're running on the guest,
and log these events differently.

Perf offers a simple way to register callbacks into KVM. Mimic what
x86 does and enjoy being able to profile your KVM host.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
2013-04-28 21:44:01 -07:00
Gleb Natapov
2dfee7b271 Merge branch 'kvm-arm-cleanup' from git://github.com/columbia/linux-kvm-arm.git 2013-04-25 18:23:48 +03:00
Linus Torvalds
7946844ae8 Fixes:
* Compile warnings and errors (one on x86, two on ARM)
  * WARNING in xen-pciback
  * Use the acpi_processor_get_performance_info instead of the 'register' version
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Merge tag 'stable/for-linus-3.9-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

Pull Xen fixes from Konrad Rzeszutek Wilk:
 - Compile warnings and errors (one on x86, two on ARM)
 - WARNING in xen-pciback
 - Use the acpi_processor_get_performance_info instead of the 'register'
   version

* tag 'stable/for-linus-3.9-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/acpi: remove redundant acpi/acpi_drivers.h include
  xen: arm: mandate EABI and use generic atomic operations.
  acpi: Export the acpi_processor_get_performance_info
  xen/pciback: Don't disable a PCI device that is already disabled.
2013-03-12 20:25:53 -07:00
Ian Campbell
85323a991d xen: arm: mandate EABI and use generic atomic operations.
Rob Herring has observed that c81611c4e9 "xen: event channel arrays are
xen_ulong_t and not unsigned long" introduced a compile failure when building
without CONFIG_AEABI:

/tmp/ccJaIZOW.s: Assembler messages:
/tmp/ccJaIZOW.s:831: Error: even register required -- `ldrexd r5,r6,[r4]'

Will Deacon pointed out that this is because OABI does not require even base
registers for 64-bit values. We can avoid this by simply using the existing
atomic64_xchg operation and the same containerof trick as used by the cmpxchg
macros. However since this code is used on memory which is shared with the
hypervisor we require proper atomic instructions and cannot use the generic
atomic64 callbacks (which are based on spinlocks), therefore add a dependency
on !GENERIC_ATOMIC64. Since we already depend on !CPU_V6 there isn't much
downside to this.

While thinking about this we also observed that OABI has different struct
alignment requirements to EABI, which is a problem for hypercall argument
structs which are shared with the hypervisor and which must be in EABI layout.
Since I don't expect people to want to run OABI kernels on Xen depend on
CONFIG_AEABI explicitly too (although it also happens to be enforced by the
!GENERIC_ATOMIC64 requirement too).

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Rob Herring <robherring2@gmail.com>
Acked-by: Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-03-11 13:52:19 -04:00
Marc Zyngier
6190920a35 ARM: KVM: move kvm_handle_wfi to handle_exit.c
It has little to do in emulate.c these days...

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2013-03-06 15:48:45 -08:00
Marc Zyngier
48762767e1 ARM: KVM: change kvm_tlb_flush_vmid to kvm_tlb_flush_vmid_ipa
v8 is capable of invalidating Stage-2 by IPA, but v7 is not.
Change kvm_tlb_flush_vmid() to take an IPA parameter, which is
then ignored by the invalidation code (and nuke the whole TLB
as it always did).

This allows v8 to implement a more optimized strategy.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2013-03-06 15:48:45 -08:00
Marc Zyngier
06fe0b73ff ARM: KVM: move include of asm/idmap.h to kvm_mmu.h
Since the arm64 code doesn't have a global asm/idmap.h file, move
the inclusion to asm/kvm_mmu.h.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2013-03-06 15:48:45 -08:00
Marc Zyngier
06e8c3b0f3 ARM: KVM: allow HYP mappings to be at an offset from kernel mappings
arm64 cannot represent the kernel VAs in HYP mode, because of the lack
of TTBR1 at EL2. A way to cope with this situation is to have HYP VAs
to be an offset from the kernel VAs.

Introduce macros to convert a kernel VA to a HYP VA, make the HYP
mapping functions use these conversion macros. Also change the
documentation to reflect the existence of the offset.

