Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.7-20160705' into staging

ppc patch queue for 2016-07-05

Here's the current ppc, sPAPR and related drivers patch queue.

* The big addi

Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.7-20160705' into staging

ppc patch queue for 2016-07-05

Here's the current ppc, sPAPR and related drivers patch queue.

* The big addition is dynamic DMA window support (this includes some
core VFIO changes)
* There are also several fixes to the MMU emulation for bugs
introduced with the HV mode patches
* Several other bugfixes and cleanups

Changes in v2:
I messed up and forgot to make a fix in the last patch which BenH
pointed out (introduced by my rebasing). That's fixed in this
version, and I'm replacing the tag in place with the revised
version.

# gpg: Signature made Tue 05 Jul 2016 06:28:58 BST
# gpg: using RSA key 0x6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-2.7-20160705:
ppc/hash64: Fix support for LPCR:ISL
ppc/hash64: Add proper real mode translation support
target-ppc: Return page shift from PTEG search
target-ppc: Simplify HPTE matching
target-ppc: Correct page size decoding in ppc_hash64_pteg_search()
ppc: simplify ppc_hash64_hpte_page_shift_noslb()
spapr_pci/spapr_pci_vfio: Support Dynamic DMA Windows (DDW)
vfio/spapr: Create DMA window dynamically (SPAPR IOMMU v2)
vfio: Add host side DMA window capabilities
vfio: spapr: Add DMA memory preregistering (SPAPR IOMMU v2)
spapr_iommu: Realloc guest visible TCE table when starting/stopping listening
ppc: simplify max_smt initialization in ppc_cpu_realizefn()
spapr: Ensure thread0 of CPU core is always realized first
ppc: Fix xsrdpi, xvrdpi and xvrspi rounding

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

spapr_iommu: Realloc guest visible TCE table when starting/stopping listening

The sPAPR TCE tables manage 2 copies when VFIO is using an IOMMU -
a guest view of the table and a hardware TCE table. I

spapr_iommu: Realloc guest visible TCE table when starting/stopping listening

The sPAPR TCE tables manage 2 copies when VFIO is using an IOMMU -
a guest view of the table and a hardware TCE table. If there is no VFIO
presense in the address space, then just the guest view is used, if
this is the case, it is allocated in the KVM. However since there is no
support yet for VFIO in KVM TCE hypercalls, when we start using VFIO,
we need to move the guest view from KVM to the userspace; and we need
to do this for every IOMMU on a bus with VFIO devices.

This implements the callbacks for the sPAPR IOMMU - notify_started()
reallocated the guest view to the user space, notify_stopped() does
the opposite.

This removes explicit spapr_tce_set_need_vfio() call from PCI hotplug
path as the new callbacks do this better - they notify IOMMU at
the exact moment when the configuration is changed, and this also
includes the case of PCI hot unplug.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

show more ...

Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.7-20160623' into staging

ppc patch queue for 2016-06-23

Currently outstanding patches for spapr, target-ppc and related
devices. This b

Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.7-20160623' into staging

ppc patch queue for 2016-06-23

Currently outstanding patches for spapr, target-ppc and related
devices. This batch has:
* Significant new progress towards full support for hypervisor
mode
* Assorted bugfixes
* Some preliminary patches towards dynamic DMA window support

The last involves a change to memory.c, which Paolo has said I can
take through this tree.

