um: virt-pci: Refactor virtio_pcidev into its own module

Decouple virt-pci and virtio_pcidev, refactoring virtio_pcidev into
its own module. Define a set of APIs for virt-pci. This allows for
future

um: virt-pci: Refactor virtio_pcidev into its own module

Decouple virt-pci and virtio_pcidev, refactoring virtio_pcidev into
its own module. Define a set of APIs for virt-pci. This allows for
future addition of more PCI emulation implementations.

Signed-off-by: Tiwei Bie <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Johannes Berg <[email protected]>

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um: Remove obsolete pcap driver

Remove the pcap driver in UML. It is obsolete. It does not build on
recent systems due to changes in libpcap and its dependencies.

The vector driver's raw transport

um: Remove obsolete pcap driver

Remove the pcap driver in UML. It is obsolete. It does not build on
recent systems due to changes in libpcap and its dependencies.

The vector driver's raw transport in UML provides identical
functionality.

Signed-off-by: Anton Ivanov <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Johannes Berg <[email protected]>

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um: Fix hostaudio build errors

Use "select" to ensure that the required kconfig symbols are set
as expected.
Drop HOSTAUDIO since it is now equivalent to UML_SOUND.

Set CONFIG_SOUND=m in ARCH=um de

um: Fix hostaudio build errors

Use "select" to ensure that the required kconfig symbols are set
as expected.
Drop HOSTAUDIO since it is now equivalent to UML_SOUND.

Set CONFIG_SOUND=m in ARCH=um defconfig files to maintain the
status quo of the default configs.

Allow SOUND with UML regardless of HAS_IOMEM. Otherwise there is a
kconfig warning for unmet dependencies. (This was not an issue when
SOUND was defined in arch/um/drivers/Kconfig. I have done 50 randconfig
builds and didn't find any issues.)

This fixes build errors when CONFIG_SOUND is not set:

ld: arch/um/drivers/hostaudio_kern.o: in function `hostaudio_cleanup_module':
hostaudio_kern.c:(.exit.text+0xa): undefined reference to `unregister_sound_mixer'
ld: hostaudio_kern.c:(.exit.text+0x15): undefined reference to `unregister_sound_dsp'
ld: arch/um/drivers/hostaudio_kern.o: in function `hostaudio_init_module':
hostaudio_kern.c:(.init.text+0x19): undefined reference to `register_sound_dsp'
ld: hostaudio_kern.c:(.init.text+0x31): undefined reference to `register_sound_mixer'
ld: hostaudio_kern.c:(.init.text+0x49): undefined reference to `unregister_sound_dsp'

and this kconfig warning:
WARNING: unmet direct dependencies detected for SOUND

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Fixes: d886e87cb82b ("sound: make OSS sound core optional")
Signed-off-by: Randy Dunlap <[email protected]>
Reported-by: kernel test robot <[email protected]>
Closes: lore.kernel.org/r/[email protected]
Cc: Richard Weinberger <[email protected]>
Cc: Anton Ivanov <[email protected]>
Cc: Johannes Berg <[email protected]>
Cc: [email protected]
Cc: Tejun Heo <[email protected]>
Cc: Takashi Iwai <[email protected]>
Cc: Jaroslav Kysela <[email protected]>
Cc: Masahiro Yamada <[email protected]>
Cc: Nathan Chancellor <[email protected]>
Cc: Nick Desaulniers <[email protected]>
Cc: Nicolas Schier <[email protected]>
Cc: [email protected]
Cc: [email protected]
Reviewed-by: Masahiro Yamada <[email protected]>
Signed-off-by: Richard Weinberger <[email protected]>

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um: Prevent building modules incompatible with MODVERSIONS

The manual ld invocation in arch/um/drivers doesn't play nicely with
genksyms. Given the problematic modules are deprecated anyway, just
pr

um: Prevent building modules incompatible with MODVERSIONS

The manual ld invocation in arch/um/drivers doesn't play nicely with
genksyms. Given the problematic modules are deprecated anyway, just
prevent building them when using MODVERSIONS.

e.g.
MODPOST Module.symvers
arch/um/drivers/.pcap.o.cmd: No such file or directory

Signed-off-by: Peter Foley <[email protected]>
Signed-off-by: Richard Weinberger <[email protected]>

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PCI/MSI: Get rid of PCI_MSI_IRQ_DOMAIN

What a zoo:

PCI_MSI
select GENERIC_MSI_IRQ

PCI_MSI_IRQ_DOMAIN
def_bool y
depends on PCI_MSI
select GENERIC_MSI_IRQ_DOMAIN

Ergo PCI_MSI en

PCI/MSI: Get rid of PCI_MSI_IRQ_DOMAIN

What a zoo:

PCI_MSI
select GENERIC_MSI_IRQ

PCI_MSI_IRQ_DOMAIN
def_bool y
depends on PCI_MSI
select GENERIC_MSI_IRQ_DOMAIN

Ergo PCI_MSI enables PCI_MSI_IRQ_DOMAIN which in turn selects
GENERIC_MSI_IRQ_DOMAIN. So all the dependencies on PCI_MSI_IRQ_DOMAIN are
just an indirection to PCI_MSI.

