To be more array friendly and to indicate the IRQs are initially
disconnected.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
To indicate the IRQs are initially disconnected.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This implements interrupt release function so IRQs can be returned back
to the pool for reuse in cases such as PCI hot plug.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alexander Graf <agraf@suse.de>
The current allocator returns IRQ numbers from a pool and does not
support IRQs reuse in any form as it did not keep track of what it
previously returned, it only keeps the last returned IRQ. Some use
cases such as PCI hot(un)plug may require IRQ release and reallocation.
This moves an allocator from SPAPR to XICS.
This switches IRQ users to use new API.
This uses LSI/MSI flags to know if interrupt is allocated.
The interrupt release function will be posted as a separate patch.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alexander Graf <agraf@suse.de>
Since islsi[] array has been merged into the ICSState struct,
we must not reset flags as they tell if the interrupt is in use.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alexander Graf <agraf@suse.de>
PAPR allows having multiple interrupt sources such as PHB.
This adds a source lookup function and makes use of it.
Since at the moment QEMU only supports a single source,
no change in behaviour is expected.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alexander Graf <agraf@suse.de>
The existing interrupt allocation scheme in SPAPR assumes that
interrupts are allocated at the start time, continously and the config
will not change. However, there are cases when this is not going to work
such as:
1. migration - we will have to have an ability to choose interrupt
numbers for devices in the command line and this will create gaps in
interrupt space.
2. PCI hotplug - interrupts from unplugged device need to be returned
back to interrupt pool, otherwise we will quickly run out of interrupts.
This replaces a separate lslsi[] array with a byte in the ICSIRQState
struct and defines "LSI" and "MSI" flags. Neither of these flags set
signals that the descriptor is not allocated and not in use.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alexander Graf <agraf@suse.de>
At the moment spapr_rtas_register() allocates a new token number for every
new RTAS callback so numbers are not fixed and depend on the number of
supported RTAS handlers and the exact order of spapr_rtas_register() calls.
These tokens are copied into the device tree and remain the same during
the guest lifetime.
When we start another guest to receive a migration, it calls
spapr_rtas_register() as well. If the number of RTAS handlers or their
order is different in QEMU on source and destination sides, the "/rtas"
node in the device tree will differ. Since migration overwrites the device
tree (as it overwrites the entire RAM), the actual RTAS config on
the destination side gets broken.
This defines global contant values for every RTAS token which QEMU
is using today.
This changes spapr_rtas_register() to accept a token number instead of
allocating one. This changes all users of spapr_rtas_register().
This changes XICS-KVM not to cache tokens registered with KVM as they
constant now.
This makes TOKEN_BASE global as RTAS_XXX use TOKEN_BASE as
a base. TOKEN_MAX is moved and renamed too and its value is changed
to the last token + 1. Boundary checks for token values are adjusted.
This reserves token numbers for "os-term" handlers and PCI hotplug
which we are working on.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alexander Graf <agraf@suse.de>
The returned reset value was wrong (off by one zero nibble), and
qemu didn't log unimplemented writes to the PRIGROUP field.
Signed-off-by: Oran Avraham <oranav@gmail.com>
Message-id: 1403010447-4627-1-git-send-email-oranav@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
When we trigger a system reset, the in-kernel openpic controller should also
get reset. This happens through a write to the GCR.RESET register which is
the same mechanism a guest would use to manually reset the device.
Signed-off-by: Alexander Graf <agraf@suse.de>
The openpic emulation code maintains an allowable-CPU's bitmap
("destmask") for each IRQ source which is calculated from the IDR
register value whenever the guest OS writes to it. However, if the
guest OS relies on the system to set the IDR register to a default
value at reset, and does not write IDR, then destmask does not get
updated, and interrupts do not get propagated to the guest.
Additionally, if an IRQ source is marked as critical, the source's
internal "output" and "nomask" fields are not correctly reset when the
PIC is reset.
