in which individual CPUs are reset. It will ease the introduction of
future change reseting the interrupt presenter from the CPU reset
handler.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Message-Id: <20191022163812.330-4-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Since vCPUs aren't plugged into a bus, we manually register a reset
handler for each vCPU. We also call this handler at realize time
to ensure hot plugged vCPUs are reset before being exposed to the
guest. This results in vCPUs being reset twice at machine reset.
It doesn't break anything but it is slightly suboptimal and above
all confusing.
The hotplug path in device_set_realized() already knows how to reset
a hotplugged device if the device reset handler is present. Implement
one for sPAPR CPU cores that resets all vCPUs under a core.
While here rename spapr_cpu_reset() to spapr_reset_vcpu() for
consistency with spapr_realize_vcpu() and spapr_unrealize_vcpu().
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
[clg: add documentation on the reset helper usage ]
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20191022163812.330-3-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This change prepares ground for future changes which will reset the
interrupt presenter in the reset handler of the sPAPR and PowerNV
cores.
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20191022163812.330-2-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
We must not call spapr_drc_detach() on a detached DRC otherwise bad things
can happen, ie. QEMU hangs or crashes. This is easily demonstrated with
a CPU hotplug/unplug loop using QMP.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <157185826035.3073024.1664101000438499392.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This aims v4.2 and fixes:
1. full FDT rendering;
2. gcc9 -Waddress-of-packed-member.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
For the benefit of peripheral device allocation, the number of available
irqs really wants to be the same on a given machine type version,
regardless of what irq backends we are using. That's the case now, but
only because we make sure the different SpaprIrq instances have the same
value except for the special legacy one.
Since this really only depends on machine type version, move the value to
SpaprMachineClass instead of SpaprIrq. This also puts the code to set it
to the lower value on old machine types right next to setting
legacy_irq_allocation, which needs to go hand in hand.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
The nr_msis value we use here has to line up with whether we're using
legacy or modern irq allocation. Therefore it's safer to derive it based
on legacy_irq_allocation rather than having SpaprIrq contain a canned
value.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
The remaining logic in the post_load hook really belongs to the interrupt
controller backends, and just needs to be called on the active controller
(after the active controller is set to the right thing based on the
incoming migration in the generic spapr_irq_post_load() logic).
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
It turns out that all the logic in the SpaprIrq::reset hooks (and some in
the SpaprIrq::post_load hooks) isn't really related to resetting the irq
backend (that's handled by the backends' own reset routines). Rather its
about getting the backend ready to be the active interrupt controller or
stopping being the active interrupt controller - reset (and post_load) is
just the only time that changes at present.
To make this flow clearer, move the logic into the explicit backend
activate and deactivate hooks.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
This hook is a bit odd. The only caller is spapr_irq_init_kvm(), but
it explicitly takes an SpaprIrq *, so it's never really called through the
current SpaprIrq. Essentially this is just a way of passing through a
function pointer so that spapr_irq_init_kvm() can handle some
configuration and error handling logic without duplicating it between the
xics and xive reset paths.
So, make it just take that function pointer. Because of earlier reworks
to the KVM connect/disconnect code in the xics and xive backends we can
also eliminate some wrapper functions and streamline error handling a bit.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Both XICS and XIVE have routines to connect and disconnect KVM with
similar but not identical signatures. This adjusts them to match
exactly, which will be useful for further cleanups later.
While we're there, we add an explicit return value to the connect path
to streamline error reporting in the callers. We remove error
reporting the disconnect path. In the XICS case this wasn't used at
all. In the XIVE case the only error case was if the KVM device was
set up, but KVM didn't have the capability to do so which is pretty
obviously impossible.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
This method depends only on the active irq controller. Now that we've
formalized the notion of active controller we can dispatch directly
through that, rather than dispatching via SpaprIrq with the dual
version having to do a second conditional dispatch.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
This method depends only on the active irq controller. Now that we've
formalized the notion of active controller we can dispatch directly
through that, rather than dispatching via SpaprIrq with the dual
version having to do a second conditional dispatch.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
This method depends only on the active irq controller. Now that we've
formalized the notion of active controller we can dispatch directly through
that, rather than dispatching via SpaprIrq with the dual version having
to do a second conditional dispatch.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
spapr now has the mechanism of constructing both XICS and XIVE instances of
the SpaprInterruptController interface. However, only one of the interrupt
controllers will actually be active at any given time, depending on feature
negotiation with the guest. This is handled in the current code via
spapr_irq_current() which checks the OV5 vector from feature negotiation to
determine the current backend.
