The default NIC creation seems a bit hackish to me. I don't understand
why each platform has to call pci_nic_init_nofail() from a point in the
code where it actually has a pointer to the PCI bus, and then we have
the special cases for things like ne2k_isa.
If qmp_device_add() can *find* the appropriate bus and instantiate
the device on it, why can't we just do that from generic code for
creating the default NICs too?
But that isn't a yak I want to shave today. Add a xenbus field to the
PCMachineState so that it can make its way from pc_basic_device_init()
to pc_nic_init() and be handled as a special case like ne2k_isa is.
Now we can launch emulated Xen guests with '-nic user'.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
This allows us to use Xen PV networking with emulated Xen guests, and to
add them on the command line or hotplug.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
When the Xen guest asks to unplug *emulated* NICs, it's kind of unhelpful
also to unplug the peer of the *Xen* PV NIC.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
The primary console is special because the toolstack maps a page into
the guest for its ring, and also allocates the guest-side event channel.
The guest's grant table is even primed to export that page using a known
grant ref#. Add support for all that in emulated mode, so that we can
have a primary console.
For reasons unclear, the backends running under real Xen don't just use
a mapping of the well-known GNTTAB_RESERVED_CONSOLE grant ref (which
would also be in the ring-ref node in XenStore). Instead, the toolstack
sets the ring-ref node of the primary console to the GFN of the guest
page. The backend is expected to handle that special case and map it
with foreignmem operations instead.
We don't have an implementation of foreignmem ops for emulated Xen mode,
so just make it map GNTTAB_RESERVED_CONSOLE instead. This would probably
work for real Xen too, but we can't work out how to make real Xen create
a primary console of type "ioemu" to make QEMU drive it, so we can't
test that; might as well leave it as it is for now under Xen.
Now at last we can boot the Xen PV shim and run PV kernels in QEMU.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
This allows (non-primary) console devices to be created on the command
line and hotplugged.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
If xen_backend_device_create() fails to instantiate a device, the XenBus
code will just keep trying over and over again each time the bus is
re-enumerated, as long as the backend appears online and in
XenbusStateInitialising.
The only thing which prevents the XenBus code from recreating duplicates
of devices which already exist, is the fact that xen_device_realize()
sets the backend state to XenbusStateInitWait. If the attempt to create
the device doesn't get *that* far, that's when it will keep getting
retried.
My first thought was to handle errors by setting the backend state to
XenbusStateClosed, but that doesn't work for XenConsole which wants to
*ignore* any device of type != "ioemu" completely.
So, make xen_backend_device_create() *keep* the XenBackendInstance for a
failed device, and provide a new xen_backend_exists() function to allow
xen_bus_type_enumerate() to check whether one already exists before
creating a new one.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
The primary Xen console is special. The guest's side is set up for it by
the toolstack automatically and not by the standard PV init sequence.
Accordingly, its *frontend* doesn't appear in …/device/console/0 either;
instead it appears under …/console in the guest's XenStore node.
To allow the Xen console driver to override the frontend path for the
primary console, add a method to the XenDeviceClass which can be used
instead of the standard xen_device_get_frontend_path()
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
There's no need to force the user to assign a vdev. We can automatically
assign one, starting at xvda and searching until we find the first disk
name that's unused.
This means we can now allow '-drive if=xen,file=xxx' to work without an
explicit separate -driver argument, just like if=virtio.
Rip out the legacy handling from the xenpv machine, which was scribbling
over any disks configured by the toolstack, and didn't work with anything
but raw images.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Acked-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Paul Durrant <paul@xen.org>
This is kind of redundant since without being able to get these through
some other method (HVMOP_get_param) the guest wouldn't be able to access
XenStore in order to find them.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
This will allow Linux guests (since v6.0) to use the per-vCPU upcall
vector delivered as MSI through the local APIC.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
... in order to advertise the XEN_HVM_CPUID_UPCALL_VECTOR feature,
which will come in a subsequent commit.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Acked-by: Paul Durrant <paul@xen.org>
A previous implementation of this stuff used a 64-bit field for all of
the port information (vcpu/type/type_val) and did atomic exchanges on
them. When I implemented that in Qemu I regretted my life choices and
just kept it simple with locking instead.
So there's no need for the XenEvtchnPort to be so simplistic. We can
use a union for the pirq/virq/interdomain information, which lets us
keep a separate bit for the 'remote domain' in interdomain ports. A
single bit is enough since the only possible targets are loopback or
qemu itself.
