* configure fix for environment variables (Daniel)
* fix memory leaks (Alex)
* x86_64 MTTCG fixes (Emilio)
* introduce atomic64 (Emilio)
* Fix for virtio hang (Fam, myself)
* SH serial port fix (Geert)
* Deprecate rotation_rate for scsi-block (Fam)
* Extend memory-backend-file availability to all POSIX hosts (Hikaru)
* Memory API cleanups and fixes (Igor, Li Qiang, Peter, Philippe)
* MSI/IOMMU fix (Jan)
* Socket reconnection fixes (Marc-André)
* icount fixes (Emilio, myself)
* QSP fixes for Coverity (myself)
* Some record/replay improovements (Pavel)
* Packed struct fixes (Peter)
* Windows dump fixes and elf2dmp (Viktor)
* kbmclock fix (Yongji)

# gpg: Signature made Tue 02 Oct 2018 18:13:12 BST
# gpg:                using RSA key BFFBD25F78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream: (80 commits)
  hw/scsi/mptendian: Avoid taking address of fields in packed structs
  cpus: fix TCG kick timer leak
  docs/devel/memory.txt: Document _with_attrs accessors
  hw/nvram/fw_cfg: Use memberwise copy of MemoryRegionOps struct
  memory: Remove old_mmio accessors
  memory: Fix access_with_adjusted_size(small size) on big-endian memory regions
  memory: Refactor common shifting code from accessors
  memory: Use MAKE_64BIT_MASK()
  virtio: do not take address of packed members
  replay: replay BH for IDE trim operation
  hostmem-file: make available memory-backend-file on POSIX-based hosts
  target/i386: fix translation for icount mode
  hvf: drop unused variable
  qom/object: add some interface asserts
  accel/tcg: Remove dead code
  lsi53c895a: convert to trace-events
  scsi-block: Deprecate rotation_rate
  kvmclock: run KVM_KVMCLOCK_CTRL ioctl in vcpu thread
  MAINTAINERS: add myself as elf2dmp maintainer
  contrib: add elf2dmp tool
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Taking the address of a field in a packed struct is a bad idea, because
it might not be actually aligned enough for that pointer type (and
thus cause a crash on dereference on some host architectures). Newer
versions of clang warn about this. Avoid the bug by not using the
"modify in place" byte swapping functions.

This patch was produced with the following simple spatch script:
@@
expression E;
@@
-le16_to_cpus(&E);
+E = le16_to_cpu(E);
@@
expression E;
@@
-le32_to_cpus(&E);
+E = le32_to_cpu(E);
@@
expression E;
@@
-le64_to_cpus(&E);
+E = le64_to_cpu(E);
@@
expression E;
@@
-cpu_to_le16s(&E);
+E = cpu_to_le16(E);
@@
expression E;
@@
-cpu_to_le32s(&E);
+E = cpu_to_le32(E);
@@
expression E;
@@
-cpu_to_le64s(&E);
+E = cpu_to_le64(E);

followed by some minor tidying of overlong lines and bad indent.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180927134852.21490-1-peter.maydell@linaro.org>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

This is an alternative fix to Marc-André's original patch.

Reported-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20180927171724.30128-1-alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

When we added the _with_attrs accessors we forgot to mention
them in the documentation.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180824170422.5783-4-peter.maydell@linaro.org>
Based-on: <20180802174042.29234-1-peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

We've now removed the 'old_mmio' member from MemoryRegionOps,
so we can perform the copy as a simple struct copy rather
than having to do it via a memberwise copy.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180824170422.5783-3-peter.maydell@linaro.org>
Based-on: <20180802174042.29234-1-peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Now that all the users of old_mmio MemoryRegion accessors
have been converted, we can remove the core code support.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180824170422.5783-2-peter.maydell@linaro.org>
Based-on: <20180802174042.29234-1-peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Memory regions configured as DEVICE_BIG_ENDIAN (or DEVICE_NATIVE_ENDIAN on
big-endian guest) behave incorrectly when the memory access 'size' is smaller
than the implementation 'access_size'.