# gpg: Signature made Thu 23 Jun 2016 06:47:53 BST
# gpg: using RSA key 0x6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-2.7-20160623:
ppc: Disable huge page support if it is not available for main RAM
ppc: Add P7/P8 Power Management instructions
ppc: Move exception generation code out of line
ppc: Turn a bunch of booleans from int to bool
ppc: Add real mode CI load/store instructions for P7 and P8
ppc: Rework generation of priv and inval interrupts
ppc: Fix generation if ISI/DSI vs. HV mode
ppc: Fix POWER7 and POWER8 exception definitions
ppc: fix exception model for HV mode
ppc: define a default LPCR value
ppc: Fix rfi/rfid/hrfi/... emulation
memory: Add reporting of supported page sizes
ppc: Improve emulation of THRM registers
target-ppc: Fix rlwimi, rlwinm, rlwnm again
ppc64: disable gen_pause() for linux-user mode
tests: Use '+=' to add additional tests, not '='
powerpc/mm: Update the WIMG check during H_ENTER

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

memory: Add reporting of supported page sizes

Every IOMMU has some granularity which MemoryRegionIOMMUOps::translate
uses when translating, however this information is not available outside
the tran

memory: Add reporting of supported page sizes

Every IOMMU has some granularity which MemoryRegionIOMMUOps::translate
uses when translating, however this information is not available outside
the translate context for various checks.

This adds a get_min_page_size callback to MemoryRegionIOMMUOps and
a wrapper for it so IOMMU users (such as VFIO) can know the minimum
actual page size supported by an IOMMU.

As IOMMU MR represents a guest IOMMU, this uses TARGET_PAGE_SIZE
as fallback.

This removes vfio_container_granularity() and uses new helper in
memory_region_iommu_replay() when replaying IOMMU mappings on added
IOMMU memory region.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
[dwg: Removed an unnecessary calculation]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

show more ...

Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.7-20160607' into staging

ppc patch queue for 2016-05-31

Latest patch queue for ppc. Several significant things in here:
* A bunch of

Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.7-20160607' into staging

ppc patch queue for 2016-05-31

Latest patch queue for ppc. Several significant things in here:
* A bunch of patches from BenH fixing things in TCG
- This should fix several regressions introduced by recent
patches for better HV mode support
- It also fixes some other bugs discovered along the way
* Some fixes and cleanups for Mac machine types from Marc
Cave-Ayland
* Preliminary patches towards dynamic DMA window support from Alexey
Kardashevskiy
- This includes a patch to migration code code
* Increase number of hotpluggable memory slots
- Includes a change to KVM generic code, ACKed by Paolo
* Another TCG fix for an SPE instruction

# gpg: Signature made Tue 07 Jun 2016 11:46:57 BST
# gpg: using RSA key 0x6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-2.7-20160607: (26 commits)
ppc: Do not take exceptions on unknown SPRs in privileged mode
ppc: Add missing slbfee. instruction on ppc64 BookS processors
ppc: Fix slbia decode
ppc: Fix mtmsr decoding
ppc: POWER7 has lq/stq instructions and stq need to check ISA
ppc: POWER7 had ACOP and PID registers
ppc: Batch TLB flushes on 32-bit 6xx/7xx/7xxx in hash mode
ppc: Fix tlb invalidations on 6xx/7xx/7xxx 32-bit processors
ppc: Properly tag the translation cache based on MMU mode
dbdma: use DMA memory interface for memory accesses
macio: use DMA memory interface for non-block ATAPI transfers
target-ppc: fixup bitrot in mmu_helper.c debug statements
spapr_pci: Drop cannot_instantiate_with_device_add_yet=false
ppc: fix hrfid, tlbia and slbia privilege
ppc: Fix hreg_store_msr() so that non-HV mode cannot alter MSR:HV
ppc: Better figure out if processor has HV mode
spapr: Introduce pseries-2.7 machine type
spapr: Increase hotpluggable memory slots to 256
spapr_pci: Add and export DMA resetting helper
spapr_pci: Reset DMA config on PHB reset
...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

spapr_iommu: Add root memory region

We are going to have multiple DMA windows at different offsets on
a PCI bus. For the sake of migration, we will have as many TCE table
objects pre-created as many

spapr_iommu: Add root memory region

We are going to have multiple DMA windows at different offsets on
a PCI bus. For the sake of migration, we will have as many TCE table
objects pre-created as many windows supported.
So we need a way to map windows dynamically onto a PCI bus
when migration of a table is completed but at this stage a TCE table
object does not have access to a PHB to ask it to map a DMA window
backed by just migrated TCE table.