Match the reality and just admit that PCI_MSI requires
GENERIC_MSI_IRQ_DOMAIN.

Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Jason Gunthorpe <[email protected]>
Acked-by: Bjorn Helgaas <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

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um/drivers: Kconfig: Fix indentation

The convention for indentation seems to be a single tab. Help text is
further indented by an additional two whitespaces. Fix the lines that
violate these rules.

um/drivers: Kconfig: Fix indentation

The convention for indentation seems to be a single tab. Help text is
further indented by an additional two whitespaces. Fix the lines that
violate these rules.

Signed-off-by: Juerg Haefliger <[email protected]>
Signed-off-by: Richard Weinberger <[email protected]>

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um: daemon: Make default socket configurable

Even if daemon network is deprecated, some configurations may
still use it (e.g. Debian), and not want to default to the
/tmp/uml.ctl socket location. Al

um: daemon: Make default socket configurable

Even if daemon network is deprecated, some configurations may
still use it (e.g. Debian), and not want to default to the
/tmp/uml.ctl socket location. Allow configuring the default
socket location.

Signed-off-by: Johannes Berg <[email protected]>
Acked-By: Anton Ivanov <[email protected]>
Tested-by: Ritesh Raj Sarraf <[email protected]>
Signed-off-by: Richard Weinberger <[email protected]>

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um: xterm: Make default terminal emulator configurable

Make the default terminal emulator configurable so e.g.
Debian can set it to x-terminal-emulator instead of the
current default of xterm.

Sign

um: xterm: Make default terminal emulator configurable

Make the default terminal emulator configurable so e.g.
Debian can set it to x-terminal-emulator instead of the
current default of xterm.

Signed-off-by: Johannes Berg <[email protected]>
Acked-By: Anton Ivanov <[email protected]>
Tested-by: Ritesh Raj Sarraf <[email protected]>
Signed-off-by: Richard Weinberger <[email protected]>

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um: add PCI over virtio emulation driver

To support testing of PCI/PCIe drivers in UML, add a PCI bus
support driver. This driver uses virtio, which in UML is really
just vhost-user, to talk to devi

um: add PCI over virtio emulation driver

To support testing of PCI/PCIe drivers in UML, add a PCI bus
support driver. This driver uses virtio, which in UML is really
just vhost-user, to talk to devices, and adds the devices to
the virtual PCI bus in the system.

Since virtio already allows DMA/bus mastering this really isn't
all that hard, of course we need the logic_iomem infrastructure
that was added by a previous patch.

The protocol to talk to the device is has a few fairly simple
messages for reading to/writing from config and IO spaces, and
messages for the device to send the various interrupts (INT#,
MSI/MSI-X and while suspended PME#).

Note that currently no offical virtio device ID is assigned for
this protocol, as a consequence this patch requires defining it
in the Kconfig, with a default that makes the driver refuse to
work at all.

Finally, in order to add support for MSI/MSI-X interrupts, some
small changes are needed in the UML IRQ code, it needs to have
more interrupts, changing NR_IRQS from 64 to 128 if this driver
is enabled, but not actually use them for anything so that the
generic IRQ domain/MSI infrastructure can allocate IRQ numbers.

Signed-off-by: Johannes Berg <[email protected]>
Signed-off-by: Richard Weinberger <[email protected]>

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um: add a pseudo RTC

Add a pseudo RTC that simply is able to send an alarm signal
waking up the system at a given time in the future.

Since apparently timerfd_create() FDs don't support SIGIO, we
u

um: add a pseudo RTC

Add a pseudo RTC that simply is able to send an alarm signal
waking up the system at a given time in the future.

Since apparently timerfd_create() FDs don't support SIGIO, we
use the sigio-creating helper thread, which just learned to do
suspend/resume properly in the previous patch.

For time-travel mode, OTOH, just add an event at the specified
time in the future, and that's already sufficient to wake up
the system at that point in time since suspend will just be in
an "endless wait".

For s2idle support also call pm_system_wakeup().

Signed-off-by: Johannes Berg <[email protected]>
Signed-off-by: Richard Weinberger <[email protected]>

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um: fix spelling mistake in Kconfig "privleges" -> "privileges"

There is a spelling mistake in the Kconfig help text. Fix it.

Signed-off-by: Colin Ian King <[email protected]>
Signed-off-by:

um: fix spelling mistake in Kconfig "privleges" -> "privileges"

There is a spelling mistake in the Kconfig help text. Fix it.

