After claiming the interrupt by reading the claim register we want to
clear the register to make sure the interrupt doesn't appear at the next
read.
This matches the documentation for the claim register as when an interrupt
is claimed by a target the relevant bit of IP is cleared (which we already
do): https://docs.opentitan.org/hw/ip/rv_plic/doc/index.html
This also matches the current hardware.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 68d4575deef2559b7a747f3bda193fcf43af4558.1604629928.git.alistair.francis@wdc.com
According to the loongson spec
(http://www.loongson.cn/uploadfile/cpu/3B1500/Loongson_3B1500_cpu_user_1.pdf)
and the macro definition(#define R_PERCORE_ISR(x) (0x40 + 0x8 * x)), we know
that the ISR size per CORE is 8, so here we need to divide
(addr - R_PERCORE_ISR(0)) by 8, not 4.
Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Alex Chen <alex.chen@huawei.com>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <5FA12391.8090400@huawei.com>
[PMD: Shortened subject]
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Add sifive_plic vmstate for supporting sifive_plic migration.
Current vmstate framework only supports one structure parameter
as num field to describe variable length arrays, so introduce
num_enables.
Signed-off-by: Yifei Jiang <jiangyifei@huawei.com>
Signed-off-by: Yipeng Yin <yinyipeng1@huawei.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20201026115530.304-7-jiangyifei@huawei.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
In gicv3_init_cpuif() we copy the ARMCPU gicv3_maintenance_interrupt
into the GICv3CPUState struct's maintenance_irq field. This will
only work if the board happens to have already wired up the CPU
maintenance IRQ before the GIC was realized. Unfortunately this is
not the case for the 'virt' board, and so the value that gets copied
is NULL (since a qemu_irq is really a pointer to an IRQState struct
under the hood). The effect is that the CPU interface code never
actually raises the maintenance interrupt line.
Instead, since the GICv3CPUState has a pointer to the CPUState, make
the dereference at the point where we want to raise the interrupt, to
avoid an implicit requirement on board code to wire things up in a
particular order.
Reported-by: Jose Martins <josemartins90@gmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20201009153904.28529-1-peter.maydell@linaro.org
Reviewed-by: Luc Michel <luc@lmichel.fr>
Since sifive_plic.h is used by hw/intc/sifive_plic.c,
it has to be in the public include directory. Move it.
Fixes: 84fcf3c151 ("hw/riscv: Move sifive_plic model to hw/intc")
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 1602578033-68384-1-git-send-email-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
The IRQ values are defined few lines earlier, use them instead of
the magic numbers.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20201017180731.1165871-3-f4bug@amsat.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add trace events for GPU and CPU IRQs.
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20201017180731.1165871-2-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
M-profile CPUs only implement the ID registers as guest-visible if
the CPU implements the Main Extension (all our current CPUs except
the Cortex-M0 do).
Currently we handle this by having the Cortex-M0 leave the ID
register values in the ARMCPU struct as zero, but this conflicts with
our design decision to make QEMU behaviour be keyed off ID register
fields wherever possible.
Explicitly code the ID registers in the NVIC to return 0 if the Main
Extension is not implemented, so we can make the M0 model set the
ARMCPU struct fields to obtain the correct behaviour without those
values becoming guest-visible.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200910173855.4068-4-peter.maydell@linaro.org
Move the id_pfr0 and id_pfr1 fields into the ARMISARegisters
sub-struct. We're going to want id_pfr1 for an isar_features
check, and moving both at the same time avoids an odd
inconsistency.
Changes other than the ones to cpu.h and kvm64.c made
automatically with:
perl -p -i -e 's/cpu->id_pfr/cpu->isar.id_pfr/' target/arm/*.c hw/intc/armv7m_nvic.c
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200910173855.4068-3-peter.maydell@linaro.org
clang's C11 atomic_fetch_*() functions only take a C11 atomic type
pointer argument. QEMU uses direct types (int, etc) and this causes a
compiler error when a QEMU code calls these functions in a source file
that also included <stdatomic.h> via a system header file:
$ CC=clang CXX=clang++ ./configure ... && make
../util/async.c:79:17: error: address argument to atomic operation must be a pointer to _Atomic type ('unsigned int *' invalid)
Avoid using atomic_*() names in QEMU's atomic.h since that namespace is
used by <stdatomic.h>. Prefix QEMU's APIs with 'q' so that atomic.h
and <stdatomic.h> can co-exist. I checked /usr/include on my machine and
searched GitHub for existing "qatomic_" users but there seem to be none.
This patch was generated using:
$ git grep -h -o '\<atomic\(64\)\?_[a-z0-9_]\+' include/qemu/atomic.h | \
sort -u >/tmp/changed_identifiers
$ for identifier in $(</tmp/changed_identifiers); do
sed -i "s%\<$identifier\>%q$identifier%g" \
$(git grep -I -l "\<$identifier\>")
done
I manually fixed line-wrap issues and misaligned rST tables.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200923105646.47864-1-stefanha@redhat.com>
Some typedefs and macros are defined after the type check macros.
This makes it difficult to automatically replace their
definitions with OBJECT_DECLARE_TYPE.
Patch generated using:
$ ./scripts/codeconverter/converter.py -i \
--pattern=QOMStructTypedefSplit $(git grep -l '' -- '*.[ch]')
which will split "typdef struct { ... } TypedefName"
declarations.
Followed by:
$ ./scripts/codeconverter/converter.py -i --pattern=MoveSymbols \
$(git grep -l '' -- '*.[ch]')
which will:
- move the typedefs and #defines above the type check macros
- add missing #include "qom/object.h" lines if necessary
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200831210740.126168-9-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
- Fixes a bug in printing trap causes
- Allows 16-bit writes to the SiFive test device. This fixes the
failure to reboot the RISC-V virt machine
- Support for the Microchip PolarFire SoC and Icicle Kit
- A reafactor of RISC-V code out of hw/riscv
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Merge remote-tracking branch 'remotes/alistair/tags/pull-riscv-to-apply-20200910' into staging
This PR includes multiple fixes and features for RISC-V:
- Fixes a bug in printing trap causes
- Allows 16-bit writes to the SiFive test device. This fixes the
failure to reboot the RISC-V virt machine
- Support for the Microchip PolarFire SoC and Icicle Kit
- A reafactor of RISC-V code out of hw/riscv
# gpg: Signature made Thu 10 Sep 2020 19:08:06 BST
# gpg: using RSA key F6C4AC46D4934868D3B8CE8F21E10D29DF977054
# gpg: Good signature from "Alistair Francis <alistair@alistair23.me>" [full]
# Primary key fingerprint: F6C4 AC46 D493 4868 D3B8 CE8F 21E1 0D29 DF97 7054
* remotes/alistair/tags/pull-riscv-to-apply-20200910: (30 commits)
hw/riscv: Sort the Kconfig options in alphabetical order
hw/riscv: Drop CONFIG_SIFIVE
hw/riscv: Always build riscv_hart.c
hw/riscv: Move sifive_test model to hw/misc
hw/riscv: Move sifive_uart model to hw/char
hw/riscv: Move riscv_htif model to hw/char
hw/riscv: Move sifive_plic model to hw/intc
hw/riscv: Move sifive_clint model to hw/intc
hw/riscv: Move sifive_gpio model to hw/gpio
hw/riscv: Move sifive_u_otp model to hw/misc
hw/riscv: Move sifive_u_prci model to hw/misc
hw/riscv: Move sifive_e_prci model to hw/misc
hw/riscv: sifive_u: Connect a DMA controller
hw/riscv: clint: Avoid using hard-coded timebase frequency
hw/riscv: microchip_pfsoc: Hook GPIO controllers
hw/riscv: microchip_pfsoc: Connect 2 Cadence GEMs
hw/arm: xlnx: Set all boards' GEM 'phy-addr' property value to 23
hw/net: cadence_gem: Add a new 'phy-addr' property
hw/riscv: microchip_pfsoc: Connect a DMA controller
hw/dma: Add SiFive platform DMA controller emulation
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
# Conflicts:
# hw/riscv/trace-events
This is an effort to clean up the hw/riscv directory. Ideally it
should only contain the RISC-V SoC / machine codes plus generic
codes. Let's move sifive_plic model to hw/intc directory.