Determining the active controller at the point we need it like this
can be pretty confusing, because it makes it very non obvious at what
points the active controller can change. This can make it difficult
to reason about the code and where a change of active controller could
appear in sequence with other events.
Make this mechanism more explicit by adding an 'active_intc' pointer
and an explicit spapr_irq_update_active_intc() function to update it
from the CAS state. We also add hooks on the intc backend which will
get called when it is activated or deactivated.
For now we just introduce the switch and hooks, later patches will
actually start using them.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
These methods, like cpu_intc_create, really belong to the interrupt
controller, but need to be called on all possible intcs.
Like cpu_intc_create, therefore, make them methods on the intc and
always call it for all existing intcs.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
This method essentially represents code which belongs to the interrupt
controller, but needs to be called on all possible intcs, rather than
just the currently active one. The "dual" version therefore calls
into the xics and xive versions confusingly.
Handle this more directly, by making it instead a method on the intc
backend, and always calling it on every backend that exists.
While we're there, streamline the error reporting a bit.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
The SpaprIrq structure is used to represent ths spapr machine's irq
backend. Except that it kind of conflates two concepts: one is the
backend proper - a specific interrupt controller that we might or
might not be using, the other is the irq configuration which covers
the layout of irq space and which interrupt controllers are allowed.
This leads to some pretty confusing code paths for the "dual"
configuration where its hooks redirect to other SpaprIrq structures
depending on the currently active irq controller.
To clean this up, we start by introducing a new
SpaprInterruptController QOM interface to represent strictly an
interrupt controller backend, not counting anything configuration
related. We implement this interface in the XICs and XIVE interrupt
controllers, and in future we'll move relevant methods from SpaprIrq
into it.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Support for setting VSMT is available in KVM since linux-4.13. Most distros
that support KVM on POWER already have it. It thus seem reasonable enough
to have the default machine to set VSMT to smp_threads.
This brings contiguous VCPU ids and thus brings their upper bound down to
the machine's max_cpus. This is especially useful for XIVE KVM devices,
which may thus allocate only one VP descriptor per VCPU.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <157010411885.246126.12610015369068227139.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Include the XIVE_TRIGGER_PQ bit in the trigger data which is how
hardware signals to the IC that the PQ bits of the interrupt source
have been checked.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20191007084102.29776-3-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The trigger data is used for both triggers of a HW source interrupts,
PHB, PSI, and triggers for rerouting interrupts between interrupt
controllers.
When an interrupt is rerouted, the trigger data follows an "END
trigger" format. In that case, the remote IC needs EAS containing an
END index to perform a lookup of an END.
An END trigger, bit0 of word0 set to '1', is defined as :
|0123|4567|0123|4567|0123|4567|0123|4567|
W0 E=1 |1P--|BLOC| END IDX |
W1 E=1 |M | END DATA |
An EAS is defined as :
|0123|4567|0123|4567|0123|4567|0123|4567|
W0 |V---|BLOC| END IDX |
W1 |M | END DATA |
The END trigger adds an extra 'PQ' bit, bit1 of word0 set to '1',
signaling that the PQ bits have been checked. That bit is unused in
the initial EAS definition.
When a HW device performs the trigger, the trigger data follows an
"EAS trigger" format because the trigger data in that case contains an
EAS index which the IC needs to look for.
An EAS trigger, bit0 of word0 set to '0', is defined as :
|0123|4567|0123|4567|0123|4567|0123|4567|
W0 E=0 |0P--|---- ---- ---- ---- ---- ---- ----|
W1 E=0 |BLOC| EAS INDEX |
There is also a 'PQ' bit, bit1 of word0 to '1', signaling that the
PQ bits have been checked.
