Something that commit 254316fa1f ("intc: make HMP 'info irq' and 'info
pic' commands available on all targets", 2016-10-04) forgot to touch up.
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20171229073104.3810-2-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
It calls cpu_loop_exit in system emulation mode (and should never be
called in user emulation mode).
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Message-Id: <6f4d44ffde55d074cbceb48309c1678600abad2f.1522769774.git.jan.kiszka@web.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
We need to terminate the translation block after STGI so that pending
interrupts can be injected.
This fixes pending NMI injection for Jailhouse which uses "stgi; clgi"
to open a brief injection window.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Message-Id: <37939b244dda0e9cccf96ce50f2b15df1e48315d.1522769774.git.jan.kiszka@web.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Check for SVM interception prior to injecting an NMI. Tested via the
Jailhouse hypervisor.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Message-Id: <c65877e9a011ee4962931287e59f502c482b8d0b.1522769774.git.jan.kiszka@web.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This adds owners/parents (which are the same, just occasionally
owner==NULL) printing for memory regions; a new '-o' flag
enabled new output.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-Id: <20180604032511.6980-1-aik@ozlabs.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Some variations of Linux kernels end up accessing MSR's that the Windows
Hypervisor doesn't implement which causes a GP to be returned to the guest.
This fix registers QEMU for unimplemented MSR access and globally returns 0 on
reads and ignores writes. This behavior is allows the Linux kernel to probe the
MSR with a write/read/check sequence it does often without failing the access.
Signed-off-by: Justin Terry (VM) <juterry@microsoft.com>
Message-Id: <20180605221500.21674-2-juterry@microsoft.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Adds a workaround to an incorrect value setting
CPUID Fn8000_0001_ECX[bit 9 OSVW] = 1. This can cause a guest linux kernel
to panic when an issue to rdmsr C001_0140h returns 0. Disabling this feature
correctly allows the guest to boot without accessing the osv workarounds.
Signed-off-by: Justin Terry (VM) <juterry@microsoft.com>
Message-Id: <20180605221500.21674-1-juterry@microsoft.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Remove the legacy esp_init() function now that there are no more remaining
users.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20180613094727.11326-3-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Tested-by: Hervé Poussineau <hpoussin@reactos.org>
MIPS jazz is the last user of the legacy esp_init() function so move creation
of the ESP device over to use qdev.
Note that the esp_reset and dma_enable qemu_irqs are currently unused and so
we do not wire these up and instead remove the variables to prevent the
compiler emitting unused variable warnings.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20180613094727.11326-2-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Tested-by: Hervé Poussineau <hpoussin@reactos.org>
Let management know if there were any problems communicating with
qemu-pr-helper. The event is edge-triggered, and is sent every time
the connection status of the pr-manager-helper object changes.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
When writing to the qemu-pr-helper socket failed, the persistent
reservation manager was correctly disconnecting the socket, but it
did not clear pr_mgr->ioc. So the rest of the code did not know
that the socket had been disconnected, accessed pr_mgr->ioc and
happily caused a crash.
To reproduce, it is enough to stop qemu-pr-helper between QEMU
startup and executing e.g. sg_persist -k /dev/sdb.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The response size is expected to be zero if the SCSI status is not
"GOOD", but nothing was resetting it.
This can be reproduced simply by "sg_persist -s /dev/sdb" where /dev/sdb
in the guest is a scsi-block device corresponding to a multipath device
on the host.
Before:
PR in (Read full status): Aborted command
and on the host:
prh_write_response: Assertion `resp->sz == 0' failed.
After:
PR in (Read full status): bad field in cdb or parameter list
(perhaps unsupported service action)
Reported-by: Jiri Belka <jbelka@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Currently --help shows "(default '(null)')" for the -k/--socket-path
option. Fix it by getting the default path in /var/run.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
We currently have got three ways of turning on the HAX accelerator:
"-machine accel=hax", "-accel hax" and "-enable-hax". That's really
confusing and overloaded. Since "-accel" is our preferred way to enable
an accelerator nowadays, and "-accel hax" is even less to type than
"-enable-hax", let's deprecate the "-enable-hax" option now.
Note: While "-enable-kvm" is available since a long time and can hardly be
removed since it is used in a lot of upper layer tools and scripts, the
"-enable-hax" option is still rather new and not very widespread yet, so
I think that it should be OK if we remove this in a couple of releases again
(we'll see whether someone complains after seeing the deprecation message -
then we could still reconsider to keep it if there a well-founded reasons).
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1529950933-28347-1-git-send-email-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Coverity does not like the new _Float* types that are used by
recent glibc, and croaks on every single file that includes
stdlib.h. Add dummy typedefs to please it.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Right now, there is some inconsistency between hotplugged and
coldplugged memory. DIMMs added via "-device" result in different stats
than DIMMs added using "device_add".
E.g.
[...]