This adds a "root" memory region (UINT64_MAX long) to the TCE object.
This new region is mapped on a PCI bus with enabled overlapping as
there will be one root MR per TCE table, each of them mapped at 0.
The actual IOMMU memory region is a subregion of the root region and
a TCE table enables/disables this subregion and maps it at
the specific offset inside the root MR which is 1:1 mapping of
a PCI address space.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

show more ...

spapr_iommu: Migrate full state

The source guest could have reallocated the default TCE table and
migrate bigger/smaller table. This adds reallocation in post_load()
if the default table size is dif

spapr_iommu: Migrate full state

The source guest could have reallocated the default TCE table and
migrate bigger/smaller table. This adds reallocation in post_load()
if the default table size is different on source and destination.

This adds @bus_offset, @page_shift to the migration stream as
a subsection so when DDW is added, migration to older machines will
still be possible. As @bus_offset and @page_shift are not used yet,
this makes no change in behavior.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

show more ...

spapr_iommu: Introduce "enabled" state for TCE table

Currently TCE tables are created once at start and their sizes never
change. We are going to change that by introducing a Dynamic DMA windows
sup

spapr_iommu: Introduce "enabled" state for TCE table

Currently TCE tables are created once at start and their sizes never
change. We are going to change that by introducing a Dynamic DMA windows
support where DMA configuration may change during the guest execution.

This changes spapr_tce_new_table() to create an empty zero-size IOMMU
memory region (IOMMU MR). Only LIOBN is assigned by the time of creation.
It still will be called once at the owner object (VIO or PHB) creation.

This introduces an "enabled" state for TCE table objects, some
helper functions are added:
- spapr_tce_table_enable() receives TCE table parameters, stores in
sPAPRTCETable and allocates a guest view of the TCE table
(in the user space or KVM) and sets the correct size on the IOMMU MR;
- spapr_tce_table_disable() disposes the table and resets the IOMMU MR
size; it is made public as the following DDW code will be using it.

This changes the PHB reset handler to do the default DMA initialization
instead of spapr_phb_realize(). This does not make differenct now but
later with more than just one DMA window, we will have to remove them all
and create the default one on a system reset.

No visible change in behaviour is expected except the actual table
will be reallocated every reset. We might optimize this later.

The other way to implement this would be dynamically create/remove
the TCE table QOM objects but this would make migration impossible
as the migration code expects all QOM objects to exist at the receiver
so we have to have TCE table objects created when migration begins.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

show more ...

Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.7-20160527' into staging

ppc patch queue for 2016-05-27 (first pull for qemu-2.7)

I'm back from holidays now, and have re-collated the p

Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.7-20160527' into staging

ppc patch queue for 2016-05-27 (first pull for qemu-2.7)

I'm back from holidays now, and have re-collated the ppc patch queue.
This is a first pull request against the qemu-2.7 branch, mostly
consisting of patches which were posted before the 2.6 freeze, but
weren't suitable for late inclusion in the 2.6 branch.

* Assorted bugfixes and cleanups
* Some preliminary patches towards dynamic DMA windows and CPU hotplug
* Significant performance impovement for the spapr-llan device
* Added myself to MAINTAINERS for ppc (overdue)