Signed-off-by: Colin Ian King <[email protected]>
Signed-off-by: Richard Weinberger <[email protected]>

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um: Allow static linking for non-glibc implementations

It is possible to produce a statically linked UML binary with UML_NET_VECTOR,
UML_NET_VDE and UML_NET_PCAP options enabled using alternative li

um: Allow static linking for non-glibc implementations

It is possible to produce a statically linked UML binary with UML_NET_VECTOR,
UML_NET_VDE and UML_NET_PCAP options enabled using alternative libc
implementations, which do not rely on NSS, such as musl.

Allow static linking in this case.

Signed-off-by: Ignat Korchagin <[email protected]>
Reviewed-by: Brendan Higgins <[email protected]>
Tested-by: Brendan Higgins <[email protected]>
Signed-off-by: Richard Weinberger <[email protected]>

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um: Make CONFIG_STATIC_LINK actually static

Currently, CONFIG_STATIC_LINK can be enabled with options which cannot
be statically linked, namely UML_NET_VECTOR, UML_NET_VDE, and
UML_NET_PCAP; this is

um: Make CONFIG_STATIC_LINK actually static

Currently, CONFIG_STATIC_LINK can be enabled with options which cannot
be statically linked, namely UML_NET_VECTOR, UML_NET_VDE, and
UML_NET_PCAP; this is because glibc tries to load NSS which does not
support being statically linked. So make CONFIG_STATIC_LINK depend on
!UML_NET_VECTOR && !UML_NET_VDE && !UML_NET_PCAP.

Link: https://lore.kernel.org/lkml/[email protected]/#t
Signed-off-by: Brendan Higgins <[email protected]>
Acked-By: Anton Ivanov <[email protected]>
Signed-off-by: Richard Weinberger <[email protected]>

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um: Mark non-vector net transports as obsolete

UML_NET_VECTOR now supports filters compiled with pcap outside of UML;
it also supports: EoGRE, EoL2TPv3, RAW (+/- BPF), TAP and BESS.

While vector dr

um: Mark non-vector net transports as obsolete

UML_NET_VECTOR now supports filters compiled with pcap outside of UML;
it also supports: EoGRE, EoL2TPv3, RAW (+/- BPF), TAP and BESS.

While vector drivers are not 1:1 replacements for the existing drivers,
you can achieve the same topologies and the same connectivity at much
higher performance (2.5 to 9 Gbit on mid-range Ryzen desktop) - the old
drivers test out in the 500Mbit range on the same hardware.

For all these reasons, the non-vector based transports are now
unnecessary, and some, most notably pcap and vde are maintenance
burdens. Thus, it makes sense to at least start thinking about removing
the non-vector transports, so for now, mark them as obsolete.

Link: https://lore.kernel.org/lkml/[email protected]/T/#u
Suggested-by: Anton Ivanov <[email protected]>
Signed-off-by: Brendan Higgins <[email protected]>
Signed-off-by: Richard Weinberger <[email protected]>

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um: virtio_uml: Disallow modular build

This driver *can* be a module, but then its parameters (socket path)
are untrusted data from inside the VM, and that isn't allowed. Allow
the code to only be b

um: virtio_uml: Disallow modular build

This driver *can* be a module, but then its parameters (socket path)
are untrusted data from inside the VM, and that isn't allowed. Allow
the code to only be built-in to avoid that.

Fixes: 5d38f324993f ("um: drivers: Add virtio vhost-user driver")
Signed-off-by: Johannes Berg <[email protected]>
Acked-by: Anton Ivanov <[email protected]>
Signed-off-by: Richard Weinberger <[email protected]>

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um: drivers: Add virtio vhost-user driver

This module allows virtio devices to be used over a vhost-user socket.

Signed-off-by: Erel Geron <[email protected]>
Signed-off-by: Johannes Berg <joha

um: drivers: Add virtio vhost-user driver

This module allows virtio devices to be used over a vhost-user socket.

Signed-off-by: Erel Geron <[email protected]>
Signed-off-by: Johannes Berg <[email protected]>
Signed-off-by: Richard Weinberger <[email protected]>

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arch: um: drivers: Kconfig: pedantic formatting

Formatting of Kconfig files doesn't look so pretty, so just
take damp cloth and clean it up. Just indention changes.

Signed-off-by: Enrico Weigelt, m

arch: um: drivers: Kconfig: pedantic formatting

Formatting of Kconfig files doesn't look so pretty, so just
take damp cloth and clean it up. Just indention changes.

Signed-off-by: Enrico Weigelt, metux IT consult <[email protected]>
Signed-off-by: Richard Weinberger <[email protected]>

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um: create a proper drivers Kconfig

Merge arch/um/Kconfig.char and arch/um/Kconfig.net into a new
arch/um/drivers/Kconfig. This fits the way Kconfig files are placed
elsewhere in the kernel tree.

um: create a proper drivers Kconfig

Merge arch/um/Kconfig.char and arch/um/Kconfig.net into a new
arch/um/drivers/Kconfig. This fits the way Kconfig files are placed
elsewhere in the kernel tree.

Signed-off-by: Christoph Hellwig <[email protected]>
Acked-by: Richard Weinberger <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>

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