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <1599129623-68957-7-git-send-email-bmeng.cn@gmail.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This is an effort to clean up the hw/riscv directory. Ideally it
should only contain the RISC-V SoC / machine codes plus generic
codes. Let's move sifive_clint model to hw/intc directory.
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <1599129623-68957-6-git-send-email-bmeng.cn@gmail.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This makes the code consistent with the rest of QOM code in QEMU,
and will make automated conversion to type declaration macros
simpler.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20200824215936.2961951-3-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Separate run of the TypeCheckMacro converter using the --force
flag, for the cases where typedefs weren't found in the same
header nor in typedefs.h.
Generated initially using:
$ ./scripts/codeconverter/converter.py --force -i \
--pattern=TypeCheckMacro $(git grep -l '' -- '*.[ch]')
Then each case was manually reviewed, and a comment was added
indicating what's unusual about those type checking
macros/functions. Despite not following the usual pattern, the
changes in this patch were found to be safe.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20200831210740.126168-15-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Some typedefs and macros are defined after the type check macros.
This makes it difficult to automatically replace their
definitions with OBJECT_DECLARE_TYPE.
Patch generated using:
$ ./scripts/codeconverter/converter.py -i \
--pattern=QOMStructTypedefSplit $(git grep -l '' -- '*.[ch]')
which will split "typdef struct { ... } TypedefName"
declarations.
Followed by:
$ ./scripts/codeconverter/converter.py -i --pattern=MoveSymbols \
$(git grep -l '' -- '*.[ch]')
which will:
- move the typedefs and #defines above the type check macros
- add missing #include "qom/object.h" lines if necessary
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20200831210740.126168-9-ehabkost@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20200831210740.126168-10-ehabkost@redhat.com>
Message-Id: <20200831210740.126168-11-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
When QEMU switches to the XIVE interrupt mode, it creates all the
guest interrupts at the level of the KVM device. These interrupts are
backed by real HW interrupts from the IPI interrupt pool of the XIVE
controller.
Currently, this is done from the QEMU main thread, which results in
allocating all interrupts from the chip on which QEMU is running. IPIs
are not distributed across the system and the load is not well
balanced across the interrupt controllers.
Change the vCPU IPI allocation to run from the vCPU context. The
associated XIVE IPI interrupt will be allocated on the chip on which
the vCPU is running and improve distribution of the IPIs in the system.
When the vCPUs are pinned, this will make the IPI local to the chip of
the vCPU. It will reduce rerouting between interrupt controllers and
gives better performance.
Device interrupts are still treated the same. To improve placement, we
would need some information on the chip owning the virtual source or
the HW source in case of a passthrough device but this reuires
changes in PAPR.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20200820134547.2355743-5-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The vCPU IPIs are now allocated in kvmppc_xive_cpu_connect() when the
vCPU connects to the KVM device and not when all the sources are reset
in kvmppc_xive_source_reset()
This requires extra care for hotplug vCPUs and VM restore.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20200820134547.2355743-4-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This is doing an extra loop but should be equivalent.
It also differentiate the reset of the sources from the restore of the
sources configuration. This will help in allocating the vCPU IPIs
independently.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20200820134547.2355743-3-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
We will use to check if a vCPU IPI has been created.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20200820134547.2355743-2-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
On POWER9, the KVM XIVE device uses priority 7 for the escalation
interrupts. On POWER10, the host can use a reduced set of priorities
and KVM will configure the escalation priority to a lower number. In
any case, the guest is allowed to use priorities in a single range :
[ 0 .. (maxprio - 1) ].
Introduce a 'hv-prio' property to represent the escalation priority
number and use it to compute the "ibm,plat-res-int-priorities"
property defining the priority ranges reserved by the hypervisor.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20200819130843.2230799-2-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Clang static code analyzer show warning:
hw/intc/exynos4210_combiner.c:231:9: warning: Value stored to 'val' is never read
val = s->reg_set[offset >> 2];
The default register return value should be return 'val'.
Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20200827110311.164316-10-kuhn.chenqun@huawei.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Remove superfluous breaks, as there is a "return" before them.
Signed-off-by: Liao Pingfang <liao.pingfang@zte.com.cn>
Signed-off-by: Yi Wang <wang.yi59@zte.com.cn>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1594631126-36631-1-git-send-email-wang.yi59@zte.com.cn>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This will make future conversion to use OBJECT_DECLARE* easier.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <20200826184334.4120620-3-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Move typedef closer to the type check macros, to make it easier
to convert the code to OBJECT_DEFINE_TYPE() in the future.