-numa node,nodeid=0,cpus=0-1 -numa node,nodeid=1,cpus=2-3 \
-m 4G,maxmem=20G,slots=2 \
-object memory-backend-ram,id=mem0,size=8G \
-device pc-dimm,id=dimm0,memdev=mem0 \
-object memory-backend-ram,id=mem1,size=8G \
-device nvdimm,id=dimm1,memdev=mem1,node=1
Results in NUMA info
(qemu) info numa
info numa
2 nodes
node 0 cpus: 0 1
node 0 size: 10240 MB
node 0 plugged: 0 MB
node 1 cpus: 2 3
node 1 size: 10240 MB
node 1 plugged: 0 MB
But in memory size summary:
(qemu) info memory_size_summary
info memory_size_summary
base memory: 4294967296
plugged memory: 17179869184
Make this consistent by reporting all hot and coldplugged
memory a.k.a. DIMM and NVDIMM as "plugged".
Fixes: 31959e82fb ("hmp: extend "info numa" with hotplugged memory information")
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180622144045.737-1-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Let's try to reduce error handling a bit. In the plug/unplug case, the
device was realized and therefore we can assume that getting access to
the memory region will not fail.
For get_vmstate_memory_region() this is already handled that way.
Document both cases.
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180619134141.29478-13-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
We might get a call to get_memory_region() before the device has been
realized. We should return a consistent value, as the return value
will e.g. later on be used in the pre_plug handler.
To avoid duplicating too much code, factor the initialization and checks
out into a helper function.
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180619134141.29478-12-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This way we can easily check if the region has already been inititalized
without having to rely on the size of an uninitialized region being 0.
Free the region in nvdimm_finalize() and not in unrealize() as we will
allow to create the region before realization in following patches.
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180619134141.29478-11-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
We don't allow to modify it after realization. So we can simply turn
it into a static property.
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180619134141.29478-10-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Importantly, get_vmstate_memory_region() should also fail with a proper
error if called before the device is realized. For a PCDIMM, both functions
are to return the same thing, so share the implementation.
All current users are called after the device has been realized, so we
can expect the calls to succeed.
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180619134141.29478-9-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Unused, so let's remove it.
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180619134141.29478-8-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Our parent class (PC_DIMM) provides exactly the same function.
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180619134141.29478-7-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
We can perform these checks before the device is actually realized.
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180619134141.29478-6-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Not used outside of pc-dimm.c and there shouldn't be other users. If
other devices (e.g. memory devices) ever have to also use slots, then we
will have to factor this out.
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180619134141.29478-5-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Let's rename it to make it look more consistent.
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180619134141.29478-4-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Use a similar naming scheme as spapr. This way, we can go ahead and
rename e.g. pc_dimm_memory_plug to pc_dimm_plug, which avoids
confusion.
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180619134141.29478-3-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Not needed anymore, let's drop it.
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180619134141.29478-2-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The newline was removed by commit c97d6d2c, and broke -help output:
Before this patch:
$ qemu-system-x86_64 -help | grep smp
thread=single|multi (enable multi-threaded TCG)-smp [...]
After this patch:
$ qemu-system-x86_64 -help | grep smp
-smp [cpus=]n[,maxcpus=cpus][,cores=cores][,threads=threads][,sockets=sockets]
Fixes: c97d6d2cdf
Cc: Sergio Andres Gomez Del Real <sergio.g.delreal@gmail.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20180611195607.3015-1-ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The preferred way to select the KVM accelerator is to use "-accel kvm"
these days, so let's be consistent in our documentation and help texts.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1528866321-23886-3-git-send-email-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20180425025459.5258-5-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
We have had some tracing tools for mutex but it's not easy to use them
for e.g. dead locks. Let's provide "--enable-debug-mutex" parameter
when configure to allow QemuMutex to store the last owner that took
specific lock. It will be easy to use this tool to debug deadlocks
since we can directly know who took the lock then as long as we can have
a debugger attached to the process.
Reviewed-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20180425025459.5258-4-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Introduce some hooks for the shared part of qemu thread between POSIX
and Windows implementations. Note that in qemu_mutex_unlock_impl() we
moved the call before unlock operation which should make more sense.
And we don't need qemu_mutex_post_unlock() hook.
Put all these shared hooks into the header files. It should be internal
to qemu-thread but not for qemu-thread users, hence put into util/
directory.
Reviewed-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20180425025459.5258-3-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This allows us to use atomic-add-bench as a microbenchmark
for evaluating qemu_mutex_lock's performance.
Signed-off-by: Emilio G. Cota <cota@braap.org>
[cherry picked from https://github.com/cota/qemu/commit/f04f34df]
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20180425025459.5258-2-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
According to KVM commit 75d61fbc, it needs to delete the slot before
changing the KVM_MEM_READONLY flag. But QEMU commit 235e8982 only check
whether KVM_MEM_READONLY flag is set instead of changing. It doesn't
need to delete the slot if the KVM_MEM_READONLY flag is not changed.
