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The M-profile definition of the MVFR1 ID register differs slightly
from the A-profile one, and in particular the check for "does the CPU
support fp16 arithmetic" is not the same.
We don't currently implement any M-profile CPUs with fp16 arithmetic,
so this is not yet a visible bug, but correcting the logic now
disarms this beartrap for when we eventually do.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200910173855.4068-6-peter.maydell@linaro.org
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Give the Cortex-M0 ID register values corresponding to its
implemented behaviour. These will not be guest-visible but will be
used to govern the behaviour of QEMU's emulation. We use the same
values that the Cortex-M3 does.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200910173855.4068-5-peter.maydell@linaro.org
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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
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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
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The ARM_FEATURE_PXN bit indicates whether the CPU supports the PXN
bit in short-descriptor translation table format descriptors. This
is indicated by ID_MMFR0.VMSA being at least 0b0100. Replace the
feature bit with an ID register check, in line with our preference
for ID register checks over feature bits.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200910173855.4068-2-peter.maydell@linaro.org
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'remotes/kraxel/tags/microvm-20200930-pull-request' into staging
microvm: add pcie support.
# gpg: Signature made Wed 30 Sep 2020 18:48:41 BST
# gpg: using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901 FE7D 4CB6 D8EE D3E8 7138
* remotes/kraxel/tags/microvm-20200930-pull-request:
tests/acpi: update expected data files
acpi/gpex: no reason to use a method for _CRS
tests/acpi: add microvm pcie test
tests/acpi: factor out common microvm test setup
tests/acpi: add empty tests/data/acpi/microvm/DSDT.pcie file
tests/acpi: allow updates for expected data files
microvm/pcie: add 64bit mmio window
microvm: add pcie support
microvm: add irq table
arm: use acpi_dsdt_add_gpex
acpi: add acpi_dsdt_add_gpex
move MemMapEntry
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 20200928104256.9241-13-kraxel@redhat.com
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... just to return something which is constant anyway.
- Method (_CRS, 0, NotSerialized) // _CRS: Current Resource Settings
- {
- Return (ResourceTemplate ()
- {
- WordBusNumber (ResourceProducer, MinFixed, MaxFixed, PosDecode,
[ ... ]
+ Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings
+ {
+ WordBusNumber (ResourceProducer, MinFixed, MaxFixed, PosDecode,
[ ... ]
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 20200928104256.9241-12-kraxel@redhat.com
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 20200928104256.9241-11-kraxel@redhat.com
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... into new test_acpi_microvm_prepare helper
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 20200928104256.9241-10-kraxel@redhat.com
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 20200928104256.9241-9-kraxel@redhat.com
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 20200928104256.9241-8-kraxel@redhat.com
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Place the 64bit window at the top of the physical address space, assign
25% of the avaiable address space. Force cpu.host-phys-bits=on for
microvm machine typs so this actually works reliable.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 20200928104256.9241-7-kraxel@redhat.com
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Uses the existing gpex device which is also used as pcie host bridge on
arm/aarch64. For now only a 32bit mmio window and no ioport support.
It is disabled by default, use "-machine microvm,pcie=on" to enable.
ACPI support must be enabled too because the bus is declared in the
DSDT table.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 20200928104256.9241-6-kraxel@redhat.com
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Add a comment with a table listing the IRQs,
both legacy pc and microvm side-by-side.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 20200928104256.9241-5-kraxel@redhat.com
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Fill gpex config struct from memory map, then call the new
acpi_dsdt_add_gpex helper function. No functional change.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 20200928104256.9241-4-kraxel@redhat.com
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Add helper function to generate dsdt aml code for the gpex pci host.