Acked-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Tested-By: Roman Bolshakov <r.bolshakov@yadro.com>
Message-Id: <20200825192110.3528606-22-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Here's my first pull request for qemu-5.2, which has quite a few
accumulated things. Highlights are:
* Preliminary support for POWER10 (Power ISA 3.1) instruction emulation
* Add documentation on the (very confusing) pseries NUMA configuration
* Fix some bugs handling edge cases with XICS, XIVE and kernel_irqchip
* Fix icount for a number of POWER registers
* Many cleanups to error handling in XIVE code
* Validate size of -prom-env data
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Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-5.2-20200818' into staging
ppc patch queue 2020-08-18
Here's my first pull request for qemu-5.2, which has quite a few
accumulated things. Highlights are:
* Preliminary support for POWER10 (Power ISA 3.1) instruction emulation
* Add documentation on the (very confusing) pseries NUMA configuration
* Fix some bugs handling edge cases with XICS, XIVE and kernel_irqchip
* Fix icount for a number of POWER registers
* Many cleanups to error handling in XIVE code
* Validate size of -prom-env data
# gpg: Signature made Tue 18 Aug 2020 05:18:36 BST
# gpg: using RSA key 75F46586AE61A66CC44E87DC6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>" [full]
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>" [full]
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>" [full]
# gpg: aka "David Gibson (kernel.org) <dwg@kernel.org>" [unknown]
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392
* remotes/dgibson/tags/ppc-for-5.2-20200818: (40 commits)
spapr/xive: Use xive_source_esb_len()
nvram: Exit QEMU if NVRAM cannot contain all -prom-env data
spapr/xive: Simplify error handling of kvmppc_xive_cpu_synchronize_state()
ppc/xive: Simplify error handling in xive_tctx_realize()
spapr/xive: Simplify error handling in kvmppc_xive_connect()
ppc/xive: Fix error handling in vmstate_xive_tctx_*() callbacks
spapr/xive: Fix error handling in kvmppc_xive_post_load()
spapr/kvm: Fix error handling in kvmppc_xive_pre_save()
spapr/xive: Rework error handling of kvmppc_xive_set_source_config()
spapr/xive: Rework error handling in kvmppc_xive_get_queues()
spapr/xive: Rework error handling of kvmppc_xive_[gs]et_queue_config()
spapr/xive: Rework error handling of kvmppc_xive_cpu_[gs]et_state()
spapr/xive: Rework error handling of kvmppc_xive_mmap()
spapr/xive: Rework error handling of kvmppc_xive_source_reset()
spapr/xive: Rework error handling of kvmppc_xive_cpu_connect()
spapr: Simplify error handling in spapr_phb_realize()
spapr/xive: Convert KVM device fd checks to assert()
ppc/xive: Introduce dedicated kvm_irqchip_in_kernel() wrappers
ppc/xive: Rework setup of XiveSource::esb_mmio
target/ppc: Integrate icount to purr, vtb, and tbu40
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This patch follows what commit aa4d30f661 "riscv: plic: Honour source
priorities" does and ensures that the highest priority interrupt will be
serviced first.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Cc: Jessica Clarke <jrtc27@jrtc27.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <a697ca8a31eff8eb18a88e09a28206063cf85d48.1595655188.git.alistair.francis@wdc.com>
Once an interrupt has been claimed, but before it has been compelted we
shouldn't receive any more pending interrupts. This patche keeps track
of this to ensure that we don't see any more interrupts until it is
completed.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <394c3f070615ff2b4fab61a1cf9cb48c122913b7.1595655188.git.alistair.francis@wdc.com>
After a claim or a priority change we need to update the pending
interrupts. This is based on the same patch for the SiFive PLIC:
5576582280 "riscv: plic: Add a couple of mising
sifive_plic_update calls"
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Cc: Jessica Clarke <jrtc27@jrtc27.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <0693aa700a4c67c49b3f1c973a82b257fdb7198d.1595655188.git.alistair.francis@wdc.com>
Meson doesn't enjoy the same flexibility we have with Make in choosing
the include path. In particular the tracing headers are using
$(build_root)/$(<D).
In order to keep the include directives unchanged,
the simplest solution is to generate headers with patterns like
"trace/trace-audio.h" and place forwarding headers in the source tree
such that for example "audio/trace.h" includes "trace/trace-audio.h".
This patch is too ugly to be applied to the Makefiles now. It's only
a way to separate the changes to the tracing header files from the
Meson rewrite of the tracing logic.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Now that kvmppc_xive_cpu_get_state() returns negative on error, use that
and get rid of the temporary Error object and error_propagate().
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <159707852916.1489912.8376334685349668124.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Now that kvmppc_xive_cpu_connect() returns a negative errno on failure,
use that and get rid of the local_err boilerplate.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <159707852234.1489912.16410314514265848075.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Now that all these functions return a negative errno on failure, check
that and get rid of the local_err boilerplate.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <159707851537.1489912.1030839306195472651.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Now that kvmppc_xive_cpu_get_state() and kvmppc_xive_cpu_set_state()
return negative errnos on failures, use that instead local_err because
it is the recommended practice. Also return that instead of -1 since
vmstate expects negative errnos.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <159707850840.1489912.14912810818646455474.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Now that all these functions return a negative errno on failure, check
that because it is preferred to local_err. And most of all, propagate it
because vmstate expects negative errnos.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <159707850148.1489912.18355118622296682631.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Now that kvmppc_xive_get_queues() returns a negative errno on failure, check
with that because it is preferred to local_err. And most of all, propagate
it because vmstate expects negative errnos.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <159707849455.1489912.6034461176847728064.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Since kvm_device_access() returns a negative errno on failure, convert
kvmppc_xive_set_source_config() to use it for error checking. This allows
to get rid of the local_err boilerplate.
Propagate the return value so that callers may use it as well to check
failures.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <159707848764.1489912.17078842252160674523.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Since kvmppc_xive_get_queue_config() has a return value, convert
kvmppc_xive_get_queues() to use it for error checking. This allows
to get rid of the local_err boiler plate.
Propagate the return value so that callers may use it as well to check
failures.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <159707848069.1489912.14879208798696134531.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Since kvm_device_access() returns a negative errno on failure, convert
kvmppc_xive_get_queue_config() and kvmppc_xive_set_queue_config() to
use it for error checking. This allows to get rid of the local_err
boilerplate.
Propagate the return value so that callers may use it as well to check
failures.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <159707847357.1489912.2032291280645236480.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
kvm_set_one_reg() returns a negative errno on failure, use that instead
of errno. Also propagate it to callers so they can use it to check
for failures and hopefully get rid of their local_err boilerplate.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <159707846665.1489912.14267225652103441921.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Callers currently check failures of kvmppc_xive_mmap() through the
@errp argument, which isn't a recommanded practice. It is preferred
to use a return value when possible.
Since NULL isn't an invalid address in theory, it seems better to
return MAP_FAILED and to teach callers to handle it.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <159707845972.1489912.719896767746375765.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Since kvmppc_xive_source_reset_one() has a return value, convert
kvmppc_xive_source_reset() to use it for error checking. This
allows to get rid of the local_err boiler plate.
Propagate the return value so that callers may use it as well to check
failures.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <159707845245.1489912.9151822670764690034.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Use error_setg_errno() instead of error_setg(strerror()). While here,
use -ret instead of errno since kvm_vcpu_enable_cap() returns a negative
errno on failure.
Use ERRP_GUARD() to ensure that errp can be passed to error_append_hint(),
and get rid of the local_err boilerplate.
Propagate the return value so that callers may use it as well to check
failures.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <159707844549.1489912.4862921680328017645.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
All callers guard these functions with an xive_in_kernel() helper. Make
it clear that they are only to be called when the KVM XIVE device exists.
Note that the check on xive is dropped in kvmppc_xive_disconnect(). It
really cannot be NULL since it comes from set_active_intc() which only
passes pointers to allocated objects.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <159679994169.876294.11026653581505077112.stgit@bahia.lan>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Calls to the KVM XIVE device are guarded by kvm_irqchip_in_kernel(). This
ensures that QEMU won't try to use the device if KVM is disabled or if
an in-kernel irqchip isn't required.
When using ic-mode=dual with the pseries machine, we have two possible
interrupt controllers: XIVE and XICS. The kvm_irqchip_in_kernel() helper
will return true as soon as any of the KVM device is created. It might
lure QEMU to think that the other one is also around, while it is not.