So now we can ditch PORT_INFO_TYPEVAL_REMOTE_QEMU and the horrid
manual masking, although the in-memory representation is identical
so there's no change in the saved state ABI.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
* Rename ext_icboz to ext_zicboz
* Rename ext_icbom to ext_zicbom
* Rename ext_icsr to ext_zicsr
* Rename ext_ifencei to ext_zifencei
* Add RISC-V Virtual IRQs and IRQ filtering support
* Change default linux-user cpu to 'max'
* Update 'virt' machine core limit
* Add query-cpu-model-expansion API
* Rename epmp to smepmp and expose the extension
* Clear pmp/smepmp bits on reset
* Ignore pmp writes when RW=01
* Support zicntr/zihpm flags and disable support
* Correct CSR_MSECCFG operations
* Update mail address for Weiwei Li
* Update RISC-V vector crypto to ratified v1.0.0
* Clear the Ibex/OpenTitan SPI interrupts even if disabled
* Set the OpenTitan priv to 1.12.0
* Support discontinuous PMU counters
-----BEGIN PGP SIGNATURE-----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=2A+W
-----END PGP SIGNATURE-----
Merge tag 'pull-riscv-to-apply-20231107' of https://github.com/alistair23/qemu into staging
Third RISC-V PR for 8.2
* Rename ext_icboz to ext_zicboz
* Rename ext_icbom to ext_zicbom
* Rename ext_icsr to ext_zicsr
* Rename ext_ifencei to ext_zifencei
* Add RISC-V Virtual IRQs and IRQ filtering support
* Change default linux-user cpu to 'max'
* Update 'virt' machine core limit
* Add query-cpu-model-expansion API
* Rename epmp to smepmp and expose the extension
* Clear pmp/smepmp bits on reset
* Ignore pmp writes when RW=01
* Support zicntr/zihpm flags and disable support
* Correct CSR_MSECCFG operations
* Update mail address for Weiwei Li
* Update RISC-V vector crypto to ratified v1.0.0
* Clear the Ibex/OpenTitan SPI interrupts even if disabled
* Set the OpenTitan priv to 1.12.0
* Support discontinuous PMU counters
# -----BEGIN PGP SIGNATURE-----
#
# iQIzBAABCAAdFiEEaukCtqfKh31tZZKWr3yVEwxTgBMFAmVJoOEACgkQr3yVEwxT
# gBPwcw/5AXgSVu521IHpobofq4Skc2rpO9P0Hep3IniBuS+5+h2XM3fwWNBaeeGj
# LZgdXDrCfcCnPuFh2I5j1D885xJDncDF4LET9EFtxK+BTT8eC5JpaCnORdV3Zd2T
# C7qdq1r4J/wKBel3cAz1jlLXc2Pssle4NFaMZGmOGlNX/mLJUYkI6BwKG9wNiCI+
# cCRQW5bEv9g8XzPYPsIKhX9aTegDKdV5x4Xj3YyVs8qkZTVM7Ona8GTpy6eShNfL
# h/RW+yvSxLwfKC9YJHesjI1oqhLsAuA7hFu5AVHiedFNAD5FevMZsZwrqjrmeBOG
# 5awBw9XgfXFFl7jQ0VQVRknt/PFANzTmGGbjLUkaXgJ6iTmH7oIMzwbkx2pM/0Qd
# HV2EboUPe5rJl0SNhcDMCJkYJYpt4z6TVXFpN5p10WU4K1AJXZf9P3YkChcxWiSK
# B4DlY4ax3W77voySwbKCvJRIRWCFQZmtl7doFY5dEQz2ERcNfI7VIB1GKIj7BlGm
# AVTCc5G9KghsaB8q0BzYbDplzCggdaaUBRgpIgLS/n22GKJlOisFwMCawWquPkEw
# i0t3ftt+Ket4Qnnq+dO4W3ehR4qW1/XatCWgQ3NCSgUeS4/9VK3h/nz5t+L7iKwp
# mjp86gNN11wcJRsBIIV7nOAmSAs9ybCm2F4J6YAyh3n1IlRVN0Q=
# =2A+W
# -----END PGP SIGNATURE-----
# gpg: Signature made Tue 07 Nov 2023 10:28:49 HKT
# gpg: using RSA key 6AE902B6A7CA877D6D659296AF7C95130C538013
# gpg: Good signature from "Alistair Francis <alistair@alistair23.me>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 6AE9 02B6 A7CA 877D 6D65 9296 AF7C 9513 0C53 8013
* tag 'pull-riscv-to-apply-20231107' of https://github.com/alistair23/qemu: (49 commits)