Introduce these new trigger bits and rename the XIVE_SRCNO macros in
XIVE_EAS to reflect better the nature of the data.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20191007084102.29776-2-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
In previous implementation, invocation of TCG shift function could request
shift of TCG variable by 64 bits when variable 'sh' is 0, which is not
supported in TCG (values can be shifted by 0 to 63 bits). This patch fixes
this by using two separate invocation of TCG shift functions, with maximum
shift amount of 32.
Name of variable 'shifted' is changed to 'carry' so variable naming
is similar to old helper implementation.
Variables 'avrA' and 'avrB' are replaced with variable 'avr'.
Fixes: 4e6d0920e7
Reported-by: "Paul A. Clark" <pc@us.ibm.com>
Reported-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Suggested-by: Aleksandar Markovic <aleksandar.markovic@rt-rk.com>
Signed-off-by: Stefan Brankovic <stefan.brankovic@rt-rk.com>
Message-Id: <1570196639-7025-2-git-send-email-stefan.brankovic@rt-rk.com>
Tested-by: Paul A. Clarke <pc@us.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Some device types of the XICS model are exposed to the QEMU command
line:
$ ppc64-softmmu/qemu-system-ppc64 -device help | grep ic[sp]
name "icp"
name "ics"
name "ics-spapr"
name "pnv-icp", desc "PowerNV ICP"
These are internal devices that shouldn't be instantiable by the
user. By the way, they can't be because their respective realize
functions expect link properties that can't be set from the command
line:
qemu-system-ppc64: -device icp: required link 'xics' not found:
Property '.xics' not found
qemu-system-ppc64: -device ics: required link 'xics' not found:
Property '.xics' not found
qemu-system-ppc64: -device ics-spapr: required link 'xics' not found:
Property '.xics' not found
qemu-system-ppc64: -device pnv-icp: required link 'xics' not found:
Property '.xics' not found
Hide them by setting dc->user_creatable to false in the base class
"icp" and "ics" init functions.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <157017826724.337875.14822177178282524024.stgit@bahia.lan>
Message-Id: <157045578962.865784.8551555523533955113.stgit@bahia.lan>
[dwg: Folded reason comment into base patch]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Some device types of the XIVE model are exposed to the QEMU command
line:
$ ppc64-softmmu/qemu-system-ppc64 -device help | grep xive
name "xive-end-source", desc "XIVE END Source"
name "xive-source", desc "XIVE Interrupt Source"
name "xive-tctx", desc "XIVE Interrupt Thread Context"
These are internal devices that shouldn't be instantiable by the
user. By the way, they can't be because their respective realize
functions expect link properties that can't be set from the command
line:
qemu-system-ppc64: -device xive-source: required link 'xive' not found:
Property '.xive' not found
qemu-system-ppc64: -device xive-end-source: required link 'xive' not found:
Property '.xive' not found
qemu-system-ppc64: -device xive-tctx: required link 'cpu' not found:
Property '.cpu' not found
Hide them by setting dc->user_creatable to false in their respective
class init functions.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <157017473006.331610.2983143972519884544.stgit@bahia.lan>
Message-Id: <157045578401.865784.6058183726552779559.stgit@bahia.lan>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
[dwg: Folded comment update into base patch]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Add test, which starts backup to nbd target and restarts nbd server
during backup.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20191009084158.15614-4-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
* Various ptimer device conversions to new transaction API
* Add a dummy Samsung SDHCI controller model to exynos4 boards
* Minor refactorings of RAM creation for some arm boards
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20191022-2' into staging
* Fix sign-extension for SMLAL* instructions
* Various ptimer device conversions to new transaction API
* Add a dummy Samsung SDHCI controller model to exynos4 boards
* Minor refactorings of RAM creation for some arm boards
# gpg: Signature made Tue 22 Oct 2019 17:44:26 BST
# gpg: using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg: issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg: aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE
* remotes/pmaydell/tags/pull-target-arm-20191022-2:
hw/arm/digic4: Inline digic4_board_setup_ram() function
hw/arm/omap1: Create the RAM in the board
hw/arm/omap2: Create the RAM in the board
hw/arm/collie: Create the RAM in the board
hw/arm/mps2: Use the IEC binary prefix definitions
hw/arm/xilinx_zynq: Use the IEC binary prefix definitions
hw/arm/exynos4210: Use the Samsung s3c SDHCI controller
hw/sd/sdhci: Add dummy Samsung SDHCI controller
hw/sd/sdhci: Add a comment to distinct the i.MX eSDHC functions
hw/m68k/mcf5208.c: Switch to transaction-based ptimer API
hw/watchdog/etraxfs_timer.c: Switch to transaction-based ptimer API
hw/timer/altera_timer.c: Switch to transaction-based ptimer API
hw/timer/lm32_timer: Switch to transaction-based ptimer API
hw/timer/sh_timer: Switch to transaction-based ptimer API
hw/timer/puv3_ost.c: Switch to transaction-based ptimer API
hw/timer/arm_mptimer.c: Undo accidental rename of arm_mptimer_init()
hw/timer/exynos4210_mct: Initialize ptimer before starting it
target/arm: Fix sign-extension for SMLAL*
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Having the RAM creation code in a separate function is not
very helpful. Move this code directly inside the board_init()
function, this will later allow the board to have the QOM
ownership of the RAM.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20191021190653.9511-7-philmd@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The SDRAM is incorrectly created in the OMAP310 SoC.