This is exactly what happens with ic-mode=dual at machine init when
claiming IRQ numbers, which must be done on all possible IRQ backends,
eg. RTAS event sources or the PHB0 LSI table : only the KVM XICS device
is active but we end up calling kvmppc_xive_source_reset_one() anyway,
which fails. This doesn't cause any trouble because of another bug :
kvmppc_xive_source_reset_one() lacks an error_setg() and callers don't
see the failure.
Most of the other kvmppc_xive_* functions have similar xive->fd
checks to filter out the case when KVM XIVE isn't active. It
might look safer to have idempotent functions but it doesn't
really help to understand what's going on when debugging.
Since we already have all the kvm_irqchip_in_kernel() in place,
also have the callers to check xive->fd as well before calling
KVM XIVE specific code. This is straight-forward for the spapr
specific XIVE code. Some more care is needed for the platform
agnostic XIVE code since it cannot access xive->fd directly.
Introduce new in_kernel() methods in some base XIVE classes
for this purpose and implement them only in spapr.
In all cases, we still need to call kvm_irqchip_in_kernel() so that
compilers can optimize the kvmppc_xive_* calls away when CONFIG_KVM
isn't defined, thus avoiding the need for stubs.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <159679993438.876294.7285654331498605426.stgit@bahia.lan>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Depending on whether XIVE is emultated or backed with a KVM XIVE device,
the ESB MMIOs of a XIVE source point to an I/O memory region or a mapped
memory region.
This is currently handled by checking kvm_irqchip_in_kernel() returns
false in xive_source_realize(). This is a bit awkward as we usually
need to do extra things when we're using the in-kernel backend, not
less. But most important, we can do better: turn the existing "xive.esb"
memory region into a plain container, introduce an "xive.esb-emulated"
I/O subregion and rename the existing "xive.esb" subregion in the KVM
code to "xive.esb-kvm". Since "xive.esb-kvm" is added with overlap
and a higher priority, it prevails over "xive.esb-emulated" (ie.
a guest using KVM XIVE will interact with "xive.esb-kvm" instead of
the default "xive.esb-emulated" region.
While here, consolidate the computation of the MMIO region size in
a common helper.
Suggested-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <159679992680.876294.7520540158586170894.stgit@bahia.lan>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Since this function begins with:
/* The KVM XIVE device is not in use */
if (!xive || xive->fd == -1) {
return;
}
we obviously don't need to check xive->fd again.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <159673297296.766512.14780055521619233656.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
If the creation of the KVM XIVE device fails for some reasons, the
negative errno ends up in xive->fd, but the rest of the code assumes
that xive->fd either contains an open fd, ie. positive value, or -1.
This doesn't cause any misbehavior except kvmppc_xive_disconnect()
that will try to close(xive->fd) during rollback and likely be
rewarded with an EBADF.
Only set xive->fd with a open fd.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <159673296585.766512.15404407281299745442.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Fix some typos in comments about code modeling coalescing points in the
XIVE routing engine (IVRE).
Signed-off-by: Gustavo Romero <gromero@linux.ibm.com>
Message-Id: <1595461434-27725-1-git-send-email-gromero@linux.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The NVIC provides an outbound qemu_irq "SYSRESETREQ" which it signals
when the guest sets the SYSRESETREQ bit in the AIRCR register. This
matches the hardware design (where the CPU has a signal of this name
and it is up to the SoC to connect that up to an actual reset
mechanism), but in QEMU it mostly results in duplicated code in SoC
objects and bugs where SoC model implementors forget to wire up the
SYSRESETREQ line.
Provide a default behaviour for the case where SYSRESETREQ is not
actually connected to anything: use qemu_system_reset_request() to
perform a system reset. This will allow us to remove the
implementations of SYSRESETREQ handling from the boards where that's
exactly what it does, and also fixes the bugs in the board models
which forgot to wire up the signal:
* microbit
* mps2-an385
* mps2-an505
* mps2-an511
* mps2-an521
* musca-a
* musca-b1
* netduino
* netduinoplus2
We still allow the board to wire up the signal if it needs to, in case
we need to model more complicated reset controller logic or to model
buggy SoC hardware which forgot to wire up the line itself. But
defaulting to "reset the system" is more often going to be correct
than defaulting to "do nothing".
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20200728103744.6909-3-peter.maydell@linaro.org
This is helpful when debugging stuck guest timers.
As we need apic_get_current_count for that, and it is really not
emulation specific, move it to apic_common.c and export it. Fix its
style at this chance as well.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <e00e2896-ca5b-a929-de7a-8e5762f0c1c2@siemens.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
When migrate_add_blocker(blocker, &errp) is followed by
error_propagate(errp, err), we can often just as well do
migrate_add_blocker(..., errp).
Do that with this Coccinelle script:
@@
expression blocker, err, errp;
expression ret;
@@
- ret = migrate_add_blocker(blocker, &err);
- if (err) {
+ ret = migrate_add_blocker(blocker, errp);
+ if (ret < 0) {
... when != err;
- error_propagate(errp, err);
...
}
@@
expression blocker, err, errp;
@@
- migrate_add_blocker(blocker, &err);
- if (err) {
+ if (migrate_add_blocker(blocker, errp) < 0) {
... when != err;
- error_propagate(errp, err);
...
}
Double-check @err is not used afterwards. Dereferencing it would be
use after free, but checking whether it's null would be legitimate.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200707160613.848843-43-armbru@redhat.com>
When all we do with an Error we receive into a local variable is
propagating to somewhere else, we can just as well receive it there
right away. The previous two commits did that for sufficiently simple
cases with Coccinelle. Do it for several more manually.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200707160613.848843-37-armbru@redhat.com>
When all we do with an Error we receive into a local variable is
propagating to somewhere else, we can just as well receive it there
right away. The previous commit did that with a Coccinelle script I
consider fairly trustworthy. This commit uses the same script with
the matching of return taken out, i.e. we convert
if (!foo(..., &err)) {
...
error_propagate(errp, err);
...
}
to
if (!foo(..., errp)) {
...
...
}
This is unsound: @err could still be read between afterwards. I don't
know how to express "no read of @err without an intervening write" in
Coccinelle. Instead, I manually double-checked for uses of @err.
Suboptimal line breaks tweaked manually. qdev_realize() simplified
further to placate scripts/checkpatch.pl.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200707160613.848843-36-armbru@redhat.com>
When all we do with an Error we receive into a local variable is
propagating to somewhere else, we can just as well receive it there
right away. Convert
if (!foo(..., &err)) {
...
error_propagate(errp, err);
...
return ...
}
to
if (!foo(..., errp)) {
...
...
return ...