On ARM, where we can have an identity mapping between kernel and HYP,
the macros are without any effect.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2013-03-06 15:48:44 -08:00
Marc Zyngier
9c7a6432fb ARM: KVM: use kvm_kernel_vfp_t as an abstract type for VFP containers
In order to keep the VFP allocation code common, use an abstract type
for the VFP containers. Maps onto struct vfp_hard_struct on ARM.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2013-03-06 15:48:44 -08:00
Marc Zyngier
e7858c58d5 ARM: KVM: move hyp init to kvm_host.h
Make the split of the pgd_ptr an implementation specific thing
by moving the init call to an inline function.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2013-03-06 15:48:44 -08:00
Marc Zyngier
629dc446a4 ARM: KVM: remove superfluous include from kvm_vgic.h
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2013-03-06 15:48:44 -08:00
Marc Zyngier
c62ee2b227 ARM: KVM: abstract most MMU operations
Move low level MMU-related operations to kvm_mmu.h. This makes
the MMU code reusable by the arm64 port.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2013-03-06 15:48:44 -08:00
Christoffer Dall
c088f8f008 KVM: ARM: Reintroduce trace_kvm_hvc
This one got lost in the move to handle_exit, so let's reintroduce it
using an accessor to the immediate value field like the other ones.

Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
2013-03-06 15:48:43 -08:00
Marc Zyngier
3414bbfff9 ARM: KVM: move exit handler selection to a separate file
The exit handler selection code cannot be shared with arm64
(two different modes, more exception classes...).

Move it to a separate file (handle_exit.c).

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
2013-03-06 15:48:43 -08:00
Marc Zyngier
c599756329 ARM: KVM: move kvm_condition_valid to emulate.c
This is really hardware emulation, and as such it better be with
its little friends.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2013-03-06 15:48:43 -08:00
Marc Zyngier
52d1dba933 ARM: KVM: abstract HSR_EC_IABT away
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2013-03-06 15:48:43 -08:00
Marc Zyngier
1cc287dd08 ARM: KVM: abstract fault decoding away
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2013-03-06 15:48:43 -08:00
Marc Zyngier
4926d445eb ARM: KVM: abstract exception class decoding away
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2013-03-06 15:48:43 -08:00
Marc Zyngier
23b415d61a ARM: KVM: abstract IL decoding away
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
2013-03-06 15:48:43 -08:00
Marc Zyngier
a7123377e7 ARM: KVM: abstract SAS decoding away
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
2013-03-06 15:48:43 -08:00
Marc Zyngier
b37670b0f3 ARM: KVM: abstract S1TW abort detection away
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
2013-03-06 15:48:42 -08:00
Marc Zyngier
78abfcde49 ARM: KVM: abstract (and fix) external abort detection away
Bit 8 is cache maintenance, bit 9 is external abort.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
2013-03-06 15:48:42 -08:00
Marc Zyngier
d0adf747c9 ARM: KVM: abstract HSR_SRT_{MASK,SHIFT} away
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2013-03-06 15:48:42 -08:00
Marc Zyngier
7c511b881f ARM: KVM: abstract HSR_SSE away
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
2013-03-06 15:48:42 -08:00
Marc Zyngier
023cc96406 ARM: KVM: abstract HSR_WNR away
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
2013-03-06 15:48:42 -08:00
Marc Zyngier
4a1df28ac0 ARM: KVM: abstract HSR_ISV away
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
2013-03-06 15:48:42 -08:00
Marc Zyngier
7393b59917 ARM: KVM: abstract fault register accesses
Instead of directly accessing the fault registers, use proper accessors
so the core code can be shared.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2013-03-06 15:48:42 -08:00
Marc Zyngier
db730d8d62 ARM: KVM: convert GP registers from u32 to unsigned long
On 32bit ARM, unsigned long is guaranteed to be a 32bit quantity.
On 64bit ARM, it is a 64bit quantity.

In order to be able to share code between the two architectures,
convert the registers to be unsigned long, so the core code can
be oblivious of the change.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2013-03-06 15:48:42 -08:00
Cyrill Gorcunov
3f7d1fe108 ARM: 7665/1: Wire up kcmp syscall
Wire up kcmp syscall for ability to proceed checkpoint/restore
procedure on ARM platform.

Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-03-03 22:54:18 +00:00
Will Deacon
862c588f06 ARM: 7660/1: tlb: add branch predictor maintenance operations
The ARM architecture requires explicit branch predictor maintenance
when updating an instruction stream for a given virtual address. In
reality, this isn't so much of a burden because the branch predictor
is flushed during the cache maintenance required to make the new
instructions visible to the I-side of the processor.