Fix both these issues by calling write_IRQreg_idr from within
openpic_reset, instead of simply setting the IDR register to the
specified idr_reset value.
Signed-off-by: Paul Janzen <pcj@pauljanzen.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
This patch moves the definition of openpic_reset after the various
register read/write functions. No functional change. It is in
preparation for using the register read/write functions in
openpic_reset.
Signed-off-by: Paul Janzen <pcj@pauljanzen.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
After previous Peter patch, they are redundant. This way we don't
assign them except when needed. Once there, there were lots of case
where the ".fields" indentation was wrong:
.fields = (VMStateField []) {
and
.fields = (VMStateField []) {
Change all the combinations to:
.fields = (VMStateField[]){
The biggest problem (appart from aesthetics) was that checkpatch complained
when we copy&pasted the code from one place to another.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Acked-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
After previous Peter patch, they are redundant. This way we don't
assign them except when needed. Once there, there were lots of case
where the ".fields" indentation was wrong:
.fields = (VMStateField []) {
and
.fields = (VMStateField []) {
Change all the combinations to:
.fields = (VMStateField[]){
The biggest problem (appart from aesthetics) was that checkpatch complained
when we copy&pasted the code from one place to another.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Acked-by: Alexey Kardashevskiy <aik@ozlabs.ru>
The IRQ_testbit() function is never used; remove it.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Try to inject floating interrupts via the flic if it is available.
This allows us to inject the full range of floating interrupts.
Reviewed-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
If we run with an old kernel that does not support KVM_CAP_IRQ_ROUTING,
we don't have to do anything in the ->register_io_adapter and
->io_adapter_map callbacks and therefore should return 0 instead of
-ENOSYS (just as the non-kvm flic does).
This fixes using adapter interrupts when running under an older kernel,
which broke with "s390x: add I/O adapter registration".
Reported-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
SysBusDevice::init is depracated. Convert to Object::init
as prescribed by QOM conventions.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Make use of the new s390 adapter irq routing support to enable real
in-kernel irqfds for virtio-ccw with adapter interrupts.
Note that s390 doesn't provide the common KVM_CAP_IRQCHIP capability, but
rather needs KVM_CAP_S390_IRQCHIP to be enabled. This is to ensure backward
compatibility.
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Register an I/O adapter interrupt source for when virtio-ccw devices start
using adapter interrupts.
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Introduce a common parent class for both cases, where kvm and non-kvm
can hook up callbacks. This will be used by follow-on patches for
adapter registration and mapping.
We now always have a flic, regardless of whether we use kvm; the
non-kvm implementation just doesn't do anything.
Reviewed-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
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Merge remote-tracking branch 'remotes/juanquintela/tags/migration/20140515' into staging
migration/next for 20140515
# gpg: Signature made Thu 15 May 2014 02:32:25 BST using RSA key ID 5872D723
# gpg: Can't check signature: public key not found
* remotes/juanquintela/tags/migration/20140515:
usb: fix up post load checks
migration: show average throughput when migration finishes
savevm: Remove all the unneeded version_minimum_id_old (rest)
savevm: Remove all the unneeded version_minimum_id_old (usb)
Split ram_save_block
arch_init: Simplify code for load_xbzrle()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
After previous Peter patch, they are redundant. This way we don't
assign them except when needed. Once there, there were lots of case
where the ".fields" indentation was wrong:
.fields = (VMStateField []) {
and
.fields = (VMStateField []) {
Change all the combinations to:
.fields = (VMStateField[]){
The biggest problem (appart from aesthetics) was that checkpatch complained
when we copy&pasted the code from one place to another.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Add missing 'break' after handling of AW_A10_PIC_BASE_ADDR write.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
After commit 767adce2d, they are redundant. This way we don't assign them
except when needed. Once there, there were lots of cases where the ".fields"
indentation was wrong:
.fields = (VMStateField []) {
and
.fields = (VMStateField []) {
Change all the combinations to:
.fields = (VMStateField[]){
The biggest problem (apart from aesthetics) was that checkpatch complained
when we copy&pasted the code from one place to another.
