(In QEMU, we call this the "select" register.)
My memory isn't good enough to memorize what these magic runes
do. Label them to prevent mixups from happening in the future.
Side note: I assume it's safe to always set 0xA0 even though ATA2 claims
these bits are reserved, because ATA3 immediately reinstated that these
bits should be always on. ATA4 and subsequent specs only claim that the
fields are obsolete, so I assume it's safe to leave these set and that
it should work with the widest array of guests.
Signed-off-by: John Snow <jsnow@redhat.com>
Reorder these just a pinch to make them more obvious at a glance what
the addressing mode is.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
I have been staring at this FIXME for years and I never knew what it
meant. I finally stumbled across it!
When writing to the command registers, the old value is shifted into a
HOB copy of the register and the new value is written into the primary
register. When reading registers, the value retrieved is dependent on
the HOB bit in the CONTROL register.
By setting bit 7 (0x80) in CONTROL, any register read will, if it has
one, yield the HOB value for that register instead.
Our code has a problem: We were using bit 7 of the DEVICE register to
model this. We use bus->cmd roughly as the control register already, as
it stores the value from ide_ctrl_write.
Lastly, all command register writes reset the HOB, so fix that, too.
Signed-off-by: John Snow <jsnow@redhat.com>
In real ISA operation, register writes go out to an entire bus channel
and all listening devices receive the write. The devices do not toggle
the DEV bit based on their own configuration, nor does the HBA
intermediate or tamper with that value.
The reality of the matter is that DEV0/DEV1 accordingly will react to
command register writes based on whether or not the device was selected.
This does not fix a known bug, but it makes the code slightly simpler
and more obvious.
Signed-off-by: John Snow <jsnow@redhat.com>
It's the Control register, part of the Control block -- Command is
misleading here. Rename all related functions and constants.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
libFuzzer triggered the following assertion:
cat << EOF | qemu-system-i386 -M pc-q35-5.0 \
-nographic -monitor none -serial none -qtest stdio
outl 0xcf8 0x8000fa24
outl 0xcfc 0xe1068000
outl 0xcf8 0x8000fa04
outw 0xcfc 0x7
outl 0xcf8 0x8000fb20
write 0xe1068304 0x1 0x21
write 0xe1068318 0x1 0x21
write 0xe1068384 0x1 0x21
write 0xe1068398 0x2 0x21
EOF
qemu-system-i386: exec.c:3621: address_space_unmap: Assertion `mr != NULL' failed.
Aborted (core dumped)
This is because we don't check the return value from dma_memory_map()
which can return NULL, then we call dma_memory_unmap(NULL) which is
illegal. Fix by only unmap if the value is not NULL (and the size is
not the expected one).
Cc: qemu-stable@nongnu.org
Reported-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200718072854.7001-1-f4bug@amsat.org
Fixes: f6ad2e32f8 ("ahci: add ahci emulation")
BugLink: https://bugs.launchpad.net/qemu/+bug/1884693
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
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>
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>
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>
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>
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>
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>
Xen accelerator requires specific changes to a machine to be able
to use it. See for example the 'Xen PC' machine configure its PCI
bus calling pc_xen_hvm_init_pci(). There is no 'Xen Q35' machine
declared. This code was probably added while introducing the Q35
machine, based on the existing PC machine (see commit df2d8b3ed4
"Introduce q35 pc based chipset emulator"). Remove the unreachable
code to simplify this file.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Anthony PERARD <anthony.perard@citrix.com>
Message-Id: <20200722082517.18708-1-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Currently in 'megasas_map_sgl' when 'iov_count=0' will just return
success however the 'cmd' doens't contain any iov. This will cause
the assert in 'scsi_dma_complete' failed. This is because in
'dma_blk_cb' the 'dbs->sg_cur_index == dbs->sg->nsg' will be true
and just call 'dma_complete'. However now there is no aiocb returned.