docs/about/deprecated: Document RISC-V "pmu-num" deprecation
target/riscv: Add "pmu-mask" property to replace "pmu-num"
target/riscv: Use existing PMU counter mask in FDT generation
target/riscv: Don't assume PMU counters are continuous
target/riscv: Propagate error from PMU setup
target/riscv: cpu: Set the OpenTitan priv to 1.12.0
hw/ssi: ibex_spi_host: Clear the interrupt even if disabled
disas/riscv: Replace TABs with space
disas/riscv: Add support for vector crypto extensions
disas/riscv: Add rv_codec_vror_vi for vror.vi
disas/riscv: Add rv_fmt_vd_vs2_uimm format
target/riscv: Move vector crypto extensions to riscv_cpu_extensions
target/riscv: Expose Zvks[c|g] extnesion properties
target/riscv: Add cfg properties for Zvks[c|g] extensions
target/riscv: Expose Zvkn[c|g] extnesion properties
target/riscv: Add cfg properties for Zvkn[c|g] extensions
target/riscv: Expose Zvkb extension property
target/riscv: Replace Zvbb checking by Zvkb
target/riscv: Add cfg property for Zvkb extension
target/riscv: Expose Zvkt extension property
...
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
- One patch to make qcow2's discard-no-unref option do better what it is
supposed to do (i.e. prevent fragmentation)
- Two fixes for zoned requests
-----BEGIN PGP SIGNATURE-----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=5w7S
-----END PGP SIGNATURE-----
Merge tag 'pull-block-2023-11-06' of https://gitlab.com/hreitz/qemu into staging
Block patches:
- One patch to make qcow2's discard-no-unref option do better what it is
supposed to do (i.e. prevent fragmentation)
- Two fixes for zoned requests
# -----BEGIN PGP SIGNATURE-----
#
# iQJGBAABCAAwFiEEy2LXoO44KeRfAE00ofpA0JgBnN8FAmVJHbgSHGhyZWl0ekBy
# ZWRoYXQuY29tAAoJEKH6QNCYAZzfLn4QAKxuUYZaXirv6K4U2tW4aAJtc5uESdwv
# WYhG7YU7MleBGCY0fRoih5thrPrzRLC8o1QhbRcA36+/PAZf4BYrJEfqLUdzuN5x
# 6Vb1n3NRUzPD1+VfL/B9hVZhFbtTOUZuxPGEqCoHAmqBaeKuYRT1bLZbtRtPVLSk
# 5eTMiyrpRMlBWc7O71eGKLqU4k0vAznwHBGf2Z93qWAsKcRZCwbAWYa7Q6rJ9jJ8
# 1jNsQuAk0p74/uGEpFhoEVrFEcV6pMbI4+jB9i0t9YYxT0tLIdIX1VUx+AHJfItk
# IF2stB6SFOaAy2W3Fn+0oJvz40aMLzg9VjEeTpGmdlKC67ZTYa6Obwzy5WNLPIap
# k7VUheUEe8qoKUtxQNxGLR/HKEJSFXyhU0lgAGxE1gl2xc1QFFFsrimpwFd3d37j
# 3PwfhjARHonf4ZXgsvtIjb7nG9seMZYO7Vht0OztJyW8c2XN5OFVPir9xLbd9VUg
# wZNGB8jAsHgj77+S/mRIwpP+laKL8wB7zYZ1mgFI98QJIYqL8tGdV/IiUhLljHzc
# XAmwekOhBMMbgHhliBy9zDuTy59+zZ0FoxZPn/JvBjqBAkEnz9EbhHxi2imQg+1d
# XSoLbx1X1yEbepWz8mCGiveLIPkt+3qMJuuQF76nURaA+nm3tCl/nKca6QLnVKzU
# 2QtPWS0qRmwd
# =5w7S
# -----END PGP SIGNATURE-----
# gpg: Signature made Tue 07 Nov 2023 01:09:12 HKT
# gpg: using RSA key CB62D7A0EE3829E45F004D34A1FA40D098019CDF
# gpg: issuer "hreitz@redhat.com"
# gpg: Good signature from "Hanna Reitz <hreitz@redhat.com>" [unknown]
# gpg: WARNING: The key's User ID is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: CB62 D7A0 EE38 29E4 5F00 4D34 A1FA 40D0 9801 9CDF
* tag 'pull-block-2023-11-06' of https://gitlab.com/hreitz/qemu:
file-posix: fix over-writing of returning zone_append offset
block/file-posix: fix update_zones_wp() caller