Signed-off-by: Juan Quintela <quintela@redhat.com>
[PMM: fixed minor conflict, corrected commit message typos]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
SIPI interrupts are ignored on the bootstrap. Never accept one.
Cc: Andreas Faerber <afaerber@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The MER register only has two valid bits. This is now used by
the linux kernel to auto-detect endianness, and causes Linux 3.15-rc1
and later to hang when run under qemu-microblaze. Mask valid bits before
writing the register to solve the problem.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
[Edgar: Untabified]
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
MAINTAINERS updated with link to the security process documentation
apic version modified to make more guests happy
On top of that, bugfixes all over the place
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
pc,net,MAINTAINERS,build updates
MAINTAINERS updated with link to the security process documentation
apic version modified to make more guests happy
On top of that, bugfixes all over the place
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Wed 07 May 2014 17:15:29 BST using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>"
* remotes/mst/tags/for_upstream:
configure: make source tree build more robust
MAINTAINERS: addresses for responsible disclosure
pm_smbus: correctly report unclaimed cycles
smbus: return -1 if nothing found at the given address
smbus: allow returning an error from reads
apic: use emulated lapic version 0x14 on pc machines >= 2.1
pc: add compat_props placeholder for 2.0 machine type
i8259: don't abort when trying to use level sensitive irqs
acpi: fix tables for no-hpet configuration
acpi-build: properly decrement objects' reference counters
acpi/pcihp.c: Rewrite acpi_pcihp_get_bsel using object_property_get_int
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add "version" property to local apic, and have it default to
0x14 for pc machines starting at 2.1. For compatibility with
previous releases, pc machines up to 2.0 will have their local
apic version set to 0x11.
Signed-off-by: Gabriel L. Somlo <somlo@cmu.edu>
Acked-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This is a guest-triggerable error, as seen when using Xenix 2.3.4.
Replace hw_error by LOG_UNIMPL, so that guests can continue.
With this patch, I can install and use Xenix 2.3.4a without any problem.
I can also start installation of Xenix 2.3.4q, but it fails due to not
finding an hard disk.
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/juanquintela/tags/migration/20140505' into staging
migration/next for 20140505
# gpg: Signature made Mon 05 May 2014 21:27:24 BST using RSA key ID 5872D723
# gpg: Can't check signature: public key not found
* remotes/juanquintela/tags/migration/20140505: (36 commits)
migration: expose xbzrle cache miss rate
migration: expose the bitmap_sync_count to the end
migration: Add counts of updating the dirty bitmap
XBZRLE: Fix one XBZRLE corruption issues
migration: remove duplicate code
Coverity: Fix failure path for qemu_accept in migration
Init the XBZRLE.lock in ram_mig_init
Provide init function for ram migration
Count used RAMBlock pages for migration_dirty_pages
Make qemu_peek_buffer loop until it gets it's data
Disallow outward migration while awaiting incoming migration
virtio: validate config_len on load
virtio-net: out-of-bounds buffer write on load
openpic: avoid buffer overrun on incoming migration
ssi-sd: fix buffer overrun on invalid state load
savevm: Ignore minimum_version_id_old if there is no load_state_old
usb: sanity check setup_index+setup_len in post_load
vmstate: s/VMSTATE_INT32_LE/VMSTATE_INT32_POSITIVE_LE/
virtio-scsi: fix buffer overrun on invalid state load
zaurus: fix buffer overrun on invalid state load
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
CVE-2013-4534
opp->nb_cpus is read from the wire and used to determine how many
IRQDest elements to read into opp->dst[]. If the value exceeds the
length of opp->dst[], MAX_CPU, opp->dst[] can be overrun with arbitrary
data from the wire.
Fix this by failing migration if the value read from the wire exceeds
MAX_CPU.