This fixes the LP#1878263:
-->https://bugs.launchpad.net/qemu/+bug/1878263
Reported-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Li Qiang <liq3ea@163.com>
Message-Id: <20200815141940.44025-3-liq3ea@163.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The caller of 'megasas_map_sgl' will only check if the return
is zero or not. If it return 0 it means success, as in the next
patch we will consider 'iov_count=0' is an error, so let's
return -1 to indicate a failure.
Signed-off-by: Li Qiang <liq3ea@163.com>
Message-Id: <20200815141940.44025-2-liq3ea@163.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Several important steps during device scan depend on SCSI type of the
device. For example, max_transfer property is only determined and
assigned if the device has the type of TYPE_DISK.
Host-managed ZBC disks retain most of the properties of regular SCSI
drives, but they have their own SCSI device type, 0x14. This prevents
the proper assignment of max_transfer property for HM-zoned devices in
scsi-generic driver leading to I/O errors if the maximum i/o size
calculated at the guest exceeds the host value.
To fix this, define TYPE_ZBC to have the standard value from SCSI ZBC
standard spec. Several scan steps that were previously done only for
TYPE_DISK devices, are now performed for the SCSI devices having
TYPE_ZBC too.
Reported-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Message-Id: <20200811225122.17342-3-dmitry.fomichev@wdc.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Instead of overwritting the properties of the generic 'state'
object, alias them.
Note we can now propagate the "baudbase" property.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200907015535.827885-7-f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Make the "wakeup" property introduced in commit 9826fd597d
("suspend: make serial ports wakeup the guest") a boolean.
As we want to reuse the generic serial properties in the
ISA model (next commit), expose this property.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200907015535.827885-6-f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The serial_mm_read/write() handlers from the TYPE_SERIAL_MM device
call the serial_ioport_read/write() handlers with shifted offset.
When looking at the trace events from this MMIO device, it is
confusing to read the accesses as I/O. Simplify using generic
trace event names which make sense the various uses.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200907015535.827885-5-f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
All useful DPRINTF() calls have been converted to trace
events. Remove a pointless one in the IOEventHandler,
and drop the DEBUG_SERIAL ifdef'ry.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200907015535.827885-4-f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Convert the old debug PRINTF() call to display the UART
baudrate to a trace event.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200907015535.827885-3-f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The serial device has 8 registers, each 8-bit. The MemoryRegionOps
'serial_io_ops' is initialized with max_access_size=1, and all
memory_region_init_io() callers correctly set the region size to
8 bytes:
- serial_io_realize
- serial_isa_realizefn
- serial_pci_realize
- multi_serial_pci_realize
It is safe to assert the offset argument of serial_ioport_read()
and serial_ioport_write() is always less than 8.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200907015535.827885-2-f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
TYPE_SERIAL_IO is a subset of TYPE_SERIAL_MM, and it is
not used anymore. Remove it.
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200907011538.818996-3-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The 'mipssim' is not a real hardware, it is a simulator.
There is an ISA MMIO space mapped at 0x1fd00000, however
this is not a real ISA bus (no ISA IRQ). So can not use
the TYPE_ISA_SERIAL device...
Instead we have been using a plain MMIO device, but named
it IO.
TYPE_SERIAL_IO is a subset of TYPE_SERIAL_MM, using
regshift=0 and endianness=DEVICE_LITTLE_ENDIAN.
Directly use the TYPE_SERIAL_MM device, enforcing the
regshift/endianness values. 'regshift' default is already
'0'. 'endianness' is meaningless for 8-bit accesses.
This change breaks migration back compatibility, but
this is not an issue for the mipssim machine.
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200907011538.818996-2-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
current code permits only nodeids in [0..MAX_NODES) range
due to nodeid check in
parse_numa_node()
if (nodenr >= MAX_NODES) {
error_setg(errp, "Max number of NUMA nodes reached: %"
so subj fixup is not reachable, drop it.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20200911084410.788171-4-imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
it was deprecated since 4.1
commit 4bb4a2732e (numa: deprecate implict memory distribution between nodes)
Users of existing VMs, wishing to preserve the same RAM distribution,
should configure it explicitly using ``-numa node,memdev`` options.
