Exit to cpu loop so we reevaluate cpu_arm_hw_interrupts.
Tested-by: Emilio G. Cota <cota@braap.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Exit to cpu loop so we reevaluate cpu_s390x_hw_interrupts.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
We can call tb_htable_lookup even when the tb_jmp_cache is completely
empty. Therefore, un-nest most of the code dependent on tb != NULL
from the read from the cache.
This improves the hit rate of lookup_tb_ptr; for instance, when booting
and immediately shutting down debian-arm, the hit rate improves from
93.2% to 99.4%.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
The new placement of the TB means that we can use one insn
to load the goto_tb destination directly from the TB.
Signed-off-by: Richard Henderson <rth@twiddle.net>
The new placement of the TB means that we can use one insn
to load the return value for exit_tb returning the TB pointer.
Tested-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
We are partially initializing tb in tb_alloc. Instead, fully
initialize it in tb_gen_code, which is tb_alloc's only caller.
This saves an unnecessary write to tb->cflags.
Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <1497038122-26364-1-git-send-email-cota@braap.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Allocating an arbitrarily-sized array of tbs results in either
(a) a lot of memory wasted or (b) unnecessary flushes of the code
cache when we run out of TB structs in the array.
An obvious solution would be to just malloc a TB struct when needed,
and keep the TB array as an array of pointers (recall that tb_find_pc()
needs the TB array to run in O(log n)).
Perhaps a better solution, which is implemented in this patch, is to
allocate TB's right before the translated code they describe. This
results in some memory waste due to padding to have code and TBs in
separate cache lines--for instance, I measured 4.7% of padding in the
used portion of code_gen_buffer when booting aarch64 Linux on a
host with 64-byte cache lines. However, it can allow for optimizations
in some host architectures, since TCG backends could safely assume that
the TB and the corresponding translated code are very close to each
other in memory. See this message by rth for a detailed explanation:
https://lists.gnu.org/archive/html/qemu-devel/2017-03/msg05172.html
Subject: Re: GSoC 2017 Proposal: TCG performance enhancements
Message-ID: <1e67644b-4b30-887e-d329-1848e94c9484@twiddle.net>
Suggested-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <1496790745-314-3-git-send-email-cota@braap.org>
[rth: Simplify the arithmetic in tcg_tb_alloc]
Signed-off-by: Richard Henderson <rth@twiddle.net>
Add helpers to gather cache info from the host at init-time.
For now, only export the host's I/D cache line sizes, which we
will use to improve cache locality to avoid false sharing.
Suggested-by: Richard Henderson <rth@twiddle.net>
Suggested-by: Geert Martin Ijewski <gm.ijewski@web.de>
Tested-by: Geert Martin Ijewski <gm.ijewski@web.de>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <1496794624-4083-1-git-send-email-cota@braap.org>
[rth: Move all implementations from tcg/ppc/]
Signed-off-by: Richard Henderson <rth@twiddle.net>
Previously, dst side will immediately try to lock the write byte upon
receiving QEMU_VM_EOF, but at src side, bdrv_inactivate_all() is only
done after sending it. If the src host is under load, dst may fail to
acquire the lock due to racing with the src unlocking it.
Fix this by hoisting the bdrv_inactivate_all() operation before
QEMU_VM_EOF.
N.B. A further improvement could possibly be done to cleanly handover
locks between src and dst, so that there is no window where a third QEMU
could steal the locks and prevent src and dst from running.
N.B. This commit includes a minor improvement to the error handling
by using qemu_file_set_error().
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 20170616160658.32290-1-famz@redhat.com
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
[PMM: noted qemu_file_set_error() use in commit as suggested by Daniel]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
--
I removed the [HACK] part because previous patch just check that
compression pages are not received.
Right now, if we receive a compressed page while this features are
disabled, Bad Things (TM) can happen. Just add a test for them.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
--
I had XBZRLE here also, but it don't need extra resources on
destination, only on source. Additionally libvirt don't enable it on
destination, so don't put it here.
- initialize invalid_flags at declaration time.
- remove extra space (peter)
0425dc9 is actually v1 of that patch, but it was accidentally
merged (while there was a v2). That will cause problem when we try to
migrate to some old QEMUs when return path is not really there. Let's
fix it, then squashing this patch with 0425dc9 will be exactly patch
content of v2.
Fixes: 0425dc9 ("migration: isolate return path on src")
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
That typedefs are needed on both files. New compilers (F25 where I
work) don't complain about repeating a typedef. But older ones
complain.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Let's properly expose the CPU type (machine-type number) via "STORE CPU
ID" and "STORE SUBSYSTEM INFORMATION".
As TCG emulates basic mode, the CPU identification number has the format
"Annnnn", whereby A is the CPU address, and n are parts of the CPU serial
number (0 for us for now).
A specification exception will be injected if the address is not aligned
to a double word. Low address protection will not be checked as
we're missing some more general support for that.
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170609133426.11447-3-david@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
We can tell from the program interrupt code, whether a program interrupt
has to forward the address in the PGM new PSW
(suppressing/terminated/completed) to point at the next instruction, or
if it is nullifying and the PSW address does not have to be incremented.