However, there are still some cases where explicit flushing is required,
so add a local_bp_flush_all operation to deal with this.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-03-03 22:54:15 +00:00
Will Deacon
8a4e3a9ead ARM: 7659/1: mm: make mm->context.id an atomic64_t variable
mm->context.id is updated under asid_lock when a new ASID is allocated
to an mm_struct. However, it is also read without the lock when a task
is being scheduled and checking whether or not the current ASID
generation is up-to-date.

If two threads of the same process are being scheduled in parallel and
the bottom bits of the generation in their mm->context.id match the
current generation (that is, the mm_struct has not been used for ~2^24
rollovers) then the non-atomic, lockless access to mm->context.id may
yield the incorrect ASID.

This patch fixes this issue by making mm->context.id and atomic64_t,
ensuring that the generation is always read consistently. For code that
only requires access to the ASID bits (e.g. TLB flushing by mm), then
the value is accessed directly, which GCC converts to an ldrb.

Cc: <stable@vger.kernel.org> # 3.8
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-03-03 22:54:14 +00:00
Linus Torvalds
529e5fbcd8 Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
Pull late ARM updates from Russell King:
 "Here is the late set of ARM updates for this merge window; in here is:

   - The ARM parts of the broadcast timer support, core parts merged
     through tglx's tree.  This was left over from the previous merge to
     allow the dependency on tglx's tree to be resolved.

   - A fix to the VFP code which shows up on Raspberry Pi's, as well as
     fixing the fallout from a previous commit in this area.

   - A number of smaller fixes scattered throughout the ARM tree"

* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: Fix broken commit 0cc41e4a21 corrupting kernel messages
  ARM: fix scheduling while atomic warning in alignment handling code
  ARM: VFP: fix emulation of second VFP instruction
  ARM: 7656/1: uImage: Error out on build of multiplatform without LOADADDR
  ARM: 7640/1: memory: tegra_ahb_enable_smmu() depends on TEGRA_IOMMU_SMMU
  ARM: 7654/1: Preserve L_PTE_VALID in pte_modify()
  ARM: 7653/2: do not scale loops_per_jiffy when using a constant delay clock
  ARM: 7651/1: remove unused smp_timer_broadcast #define
2013-03-03 11:54:39 -08:00
Russell King
16af43fef8 Merge branches 'devel-stable', 'fixes' and 'mmci' into for-linus 2013-03-03 00:32:50 +00:00
Linus Torvalds
42a0a1b0fd Merge branch 'for-v3.9' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping
Pull DMA-mapping updates from Marek Szyprowski:
 "This time all patches are related only to ARM DMA-mapping subsystem.
  The main extension provided by this pull request is highmem support.
  Besides that it contains a bunch of small bugfixes and cleanups."

* 'for-v3.9' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping:
  ARM: DMA-mapping: fix memory leak in IOMMU dma-mapping implementation
  ARM: dma-mapping: Add maximum alignment order for dma iommu buffers
  ARM: dma-mapping: use himem for DMA buffers for IOMMU-mapped devices
  ARM: dma-mapping: add support for CMA regions placed in highmem zone
  arm: dma mapping: export arm iommu functions
  ARM: dma-mapping: Add arm_iommu_detach_device()
  ARM: dma-mapping: Add macro to_dma_iommu_mapping()
  ARM: dma-mapping: Set arm_dma_set_mask() for iommu->set_dma_mask()
  ARM: iommu: Include linux/kref.h in asm/dma-iommu.h
2013-02-26 10:45:25 -08:00
Linus Torvalds
5115f3c19d Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine updates from Vinod Koul:
 "This is fairly big pull by my standards as I had missed last merge
  window.  So we have the support for device tree for slave-dmaengine,
  large updates to dw_dmac driver from Andy for reusing on different
  architectures.  Along with this we have fixes on bunch of the drivers"

Fix up trivial conflicts, usually due to #include line movement next to
each other.