qcow2: keep reference on zeroize with discard-no-unref enabled
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* Support for non 64b IOVA space
* Introduction of a PCIIOMMUOps callback structure to ease future
extensions
* Fix for a buffer overrun when writing the VF token
* PPC cleanups preparing ground for IOMMUFD support
-----BEGIN PGP SIGNATURE-----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=/Du0
-----END PGP SIGNATURE-----
Merge tag 'pull-vfio-20231106' of https://github.com/legoater/qemu into staging
vfio queue:
* Support for non 64b IOVA space
* Introduction of a PCIIOMMUOps callback structure to ease future
extensions
* Fix for a buffer overrun when writing the VF token
* PPC cleanups preparing ground for IOMMUFD support
# -----BEGIN PGP SIGNATURE-----
#
# iQIzBAABCAAdFiEEoPZlSPBIlev+awtgUaNDx8/77KEFAmVI+bIACgkQUaNDx8/7
# 7KHW4g/9FmgX0k2Elm1BAul3slJtuBT8/iHKfK19rhXICxhxS5xBWJA8FmosTWAT
# 91YqQJhOHARxLd9VROfv8Fq8sAo+Ys8bP3PTXh5satjY5gR9YtmMSVqvsAVLn7lv
# a/0xp7wPJt2UeKzvRNUqFXNr7yHPwxFxbJbmmAJbNte8p+TfE2qvojbJnu7BjJbg
# sTtS/vFWNJwtuNYTkMRoiZaUKEoEZ8LnslOqKUjgeO59g4i3Dq8e2JCmHANPFWUK
# cWmr7AqcXgXEnLSDWTtfN53bjcSCYkFVb4WV4Wv1/7hUF5jQ4UR0l3B64xWe0M3/
# Prak3bWOM/o7JwLBsgaWPngXA9V0WFBTXVF4x5qTwhuR1sSV8MxUvTKxI+qqiEzA
# FjU89oSZ+zXId/hEUuTL6vn1Th8/6mwD0L9ORchNOQUKzCjBzI4MVPB09nM3AdPC
# LGThlufsZktdoU2KjMHpc+gMIXQYsxkgvm07K5iZTZ5eJ4tV5KB0aPvTZppGUxe1
# YY9og9F3hxjDHQtEuSY2rzBQI7nrUpd1ZI5ut/3ZgDWkqD6aGRtMme4n4GsGsYb2
# Ht9+d2RL9S8uPUh+7rV8K/N3+vXgXRaEYTuAScKtflEbA7YnZA5nUdMng8x0kMTQ
# Y73XCd4UGWDfSSZsgaIHGkM/MRIHgmlrfcwPkWqWW9vF+92O6Hw=
# =/Du0
# -----END PGP SIGNATURE-----
# gpg: Signature made Mon 06 Nov 2023 22:35:30 HKT
# gpg: using RSA key A0F66548F04895EBFE6B0B6051A343C7CFFBECA1
# gpg: Good signature from "Cédric Le Goater <clg@redhat.com>" [unknown]
# gpg: aka "Cédric Le Goater <clg@kaod.org>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: A0F6 6548 F048 95EB FE6B 0B60 51A3 43C7 CFFB ECA1
* tag 'pull-vfio-20231106' of https://github.com/legoater/qemu: (22 commits)
vfio/common: Move vfio_host_win_add/del into spapr.c
vfio/spapr: Make vfio_spapr_create/remove_window static
vfio/container: Move spapr specific init/deinit into spapr.c
vfio/container: Move vfio_container_add/del_section_window into spapr.c
vfio/container: Move IBM EEH related functions into spapr_pci_vfio.c
util/uuid: Define UUID_STR_LEN from UUID_NONE string
util/uuid: Remove UUID_FMT_LEN
vfio/pci: Fix buffer overrun when writing the VF token
util/uuid: Add UUID_STR_LEN definition
hw/pci: modify pci_setup_iommu() to set PCIIOMMUOps
test: Add some tests for range and resv-mem helpers
virtio-iommu: Consolidate host reserved regions and property set ones
virtio-iommu: Implement set_iova_ranges() callback
virtio-iommu: Record whether a probe request has been issued
range: Introduce range_inverse_array()
virtio-iommu: Introduce per IOMMUDevice reserved regions
util/reserved-region: Add new ReservedRegion helpers
range: Make range_compare() public
virtio-iommu: Rename reserved_regions into prop_resv_regions
vfio: Collect container iova range info
...