}
where nothing else needs @err. Coccinelle script:
@rule1 forall@
identifier fun, err, errp, lbl;
expression list args, args2;
binary operator op;
constant c1, c2;
symbol false;
@@
if (
(
- fun(args, &err, args2)
+ fun(args, errp, args2)
|
- !fun(args, &err, args2)
+ !fun(args, errp, args2)
|
- fun(args, &err, args2) op c1
+ fun(args, errp, args2) op c1
)
)
{
... when != err
when != lbl:
when strict
- error_propagate(errp, err);
... when != err
(
return;
|
return c2;
|
return false;
)
}
@rule2 forall@
identifier fun, err, errp, lbl;
expression list args, args2;
expression var;
binary operator op;
constant c1, c2;
symbol false;
@@
- var = fun(args, &err, args2);
+ var = fun(args, errp, args2);
... when != err
if (
(
var
|
!var
|
var op c1
)
)
{
... when != err
when != lbl:
when strict
- error_propagate(errp, err);
... when != err
(
return;
|
return c2;
|
return false;
|
return var;
)
}
@depends on rule1 || rule2@
identifier err;
@@
- Error *err = NULL;
... when != err
Not exactly elegant, I'm afraid.
The "when != lbl:" is necessary to avoid transforming
if (fun(args, &err)) {
goto out
}
...
out:
error_propagate(errp, err);
even though other paths to label out still need the error_propagate().
For an actual example, see sclp_realize().
Without the "when strict", Coccinelle transforms vfio_msix_setup(),
incorrectly. I don't know what exactly "when strict" does, only that
it helps here.
The match of return is narrower than what I want, but I can't figure
out how to express "return where the operand doesn't use @err". For
an example where it's too narrow, see vfio_intx_enable().
Silently fails to convert hw/arm/armsse.c, because Coccinelle gets
confused by ARMSSE being used both as typedef and function-like macro
there. Converted manually.
Line breaks tidied up manually. One nested declaration of @local_err
deleted manually. Preexisting unwanted blank line dropped in
hw/riscv/sifive_e.c.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200707160613.848843-35-armbru@redhat.com>
The object_property_set_FOO() setters take property name and value in
an unusual order:
void object_property_set_FOO(Object *obj, FOO_TYPE value,
const char *name, Error **errp)
Having to pass value before name feels grating. Swap them.
Same for object_property_set(), object_property_get(), and
object_property_parse().
Convert callers with this Coccinelle script:
@@
identifier fun = {
object_property_get, object_property_parse, object_property_set_str,
object_property_set_link, object_property_set_bool,
object_property_set_int, object_property_set_uint, object_property_set,
object_property_set_qobject
};
expression obj, v, name, errp;
@@
- fun(obj, v, name, errp)
+ fun(obj, name, v, errp)
Chokes on hw/arm/musicpal.c's lcd_refresh() with the unhelpful error
message "no position information". Convert that one manually.
Fails to convert hw/arm/armsse.c, because Coccinelle gets confused by
ARMSSE being used both as typedef and function-like macro there.
Convert manually.
Fails to convert hw/rx/rx-gdbsim.c, because Coccinelle gets confused
by RXCPU being used both as typedef and function-like macro there.
Convert manually. The other files using RXCPU that way don't need
conversion.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200707160613.848843-27-armbru@redhat.com>
[Straightforwad conflict with commit 2336172d9b "audio: set default
value for pcspk.iobase property" resolved]
The previous commit enables conversion of
visit_foo(..., &err);
if (err) {
...
}
to
if (!visit_foo(..., errp)) {
...
}
for visitor functions that now return true / false on success / error.
Coccinelle script:
@@
identifier fun =~ "check_list|input_type_enum|lv_start_struct|lv_type_bool|lv_type_int64|lv_type_str|lv_type_uint64|output_type_enum|parse_type_bool|parse_type_int64|parse_type_null|parse_type_number|parse_type_size|parse_type_str|parse_type_uint64|print_type_bool|print_type_int64|print_type_null|print_type_number|print_type_size|print_type_str|print_type_uint64|qapi_clone_start_alternate|qapi_clone_start_list|qapi_clone_start_struct|qapi_clone_type_bool|qapi_clone_type_int64|qapi_clone_type_null|qapi_clone_type_number|qapi_clone_type_str|qapi_clone_type_uint64|qapi_dealloc_start_list|qapi_dealloc_start_struct|qapi_dealloc_type_anything|qapi_dealloc_type_bool|qapi_dealloc_type_int64|qapi_dealloc_type_null|qapi_dealloc_type_number|qapi_dealloc_type_str|qapi_dealloc_type_uint64|qobject_input_check_list|qobject_input_check_struct|qobject_input_start_alternate|qobject_input_start_list|qobject_input_start_struct|qobject_input_type_any|qobject_input_type_bool|qobject_input_type_bool_keyval|qobject_input_type_int64|qobject_input_type_int64_keyval|qobject_input_type_null|qobject_input_type_number|qobject_input_type_number_keyval|qobject_input_type_size_keyval|qobject_input_type_str|qobject_input_type_str_keyval|qobject_input_type_uint64|qobject_input_type_uint64_keyval|qobject_output_start_list|qobject_output_start_struct|qobject_output_type_any|qobject_output_type_bool|qobject_output_type_int64|qobject_output_type_null|qobject_output_type_number|qobject_output_type_str|qobject_output_type_uint64|start_list|visit_check_list|visit_check_struct|visit_start_alternate|visit_start_list|visit_start_struct|visit_type_.*";
expression list args;
typedef Error;
Error *err;
@@
- fun(args, &err);
- if (err)
+ if (!fun(args, &err))
{
...
}
A few line breaks tidied up manually.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200707160613.848843-19-armbru@redhat.com>
Convert
foo(..., &err);
if (err) {
...
}
to
if (!foo(..., &err)) {
...
}
for qdev_realize(), qdev_realize_and_unref(), qbus_realize() and their
wrappers isa_realize_and_unref(), pci_realize_and_unref(),
sysbus_realize(), sysbus_realize_and_unref(), usb_realize_and_unref().
Coccinelle script:
@@
identifier fun = {
isa_realize_and_unref, pci_realize_and_unref, qbus_realize,
qdev_realize, qdev_realize_and_unref, sysbus_realize,
sysbus_realize_and_unref, usb_realize_and_unref
};
expression list args, args2;
typedef Error;
Error *err;
@@
- fun(args, &err, args2);
- if (err)
+ if (!fun(args, &err, args2))
{
...
}
Chokes on hw/arm/musicpal.c's lcd_refresh() with the unhelpful error
message "no position information". Nothing to convert there; skipped.
Fails to convert hw/arm/armsse.c, because Coccinelle gets confused by
ARMSSE being used both as typedef and function-like macro there.
Converted manually.
A few line breaks tidied up manually.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Message-Id: <20200707160613.848843-5-armbru@redhat.com>
Loongson-3 has an integrated liointc (Local I/O Interrupt Controller).
It is similar to Goldfish interrupt controller, but more powerful (e.g.,
it can route external interrupt to multi-cores).
Documents about Loongson-3's liointc:
1, https://wiki.godson.ac.cn/ip_block:liointc;
2, The "I/O中断" section of Loongson-3's user mannual, part 1.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
Reviewed-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
Message-Id: <1592995531-32600-3-git-send-email-chenhc@lemote.com>
This implementation supported only ICUa.