Current RAM distribution can be retrieved using HMP command
`info numa` and if separate memory devices (pc|nv-dimm) are present
use `info memory-device` and subtract device memory from output of
`info numa`.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20200911084410.788171-2-imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jon Doron <arilou@gmail.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20200715084326.678715-2-arilou@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Qemu will send GET_INFLIGHT_FD and SET_INFLIGH_FD to backend, and
the backend setup the inflight memory to track the io.
Change-Id: I805d6189996f7a1b44c65f0b12ef7473b1789510
Signed-off-by: Li Feng <fengli@smartx.com>
Message-Id: <20200909122021.1055174-1-fengli@smartx.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Only qemu-system-FOO and qemu-storage-daemon provide QMP
monitors, therefore such declarations and definitions are
irrelevant for user-mode emulation.
Extracting the PCI commands to their own schema reduces the size of
the qapi-misc* headers generated, and pulls less QAPI-generated code
into user-mode.
Suggested-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200913195348.1064154-9-philmd@redhat.com>
[Commit message tweaked]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Only qemu-system-FOO and qemu-storage-daemon provide QMP
monitors, therefore such declarations and definitions are
irrelevant for user-mode emulation.
Extracting the ACPI commands to their own schema reduces the size of
the qapi-misc* headers generated, and pulls less QAPI-generated code
into user-mode.
Suggested-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200913195348.1064154-8-philmd@redhat.com>
[Commit message tweaked]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Only qemu-system-FOO and qemu-storage-daemon provide QMP
monitors, therefore such declarations and definitions are
irrelevant for user-mode emulation.
Restricting the memory commands to machine.json pulls less
QAPI-generated code into user-mode.
Acked-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200913195348.1064154-7-philmd@redhat.com>
[Commit message tweaked]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Only qemu-system-FOO and qemu-storage-daemon provide QMP
monitors, therefore such declarations and definitions are
irrelevant for user-mode emulation.
Restricting the query-vm-generation-id command to machine.json pulls
less QAPI-generated code into user-mode.
Acked-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200913195348.1064154-5-philmd@redhat.com>
[Commit message tweaked]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Only qemu-system-FOO and qemu-storage-daemon provide QMP
monitors, therefore such declarations and definitions are
irrelevant for user-mode emulation.
Restricting the balloon-related commands to machine.json pulls less
QAPI-generated code into user-mode.
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200913195348.1064154-4-philmd@redhat.com>
[Commit message tweaked]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Restricting LostTickPolicy to machine.json pulls slightly less
QAPI-generated code into user-mode.
Acked-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200913195348.1064154-2-philmd@redhat.com>
[Add rationale to commit message]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Fixes and tests all over the place.
Batch iommu updates for vdpa.
Removal of deprecated cpu hotplug commands.
SMBIOS OEM string support.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
virtio,pc,acpi: fixes, tests
Fixes and tests all over the place.
Batch iommu updates for vdpa.
Removal of deprecated cpu hotplug commands.
SMBIOS OEM string support.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Tue 29 Sep 2020 08:09:21 BST
# gpg: using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg: issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>" [full]
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67
# Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469
* remotes/mst/tags/for_upstream: (48 commits)
libvhost-user: return on error in vu_log_queue_fill()
libvhost-user: return early on virtqueue errors
hw: virtio-pmem: detach the element fromt the virtqueue when error occurs
tests/acpi: update golden master DSDT binary table blobs for q35
piix4: don't reserve hw resources when hotplug is off globally
Add ACPI DSDT tables for q35 that are being updated by the next patch
tests/acpi: add newly added acpi DSDT table blob for pci bridge hotplug flag
tests/acpi: unit test for 'acpi-pci-hotplug-with-bridge-support' bridge flag
tests/acpi: list added acpi table binary file for pci bridge hotplug test
i440fx/acpi: do not add hotplug related amls for cold plugged bridges
Fix a gap where acpi_pcihp_find_hotplug_bus() returns a non-hotpluggable bus
tests/acpi: add a new ACPI table in order to test root pci hotplug on/off
tests/acpi: add new unit test to test hotplug off/on feature on the root pci bus
tests/acpi: mark addition of table DSDT.roothp for unit testing root pci hotplug
vhost-user: save features of multiqueues if chardev is closed
qemu-options: document SMBIOS type 11 settings
hw/smbios: report error if table size is too large
hw/smbios: support loading OEM strings values from a file
tests: acpi: update acpi blobs with new AML
x68: acpi: trigger SMI before sending hotplug Notify event to OSPM
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Allows to switch the (vga mode) framebuffer into bigendian mode
by setting the property, simliar to stdvga.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20200928085335.21961-2-kraxel@redhat.com
Replace dpi with width_mm/height_mm in qemu_edid_info.