# gpg: Signature made Fri 27 May 2016 04:04:15 BST using RSA key ID 20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-2.7-20160527:
MAINTAINERS: Add David Gibson as ppc maintainer
spapr_iommu: Move table allocation to helpers
spapr_iommu: Finish renaming vfio_accel to need_vfio
spapr_pci: Use correct DMA LIOBN when composing the device tree
spapr: ensure device trees are always associated with DRC
PPC/KVM: early validation of vcpu id
Added negative check for get_image_size()
hw/net/spapr_llan: Provide counter with dropped rx frames to the guest
hw/net/spapr_llan: Delay flushing of the RX queue while adding new RX buffers
target-ppc: Cleanups to rldinm, rldnm, rldimi
target-ppc: Use 32-bit rotate instead of deposit + 64-bit rotate
target-ppc: Use movcond in isel
target-ppc: Correct KVM synchronization for ppc_hash64_set_external_hpt()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

spapr_iommu: Move table allocation to helpers

At the moment presence of vfio-pci devices on a bus affect the way
the guest view table is allocated. If there is no vfio-pci on a PHB
and the host kern

spapr_iommu: Move table allocation to helpers

At the moment presence of vfio-pci devices on a bus affect the way
the guest view table is allocated. If there is no vfio-pci on a PHB
and the host kernel supports KVM acceleration of H_PUT_TCE, a table
is allocated in KVM. However, if there is vfio-pci and we do yet not
KVM acceleration for these, the table has to be allocated by
the userspace. At the moment the table is allocated once at boot time
but next patches will reallocate it.

This moves kvmppc_create_spapr_tce/g_malloc0 and their counterparts
to helpers.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

show more ...

Merge remote-tracking branch 'remotes/awilliam/tags/vfio-update-20160526.1' into staging

VFIO updates 2016-05-26

- Infrastructure and quirks to support IGD assignment (Alex Williamson)
- Fixes to

Merge remote-tracking branch 'remotes/awilliam/tags/vfio-update-20160526.1' into staging

VFIO updates 2016-05-26

- Infrastructure and quirks to support IGD assignment (Alex Williamson)
- Fixes to 128bit handling, IOMMU replay, IOMMU translation sanity
checking (Alexey Kardashevskiy)

# gpg: Signature made Thu 26 May 2016 18:50:29 BST using RSA key ID 3BB08B22
# gpg: Good signature from "Alex Williamson <alex.williamson@redhat.com>"
# gpg: aka "Alex Williamson <alex@shazbot.org>"
# gpg: aka "Alex Williamson <alwillia@redhat.com>"
# gpg: aka "Alex Williamson <alex.l.williamson@gmail.com>"

* remotes/awilliam/tags/vfio-update-20160526.1:
vfio: Check that IOMMU MR translates to system address space
memory: Fix IOMMU replay base address
vfio: Fix 128 bit handling when deleting region
vfio/pci: Add IGD documentation
vfio/pci: Add a separate option for IGD OpRegion support
vfio/pci: Intel graphics legacy mode assignment
vfio/pci: Setup BAR quirks after capabilities probing
vfio/pci: Consolidate VGA setup
vfio/pci: Fix return of vfio_populate_vga()
vfio: Create device specific region info helper
vfio: Enable sparse mmap capability

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

memory: Fix IOMMU replay base address

Since a788f227 "memory: Allow replay of IOMMU mapping notifications"
when new VFIO listener is added, all existing IOMMU mappings are
replayed. However there is

memory: Fix IOMMU replay base address

Since a788f227 "memory: Allow replay of IOMMU mapping notifications"
when new VFIO listener is added, all existing IOMMU mappings are
replayed. However there is a problem that the base address of
an IOMMU memory region (IOMMU MR) is ignored which is not a problem
for the existing user (which is pseries) with its default 32bit DMA
window starting at 0 but it is if there is another DMA window.

This stores the IOMMU's offset_within_address_space and adjusts
the IOVA before calling vfio_dma_map/vfio_dma_unmap.

As the IOMMU notifier expects IOVA offset rather than the absolute
address, this also adjusts IOVA in sPAPR H_PUT_TCE handler before
calling notifier(s).

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

NEED_CPU_H cleanups, big enough to deserve their own pull request.

# gpg: Signature made Thu 19 May 2016 15:42:37 BST u

Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

NEED_CPU_H cleanups, big enough to deserve their own pull request.