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This driver is like virtio-balloon on steroids for Windows guests:
it allows both changing the guest memory allocation via ballooning and
inserting pieces of extra RAM into it on demand from a provided memory
backend via Windows-native Hyper-V Dynamic Memory protocol.
* Preparatory patches to support empty memory devices and ones with
large alignment requirements.
* Revert of recently added "hw/virtio/virtio-pmem: Replace impossible
check by assertion" commit 5960f254db since this series makes this
situation possible again.
* Protocol definitions.
* Hyper-V DM protocol driver (hv-balloon) base (ballooning only).
* Hyper-V DM protocol driver (hv-balloon) hot-add support.
* qapi query-memory-devices support for the driver.
* qapi HV_BALLOON_STATUS_REPORT event.
* The relevant PC machine plumbing.
* New MAINTAINERS entry for the above.
-----BEGIN PGP SIGNATURE-----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=RAb0
-----END PGP SIGNATURE-----
Merge tag 'pull-hv-balloon-20231106' of https://github.com/maciejsszmigiero/qemu into staging
Hyper-V Dynamic Memory protocol driver.
This driver is like virtio-balloon on steroids for Windows guests:
it allows both changing the guest memory allocation via ballooning and
inserting pieces of extra RAM into it on demand from a provided memory
backend via Windows-native Hyper-V Dynamic Memory protocol.
* Preparatory patches to support empty memory devices and ones with
large alignment requirements.
* Revert of recently added "hw/virtio/virtio-pmem: Replace impossible
check by assertion" commit 5960f254db since this series makes this
situation possible again.
* Protocol definitions.
* Hyper-V DM protocol driver (hv-balloon) base (ballooning only).
* Hyper-V DM protocol driver (hv-balloon) hot-add support.
* qapi query-memory-devices support for the driver.
* qapi HV_BALLOON_STATUS_REPORT event.
* The relevant PC machine plumbing.
* New MAINTAINERS entry for the above.
# -----BEGIN PGP SIGNATURE-----
#
# iQGzBAABCAAdFiEE4ndqq6COJv9aG0oJUrHW6VHQzgcFAmVI81IACgkQUrHW6VHQ
# zgdzTgv+I5eV2R01YLOBBJhBjzxZ4/BUqkuUHNxHpfjuCqEIzPb7FIfoZ4ZyXZFT
# YJdSE4lPeTZLrmmi/Nt6G0rUKDvdCeIgkS2VLHFSsTV8IzcT71BTRGzV0zAjUF5v
# yDH6uzo6e9gmaziIalRjibUxSDjCQmoCifms2rS2DwazADudUp+naGfm+3uyA0gM
# raOfBfRkNZsDqhXg2ayuqPIES75xQONoON9xYPKDAthS48POEbqtWBKuFopr3kXY
# y0eph+NAw+RajCyLYKM3poIgaSu3l4WegInuKQffzqKR8dxrbwPdCmtgo6NSHx0W
# uDfl7FUBnGzrR18VU4ZfTSrF5SVscGwF9EL7uocJen15inJjl1q3G53uZgyGzHLC
# cw8fKMjucmE8njQR2qiMyX0b+T4+9nKO1rykBgTG/+c9prRUVoxYpFCF117Ei0U8
# QzLGACW1oK+LV41bekWAye7w9pShUtFaxffhPbJeZDDGh7q0x61R3Z3yKkA07p46
# /YWWFWUD
# =RAb0
# -----END PGP SIGNATURE-----
# gpg: Signature made Mon 06 Nov 2023 22:08:18 HKT
# gpg: using RSA key E2776AABA08E26FF5A1B4A0952B1D6E951D0CE07
# gpg: Good signature from "Maciej S. Szmigiero <mail@maciej.szmigiero.name>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 727A 0D4D DB9E D9F6 039B ECEF 847F 5E37 90CE 0977
# Subkey fingerprint: E277 6AAB A08E 26FF 5A1B 4A09 52B1 D6E9 51D0 CE07
* tag 'pull-hv-balloon-20231106' of https://github.com/maciejsszmigiero/qemu:
MAINTAINERS: Add an entry for Hyper-V Dynamic Memory Protocol
hw/i386/pc: Support hv-balloon
qapi: Add HV_BALLOON_STATUS_REPORT event and its QMP query command
qapi: Add query-memory-devices support to hv-balloon
Add Hyper-V Dynamic Memory Protocol driver (hv-balloon) hot-add support
Add Hyper-V Dynamic Memory Protocol driver (hv-balloon) base
Add Hyper-V Dynamic Memory Protocol definitions
memory-device: Drop size alignment check
Revert "hw/virtio/virtio-pmem: Replace impossible check by assertion"
memory-device: Support empty memory devices
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Selected bugfixes for mainline and stable, especially to the per-vCPU
local APIC vector delivery mode for event channel notifications, which
was broken in a number of ways.