* 'next' of git://git.infradead.org/users/vkoul/slave-dma: (111 commits)
  Revert "ARM: SPEAr13xx: Pass DW DMAC platform data from DT"
  ARM: dts: pl330: Add #dma-cells for generic dma binding support
  DMA: PL330: Register the DMA controller with the generic DMA helpers
  DMA: PL330: Add xlate function
  DMA: PL330: Add new pl330 filter for DT case.
  dma: tegra20-apb-dma: remove unnecessary assignment
  edma: do not waste memory for dma_mask
  dma: coh901318: set residue only if dma is in progress
  dma: coh901318: avoid unbalanced locking
  dmaengine.h: remove redundant else keyword
  dma: of-dma: protect list write operation by spin_lock
  dmaengine: ste_dma40: do not remove descriptors for cyclic transfers
  dma: of-dma.c: fix memory leakage
  dw_dmac: apply default dma_mask if needed
  dmaengine: ioat - fix spare sparse complain
  dmaengine: move drivers/of/dma.c -> drivers/dma/of-dma.c
  ioatdma: fix race between updating ioat->head and IOAT_COMPLETION_PENDING
  dw_dmac: add support for Lynxpoint DMA controllers
  dw_dmac: return proper residue value
  dw_dmac: fill individual length of descriptor
  ...
2013-02-26 09:24:48 -08:00
Hiroshi Doyu
6fe3675803 ARM: dma-mapping: Add arm_iommu_detach_device()
A counter part of arm_iommu_attach_device().

Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
2013-02-25 15:30:41 +01:00
Hiroshi Doyu
fab112a394 ARM: dma-mapping: Add macro to_dma_iommu_mapping()
This can be built without CONFIG_ARM_DMA_USE_IOMMU.

Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
2013-02-25 15:30:41 +01:00
Laurent Pinchart
3e3a182328 ARM: iommu: Include linux/kref.h in asm/dma-iommu.h
The dma_iommu_mapping structure defined in asm/dma-iommu.h embeds a
struct kref, include the appropriate header file.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
2013-02-25 15:30:40 +01:00
Marc Zyngier
2b5e1e474f ARM: KVM: Rename KVM_MEMORY_SLOTS -> KVM_USER_MEM_SLOTS
Commit bbacc0c (KVM: Rename KVM_MEMORY_SLOTS -> KVM_USER_MEM_SLOTS)
broke KVM/ARM by changing a global #define.

Apply the same change to fix the compilation breakage.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
2013-02-25 11:47:59 +02:00
Linus Torvalds
77be36de8b Features:
- Xen ACPI memory and CPU hotplug drivers - allowing Xen hypervisor
    to be aware of new CPU and new DIMMs
  - Cleanups
 Bug-fixes:
  - Fixes a long-standing bug in the PV spinlock wherein we did not
    kick VCPUs that were in a tight loop.
  - Fixes in the error paths for the event channel machinery.
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Merge tag 'stable/for-linus-3.9-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

Pull Xen update from Konrad Rzeszutek Wilk:
 "This has two new ACPI drivers for Xen - a physical CPU offline/online
  and a memory hotplug.  The way this works is that ACPI kicks the
  drivers and they make the appropiate hypercall to the hypervisor to
  tell it that there is a new CPU or memory.  There also some changes to
  the Xen ARM ABIs and couple of fixes.  One particularly nasty bug in
  the Xen PV spinlock code was fixed by Stefan Bader - and has been
  there since the 2.6.32!

  Features:
   - Xen ACPI memory and CPU hotplug drivers - allowing Xen hypervisor
     to be aware of new CPU and new DIMMs
   - Cleanups
  Bug-fixes:
   - Fixes a long-standing bug in the PV spinlock wherein we did not
     kick VCPUs that were in a tight loop.
   - Fixes in the error paths for the event channel machinery"

Fix up a few semantic conflicts with the ACPI interface changes in
drivers/xen/xen-acpi-{cpu,mem}hotplug.c.

* tag 'stable/for-linus-3.9-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen: event channel arrays are xen_ulong_t and not unsigned long
  xen: Send spinlock IPI to all waiters
  xen: introduce xen_remap, use it instead of ioremap
  xen: close evtchn port if binding to irq fails
  xen-evtchn: correct comment and error output
  xen/tmem: Add missing %s in the printk statement.
  xen/acpi: move xen_acpi_get_pxm under CONFIG_XEN_DOM0
  xen/acpi: ACPI cpu hotplug
  xen/acpi: Move xen_acpi_get_pxm to Xen's acpi.h
  xen/stub: driver for CPU hotplug
  xen/acpi: ACPI memory hotplug
  xen/stub: driver for memory hotplug
  xen: implement updated XENMEM_add_to_physmap_range ABI
  xen/smp: Move the common CPU init code a bit to prep for PVH patch.
2013-02-24 16:18:31 -08:00
Linus Torvalds
9e2d59ad58 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull signal handling cleanups from Al Viro:
 "This is the first pile; another one will come a bit later and will
  contain SYSCALL_DEFINE-related patches.

   - a bunch of signal-related syscalls (both native and compat)
     unified.