# gpg: Signature made Thu 19 May 2016 15:42:37 BST using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>"

* remotes/bonzini/tags/for-upstream: (52 commits)
hw: clean up hw/hw.h includes
hw: remove pio_addr_t
cpu: move exec-all.h inclusion out of cpu.h
exec: extract exec/tb-context.h
hw: explicitly include qemu/log.h
mips: move CP0 functions out of cpu.h
arm: move arm_log_exception into .c file
qemu-common: push cpu.h inclusion out of qemu-common.h
acpi: do not use TARGET_PAGE_SIZE
s390x: reorganize CSS bits between cpu.h and other headers
dma: do not depend on kvm_enabled()
gdbstub: remove unnecessary includes from gdbstub-xml.c
qemu-common: stop including qemu/host-utils.h from qemu-common.h
qemu-common: stop including qemu/bswap.h from qemu-common.h
cpu: move endian-dependent load/store functions to cpu-all.h
hw: cannot include hw/hw.h from user emulation
hw: move CPU state serialization to migration/cpu.h
hw: do not use VMSTATE_*TL
include: poison symbols in osdep.h
apic: move target-dependent definitions to cpu.h
...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

hw: explicitly include qemu/log.h

Move the inclusion out of hw/hw.h, most files do not need it.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

ppc: Clean up includes

Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.

This commit was created with scripts/clean-includes.

Signed-off-b

ppc: Clean up includes

Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.

This commit was created with scripts/clean-includes.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1453832250-766-6-git-send-email-peter.maydell@linaro.org

show more ...

Merge remote-tracking branch 'remotes/dgibson/tags/ppc-next-20151023' into staging

ppc patch queue - 2015-10-23

sPAPR highlights:
* Allow VFIO devices on the spapr-pci-host-bridge
* Allow virti

Merge remote-tracking branch 'remotes/dgibson/tags/ppc-next-20151023' into staging

ppc patch queue - 2015-10-23

sPAPR highlights:
* Allow VFIO devices on the spapr-pci-host-bridge
* Allow virtio VGA
* Safer handling of HTAB allocation
* ibm,pa-features device tree property

non-sPAPR highlights:
* Categorization of many ppc specific devices in help output
* Tweaks to MMU type constants

# gpg: Signature made Fri 23 Oct 2015 07:27:56 BST using RSA key ID 20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-next-20151023: (21 commits)
prep: do not use CPU_LOG_IOPORT, convert to tracepoints
openpic: add to misc category
macio-nvram: add to misc category
macio: add to bridge category
uninorth: add to bridge category
macio-ide: add to storage category
cuda: add to bridge category
grackle: add to bridge category
escc: add to input category
cmd646: add to storage category
adb: add to input category
ppc/spapr: Add "ibm,pa-features" property to the device-tree
ppc: Add mmu_model defines for arch 2.03 and 2.07
hw/scsi/spapr_vscsi: Remove superfluous memset
spapr_pci: Allow VFIO devices to work on the normal PCI host bridge
spapr_iommu: Provide a function to switch a TCE table to allowing VFIO
spapr_iommu: Rename vfio_accel parameter
spapr_pci: Allow PCI host bridge DMA window to be configured
spapr: Add "slb-size" property to CPU device tree nodes
spapr: Abort when HTAB of requested size isn't allocated
...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

spapr_iommu: Provide a function to switch a TCE table to allowing VFIO

Because of the way non-VFIO guest IOMMU operations are KVM accelerated, not
all TCE tables (guest IOMMU contexts) can support V

spapr_iommu: Provide a function to switch a TCE table to allowing VFIO

Because of the way non-VFIO guest IOMMU operations are KVM accelerated, not
all TCE tables (guest IOMMU contexts) can support VFIO devices. Currently,
this is decided at creation time.

To support hotplug of VFIO devices, we need to allow a TCE table which
previously didn't allow VFIO devices to be switched so that it can. This
patch adds an spapr_tce_set_need_vfio() function to do this, by
reallocating the table in userspace if necessary.