So let's not modify the PSW address outside of the injection path and
handle this internally. We just have to handle instruction length
auto detection if no valid instruction length can be provided.
This should fix various program interrupt injection paths, where the
PSW was not properly forwarded.
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170609142156.18767-3-david@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170609142156.18767-2-david@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
* vITS: Support save/restore
* timer/aspeed: Fix timer enablement when reload is not set
* aspped: add temperature sensor device
* timer.h: Provide better monotonic time on ARM hosts
* exynos4210: various cleanups
* exynos4210: support system poweroff
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20170613' into staging
target-arm queue:
* vITS: Support save/restore
* timer/aspeed: Fix timer enablement when reload is not set
* aspped: add temperature sensor device
* timer.h: Provide better monotonic time on ARM hosts
* exynos4210: various cleanups
* exynos4210: support system poweroff
# gpg: Signature made Tue 13 Jun 2017 15:05:49 BST
# gpg: using RSA key 0x3C2525ED14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg: aka "Peter Maydell <pmaydell@gmail.com>"
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE
* remotes/pmaydell/tags/pull-target-arm-20170613:
hw/intc/arm_gicv3_its: Allow save/restore
hw/intc/arm_gicv3_kvm: Implement pending table save
hw/intc/arm_gicv3_its: Implement state save/restore
kvm-all: Pass an error object to kvm_device_access
timer/aspeed: fix timer enablement when a reload is not set
aspeed: add a temp sensor device on I2C bus 3
hw/misc: add a TMP42{1, 2, 3} device model
timer.h: Provide better monotonic time
hw/misc/exynos4210_pmu: Add support for system poweroff
hw/intc/exynos4210_gic: Constify array of combiner interrupts
hw/arm/exynos: Use type define instead of hard-coded a9mpcore_priv string
hw/arm/exynos: Declare local variables in some order
hw/arm/exynos: Move DRAM initialization next boards
hw/timer/exynos4210_mct: Remove unused defines
hw/timer/exynos4210_mct: Cleanup indentation and empty new lines
hw/timer/exynos4210_mct: Fix checkpatch style errors
hw/intc/exynos4210_gic: Use more meaningful name for local variable
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
We change the restoration priority of both the GICv3 and ITS. The
GICv3 must be restored before the ITS and the ITS needs to be restored
before PCIe devices since it translates their MSI transactions.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-id: 1497023553-18411-5-git-send-email-eric.auger@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This patch adds the flush of the LPI pending bits into the
redistributor pending tables. This happens on VM stop.
There is no explicit restore as the tables are implicitly sync'ed
on ITS table restore and on LPI enable at redistributor level.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Message-id: 1497023553-18411-4-git-send-email-eric.auger@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
We need to handle both registers and ITS tables. While
register handling is standard, ITS table handling is more
challenging since the kernel API is devised so that the
tables are flushed into guest RAM and not in vmstate buffers.
Flushing the ITS tables on device pre_save() is too late
since the guest RAM is already saved at this point.
Table flushing needs to happen when we are sure the vcpus
are stopped and before the last dirty page saving. The
right point is RUN_STATE_FINISH_MIGRATE but sometimes the
VM gets stopped before migration launch so let's simply
flush the tables each time the VM gets stopped.
For regular ITS registers we just can use vmstate pre_save()
and post_load() callbacks.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Message-id: 1497023553-18411-3-git-send-email-eric.auger@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
In some circumstances, we don't want to abort if the
kvm_device_access fails. This will be the case during ITS
migration, in case the ITS table save/restore fails because
the guest did not program the vITS correctly. So let's pass an
error object to the function and return the ioctl value. New
callers will be able to make a decision upon this returned
value.
Existing callers pass &error_abort which will cause the
function to abort on failure.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Message-id: 1497023553-18411-2-git-send-email-eric.auger@redhat.com
[PMM: wrapped long line]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
When a timer is enabled before a reload value is set, the controller
waits for a reload value to be set before starting decrementing. This
fix tries to cover that case by changing the timer expiry only when
a reload value is valid.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Message-id: 1496739312-32304-1-git-send-email-clg@kaod.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Temperatures can be changed from the monitor with :
(qemu) qom-set /machine/unattached/device[2] temperature0 12000
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-id: 1496739230-32109-3-git-send-email-clg@kaod.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Largely inspired by the TMP105 temperature sensor, here is a model for
the TMP42{1,2,3} temperature sensors.
Specs can be found here :
http://www.ti.com/lit/gpn/tmp421
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-id: 1496739230-32109-2-git-send-email-clg@kaod.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Tested and confirmed that the stretch i386 debian qcow2 image on a
raspberry pi 2 works.
Fixes: LP#: 893208 <https://bugs.launchpad.net/qemu/+bug/893208/>
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 20170418191817.10430-1-bobby.prani@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
On all Exynos-based boards, the system powers down itself by driving
PS_HOLD signal low - eight bit in PS_HOLD_CONTROL register of PMU.