   - a bunch of compat syscalls switched to COMPAT_SYSCALL_DEFINE
     (fixing several potential problems with missing argument
     validation, while we are at it)

   - a lot of now-pointless wrappers killed

   - a couple of architectures (cris and hexagon) forgot to save
     altstack settings into sigframe, even though they used the
     (uninitialized) values in sigreturn; fixed.

   - microblaze fixes for delivery of multiple signals arriving at once

   - saner set of helpers for signal delivery introduced, several
     architectures switched to using those."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (143 commits)
  x86: convert to ksignal
  sparc: convert to ksignal
  arm: switch to struct ksignal * passing
  alpha: pass k_sigaction and siginfo_t using ksignal pointer
  burying unused conditionals
  make do_sigaltstack() static
  arm64: switch to generic old sigaction() (compat-only)
  arm64: switch to generic compat rt_sigaction()
  arm64: switch compat to generic old sigsuspend
  arm64: switch to generic compat rt_sigqueueinfo()
  arm64: switch to generic compat rt_sigpending()
  arm64: switch to generic compat rt_sigprocmask()
  arm64: switch to generic sigaltstack
  sparc: switch to generic old sigsuspend
  sparc: COMPAT_SYSCALL_DEFINE does all sign-extension as well as SYSCALL_DEFINE
  sparc: kill sign-extending wrappers for native syscalls
  kill sparc32_open()
  sparc: switch to use of generic old sigaction
  sparc: switch sys_compat_rt_sigaction() to COMPAT_SYSCALL_DEFINE
  mips: switch to generic sys_fork() and sys_clone()
  ...
2013-02-23 18:50:11 -08:00
Linus Torvalds
8b5628ab83 arm-soc: virtualization changes
This contains parts of the ARM KVM support that have dependencies on
 other patches merged through the arm-soc tree. In combination with
 patches coming through Russell's tree, this will finally add full
 support for the kernel based virtual machine on ARM,  which has
 been awaited for some time now.
 
 Further, we now have a separate platform for virtual machines
 and qemu booting that is used by both Xen and KVM, separating
 these from the Versatile Express reference implementation.
 Obviously, this new platform is multiplatform capable so it
 can be combined with existing machines in the same kernel.
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Merge tag 'virt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM virtualization changes:
 "This contains parts of the ARM KVM support that have dependencies on
  other patches merged through the arm-soc tree.  In combination with
  patches coming through Russell's tree, this will finally add full
  support for the kernel based virtual machine on ARM, which has been
  awaited for some time now.

  Further, we now have a separate platform for virtual machines and qemu
  booting that is used by both Xen and KVM, separating these from the
  Versatile Express reference implementation.  Obviously, this new
  platform is multiplatform capable so it can be combined with existing
  machines in the same kernel."

* tag 'virt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (38 commits)
  ARM: arch_timer: include linux/errno.h
  arm: arch_timer: add missing inline in stub function
  ARM: KVM: arch_timers: Wire the init code and config option
  ARM: KVM: arch_timers: Add timer world switch
  ARM: KVM: arch_timers: Add guest timer core support
  ARM: KVM: Add VGIC configuration option
  ARM: KVM: VGIC initialisation code
  ARM: KVM: VGIC control interface world switch
  ARM: KVM: VGIC interrupt injection
  ARM: KVM: vgic: retire queued, disabled interrupts
  ARM: KVM: VGIC virtual CPU interface management
  ARM: KVM: VGIC distributor handling
  ARM: KVM: VGIC accept vcpu and dist base addresses from user space
  ARM: KVM: Initial VGIC infrastructure code
  ARM: KVM: Keep track of currently running vcpus
  KVM: ARM: Introduce KVM_ARM_SET_DEVICE_ADDR ioctl
  ARM: gic: add __ASSEMBLY__ guard to C definitions
  ARM: gic: define GICH offsets for VGIC support
  ARM: gic: add missing distributor defintions
  ARM: mach-virt: fixup machine descriptor after removal of sys_timer
  ...
2013-02-21 15:40:16 -08:00
Linus Torvalds
bab588fcfb arm-soc: soc-specific updates
This is a larger set of new functionality for the existing SoC families,
 including:
 