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Using error_is_set(ERRP) to find out whether a function failed is
either wrong, fragile, or unnecessarily opaque. It's wrong when ERRP
may be null, because errors go undetected when it is. It's fragile
when proving ERRP non-null involves a non-local argument. Else, it's
unnecessarily opaque (see commit 84d18f0).
I guess the error_is_set(errp) in the DeviceClass realize() methods
are merely fragile right now, because I can't find a call chain that
passes a null errp argument.
Make the code more robust and more obviously correct: receive the
error in a local variable, then propagate it through the parameter.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
* implement XScale cache lockdown cp15 ops
* fix v7M CPUID base register
* implement WFE and YIELD as yields for A64
* fix A64 "BLR LR"
* support Cortex-A57 in virt machine model
* a few other minor AArch64 bugfixes
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20140501' into staging
target-arm queue:
* implement XScale cache lockdown cp15 ops
* fix v7M CPUID base register
* implement WFE and YIELD as yields for A64
* fix A64 "BLR LR"
* support Cortex-A57 in virt machine model
* a few other minor AArch64 bugfixes
# gpg: Signature made Thu 01 May 2014 15:42:17 BST using RSA key ID 14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
* remotes/pmaydell/tags/pull-target-arm-20140501:
hw/arm/virt: Add support for Cortex-A57
hw/arm/virt: Put GIC register banks on 64K boundaries
hw/arm/virt: Create the GIC ourselves rather than (ab)using a15mpcore_priv
target-arm: Correct a comment refering to EL0
target-arm: A64: Fix a typo when declaring TLBI ops
target-arm: A64: Handle blr lr
target-arm: Make vbar_write 64bit friendly on 32bit hosts
target-arm: implement WFE/YIELD as a yield for AArch64
armv7m_nvic: fix CPUID Base Register
target-arm: Implement XScale cache lockdown operations as NOPs
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
cp15.c0_cpuid is never initialized for ARMv7-M; take the value directly
from cpu->midr instead.
Signed-off-by: Rabin Vincent <rabin@rab.in>
Message-id: 1398036308-32166-1-git-send-email-rabin@rab.in
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Convert existing users of KVM_ENABLE_CAP to new helper.
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
These functions don't need type casts (as does cpu_physical_memory_rw)
and also make the code better readable.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
The pending register is read-only and the value returned upon a read
reflects the state of irq input pins (interrupts are level triggered).
This patch implements such behaviour.
Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Reviewed-by: Li Guang <lig.fnst@cn.fujitsu.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 1395771730-16882-3-git-send-email-b.galvani@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This patch implements proper updating of the vector register which
should hold, according to the A10 user manual, the vector address for
the interrupt currently active on the CPU IRQ input.
Interrupt priority is not implemented at the moment and thus the first
pending interrupt is returned.
Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Li Guang <lig.fnst@cn.fujitsu.com>
Message-id: 1395771730-16882-2-git-send-email-b.galvani@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Commit 6f1834a2b exposed a bug in openpic_kvm where we don't filter
for memory events that only happen to the region we want to know
events about.
Add proper filtering, fixing the e500plat target with KVM.
Signed-off-by: Alexander Graf <agraf@suse.de>
Message-id: 1396431718-14908-1-git-send-email-agraf@suse.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
SystemTap sdt.h sometimes results in compiled probes without sufficient
information to extract arguments. This can be solved in a slightly
hacky way by encouraging the compiler to place arguments into registers.
This patch fixes the apic_reset_irq_delivered() trace event on Fedora 20
with gcc-4.8.2-7.fc20 and systemtap-sdt-devel-2.4-2.fc20 on x86_64.
Signed-off-by: Frank Ch. Eigler <fche@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Avoid undefined behaviour shifting left into the sign bit.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Add U suffix to avoid undefined behaviour. This is only strictly
necessary for the 1 << 31 cases; for consistency we extend it
to other constants in the same group.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Use unsigned arithmetic for operations on the mask word
in the foreach_apic() macro, to avoid relying on undefined
behaviour when shifting into the sign bit.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