Move its creation in the board code, this will later allow the
board to have the QOM ownership of the RAM.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20191021190653.9511-6-philmd@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The SDRAM is incorrectly created in the OMAP2420 SoC.
Move its creation in the board code, this will later allow the
board to have the QOM ownership of the RAM.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20191021190653.9511-5-philmd@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The SDRAM is incorrectly created in the SA1110 SoC.
Move its creation in the board code, this will later allow the
board to have the QOM ownership of the RAM.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20191021190653.9511-4-philmd@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
IEC binary prefixes ease code review: the unit is explicit.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20191021190653.9511-3-philmd@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
IEC binary prefixes ease code review: the unit is explicit.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20191021190653.9511-2-philmd@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The Exynos SoC has specific SDHCI registers. Use the s3c SDHCI
model which handle these specific registers.
This silents the following "SDHC ... not implemented" warnings so
we can focus on the important registers missing:
$ qemu-system-arm ... -d unimp \
-append "... root=/dev/mmcblk0 rootfstype=ext4 rw rootwait" \
-drive file=linux-build-test/rootfs/arm/rootfs-armv5.ext2,if=sd,format=raw
[...]
[ 25.744858] sdhci: Secure Digital Host Controller Interface driver
[ 25.745862] sdhci: Copyright(c) Pierre Ossman
[ 25.783188] s3c-sdhci 12530000.sdhci: clock source 2: mmc_busclk.2 (12000000 Hz)
SDHC rd_4b @0x80 not implemented
SDHC wr_4b @0x80 <- 0x00000020 not implemented
SDHC wr_4b @0x8c <- 0x00030000 not implemented
SDHC rd_4b @0x80 not implemented
SDHC wr_4b @0x80 <- 0xc0004100 not implemented
SDHC wr_4b @0x84 <- 0x80808080 not implemented
[ 26.013318] mmc0: SDHCI controller on samsung-hsmmc [12530000.sdhci] using ADMA
[ 26.032318] Synopsys Designware Multimedia Card Interface Driver
[ 42.024885] Waiting for root device /dev/mmcblk0...
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Message-id: 20191005154748.21718-5-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This file keeps the various QDev blocks separated by comments.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Message-id: 20191005154748.21718-3-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Switch the mcf5208 code away from bottom-half based ptimers to
the new transaction-based ptimer API. This just requires adding
begin/commit calls around the various places that modify the ptimer
state, and using the new ptimer_init() function to create the timer.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Thomas Huth <huth@tuxfamily.org>
Message-id: 20191017132905.5604-9-peter.maydell@linaro.org
Switch the etraxfs_timer code away from bottom-half based ptimers to
the new transaction-based ptimer API. This just requires adding
begin/commit calls around the various places that modify the ptimer
state, and using the new ptimer_init() function to create the timer.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20191017132905.5604-7-peter.maydell@linaro.org
Switch the altera_timer code away from bottom-half based ptimers to
the new transaction-based ptimer API. This just requires adding
begin/commit calls around the various places that modify the ptimer
state, and using the new ptimer_init() function to create the timer.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20191017132905.5604-6-peter.maydell@linaro.org
Switch the lm32_timer code away from bottom-half based ptimers to the
new transaction-based ptimer API. This just requires adding
begin/commit calls around the various places that modify the ptimer
state, and using the new ptimer_init() function to create the ytimer.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20191017132905.5604-4-peter.maydell@linaro.org
Switch the sh_timer code away from bottom-half based ptimers to the
new transaction-based ptimer API. This just requires adding
begin/commit calls around the various places that modify the ptimer
state, and using the new ptimer_init() function to create the timer.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20191017132905.5604-3-peter.maydell@linaro.org
Switch the puv3_ost code away from bottom-half based ptimers to the
new transaction-based ptimer API. This just requires adding
begin/commit calls around the various places that modify the ptimer
state, and using the new ptimer_init() function to create the timer.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20191017132905.5604-2-peter.maydell@linaro.org
In commit b01422622b we did an automated rename of the ptimer_init()
function to ptimer_init_with_bh(). Unfortunately this caught the
unrelated arm_mptimer_init() function. Undo that accidental
renaming.