Currently this doesn't allow the KVM acceleration to be re-enabled if all
the VFIO devices are removed. That's an optimization for another time.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>

show more ...

spapr_iommu: Rename vfio_accel parameter

The vfio_accel parameter used when creating a new TCE table (guest IOMMU
context) has a confusing name. What it really means is whether we need the
TCE tabl

spapr_iommu: Rename vfio_accel parameter

The vfio_accel parameter used when creating a new TCE table (guest IOMMU
context) has a confusing name. What it really means is whether we need the
TCE table created to be able to support VFIO devices.

VFIO is relevant, because when available we use in-kernel acceleration of
the TCE table, but that may not work with VFIO devices because updates to
the table are handled in kernel, bypass qemu and so don't hit qemu's
infrastructure for keeping the VFIO host IOMMU state in sync with the guest
IOMMU state.

Rename the parameter to "need_vfio" throughout. This is a cosmetic change,
with no impact on the logic.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>

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Merge remote-tracking branch 'remotes/agraf/tags/signed-ppc-for-upstream' into staging

Patch queue for ppc - 2015-07-07

A few last minute PPC changes for 2.4:

- spapr: Update SLOF
- spapr: Fix

Merge remote-tracking branch 'remotes/agraf/tags/signed-ppc-for-upstream' into staging

Patch queue for ppc - 2015-07-07

A few last minute PPC changes for 2.4:

- spapr: Update SLOF
- spapr: Fix a few bugs
- spapr: Preparation for hotplug
- spapr: Minor code cleanups
- linux-user: Add mftb handling
- kvm: Enable hugepage support with memory-backend-file
- mac99: Remove nonexistent interrupt pin (Mac OS 9 fix)

# gpg: Signature made Tue Jul 7 16:48:41 2015 BST using RSA key ID 03FEDC60
# gpg: Good signature from "Alexander Graf <agraf@suse.de>"
# gpg: aka "Alexander Graf <alex@csgraf.de>"

* remotes/agraf/tags/signed-ppc-for-upstream: (30 commits)
sPAPR: Clear stale MSIx table during EEH reset
sPAPR: Reenable EEH functionality on reboot
sPAPR: Don't enable EEH on emulated PCI devices
spapr-vty: Use TYPE_ definition instead of hardcoding
spapr_vty: lookup should only return valid VTY objects
spapr_pci: drop redundant args in spapr_[populate, create]_pci_child_dt
spapr_pci: populate ibm,loc-code
spapr_pci: enumerate and add PCI device tree
xics_kvm: Don't enable KVM_CAP_IRQ_XICS if already enabled
ppc: Update cpu_model in MachineState
spapr: Consolidate cpu init code into a routine
spapr: Reorganize CPU dt generation code
cpus: Add a macro to walk CPUs in reverse
spapr: Support ibm, lrdr-capacity device tree property
spapr: Consider max_cpus during xics initialization
Revert "hw/ppc/spapr_pci.c: Avoid functions not in glib 2.12 (g_hash_table_iter_*)"
spapr_iommu: translate sPAPRTCEAccess to IOMMUAccessFlags
spapr_iommu: drop erroneous check in h_put_tce_indirect()
spapr_pci: set device node unit address as hex
spapr_pci: encode class code including Prog IF register
...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

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spapr_iommu: translate sPAPRTCEAccess to IOMMUAccessFlags

The fact that these enums have matching values is pure coincidence. We
actually need to translate from the PAPR definition to the QEMU one.

spapr_iommu: translate sPAPRTCEAccess to IOMMUAccessFlags

The fact that these enums have matching values is pure coincidence. We
actually need to translate from the PAPR definition to the QEMU one.

This patch doesn't fix any bug, it is only code cleanup.