The xen-block driver has been defaulting to the wrong protocol for x86
guest, and this fixes that — which is technically an incompatible change
but I'm fairly sure nobody relies on the broken behaviour (and in
production I *have* seen guests which rely on the correct behaviour,
which now matches the blkback driver in the Linux kernel).
A handful of other simple fixes for issues which came to light as new
features (qv) were being developed.
-----BEGIN PGP SIGNATURE-----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=dQ7h
-----END PGP SIGNATURE-----
Merge tag 'pull-xenfv-stable-20231106' of git://git.infradead.org/users/dwmw2/qemu into staging
Bugfixes for emulated Xen support
Selected bugfixes for mainline and stable, especially to the per-vCPU
local APIC vector delivery mode for event channel notifications, which
was broken in a number of ways.
The xen-block driver has been defaulting to the wrong protocol for x86
guest, and this fixes that — which is technically an incompatible change
but I'm fairly sure nobody relies on the broken behaviour (and in
production I *have* seen guests which rely on the correct behaviour,
which now matches the blkback driver in the Linux kernel).
A handful of other simple fixes for issues which came to light as new
features (qv) were being developed.
# -----BEGIN PGP SIGNATURE-----
#
# iQJIBAABCAAyFiEEvgfZ/VSAmrLEsP9fY3Ys2mfi81kFAmVIvv4UHGR3bXcyQGlu
# ZnJhZGVhZC5vcmcACgkQY3Ys2mfi81nFmRAAvK3VNuGDV56TJqFdtEWD+3jzSZU0
# CoL1mxggvwnlFn1SdHvbC5jl+UscknErcNbqlxMTTg9jQiiQqzFuaWujJnL0dEOY
# RJiS2scKln/1gv9NRbLE31FjPwoNz+zJI/iMvdutjT7Ll//v34jY0vd1Y5Wo53ay
# MBschuuxD1sUUTHNj5f9afrgZaetJfgBSNZraiLR5T2HEadJVJuhItdGxW1+KaPI
# zBIcflIeZmJl9b/L1a2bP3KJmRo8QzHB56X3uzwkPhYhYSU2dnCaJTLCkiNfK+Qh
# SgCBMlzsvJbIZqDA9YPOGdKK1ArfTJRmRDwAkqH0YQknQGoIkpN+7eQiiSv6PMS5
# U/93V7r6MfaftIs6YdWSnFozWeBuyKZL9H2nAXqZgL5t6uEMVR8Un/kFnGfslTFY
# 9gQ1o4IM6ECLiXhIP/sPNOprrbFb0HU7QPtEDJOxrJzBM+IfLbldRHn4p9CccqQA
# LHvJF98VhX1d0nA0iZBT3qqfKPbmUhRV9Jrm+WamqNrRXhiGdF8EidsUf8RWX+JD
# xZWJiqhTwShxdLE6TC/JgFz4cQCVHG8QiZstZUbdq59gtz9YO5PGByMgI3ds7iNQ
# lGXAPFm+1wU85W4dZOH7qyim6d9ytFm2Fm110BKM8l9B6UKEuKHpsxXMqdo65JXI
# 7uBKbVpdPKul0DY=
# =dQ7h
# -----END PGP SIGNATURE-----
# gpg: Signature made Mon 06 Nov 2023 18:25:02 HKT
# gpg: using RSA key BE07D9FD54809AB2C4B0FF5F63762CDA67E2F359
# gpg: issuer "dwmw2@infradead.org"
# gpg: Good signature from "David Woodhouse <dwmw2@infradead.org>" [unknown]
# gpg: aka "David Woodhouse <dwmw2@exim.org>" [unknown]
# gpg: aka "David Woodhouse <david@woodhou.se>" [unknown]
# gpg: aka "David Woodhouse <dwmw2@kernel.org>" [unknown]
# gpg: WARNING: The key's User ID is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: BE07 D9FD 5480 9AB2 C4B0 FF5F 6376 2CDA 67E2 F359
* tag 'pull-xenfv-stable-20231106' of git://git.infradead.org/users/dwmw2/qemu:
hw/xen: use correct default protocol for xen-block on x86
hw/xen: take iothread mutex in xen_evtchn_reset_op()
hw/xen: fix XenStore watch delivery to guest
hw/xen: don't clear map_track[] in xen_gnttab_reset()
hw/xen: select kernel mode for per-vCPU event channel upcall vector
i386/xen: fix per-vCPU upcall vector for Xen emulation
i386/xen: Don't advertise XENFEAT_supervisor_mode_kernel
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This has been replaced by a "pmu-mask" property that provides much more
flexibility.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Acked-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Message-ID: <20231031154000.18134-6-rbradford@rivosinc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Using a mask instead of the number of PMU devices supports the accurate
emulation of platforms that have a discontinuous set of PMU counters.
The "pmu-num" property now generates a warning when used by the user on
the command line.
Rather than storing the value for "pmu-num" convert it directly to the