Hardware manual.
https://www.renesas.com/us/en/doc/products/mpumcu/doc/rx_family/r01uh0033ej0140_rx62n.pdf
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200224141923.82118-15-ysato@users.sourceforge.jp>
[PMD: Fill VMStateField for migration, cover files in MAINTAINERS]
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
The Ibex core contains a PLIC that although similar to the RISC-V spec
is not RISC-V spec compliant.
This patch implements a Ibex PLIC in a somewhat generic way.
As the current RISC-V PLIC needs tidying up, my hope is that as the Ibex
PLIC move towards spec compliance this PLIC implementation can be
updated until it can replace the current PLIC.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
All remaining conversions to qdev_realize() are for bus-less devices.
Coccinelle script:
// only correct for bus-less @dev!
@@
expression errp;
expression dev;
@@
- qdev_init_nofail(dev);
+ qdev_realize(dev, NULL, &error_fatal);
@ depends on !(file in "hw/core/qdev.c") && !(file in "hw/core/bus.c")@
expression errp;
expression dev;
symbol true;
@@
- object_property_set_bool(OBJECT(dev), true, "realized", errp);
+ qdev_realize(DEVICE(dev), NULL, errp);
@ depends on !(file in "hw/core/qdev.c") && !(file in "hw/core/bus.c")@
expression errp;
expression dev;
symbol true;
@@
- object_property_set_bool(dev, true, "realized", errp);
+ qdev_realize(DEVICE(dev), NULL, errp);
Note that Coccinelle chokes on ARMSSE typedef vs. macro in
hw/arm/armsse.c. Worked around by temporarily renaming the macro for
the spatch run.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200610053247.1583243-57-armbru@redhat.com>
These are init/realize pairs produced by the previous commit's
Coccinelle script where the argument test doesn't quite match. They
need even more careful review.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200610053247.1583243-50-armbru@redhat.com>
This is the same transformation as in the previous commit, except
sysbus_init_child_obj() and realize are too separated for the commit's
Coccinelle script to handle, typically because sysbus_init_child_obj()
is in a device's instance_init() method, and the matching realize is
in its realize() method.
Perhaps a Coccinelle wizard could make it transform that pattern, but
I'm just a bungler, and the best I can do is transforming the two
separate parts separately:
@@
expression errp;
expression child;
symbol true;
@@
- object_property_set_bool(OBJECT(child), true, "realized", errp);
+ sysbus_realize(SYS_BUS_DEVICE(child), errp);
// only correct with a matching sysbus_init_child_obj() transformation!
@@
expression errp;
expression child;
symbol true;
@@
- object_property_set_bool(child, true, "realized", errp);
+ sysbus_realize(SYS_BUS_DEVICE(child), errp);
// only correct with a matching sysbus_init_child_obj() transformation!
@@
expression child;
@@
- qdev_init_nofail(DEVICE(child));
+ sysbus_realize(SYS_BUS_DEVICE(child), &error_fatal);
// only correct with a matching sysbus_init_child_obj() transformation!
@@
expression child;
expression dev;
@@
dev = DEVICE(child);
...
- qdev_init_nofail(dev);
+ sysbus_realize(SYS_BUS_DEVICE(dev), &error_fatal);
// only correct with a matching sysbus_init_child_obj() transformation!
@@
expression child;
identifier dev;
@@
DeviceState *dev = DEVICE(child);
...
- qdev_init_nofail(dev);
+ sysbus_realize(SYS_BUS_DEVICE(dev), &error_fatal);
// only correct with a matching sysbus_init_child_obj() transformation!
@@
expression parent, name, size, type;
expression child;
symbol true;
@@
- sysbus_init_child_obj(parent, name, child, size, type);
+ sysbus_init_child_XXX(parent, name, child, size, type);
@@
expression parent, propname, type;
expression child;
@@
- sysbus_init_child_XXX(parent, propname, child, sizeof(*child), type)
+ object_initialize_child(parent, propname, child, type)
@@
expression parent, propname, type;
expression child;
@@
- sysbus_init_child_XXX(parent, propname, &child, sizeof(child), type)
+ object_initialize_child(parent, propname, &child, type)
This script is *unsound*: we need to manually verify init and realize
conversions are properly paired.
This commit has only the pairs where object_initialize_child()'s
@child and sysbus_realize()'s @dev argument text match exactly within
the same source file.
Note that Coccinelle chokes on ARMSSE typedef vs. macro in
hw/arm/armsse.c. Worked around by temporarily renaming the macro for
the spatch run.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200610053247.1583243-49-armbru@redhat.com>
This is the transformation explained in the commit before previous.
Takes care of just one pattern that needs conversion. More to come in
this series.
Coccinelle script:
@ depends on !(file in "hw/arm/highbank.c")@
expression bus, type_name, dev, expr;
@@
- dev = qdev_create(bus, type_name);
+ dev = qdev_new(type_name);
... when != dev = expr
- qdev_init_nofail(dev);
+ qdev_realize_and_unref(dev, bus, &error_fatal);
@@
expression bus, type_name, dev, expr;
identifier DOWN;
@@
- dev = DOWN(qdev_create(bus, type_name));
+ dev = DOWN(qdev_new(type_name));
... when != dev = expr
- qdev_init_nofail(DEVICE(dev));
+ qdev_realize_and_unref(DEVICE(dev), bus, &error_fatal);
@@
expression bus, type_name, expr;
identifier dev;
@@
- DeviceState *dev = qdev_create(bus, type_name);
+ DeviceState *dev = qdev_new(type_name);
... when != dev = expr
- qdev_init_nofail(dev);
+ qdev_realize_and_unref(dev, bus, &error_fatal);
@@
expression bus, type_name, dev, expr, errp;
symbol true;
@@
- dev = qdev_create(bus, type_name);
+ dev = qdev_new(type_name);
... when != dev = expr
- object_property_set_bool(OBJECT(dev), true, "realized", errp);
+ qdev_realize_and_unref(dev, bus, errp);
@@
expression bus, type_name, expr, errp;
identifier dev;
symbol true;
@@
- DeviceState *dev = qdev_create(bus, type_name);
+ DeviceState *dev = qdev_new(type_name);
... when != dev = expr
- object_property_set_bool(OBJECT(dev), true, "realized", errp);
+ qdev_realize_and_unref(dev, bus, errp);
The first rule exempts hw/arm/highbank.c, because it matches along two
control flow paths there, with different @type_name. Covered by the
next commit's manual conversions.
Missing #include "qapi/error.h" added manually.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200610053247.1583243-10-armbru@redhat.com>
[Conflicts in hw/misc/empty_slot.c and hw/sparc/leon3.c resolved]
This is majorly only for X86 because that's the only one that supports
split irqchip for now.
When the irqchip is split, we face a dilemma that KVM irqfd will be
enabled, however the slow irqchip is still running in the userspace.
It means that the resamplefd in the kernel irqfds won't take any
effect and it will miss to ack INTx interrupts on EOIs.
One example is split irqchip with VFIO INTx, which will break if we
use the VFIO INTx fast path.