Suggested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>

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spapr_iommu: drop erroneous check in h_put_tce_indirect()

The tce_list variable is not a TCE but the address to a TCE: we shouldn't
clear permission bits as we do now. And this is dead code anyway s

spapr_iommu: drop erroneous check in h_put_tce_indirect()

The tce_list variable is not a TCE but the address to a TCE: we shouldn't
clear permission bits as we do now. And this is dead code anyway since we
check tce_list is 4K aligned a few lines above.

This patch doesn't fix any bug, it is only code cleanup.

Suggested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>

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spapr: Merge sPAPREnvironment into sPAPRMachineState

The code for -machine pseries maintains a global sPAPREnvironment structure
which keeps track of general state information about the guest platfo

spapr: Merge sPAPREnvironment into sPAPRMachineState

The code for -machine pseries maintains a global sPAPREnvironment structure
which keeps track of general state information about the guest platform.
This predates the existence of the MachineState structure, but performs
basically the same function.

Now that we have the generic MachineState, fold sPAPREnvironment into
sPAPRMachineState, the pseries specific subclass of MachineState.

This is mostly a matter of search and replace, although a few places which
relied on the global spapr variable are changed to find the structure via
qdev_get_machine().

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>

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Merge remote-tracking branch 'remotes/agraf/tags/signed-ppc-for-upstream' into staging

Patch queue for ppc - 2015-06-03

Highlights this time around:

- sPAPR: endian fixes, speedups, bug fixes, h

Merge remote-tracking branch 'remotes/agraf/tags/signed-ppc-for-upstream' into staging

Patch queue for ppc - 2015-06-03

Highlights this time around:

- sPAPR: endian fixes, speedups, bug fixes, hotplug basics
- add default ram size capability for machines (sPAPR defaults to 512MB now)

# gpg: Signature made Wed Jun 3 22:59:09 2015 BST using RSA key ID 03FEDC60
# gpg: Good signature from "Alexander Graf <agraf@suse.de>"
# gpg: aka "Alexander Graf <alex@csgraf.de>"

* remotes/agraf/tags/signed-ppc-for-upstream: (40 commits)
softmmu: support up to 12 MMU modes
tcg: add TCG_TARGET_TLB_DISPLACEMENT_BITS
tci: do not use CPUArchState in tcg-target.h
Add David Gibson for sPAPR in MAINTAINERS file
pseries: Enable in-kernel H_LOGICAL_CI_{LOAD, STORE} implementations
spapr: override default ram size to 512MB
machine: add default_ram_size to machine class
spapr_pci: emit hotplug add/remove events during hotplug
spapr_pci: enable basic hotplug operations
pci: make pci_bar useable outside pci.c
spapr_pci: create DRConnectors for each PCI slot during PHB realize
spapr_pci: add dynamic-reconfiguration option for spapr-pci-host-bridge
spapr_drc: add spapr_drc_populate_dt()
spapr_events: event-scan RTAS interface
spapr_events: re-use EPOW event infrastructure for hotplug events
spapr_rtas: add ibm, configure-connector RTAS interface
spapr: add rtas_st_buffer_direct() helper
spapr_rtas: add get-sensor-state RTAS interface
spapr_rtas: add set-indicator RTAS interface
spapr_rtas: add get/set-power-level RTAS interfaces
...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

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hw/ppc/spapr_iommu: Fix the check for invalid upper bits in liobn

The check "liobn & 0xFFFFFFFF00000000ULL" in spapr_tce_find_by_liobn()
is completely useless since liobn is only declared as an uint

hw/ppc/spapr_iommu: Fix the check for invalid upper bits in liobn

The check "liobn & 0xFFFFFFFF00000000ULL" in spapr_tce_find_by_liobn()
is completely useless since liobn is only declared as an uint32_t
parameter. Fix this by using target_ulong instead (this is what most
of the callers of this function are using, too).

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>

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spapr_iommu: Give unique QOM name to TCE table

Useful for debugging.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Ale

spapr_iommu: Give unique QOM name to TCE table

Useful for debugging.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>

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