mask if it is specified (overwriting the default "pmu-mask" value)
likewise the value is calculated from the mask if the property value is
obtained.
In the unusual situation that both "pmu-mask" and "pmu-num" are provided
then then the order on the command line determines which takes
precedence (later overwriting earlier.)
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20231031154000.18134-5-rbradford@rivosinc.com>
[Changes by AF
- Fixup ext_zihpm logic after rebase
]
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
During the FDT generation use the existing mask containing the enabled
counters rather then generating a new one. Using the existing mask will
support the use of discontinuous counters.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Reviewed-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Message-ID: <20231031154000.18134-4-rbradford@rivosinc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Check the PMU available bitmask when checking if a counter is valid
rather than comparing the index against the number of PMUs.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Reviewed-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Message-ID: <20231031154000.18134-3-rbradford@rivosinc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
More closely follow the QEMU style by returning an Error and propagating
it there is an error relating to the PMU setup.
Further simplify the function by removing the num_counters parameter as
this is available from the passed in cpu pointer.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Message-ID: <20231031154000.18134-2-rbradford@rivosinc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Set the Ibex CPU priv to 1.12.0 to ensure that smepmp/epmp is correctly
enabled.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20231102003424.2003428-3-alistair.francis@wdc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
We currently don't clear the interrupts if they are disabled. This means
that if an interrupt occurs and the guest disables interrupts the QEMU
IRQ will remain high.
This doesn't immediately affect guests, but if the
guest re-enables interrupts it's possible that we will miss an
interrupt as it always remains set.
Let's update the logic to always call qemu_set_irq() even if the
interrupts are disabled to ensure we set the level low. The level will
never be high unless interrupts are enabled, so we won't generate
interrupts when we shouldn't.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20231102003424.2003428-2-alistair.francis@wdc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Replaces TABs with spaces, making sure to have a consistent coding style
of 4 space indentations.
Signed-off-by: Max Chou <max.chou@sifive.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20231026151828.754279-15-max.chou@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Add rv_codec_vror_vi for the vector crypto instruction - vror.vi.
The rotate amount of vror.vi is defined by combining seperated bits.
Signed-off-by: Max Chou <max.chou@sifive.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20231026151828.754279-13-max.chou@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Add rv_fmt_vd_vs2_uimm format for vector crypto instructions.
Signed-off-by: Max Chou <max.chou@sifive.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20231026151828.754279-12-max.chou@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Because the vector crypto specification is ratified, so move theses
extensions from riscv_cpu_experimental_exts to riscv_cpu_extensions.
Signed-off-by: Max Chou <max.chou@sifive.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20231026151828.754279-11-max.chou@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Expose the properties of ShangMi Algorithm Suite related extensions
(Zvks, Zvksc, Zvksg).