Use it when set (non-zero) to compute the DPI and generate the EDID.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20200927145751.365446-3-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Divide the resolution by the DPI, and multiply to mm.
Note the computation done for edid[21/22] is correct (in cm).
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20200927145751.365446-2-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
When resetting virtio-gpu, virgl_renderer_reset() should be
called to ensure that the virglrenderer status is correct.
Signed-off-by: Guoqing Zhang <zhangguoqing.kernel@bytedance.com>
Reviewed-by: Qi Liu<liuqi.16@bytedance.com>
Message-id: 20200918111632.37354-1-zhangguoqing.kernel@bytedance.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
If error occurs while processing the virtio request we should call
'virtqueue_detach_element' to detach the element from the virtqueue
before free the elem.
Signed-off-by: Li Qiang <liq3ea@163.com>
Message-Id: <20200813165125.59928-1-liq3ea@163.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Fixes: 5f503cd9f3 ("virtio-pmem: add virtio device")
Reviewed-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
When acpi hotplug is turned off for both root pci bus as well as for pci
bridges, we should not generate the related ACPI code for DSDT table or
initialize related hw ports or reserve hw resources. This change makes
sure all those operations are turned off in the case ACPI pci hotplug is
off globally.
In this change, we also make sure ACPI code for the PCNT method are only
added when bsel is enabled for the corresponding pci bus or bridge hotplug
is turned on.
As q35 machines do not use bsel for it's pci buses at this point in time, this
change affects DSDT acpi table for q35 machines as well. Therefore, we will
also need to commit the updated golden master DSDT table acpi binary blobs as
well. Following is the list of blobs which needs updating:
tests/data/acpi/q35/DSDT
tests/data/acpi/q35/DSDT.acpihmat
tests/data/acpi/q35/DSDT.bridge
tests/data/acpi/q35/DSDT.cphp
tests/data/acpi/q35/DSDT.dimmpxm
tests/data/acpi/q35/DSDT.ipmibt
tests/data/acpi/q35/DSDT.memhp
tests/data/acpi/q35/DSDT.mmio64
tests/data/acpi/q35/DSDT.numamem
tests/data/acpi/q35/DSDT.tis
These tables are updated in the following commit. Without the updated table
blobs, the unit tests would fail with this patch.
Signed-off-by: Ani Sinha <ani@anisinha.ca>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20200918084111.15339-11-ani@anisinha.ca>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Cold plugged bridges are not hot unpluggable, even when their hotplug
property (acpi-pci-hotplug-with-bridge-support) is turned off. Please see
the function acpi_pcihp_pc_no_hotplug(). However, with
the current implementaton, Windows would try to hot-unplug a pci bridge when
it's hotplug switch is off. This is regardless of whether there are devices
attached to the bridge. This is because we add ACPI code like _EJ0 etc for the
pci slot where the bridge is cold plugged.
In this fix, we identify a cold plugged bridge and for cold plugged bridges,
we do not add the appropriate ACPI methods that are used by the OS
to identify a hot-pluggable/unpluggable pci device. After this change, Windows
does not detect the cold plugged pci bridge as ejectable.