Handle writing to respective PMU register to fix power off failure:
reboot: Power down
Unable to poweroff system
shutdown: 31 output lines suppressed due to ratelimiting
Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000000
CPU: 0 PID: 1 Comm: shutdown Not tainted 4.11.0-rc8 #846
Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
[<c031050c>] (unwind_backtrace) from [<c030ba6c>] (show_stack+0x10/0x14)
[<c030ba6c>] (show_stack) from [<c05b2800>] (dump_stack+0x88/0x9c)
[<c05b2800>] (dump_stack) from [<c03d3140>] (panic+0xdc/0x268)
[<c03d3140>] (panic) from [<c0343614>] (do_exit+0xa90/0xab4)
[<c0343614>] (do_exit) from [<c035f2dc>] (SyS_reboot+0x164/0x1d0)
[<c035f2dc>] (SyS_reboot) from [<c0307c80>] (ret_fast_syscall+0x0/0x3c)
Additionally the initial value of PS_HOLD has to be changed because
recent Linux kernel (v4.12-rc1) uses regmap cache for this access.
When the register is kept at reset value, the kernel will not issue a
write to it. Usually the bootloader sets the eight bit of PS_HOLD high
so mimic its existence here.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The static array of interrupt combiner mappings is not modified so it
can be made const for code safeness.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Use a define for a9mpcore_priv device type name instead of hard-coded
string.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Bring some more readability by declaring local function variables: first
initialized ones and then the rest (with reversed-christmas-tree order).
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Before QOM-ifying the Exynos4 SoC model, move the DRAM initialization
from exynos4210.c to exynos4_boards.c because DRAM is board specific,
not SoC.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Remove defines not used anywhere.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Statements under 'case' were in some places wrongly indented bringing
confusion and making the code less readable. Remove also few unneeded
blank lines. No functional changes.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Fix checkpatch errors:
1. ERROR: spaces required around that '+' (ctx:VxV)
2. ERROR: spaces required around that '&' (ctx:VxV)
No functional changes.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
There are to SysBusDevice variables in exynos4210_gic_realize()
function: one for the device itself and second for arm_gic device. Add
a prefix "gic" to the second one so it will be easier to understand the
code.
While at it, put local uninitialized 'i' variable at the end, next to
other uninitialized ones.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Commit 104fc30279 ("qmp: Drop duplicated
QMP command object checks") removed the call to
trace_handle_qmp_command() while eliminating code duplication.
This patch brings the trace event back so QEMU-internal trace events can
be correlated with the QMP commands that caused them.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20170605104216.22429-3-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
It is often useful to correlate QEMU-internal events with monitor
commands that caused them. Trace the full HMP command being executed.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20170605104216.22429-2-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This batch contains more patches to rework the pseries machine hotplug
infrastructure, plus an assorted batch of bugfixes.
It contains a start on fixes to restore migration from older machine
types on older versions which was broken by some xics changes. There
are still a few missing pieces here, though.
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Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.10-20170609' into staging
ppc patch queue 2017-06-09
This batch contains more patches to rework the pseries machine hotplug
infrastructure, plus an assorted batch of bugfixes.
It contains a start on fixes to restore migration from older machine
types on older versions which was broken by some xics changes. There
are still a few missing pieces here, though.
# gpg: Signature made Fri 09 Jun 2017 06:26:03 BST
# gpg: using RSA key 0x6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# gpg: aka "David Gibson (kernel.org) <dwg@kernel.org>"
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392
* remotes/dgibson/tags/ppc-for-2.10-20170609:
Revert "spapr: fix memory hot-unplugging"
xics: drop ICPStateClass::cpu_setup() handler
xics: setup cpu at realize time
xics: pass appropriate types to realize() handlers.
xics: introduce macros for ICP/ICS link properties
hw/cpu: core.c can be compiled as common object
hw/ppc/spapr: Adjust firmware name for PCI bridges
xics: add reset() handler to ICPStateClass
pnv_core: drop reference on ICPState object during CPU realization
spapr: Rework DRC name handling
spapr: Fold spapr_phb_{add,remove}_pci_device() into their only callers
spapr: Change DRC attach & detach methods to functions
spapr: Clean up handling of DR-indicator
spapr: Clean up RTAS set-indicator
spapr: Don't misuse DR-indicator in spapr_recover_pending_dimm_state()
spapr: Clean up DR entity sense handling
pseries: Correct panic behaviour for pseries machine type
spapr: fix memory leak in spapr_memory_pre_plug()
target/ppc: fix memory leak in kvmppc_is_mem_backend_page_size_ok()
target/ppc: pass const string to kvmppc_is_mem_backend_page_size_ok()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Can happen with usb-storage devices: ehci_work_bh calls usb-storage,
usb-storage calls into block layer, block layer may run BHs.
Add a simple bool and just do nothing in case we figure ehci_work_bh is
active.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20170612073109.25930-1-kraxel@redhat.com
Some fixes all over the place.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
pc, pci, vhost: fixes
Some fixes all over the place.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Thu 08 Jun 2017 20:04:24 BST
# gpg: using RSA key 0x281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>"
# 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:
hw/pcie: fix the generic pcie root port to support migration
nvdimm acpi: fix region format interface code
vhost-user-bridge: fix iov_restore_front() warning
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