This patch can potentially supports the VFIO fast path again for INTx,
that the IRQ delivery will still use the fast path, while we don't
need to trap MMIOs in QEMU for the device to emulate the EIOs (see the
callers of vfio_eoi() hook). However the EOI of the INTx will still
need to be done from the userspace by caching all the resamplefds in
QEMU and kick properly for IOAPIC EOI broadcast.
This is tricky because in this case the userspace ioapic irr &
remote-irr will be bypassed. However such a change will greatly boost
performance for assigned devices using INTx irqs (TCP_RR boosts 46%
after this patch applied).
When the userspace is responsible for the resamplefd kickup, don't
register it on the kvm_irqfd anymore, because on newer kernels (after
commit 654f1f13ea56, 5.2+) the KVM_IRQFD will fail if with both split
irqchip and resamplefd. This will make sure that the fast path will
work for all supported kernels.
https://patchwork.kernel.org/patch/10738541/#22609933
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20200318145204.74483-5-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Devices may have component devices and buses.
Device realization may fail. Realization is recursive: a device's
realize() method realizes its components, and device_set_realized()
realizes its buses (which should in turn realize the devices on that
bus, except bus_set_realized() doesn't implement that, yet).
When realization of a component or bus fails, we need to roll back:
unrealize everything we realized so far. If any of these unrealizes
failed, the device would be left in an inconsistent state. Must not
happen.
device_set_realized() lets it happen: it ignores errors in the roll
back code starting at label child_realize_fail.
Since realization is recursive, unrealization must be recursive, too.
But how could a partly failed unrealize be rolled back? We'd have to
re-realize, which can fail. This design is fundamentally broken.
device_set_realized() does not roll back at all. Instead, it keeps
unrealizing, ignoring further errors.
It can screw up even for a device with no buses: if the lone
dc->unrealize() fails, it still unregisters vmstate, and calls
listeners' unrealize() callback.
bus_set_realized() does not roll back either. Instead, it stops
unrealizing.
Fortunately, no unrealize method can fail, as we'll see below.
To fix the design error, drop parameter @errp from all the unrealize
methods.
Any unrealize method that uses @errp now needs an update. This leads
us to unrealize() methods that can fail. Merely passing it to another
unrealize method cannot cause failure, though. Here are the ones that
do other things with @errp:
* virtio_serial_device_unrealize()
Fails when qbus_set_hotplug_handler() fails, but still does all the
other work. On failure, the device would stay realized with its
resources completely gone. Oops. Can't happen, because
qbus_set_hotplug_handler() can't actually fail here. Pass
&error_abort to qbus_set_hotplug_handler() instead.
* hw/ppc/spapr_drc.c's unrealize()
Fails when object_property_del() fails, but all the other work is
already done. On failure, the device would stay realized with its
vmstate registration gone. Oops. Can't happen, because
object_property_del() can't actually fail here. Pass &error_abort
to object_property_del() instead.
* spapr_phb_unrealize()
Fails and bails out when remove_drcs() fails, but other work is
already done. On failure, the device would stay realized with some
of its resources gone. Oops. remove_drcs() fails only when
chassis_from_bus()'s object_property_get_uint() fails, and it can't
here. Pass &error_abort to remove_drcs() instead.
Therefore, no unrealize method can fail before this patch.
device_set_realized()'s recursive unrealization via bus uses
object_property_set_bool(). Can't drop @errp there, so pass
&error_abort.
We similarly unrealize with object_property_set_bool() elsewhere,
always ignoring errors. Pass &error_abort instead.
Several unrealize methods no longer handle errors from other unrealize
methods: virtio_9p_device_unrealize(),
virtio_input_device_unrealize(), scsi_qdev_unrealize(), ...
Much of the deleted error handling looks wrong anyway.
One unrealize methods no longer ignore such errors:
usb_ehci_pci_exit().
Several realize methods no longer ignore errors when rolling back:
v9fs_device_realize_common(), pci_qdev_unrealize(),
spapr_phb_realize(), usb_qdev_realize(), vfio_ccw_realize(),
virtio_device_realize().
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200505152926.18877-17-armbru@redhat.com>
The only way object_property_add() can fail is when a property with
the same name already exists. Since our property names are all
hardcoded, failure is a programming error, and the appropriate way to
handle it is passing &error_abort.
Same for its variants, except for object_property_add_child(), which
additionally fails when the child already has a parent. Parentage is
also under program control, so this is a programming error, too.
We have a bit over 500 callers. Almost half of them pass
&error_abort, slightly fewer ignore errors, one test case handles
errors, and the remaining few callers pass them to their own callers.
The previous few commits demonstrated once again that ignoring
programming errors is a bad idea.
Of the few ones that pass on errors, several violate the Error API.
The Error ** argument must be NULL, &error_abort, &error_fatal, or a
pointer to a variable containing NULL. Passing an argument of the
latter kind twice without clearing it in between is wrong: if the
first call sets an error, it no longer points to NULL for the second
call. ich9_pm_add_properties(), sparc32_ledma_realize(),
sparc32_dma_realize(), xilinx_axidma_realize(), xilinx_enet_realize()
are wrong that way.
When the one appropriate choice of argument is &error_abort, letting
users pick the argument is a bad idea.
Drop parameter @errp and assert the preconditions instead.
There's one exception to "duplicate property name is a programming
error": the way object_property_add() implements the magic (and
undocumented) "automatic arrayification". Don't drop @errp there.
Instead, rename object_property_add() to object_property_try_add(),
and add the obvious wrapper object_property_add().
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200505152926.18877-15-armbru@redhat.com>
[Two semantic rebase conflicts resolved]
The KVM_VGIC_ATTR macro expect the second parameter as gicr_typer,
of which high 32bit is constructed by mp_affinity. For most case,
the high 32bit of mp_affinity is zero, so it will always access the
ICC_CTLR_EL1 of CPU0.
Signed-off-by: Keqian Zhu <zhukeqian1@huawei.com>
Message-id: 20200413091552.62748-2-zhukeqian1@huawei.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The license is the 'GNU General Public License v2.0 or later',
not 'and':
This program is free software; you can redistribute it and/ori
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
Fix the license comment.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200312213455.15854-1-philmd@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The "ibm,xive-lisn-ranges" defines ranges of interrupt numbers that
the guest can use to configure IPIs. It starts at 0 today but it could
change to some other offset. Make clear which IRQ range we are
exposing by using SPAPR_IRQ_IPI in the property definition.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20200306123307.1348-1-clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Some of an M-profile CPU's cached hflags state depends on state that's
in our NVIC object. We already do an hflags rebuild when the NVIC
registers are written, but we also need to do this on NVIC reset,
because there's no guarantee that this will happen before the
CPU reset.
This fixes an assertion due to mismatched hflags which happens if
the CPU is reset from inside a HardFault handler.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200303174950.3298-2-peter.maydell@linaro.org
In our KVM GICv2 realize function, we try to cope with old kernels
that don't provide the device control API (KVM_CAP_DEVICE_CTRL): we
try to use the device control, and if that fails we fall back to
assuming that the kernel has the old style KVM_CREATE_IRQCHIP and
that it will provide a GICv2.