Largely copied from arm/virt. Configuration is handled by passing
a config struct instead of looked up from memory map.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 20200928104256.9241-3-kraxel@redhat.com
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It is defined twice already. Move to a common header file to
remove duplication and make it available to everybody.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 20200928104256.9241-2-kraxel@redhat.com
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staging
* SCSI fix (Dmitry, Li Feng, Li Qiang)
* memory API fixes (Eduardo)
* removal of deprecated '-numa node', 'cpu-add', '-smp' (Igor)
* ACPI fix for VMBus (Jon)
* relocatable install (myself)
* always remove docker containers (myself)
* serial cleanups (Philippe)
* vmware cpuid leaf for tsc and apic frequency (Sunil)
* KVM_FEATURE_ASYNC_PF_INT support (Vitaly)
* i386 XSAVE bugfix (Xiaoyao)
* QOM developer documentation in docs/devel (Eduardo)
* new checkpatch tests (Dov)
* x86_64 syscall fix (Douglas)
* interrupt-based APF fix (Vitaly)
* always create kvmclock (Vitaly)
* fix bios-tables-test (Eduardo)
* KVM PV features cleanup (myself)
* CAN FD (Pavel)
meson:
* fixes (Marc-André, Max, Stefan, Alexander, myself)
* moved libmpathpersist, cocoa, malloc tests (myself)
* support for 0.56 introspected test dependencies (myself)
# gpg: Signature made Wed 30 Sep 2020 18:11:45 BST
# gpg: using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg: issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* remotes/bonzini-gitlab/tags/for-upstream: (86 commits)
hw/net/can: Correct Kconfig dependencies
hw/net/can: Documentation for CTU CAN FD IP open hardware core emulation.
hw/net/can: CTU CAN FD IP open hardware core emulation.
hw/net/can/ctucafd: Add CTU CAN FD core register definitions.
net/can: Add can_dlc2len and can_len2dlc for CAN FD.
hw/net/can: sja1000 ignore CAN FD frames
net/can: Initial host SocketCan support for CAN FD.
target/i386: kvm: do not use kvm_check_extension to find paravirtual capabilities
bios-tables-test: Remove kernel-irqchip=off option
target/i386: always create kvmclock device
target/i386: Fix VM migration when interrupt based APF is enabled
helper_syscall x86_64: clear exception_is_int
checkpatch: Detect '%#' or '%0#' in printf-style format strings
typedefs: Restrict PCMachineState to 'hw/i386/pc.h'
hw/xen: Split x86-specific declaration from generic hardware ones
stubs: Split accelerator / hardware related stubs
sysemu/xen: Add missing 'exec/cpu-common.h' header for ram_addr_t type
hw/i386/xen: Rename X86/PC specific function as xen_hvm_init_pc()
docs: Move object.h overview doc comment to qom.rst
docs: Create docs/devel/qom.rst
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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The original CAN_PCI config option enables multiple SJA1000 PCI boards
emulation build. These boards bridge SJA1000 into I/O or memory
address space of the host CPU and depend on SJA1000 emulation.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Message-Id: <dd332de687bfe52bbec37f5de1d861fb8e620d74.1600069689.git.pisa@cmp.felk.cvut.cz>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Updated MAINTAINERS for CAN bus related emulation as well.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Message-Id: <6d1b8db69efc4e5cfad702d2150e1960e8f63572.1600069689.git.pisa@cmp.felk.cvut.cz>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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The implementation of the model of complete open-source/design/hardware
CAN FD controller. The IP core project has been started and is maintained
by Ondrej Ille at Czech Technical University in Prague.
CTU CAN FD project pages:
https://gitlab.fel.cvut.cz/canbus/ctucanfd_ip_core
CAN bus CTU FEE Projects Listing page:
http://canbus.pages.fel.cvut.cz/
The core is mapped to PCIe card same as on one of its real hardware
adaptations. The device implementing two CTU CAN FD ip cores
is instantiated after CAN bus definition
-object can-bus,id=canbus0-bus
by QEMU parameters
-device ctucan_pci,canbus0=canbus0-bus,canbus1=canbus0-bus
Signed-off-by: Jan Charvat <charvj10@fel.cvut.cz>
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Message-Id: <23e3ca4dcb2cc9900991016910a6cab7686c0e31.1600069689.git.pisa@cmp.felk.cvut.cz>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Definitions of registers and CAN FD frame message box of CTU CAN FD
IP core are generated the specification in CACTUS/IP-XACT format.
CTU CAN FD IP core repository
https://gitlab.fel.cvut.cz/canbus/ctucanfd_ip_core
The location of the CTU CAN IP core specification within
IP core design
spec/CTU/ip/CAN_FD_IP_Core/2.1/CAN_FD_IP_Core.2.1.xml
The header files are generated by pyXact_generator designed
by Ondrej Ille which is based on ipyxact_parser.
The specification is source of header files for driver and emulation,
documentation and VHDL registers map implementation.