Fixes: b01422622b
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20191017133331.5901-1-peter.maydell@linaro.org
When booting a recent Linux kernel, the qemu message "Timer with delta
zero, disabling" is seen, apparently because a ptimer is started before
being initialized. Fix the problem by initializing the offending ptimer
before starting it.
The bug is effectively harmless in the old QEMUBH setup
because the sequence of events is:
* the delta zero means the timer expires immediately
* ptimer_reload() arranges for exynos4210_gfrc_event() to be called
* ptimer_reload() notices the zero delta and disables the timer
* later, the QEMUBH runs, and exynos4210_gfrc_event() correctly
configures the timer and restarts it
In the new transaction based API the bug is still harmless,
but differences of when the callback function runs mean the
message is not printed any more:
* ptimer_run() does nothing as it's inside a transaction block
* ptimer_transaction_commit() sees it has work to do and
calls ptimer_reload()
* the zero delta means the timer expires immediately
* ptimer_reload() calls exynos4210_gfrc_event() directly
* exynos4210_gfrc_event() configures the timer
* the delta is no longer zero so ptimer_reload() doesn't complain
(the zero-delta test is after the trigger-callback in
the ptimer_reload() function)
Regardless, the behaviour here was not intentional, and we should
just program the ptimer correctly to start with.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20191018143149.9216-1-peter.maydell@linaro.org
[PMM: Expansion/clarification of the commit message:
the message is about a zero delta, not a zero period;
added detail to the commit message of the analysis of what
is happening and why the kernel boots even with the message;
added note that the message goes away with the new ptimer API]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The 32-bit product should be sign-extended, not zero-extended.
Fixes: ea96b37464
Reported-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Message-id: 20190912183058.17947-1-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Implement reconnect. To achieve this:
1. add new modes:
connecting-wait: means, that reconnecting is in progress, and there
were small number of reconnect attempts, so all requests are
waiting for the connection.
connecting-nowait: reconnecting is in progress, there were a lot of
attempts of reconnect, all requests will return errors.
two old modes are used too:
connected: normal state
quit: exiting after fatal error or on close
Possible transitions are:
* -> quit
connecting-* -> connected
connecting-wait -> connecting-nowait (transition is done after
reconnect-delay seconds in connecting-wait mode)
connected -> connecting-wait
2. Implement reconnect in connection_co. So, in connecting-* mode,
connection_co, tries to reconnect unlimited times.
3. Retry nbd queries on channel error, if we are in connecting-wait
state.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20191009084158.15614-3-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Introduce a function to gracefully wake a coroutine sleeping in
qemu_co_sleep_ns().
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20191009084158.15614-2-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
'savevm' was buggy as it considered all monitor-owned block device
nodes for snapshot. With the introduction of -blockdev, the common
usage made all nodes including protocol and backing file nodes be
monitor-owned and thus considered for snapshot.
This is a problem since the 'file' protocol nodes can't have internal
snapshots and it does not make sense to take snapshot of nodes
representing backing files.
This was fixed by commit 05f4aced65. Clients need to be able to
detect whether this fix is present.
Since savevm does not have an QMP alternative, add the feature for the
'human-monitor-command' backdoor which is used to call this command in
modern use.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20191018081454.21369-6-armbru@redhat.com>