 * vt8500 gains support for new CPU cores, notably the Cortex-A9 based wm8850
 * prima2 gains support for the "marco" SoC family, its SMP based cousin
 * tegra gains support for the new Tegra4 (Tegra114) family
 * socfpga now supports a newer version of the hardware including SMP
 * i.mx31 and bcm2835 are now using DT probing for their clocks
 * lots of updates for sh-mobile
 * OMAP updates for clocks, power management and USB
 * i.mx6q and tegra now support cpuidle
 * kirkwood now supports PCIe hot plugging
 * tegra clock support is updated
 * tegra USB PHY probing gets implemented diffently
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Merge tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC-specific updates from Arnd Bergmann:
 "This is a larger set of new functionality for the existing SoC
  families, including:

   - vt8500 gains support for new CPU cores, notably the Cortex-A9 based
     wm8850

   - prima2 gains support for the "marco" SoC family, its SMP based
     cousin

   - tegra gains support for the new Tegra4 (Tegra114) family

   - socfpga now supports a newer version of the hardware including SMP

   - i.mx31 and bcm2835 are now using DT probing for their clocks

   - lots of updates for sh-mobile

   - OMAP updates for clocks, power management and USB

   - i.mx6q and tegra now support cpuidle

   - kirkwood now supports PCIe hot plugging

   - tegra clock support is updated

   - tegra USB PHY probing gets implemented diffently"

* tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (148 commits)
  ARM: prima2: remove duplicate v7_invalidate_l1
  ARM: shmobile: r8a7779: Correct TMU clock support again
  ARM: prima2: fix __init section for cpu hotplug
  ARM: OMAP: Consolidate OMAP USB-HS platform data (part 3/3)
  ARM: OMAP: Consolidate OMAP USB-HS platform data (part 1/3)
  arm: socfpga: Add SMP support for actual socfpga harware
  arm: Add v7_invalidate_l1 to cache-v7.S
  arm: socfpga: Add entries to enable make dtbs socfpga
  arm: socfpga: Add new device tree source for actual socfpga HW
  ARM: tegra: sort Kconfig selects for Tegra114
  ARM: tegra: enable ARCH_REQUIRE_GPIOLIB for Tegra114
  ARM: tegra: Fix build error w/ ARCH_TEGRA_114_SOC w/o ARCH_TEGRA_3x_SOC
  ARM: tegra: Fix build error for gic update
  ARM: tegra: remove empty tegra_smp_init_cpus()
  ARM: shmobile: Register ARM architected timer
  ARM: MARCO: fix the build issue due to gic-vic-to-irqchip move
  ARM: shmobile: r8a7779: Correct TMU clock support
  ARM: mxs_defconfig: Select CONFIG_DEVTMPFS_MOUNT
  ARM: mxs: decrease mxs_clockevent_device.min_delta_ns to 2 clock cycles
  ARM: mxs: use apbx bus clock to drive the timers on timrotv2
  ...
2013-02-21 15:27:22 -08:00
Linus Torvalds
3298a3511f arm-soc: multiplatform support
Converting more ARM platforms to multiplatform support. This time, OMAP
 gets converted, which is a major step since this is by far the largest
 platform in terms of code size. The same thing happens to the vt8500
 platform.
 
 Conflicts include:
 * Two mach/uncompress.h files are removed, the changes made to them
   elsewhere can be discarded now.
 * Moving the OMAP4 irq_match array has context clashes with turning
   omap4_sar_ram_init into an omap_early_initcall()
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Merge tag 'multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC multiplatform support from Arnd Bergmann:
 "Converting more ARM platforms to multiplatform support.  This time,
  OMAP gets converted, which is a major step since this is by far the
  largest platform in terms of code size.  The same thing happens to the
  vt8500 platform."

* tag 'multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  net: cwdavinci_cpdma: export symbols for cpsw
  remoteproc: omap: depend on OMAP_MBOX_FWK
  [media] davinci: do not include mach/hardware.h
  ARM: OMAP2+: Make sure files with omap initcalls include soc.h
  ARM: OMAP2+: Include soc.h to drm.c to fix compiling
  ARM: OMAP2+: Fix warning for hwspinlock omap_postcore_initcall
  ARM: multi_v7_defconfig: add ARCH_ZYNQ
  ARM: multi_v7_defconfig: remove unnecessary CONFIG_GPIOLIB
  arm: vt8500: Remove remaining mach includes
  arm: vt8500: Convert debug-macro.S to be multiplatform friendly
  arm: vt8500: Remove single platform Kconfig options
  ARM: OMAP2+: Remove now obsolete uncompress.h and debug-macro.S
  ARM: OMAP2+: Add minimal support for booting vexpress
  ARM: OMAP2+: Enable ARCH_MULTIPLATFORM support
  ARM: OMAP2+: Disable code that currently does not work with multiplaform
  ARM: OMAP2+: Add multiplatform debug_ll support
  ARM: OMAP: Fix dmaengine init for multiplatform
  ARM: OMAP: Fix i2c cmdline initcall for multiplatform
  ARM: OMAP2+: Use omap initcalls
  ARM: OMAP2+: Limit omap initcalls to omap only on multiplatform kernels
2013-02-21 15:20:41 -08:00
Linus Torvalds
5ce7aba976 arm-soc: driver specific changes
* Updates to the ux500 cpufreq code
 * Moving the u300 DMA controller driver to drivers/dma
 * Moving versatile express drivers out of arch/arm for sharing with arch/arm64
 * Device tree bindings for the OMAP General Purpose Memory Controller
 