Signed-off-by: Jan Charvat <charvj10@fel.cvut.cz>
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Message-Id: <97ae620f724bf1d76f127aaf628f7aec3af0a11c.1600069689.git.pisa@cmp.felk.cvut.cz>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: Jan Charvat <charvj10@fel.cvut.cz>
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Reviewed-by: Vikram Garhwal <fnu.vikram@xilinx.com>
Message-Id: <0a2efc6ef9c458505952ed230e49ae25cad7f324.1600069689.git.pisa@cmp.felk.cvut.cz>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: Jan Charvat <charvj10@fel.cvut.cz>
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Reviewed-by: Vikram Garhwal <fnu.vikram@xilinx.com>
Message-Id: <48d9ebf6b64e7652851c12fe4566e06b44803372.1600069689.git.pisa@cmp.felk.cvut.cz>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: Jan Charvat <charvj10@fel.cvut.cz>
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Reviewed-by: Vikram Garhwal <fnu.vikram@xilinx.com>
Message-Id: <41383d4eb3f35586c696a8e29c4dff4031a81338.1600069689.git.pisa@cmp.felk.cvut.cz>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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capabilities
Paravirtualized features have been listed in KVM_GET_SUPPORTED_CPUID since
Linux 2.6.35 (commit 84478c829d0f, "KVM: x86: export paravirtual cpuid flags
in KVM_GET_SUPPORTED_CPUID", 2010-05-19). It has been more than 10 years,
so remove the fallback code.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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We don't need to use kernel-irqchip=off for irq0 override if IRQ
routing is supported by the host, which is the case since 2009
(IRQ routing was added to KVM in Linux v2.6.30).
This is a more straightforward fix for Launchpad bug #1896263, as
it doesn't require increasing the complexity of the MSR code.
kernel-irqchip=off is for debugging only and there's no need to
increase the complexity of the code just to work around an issue
that was already fixed in the kernel.
Fixes: https://bugs.launchpad.net/bugs/1896263
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20200922194732.2100510-1-ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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QEMU's kvmclock device is only created when KVM PV feature bits for
kvmclock (KVM_FEATURE_CLOCKSOURCE/KVM_FEATURE_CLOCKSOURCE2) are
exposed to the guest. With 'kvm=off' cpu flag the device is not
created and we don't call KVM_GET_CLOCK/KVM_SET_CLOCK upon migration.
It was reported that without these call at least Hyper-V TSC page
clocksouce (which can be enabled independently) gets broken after
migration.
Switch to creating kvmclock QEMU device unconditionally, it seems
to always make sense to call KVM_GET_CLOCK/KVM_SET_CLOCK on migration.
Use KVM_CAP_ADJUST_CLOCK check instead of CPUID feature bits.
Reported-by: Antoine Damhet <antoine.damhet@blade-group.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20200922151934.899555-1-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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VM with interrupt based APF enabled fails to migrate:
qemu-system-x86_64: error: failed to set MSR 0x4b564d02 to 0xf3
We have two issues:
1) There is a typo in kvm_put_msrs() and we write async_pf_int_msr
to MSR_KVM_ASYNC_PF_EN (instead of MSR_KVM_ASYNC_PF_INT)
2) We restore MSR_KVM_ASYNC_PF_EN before MSR_KVM_ASYNC_PF_INT is set
and this violates the check in KVM.
Re-order MSR_KVM_ASYNC_PF_EN/MSR_KVM_ASYNC_PF_INT setting (and
kvm_get_msrs() for consistency) and fix the typo.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20200917102316.814804-1-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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The exception_is_int flag may be set on entry to helper_syscall,
e.g. after a prior interrupt that has returned, and processing
EXCP_SYSCALL as an interrupt causes it to fail so clear this flag.
Signed-off-by: Douglas Crosher <dtc-ubuntu@scieneer.com>
Message-Id: <a7dab33e-eda6-f988-52e9-f3d32db7538d@scieneer.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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According to the coding style document, we should use literal '0x' prefix
instead of printf's '#' flag (which appears as '%#' or '%0#' in the format
string). Add a checkpatch rule to enforce that.
Note that checkpatch already had a similar rule for trace-events files.
Example usage:
$ scripts/checkpatch.pl --file chardev/baum.c
...
ERROR: Don't use '#' flag of printf format ('%#') in format strings, use '0x' prefix instead
#366: FILE: chardev/baum.c:366:
+ DPRINTF("Broken packet %#2x, tossing\n", req); \
...