As a result of the patch, the following are the changes to the DSDT ACPI
table:
@@ -858,38 +858,33 @@
Return (Zero)
}
Method (_S2D, 0, NotSerialized) // _S2D: S2 Device State
{
Return (Zero)
}
Method (_S3D, 0, NotSerialized) // _S3D: S3 Device State
{
Return (Zero)
}
}
Device (S18)
{
- Name (_SUN, 0x03) // _SUN: Slot User Number
Name (_ADR, 0x00030000) // _ADR: Address
- Method (_EJ0, 1, NotSerialized) // _EJx: Eject Device
- {
- PCEJ (BSEL, _SUN)
- }
}
Device (S20)
{
Name (_SUN, 0x04) // _SUN: Slot User Number
Name (_ADR, 0x00040000) // _ADR: Address
Method (_EJ0, 1, NotSerialized) // _EJx: Eject Device
{
PCEJ (BSEL, _SUN)
}
}
Device (S28)
{
Name (_SUN, 0x05) // _SUN: Slot User Number
Name (_ADR, 0x00050000) // _ADR: Address
@@ -1148,37 +1143,32 @@
PCEJ (BSEL, _SUN)
}
}
Device (SF8)
{
Name (_SUN, 0x1F) // _SUN: Slot User Number
Name (_ADR, 0x001F0000) // _ADR: Address
Method (_EJ0, 1, NotSerialized) // _EJx: Eject Device
{
PCEJ (BSEL, _SUN)
}
}
Method (DVNT, 2, NotSerialized)
{
- If ((Arg0 & 0x08))
- {
- Notify (S18, Arg1)
- }
-
If ((Arg0 & 0x10))
{
Notify (S20, Arg1)
}
If ((Arg0 & 0x20))
{
Notify (S28, Arg1)
}
If ((Arg0 & 0x40))
{
Notify (S30, Arg1)
}
If ((Arg0 & 0x80))
While at it, I have also updated a stale comment.
Signed-off-by: Ani Sinha <ani@anisinha.ca>
Suggested-by: Julia Suvorova <jusual@redhat.com>
Reviewed-by: Julia Suvorova <jusual@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20200918084111.15339-6-ani@anisinha.ca>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
When ACPI hotplug for the root bus is disabled, the bsel property for that
bus is not set. Please see the following commit:
3d7e78aa77 ("Introduce a new flag for i440fx to disable PCI hotplug on the
root bus").
As a result, when acpi_pcihp_find_hotplug_bus() is called
with bsel set to 0, it may return the root bus. This can cause devices
attached to the root bus to get hot-unplugged if the user issues the following
set of commmands:
outl 0xae10 0
outl 0xae08 your_slot
Thanks to Julia for pointing this out here:
https://www.mail-archive.com/qemu-devel@nongnu.org/msg734548.html
In this patch, we fix the issue in this function by checking if the bus which
is returned by the function is actually hotpluggable. If not, we simply return
NULL. This avoids the scenario where we were returning a non-hotpluggable bus.
Signed-off-by: Ani Sinha <ani@anisinha.ca>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20200918084111.15339-5-ani@anisinha.ca>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The SMBIOS 2.1 entry point uses a uint16 data type for reporting the
total length of the tables. If the user passes -smbios configuration to
QEMU that causes the table size to exceed this limit then various bad
behaviours result, including
- firmware hangs in an infinite loop
- firmware triggers a KVM crash on bad memory access
- firmware silently discards user's SMBIOS data replacing it with
a generic data set.
Limiting the size to 0xffff in QEMU avoids triggering most of these
problems. There is a remaining bug in SeaBIOS which tries to prepend its
own data for table 0, and does not check whether there is sufficient
space before attempting this.
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200923133804.2089190-3-berrange@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Some applications want to pass quite large values for the OEM strings
entries. Rather than having huge strings on the command line, it would
be better to load them from a file, as supported with -fw_cfg.
This introduces the "path" parameter allowing for:
$ echo -n "thisthing" > mydata.txt
$ qemu-system-x86_64 \
-smbios type=11,value=something \
-smbios type=11,path=mydata.txt \
-smbios type=11,value=somemore \
...other args...
Now in the guest
$ dmidecode -t 11
Getting SMBIOS data from sysfs.
SMBIOS 2.8 present.
Handle 0x0E00, DMI type 11, 5 bytes
OEM Strings
String 1: something
String 2: thisthing
String 3: somemore
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200923133804.2089190-2-berrange@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