 There is a simple conflict in drivers/cpufreq/dbx500-cpufreq.c, because
 the mach/id.h header and the cpu_is_u8500_family() function in it are
 now gone.
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Merge tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver specific changes from Arnd Bergmann:

 - Updates to the ux500 cpufreq code

 - Moving the u300 DMA controller driver to drivers/dma

 - Moving versatile express drivers out of arch/arm for sharing with arch/arm64

 - Device tree bindings for the OMAP General Purpose Memory Controller

* tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (27 commits)
  ARM: OMAP2+: gpmc: Add device tree documentation for elm handle
  ARM: OMAP2+: gpmc: add DT bindings for OneNAND
  ARM: OMAP2+: gpmc-onenand: drop __init annotation
  mtd: omap-onenand: pass device_node in platform data
  ARM: OMAP2+: Prevent potential crash if GPMC probe fails
  ARM: OMAP2+: gpmc: Remove unneeded of_node_put()
  arm: Move sp810.h to include/linux/amba/
  ARM: OMAP: gpmc: add DT bindings for GPMC timings and NAND
  ARM: OMAP: gpmc: enable hwecc for AM33xx SoCs
  ARM: OMAP: gpmc-nand: drop __init annotation
  mtd: omap-nand: pass device_node in platform data
  ARM: OMAP: gpmc: don't create devices from initcall on DT
  dma: coh901318: cut down on platform data abstraction
  dma: coh901318: merge header files
  dma: coh901318: push definitions into driver
  dma: coh901318: push header down into the DMA subsystem
  dma: coh901318: skip hard-coded addresses
  dma: coh901318: remove hardcoded target addresses
  dma: coh901318: push platform data into driver
  dma: coh901318: create a proper platform data file
  ...
2013-02-21 15:12:18 -08:00
Linus Torvalds
b274776c54 arm-soc: cleanups
A large number of cleanups, all over the platforms. This is dominated
 largely by the Samsung platforms (s3c, s5p, exynos) and a few of the
 others moving code out of arch/arm into more appropriate subsystems.
 The clocksource and irqchip drivers are now abstracted to the point
 where platforms that are already cleaned up do not need to even specify
 the driver they use, it can all get configured from the device tree
 as we do for normal device drivers. The clocksource changes basically
 touch every single platform in the process.
 
 We further clean up the use of platform specific header files here,
 with the goal of turning more of the platforms over to being
 "multiplatform" enabled, which implies that they cannot expose
 their headers to architecture independent code any more.
 
 It is expected that no functional changes are part of the cleanup.
 The overall reduction in total code lines is mostly the result of
 removing broken and obsolete code.
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Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC cleanups from Arnd Bergmann:
 "A large number of cleanups, all over the platforms.  This is dominated
  largely by the Samsung platforms (s3c, s5p, exynos) and a few of the
  others moving code out of arch/arm into more appropriate subsystems.

  The clocksource and irqchip drivers are now abstracted to the point
  where platforms that are already cleaned up do not need to even
  specify the driver they use, it can all get configured from the device
  tree as we do for normal device drivers.  The clocksource changes
  basically touch every single platform in the process.

  We further clean up the use of platform specific header files here,
  with the goal of turning more of the platforms over to being
  "multiplatform" enabled, which implies that they cannot expose their
  headers to architecture independent code any more.

  It is expected that no functional changes are part of the cleanup.
  The overall reduction in total code lines is mostly the result of
  removing broken and obsolete code."

* tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (133 commits)
  ARM: mvebu: correct gated clock documentation
  ARM: kirkwood: add missing include for nsa310
  ARM: exynos: move exynos4210-combiner to drivers/irqchip
  mfd: db8500-prcmu: update resource passing
  drivers/db8500-cpufreq: delete dangling include
  ARM: at91: remove NEOCORE 926 board
  sunxi: Cleanup the reset code and add meaningful registers defines
  ARM: S3C24XX: header mach/regs-mem.h local
  ARM: S3C24XX: header mach/regs-power.h local
  ARM: S3C24XX: header mach/regs-s3c2412-mem.h local
  ARM: S3C24XX: Remove plat-s3c24xx directory in arch/arm/
  ARM: S3C24XX: transform s3c2443 subirqs into new structure
  ARM: S3C24XX: modify s3c2443 irq init to initialize all irqs
  ARM: S3C24XX: move s3c2443 irq code to irq.c
  ARM: S3C24XX: transform s3c2416 irqs into new structure
  ARM: S3C24XX: modify s3c2416 irq init to initialize all irqs
  ARM: S3C24XX: move s3c2416 irq init to common irq code
  ARM: S3C24XX: Modify s3c_irq_wake to use the hwirq property
  ARM: S3C24XX: Move irq syscore-ops to irq-pm
  clocksource: always define CLOCKSOURCE_OF_DECLARE
  ...
2013-02-21 14:58:40 -08:00
Linus Torvalds
b24174b0cb arm-soc: non-critical bug fixes
Bug fixes that did not make it into v3.8, mostly because they were not
 considered important enough, and in some cases because bugs only show
 up in combination with other patches destined for 3.9.
 This includes a few larger patches for GPIO on the Marvell PXA platform
 and a lot of Samsung specific bug fixes, as well as a series from Arnd
 to fix older build warnings.
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Merge tag 'fixes-non-critical' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull non-critical ARM SoC bug fixes from Arnd Bergmann:
 "Bug fixes that did not make it into v3.8, mostly because they were not
  considered important enough, and in some cases because bugs only show
  up in combination with other patches destined for 3.9.  This includes
  a few larger patches for GPIO on the Marvell PXA platform and a lot of
  Samsung specific bug fixes, as well as a series from Arnd to fix older
  build warnings."

* tag 'fixes-non-critical' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (54 commits)
  ARM: SPEAr13xx: Enable CONFIG_ARCH_HAS_CPUFREQ
  ARM: imx: MACH_MX31ADS_WM1133_EV1 needs REGULATOR_WM8350
  scripts/sortextable: silence script output
  ARM: s3c: i2c: add platform_device forward declaration
  ARM: mvebu: allow selecting mvebu without Armada XP
  ARM: pick Versatile by default for !MMU
  ARM: integrator: fix build with INTEGRATOR_AP off
  ARM: integrator/versatile: fix NOMMU warnings
  ARM: sa1100: don't warn about mach/ide.h
  ARM: shmobile: fix defconfig warning on CONFIG_USB
  ARM: w90x900: fix legacy assembly syntax
  ARM: samsung: fix assembly syntax for new gas
  ARM: disable virt_to_bus/virt_to_bus almost everywhere
  ARM: dts: Correct pin configuration of SD 4 for exynos4x12-pinctrl
  ARM: SAMSUNG: Silence empty switch warning in fimc-core.h
  ARM: SAMSUNG: Silence empty switch warning in sdhci.h
  ARM: msm: proc_comm_boot_wait should not be __init
  arm: vt8500: Update MAINTAINERS entry for arch-vt8500
  ARM: integrator: ensure ap_syscon_base is initialised when !CONFIG_MMU
  ARM: S5PV210: Fix early uart output in fifo mode
  ...
2013-02-21 14:54:55 -08:00
Catalin Marinas
69dde4c52d ARM: 7654/1: Preserve L_PTE_VALID in pte_modify()
Following commit 26ffd0d4 (ARM: mm: introduce present, faulting entries
for PAGE_NONE), if a page has been mapped as PROT_NONE, the L_PTE_VALID
bit is cleared by the set_pte_ext() code. With LPAE the software and
hardware pte share the same location and subsequent modifications of pte
range (change_protection()) will leave the L_PTE_VALID bit cleared.

This patch adds the L_PTE_VALID bit to the newprot mask in pte_modify().

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Subash Patel <subash.rp@samsung.com>
Tested-by: Subash Patel <subash.rp@samsung.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: <stable@vger.kernel.org> # 3.8.x
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-02-21 13:25:37 +00:00