ERROR: Don't use '#' flag of printf format ('%#') in format strings, use '0x' prefix instead
#472: FILE: chardev/baum.c:472:
+ DPRINTF("unrecognized request %0#2x\n", req);
...
Signed-off-by: Dov Murik <dovmurik@linux.vnet.ibm.com>
Message-Id: <20200914172623.72955-1-dovmurik@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
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The PCMachineState type is only used under hw/i386/.
We don't need to forward-declare it for all architectures,
restrict it to the X86 one.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200908155530.249806-7-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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xen_hvm_init() is restricted to the X86 architecture.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200908155530.249806-6-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Move hardware stubs unrelated from the accelerator to xen-hw-stub.c.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200908155530.249806-5-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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As this header use the ram_addr_t type, it has to include
"exec/cpu-common.h" to avoid odd errors such:
include/sysemu/xen.h:35:44: error: unknown type name 'ram_addr_t'; did you mean 'in_addr_t'?
35 | static inline void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length)
| ^~~~~~~~~~
| in_addr_t
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200908155530.249806-4-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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xen_hvm_init() is only meanful to initialize a X86/PC machine,
rename it as xen_hvm_init_pc().
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200908155530.249806-3-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Move the whole contents of the overview doc comment from object.h
to qom.rst.
This makes the documentation source easier to read and edit, and
also solves the backslash escaping issue at the typecasting macro
examples.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20200910221526.10041-10-ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20200910221526.10041-9-ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Convert all example/codelisting markup to Sphinx code-block.
There are a few sections where backslashes at the end of lines
break code formatting. A comment was added noting that this is
an issue.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20200910221526.10041-8-ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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This indents existing code examples that are not indented yet,
just to make future conversion to Sphinx markup easier to review.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20200910221526.10041-7-ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20200910221526.10041-6-ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Add DOC: section keyword to introduction doc comment, so it will
be rendered by kernel-doc.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20200910221526.10041-5-ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Replace gtkdoc markup with Sphinx ``code`` syntax.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20200910221526.10041-4-ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Use kernel-doc syntax for indicating private and public struct
fields.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20200910221526.10041-3-ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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kernel-doc requires all function parameters to be documented, so
document them all.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20200910221526.10041-2-ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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The qemu_chr_write_buffer() method sends data to the chardev backend for
writing, and then also writes to the log file. In case the chardev
backend only writes part of the data buffer, we need to make sure we
only log the same subset. qemu_chr_write_buffer() will be invoked again
later to write the rest of the buffer.
In the case the chardev backend returns an error though, no further
attempts to likely to be made to write the data. We must therefore write
the entire buffer to the log immediately.
An example where this is important is with the socket backend. This will
return -1 for all writes if no client is currently connected. We still
wish to write data to the log file when no client is present though.
This used to work because the chardev would return "len" to pretend it
had written all data when no client is connected, but this changed to
return an error in
commit 271094474b65de1ad7aaf729938de3d9b9d0d36f
Author: Dima Stepanov <dimastep@yandex-team.ru>
Date: Thu May 28 12:11:18 2020 +0300
char-socket: return -1 in case of disconnect during tcp_chr_write
and this broke the logging, resulting in all data being discarded when
no client is present.
Fixes: https://bugs.launchpad.net/qemu/+bug/1893691
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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it's was deprecated since 3.1
Support for invalid topologies is removed, the user must ensure
that topologies described with -smp include all possible cpus,
i.e. (sockets * cores * threads) == maxcpus or QEMU will
exit with error.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by:
Message-Id: <20200911133202.938754-1-imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Commit 660f79309303d696531ffb394719dfab3e0c42c0 was a bit overzealous
with respect to tests/tcg, which needed quiet-command and $(BUILD_DIR).
Reinstate quiet-command, and replace $(BUILD_DIR) with just the
current directory.
Reported-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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The order of the add_project_link_arguments calls impacts which
arguments are placed between --start-group and --end-group.
OSS-Fuzz coverage builds seem to just add these to CFLAGS:
-fprofile-instr-generate -fcoverage-mapping pthread -Wl,--no-as-needed
-Wl,-ldl -Wl,-lm Wno-unused-command-line-argument
The -Wl,-ldl flag that is enough to shift the fork_fuzz.ld linker-script
back into the linker group. Move the linker-script meson call before the
other calls to make sure the flag is placed correctly.
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Message-Id: <20200909220516.614222-1-alxndr@bu.edu>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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