This doesn't cater for the possibility of a kernel and hardware which
only provide a GICv3, which is very common now. On that setup we
will abort() later on in kvm_arm_pmu_set_irq() when we try to wire up
an interrupt to the GIC we failed to create:
qemu-system-aarch64: PMU: KVM_SET_DEVICE_ATTR: Invalid argument
qemu-system-aarch64: failed to set irq for PMU
Aborted
If the kernel advertises KVM_CAP_DEVICE_CTRL we should trust it if it
says it can't create a GICv2, rather than assuming it has one. We
can then produce a more helpful error message including a hint about
the most probable reason for the failure.
If the kernel doesn't advertise KVM_CAP_DEVICE_CTRL then it is truly
ancient by this point but we might as well still fall back to a
KVM_CREATE_IRQCHIP GICv2.
With this patch then the user misconfiguration which previously
caused an abort now prints:
qemu-system-aarch64: Initialization of device kvm-arm-gic failed: error creating in-kernel VGIC: No such device
Perhaps the host CPU does not support GICv2?
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Tested-by: Andrew Jones <drjones@redhat.com>
Message-id: 20200225182435.1131-1-peter.maydell@linaro.org
Use this in the places that were checking ARM_FEATURE_VFP, and
are obviously testing for the existance of the register set
as opposed to testing for some particular instruction extension.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200224222232.13807-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The GICv2 allows the implementation to implement a variable number
of priority bits; unimplemented bits in the priority registers
are read as zeros, writes ignored. We were previously always
implementing a full 8 bits of priority, which is allowed but not
what the real hardware typically does (which is usually to have
4 or 5 bits of priority).
Add a new device property to allow the number of implemented
property bits to be specified.
Signed-off-by: Sai Pavan Boddu <sai.pavan.boddu@xilinx.com>
Message-id: 1582537164-764-2-git-send-email-sai.pavan.boddu@xilinx.com
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: improved commit message]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The isar_feature_aa32_pan and isar_feature_aa32_ats1e1 functions
are supposed to be testing fields in ID_MMFR3; but a cut-and-paste
error meant we were looking at MVFR0 instead.
Fix the functions to look at the right register; this requires
us to move at least id_mmfr3 to the ARMISARegisters struct; we
choose to move all the ID_MMFRn registers for consistency.
Fixes: 3d6ad6bb46
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200214175116.9164-19-peter.maydell@linaro.org
Instead of open-coding a check on the ID_DFR0 PerfMon ID register
field, create a standardly-named isar_feature for "does AArch32 have
a v8.1 PMUv3" and use it.
This entails moving the id_dfr0 field into the ARMISARegisters struct.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200214175116.9164-9-peter.maydell@linaro.org
This is a model of the PCIe Host Bridge (PHB3) found on a POWER8
processor. It includes the PowerBus logic interface (PBCQ), IOMMU
support, a single PCIe Gen.3 Root Complex, and support for MSI and LSI
interrupt sources as found on a POWER8 system using the XICS interrupt
controller.
The POWER8 processor comes in different flavors: Venice, Murano,
Naple, each having a different number of PHBs. To make things simpler,
the models provides 3 PHB3 per chip. Some platforms, like the
Firestone, can also couple PHBs on the first chip to provide more
bandwidth but this is too specific to model in QEMU.
XICS requires some adjustment to support the PHB3 MSI. The changes are
provided here but they could be decoupled in prereq patches.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20200127144506.11132-3-clg@kaod.org>
[dwg: Use device_class_set_props()]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
If LPIs are disabled, KVM will just ignore the GICR_PENDBASER.PTZ bit when
restoring GICR_CTLR. Setting PTZ here makes littlt sense in "reduce GIC
initialization time".
And what's worse, PTZ is generally programmed by guest to indicate to the
Redistributor whether the LPI Pending table is zero when enabling LPIs.
If migration is triggered when the PTZ has just been cleared by guest (and
before enabling LPIs), we will see PTZ==1 on the destination side, which
is not as expected. Let's just drop this hackish userspace behavior.
Also take this chance to refine the comment a bit.
Fixes: 367b9f527b ("hw/intc/arm_gicv3_kvm: Implement get/put functions")
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Message-id: 20200119133051.642-1-yuzenghui@huawei.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Provide a temporary device_legacy_reset function doing what
device_reset does to prepare for the transition with Resettable
API.
All occurrence of device_reset in the code tree are also replaced
by device_legacy_reset.
The new resettable API has different prototype and semantics
(resetting child buses as well as the specified device). Subsequent
commits will make the changeover for each call site individually; once
that is complete device_legacy_reset() will be removed.
Signed-off-by: Damien Hedde <damien.hedde@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200123132823.1117486-2-damien.hedde@greensocs.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
If the kernel irqchip has been disabled, we don't want the
{add,release}_adapter_routes routines to call any kvm_irqchip_*
interfaces, as they may rely on an irqchip actually having been
created. Just take a quick exit in that case instead. If you are
trying to use irqfd without a kernel irqchip, we will fail with
an error.
Also initialize routes->gsi[] with -1 in the virtio-ccw handling,
to make sure we don't trip over other errors, either. (Nobody
else uses the gsi array in that structure.)
Fixes: d426d9fba8 ("s390x/virtio-ccw: wire up irq routing and irqfds")
Reviewed-by: Thomas Huth <thuth@redhat.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-Id: <20200117111147.5006-1-cohuck@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
'out' label can be replaced by 'return' with the appropriate
value that is set by 'r' right before the jump.
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20200106182425.20312-42-danielhb413@gmail.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Migration is silently broken now with x2apic config like this:
-smp 200,maxcpus=288,sockets=2,cores=72,threads=2 \
-device intel-iommu,intremap=on,eim=on
After migration, the guest kernel could hang at anything, due to
x2apic bit not migrated correctly in IA32_APIC_BASE on some vcpus, so
any operations related to x2apic could be broken then (e.g., RDMSR on
x2apic MSRs could fail because KVM would think that the vcpu hasn't
enabled x2apic at all).
The issue is that the x2apic bit was never applied correctly for vcpus
whose ID > 255 when migrate completes, and that's because when we
migrate APIC we use the APICCommonState.id as instance ID of the
migration stream, while that's too short for x2apic.
Let's use the newly introduced initial_apic_id for that.
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
It was always used as 32bit, so define it as used to be clear.
Instead of using -1 as the auto-gen magic value, we switch to
UINT32_MAX. We also make sure that we don't auto-gen this value to
avoid overflowed instance IDs without being noticed.
Suggested-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Alistair Francis
Peter Maydell
AlexChen
Yifei Jiang
Bin Meng
Philippe Mathieu-Daudé
Stefan Hajnoczi
Eduardo Habkost
Cédric Le Goater
Chen Qun
Liao Pingfang
Marc-André Lureau
Paolo Bonzini
Greg Kurz
Gustavo Romero
Jan Kiszka
Markus Armbruster
Huacai Chen
Yoshinori Sato
Peter Xu
Keqian Zhu
Philippe Mathieu-Daudé
Richard Henderson
Sai Pavan Boddu
Zenghui Yu
Damien Hedde
Cornelia Huck
Daniel Henrique Barboza