This fixes a issue that migrating a VM at the OVMF startup stage and
VM is executing the codes in rom. Between the deleting and adding the
slot in kvm_set_user_memory_region, there is a chance that guest access
rom and trap to KVM, then KVM can't find the corresponding memslot.
While KVM (on ARM) injects an abort to guest due to the broken hva, then
guest will get stuck.
Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com>
Message-Id: <1526462314-19720-1-git-send-email-zhaoshenglong@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Right now we can crash QEMU using e.g.
qemu-system-x86_64 -m 256M,maxmem=20G,slots=2 \
-object memory-backend-file,id=mem0,size=12288,mem-path=/dev/zero,align=12288 \
-device pc-dimm,id=dimm1,memdev=mem0
qemu-system-x86_64: util/mmap-alloc.c:115:
qemu_ram_mmap: Assertion `is_power_of_2(align)' failed
Fix this by adding a proper check.
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180607154705.6316-3-david@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The start of the address space indicates which maximum alignment is
supported by our machine (e.g. ppc, x86 1GB). This is helpful to
catch fragmenting guest physical memory in strange fashions.
Right now we can crash QEMU by e.g. (there might be easier examples)
qemu-system-x86_64 -m 256M,maxmem=20G,slots=2 \
-object memory-backend-file,id=mem0,size=8192M,mem-path=/dev/zero,align=8192M \
-device pc-dimm,id=dimm1,memdev=mem0
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180607154705.6316-2-david@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The implementation of these two instructions was swapped.
At the same time, unify the setup of eflags for the insn group.
Reported-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20170712192902.15493-1-rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Only retry on serial_xmit if qemu_chr_fe_write returns 0, as this is the
only recoverable error.
Retrying with any other scenario, in addition to being a waste of CPU
cycles, can compromise the Guest stability if by the vCPU issuing the
write and the main loop thread are, by chance or explicit pinning,
running on the same pCPU.
Previous discussion:
https://lists.nongnu.org/archive/html/qemu-devel/2018-05/msg06998.html
Signed-off-by: Sergio Lopez <slp@redhat.com>
Message-Id: <1528185295-14199-1-git-send-email-slp@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20180602085259.17853-1-stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
The stdio chardev finalize method calls term_exit() to restore the
original terminal settings that were saved in the "oldtty" global. If
the qemu_chr_open_stdio() method exited with an error, we might not have
any original terminal settings saved in "oldtty" yet.
eg
$ qemu-system-x86_64 -monitor stdio -daemonize
qemu-system-x86_64: -monitor stdio: cannot use stdio with -daemonize
will cause QEMU to splatter the terminal settings with an all-zeros
"struct termios", with predictably unpleasant results. Fortunately the
existing "stdio_in_use" flag is suitable witness for whether "oldtty"
contains settings that need restoring.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20180604123043.13985-1-berrange@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Place them in exec.c, exec-all.h and ram_addr.h. This removes
knowledge of translate-all.h (which is an internal header) from
several files outside accel/tcg and removes knowledge of
AddressSpace from translate-all.c (as it only operates on ram_addr_t).
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
When an IOMMUMemoryRegion is in front of a virtio device,
address_space_cache_init does not set cache->ptr as the memory
region is not RAM. However when the device performs an access,
we end up in glue() which performs the translation and then uses
MAP_RAM. This latter uses the unset ptr and returns a wrong value
which leads to a SIGSEV in address_space_lduw_internal_cached_slow,
for instance.
In slow path cache->ptr is NULL and MAP_RAM must redirect to
qemu_map_ram_ptr((mr)->ram_block, ofs).
As MAP_RAM, IS_DIRECT and INVALIDATE are the same in _cached_slow
and non cached mode, let's remove those macros.
This fixes the use cases featuring vIOMMU (Intel and ARM SMMU)
which lead to a SIGSEV.
Fixes: 48564041a7 (exec: reintroduce MemoryRegion caching)
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Message-Id: <1528895946-28677-1-git-send-email-eric.auger@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Merge remote-tracking branch 'remotes/amarkovic/tags/mips-queue-2018-06-27' into staging
MIPS queue
# gpg: Signature made Wed 27 Jun 2018 19:16:23 BST
# gpg: using RSA key D4972A8967F75A65
# gpg: Good signature from "Aleksandar Markovic <amarkovic@wavecomp.com>"
# 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: 8526 FBF1 5DA3 811F 4A01 DD75 D497 2A89 67F7 5A65
* remotes/amarkovic/tags/mips-queue-2018-06-27:
target/mips: Fix gdbstub to read/write 64 bit FP registers
target/mips: Fix data type for offset
target/mips: Update gen_flt_ldst()
target/mips: Fix microMIPS on reset
target/mips: Raise a RI when given fs is n/a from CTC1
hw/pci-host/xilinx-pcie: don't make "io" region be RAM
hw/mips/mips_malta: don't make bios region 'nomigrate'
hw/mips/boston: don't make flash region 'nomigrate'
MAINTAINERS: update target-mips maintainers
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