Signed-off-by: Max Chou <max.chou@sifive.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20231026151828.754279-10-max.chou@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Vector crypto spec defines the ShangMi algorithm suite related
extensions (Zvks, Zvksc, Zvksg) combined by several vector crypto
extensions.
Signed-off-by: Max Chou <max.chou@sifive.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20231026151828.754279-9-max.chou@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Expose the properties of NIST Algorithm Suite related extensions (Zvkn,
Zvknc, Zvkng).
Signed-off-by: Max Chou <max.chou@sifive.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20231026151828.754279-8-max.chou@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Vector crypto spec defines the NIST algorithm suite related extensions
(Zvkn, Zvknc, Zvkng) combined by several vector crypto extensions.
Signed-off-by: Max Chou <max.chou@sifive.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20231026151828.754279-7-max.chou@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Max Chou <max.chou@sifive.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20231026151828.754279-6-max.chou@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
The Zvkb extension is a proper subset of the Zvbb extension and includes
following instructions:
* vandn.[vv,vx]
* vbrev8.v
* vrev8.v
* vrol.[vv,vx]
* vror.[vv,vx,vi]
Signed-off-by: Max Chou <max.chou@sifive.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20231026151828.754279-5-max.chou@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
After vector crypto spec v1.0.0-rc3 release, the Zvkb extension is
defined as a proper subset of the Zvbb extension. And both the Zvkn and
Zvks shorthand extensions replace the included Zvbb extension by Zvkb
extnesion.
Signed-off-by: Max Chou <max.chou@sifive.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20231026151828.754279-4-max.chou@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Max Chou <max.chou@sifive.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20231026151828.754279-3-max.chou@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Vector crypto spec defines the Zvkt extension that included all of the
instructions of Zvbb & Zvbc extensions and some vector instructions.
Signed-off-by: Max Chou <max.chou@sifive.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20231026151828.754279-2-max.chou@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
My Iscas mail account will be disabled soon, change to my personal
gmail account.
Signed-off-by: Weiwei Li <liwei1518@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20231030081607.115118-2-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
The CSR register mseccfg is used by multiple extensions: Smepm and Zkr.
Consider this when checking the existence of the register.
Fixes: 77442380ec ("target/riscv: rvk: add CSR support for Zkr")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20231030102105.19501-1-heinrich.schuchardt@canonical.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
These regs were added in Linux 6.6.
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20231031205150.208405-1-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Add zihpm support in the KVM driver now that QEMU supports it.
This reg was added in Linux 6.6.
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20231023153927.435083-5-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
zihpm is the Hardware Performance Counters extension described in
chapter 12 of the unprivileged spec. It describes support for 29
unprivileged performance counters, hpmcounter3-hpmcounter31.
As with zicntr, QEMU already implements zihpm before it was even an
extension. zihpm is also part of the RVA22 profile, so add it to QEMU
to complement the future profile implementation. Default it to 'true'
for all existing CPUs since it was always present in the code.
As for disabling it, there is already code in place in
target/riscv/csr.c in all predicates for these counters (ctr() and
mctr()) that disables them if cpu->cfg.pmu_num is zero. Thus, setting
cpu->cfg.pmu_num to zero if 'zihpm=false' is enough to disable the
extension.
Set cpu->pmu_avail_ctrs mask to zero as well since this is also checked
to verify if the counters exist.
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20231023153927.435083-4-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Add zicntr support in the KVM driver now that QEMU supports it.
This reg was added in Linux 6.6.
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20231023153927.435083-3-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
zicntr is the Base Counters and Timers extension described in chapter 12
of the unprivileged spec. It describes support for RDCYCLE, RDTIME and
RDINSTRET.
QEMU already implements it in TCG way before it was a discrete
extension. zicntr is part of the RVA22 profile, so let's add it to QEMU
to make the future profile implementation flag complete. Given than it
represents an already existing feature, default it to 'true' for all
CPUs.
For TCG, we need a way to disable zicntr if the user wants to. This is
done by restricting access to the CYCLE, TIME, and INSTRET counters via
the 'ctr()' predicate when we're about to access them.
Disabling zicntr happens via the command line or if its dependency,
zicsr, happens to be disabled. We'll check for zicsr during realize()
and, in case it's absent, disable zicntr. However, if the user was
explicit about having zicntr support, error out instead of disabling it.
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20231023153927.435083-2-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