In the following code segment from access_with_adjusted_size():

    if (memory_region_big_endian(mr)) {
        for (i = 0; i < size; i += access_size) {
            r |= access_fn(mr, addr + i, value, access_size,
                        (size - access_size - i) * 8, access_mask, attrs);
        }

(size - access_size - i) * 8 is the number of bits that will arithmetic
shift the current value.

Currently we can only 'left' shift a read() access, and 'right' shift a write().

When the access 'size' is smaller than the implementation, we get a negative
number of bits to shift.

For the read() case, a negative 'left' shift is a 'right' shift :)
However since the 'shift' type is unsigned, there is currently no way to
right shift.

Fix this by changing the access_fn() prototype to handle signed shift values,
and modify the memory_region_shift_read|write_access() helpers to correctly
arithmetic shift the opposite direction when the 'shift' value is negative.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20180927002416.1781-4-f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20180927002416.1781-3-f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20180927002416.1781-2-f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

The address of a packed member is not packed, which may cause accesses
to unaligned pointers.  Avoid this by reading the packed value before
passing it to another function.

Cc: Jason Wang <jasowang@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

This patch makes IDE trim BH deterministic, because it affects
the device state. Therefore its invocation should be replayed
instead of running at the random moment.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20180912081950.3228.68987.stgit@pasha-VirtualBox>
Acked-by: John Snow <jsnow@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Before this change, memory-backend-file object is valid for Linux hosts
only because hostmem-file.c is compiled only on Linux hosts.
However, other POSIX-based hosts (such as macOS) can support
memory-backend-file object in the same way as on Linux hosts.
This patch makes hostmem-file.c and related functions to be compiled on
all POSIX-based hosts to make available memory-backend-file on them.

Signed-off-by: Hikaru Nishida <hikarupsp@gmail.com>
Message-Id: <20180924123205.29651-1-hikarupsp@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

This patch fixes the checking of boundary crossing instructions.
In icount mode only first instruction of the block may cross
the page boundary to keep the translation deterministic.
These conditions already existed, but compared the wrong variable.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
Message-Id: <20180920071702.22477.43980.stgit@pasha-VirtualBox>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

An interface can't have any instance size or callback, or itself
implement other interfaces (this is unsupported).

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20180912125303.29158-1-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

The global cpu_single_env variable has been removed more than 5 years
ago, so apparently nobody used this dead debug code in that timeframe
anymore. Thus let's remove it completely now.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1537204134-15905-1-git-send-email-thuth@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20180917053229.4853-1-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

This option is added together with scsi-disk but is never honoured,
becuase we don't emulate the VPD page for scsi-block. We could intercept
and inject the user specified value like for max xfer len, but it's
probably not helpful since the intent of 070f8009 was for random
entropy aspects, not for performance. If emulated rotation rate is
desired, scsi-hd is more suitable.

Signed-off-by: Fam Zheng <famz@redhat.com>

Message-Id: <20180917083138.3948-1-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

According to KVM API Documentation, we should only
run vcpu ioctls from the same thread that was used
to create the vcpu. This patch makes KVM_KVMCLOCK_CTRL
ioctl consistent with the Documentation.

No functional change.

Signed-off-by: Yongji Xie <xieyongji@baidu.com>
Signed-off-by: Chai Wen <chaiwen@baidu.com>
Message-Id: <1531315364-2551-1-git-send-email-xieyongji@baidu.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Yongji Xie <elohimes@gmail.com>

Add myself as contrib/elf2dmp maintainer and elf2dmp as maintained.

Signed-off-by: Viktor Prutyanov <viktor.prutyanov@phystech.edu>
Message-Id: <20180918095422.4468-1-viktor.prutyanov@phystech.edu>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

elf2dmp is a converter from ELF dump (produced by 'dump-guest-memory') to
Windows MEMORY.DMP format (also know as 'Complete Memory Dump') which can be
opened in WinDbg.

This tool can help if VMCoreInfo device/driver is absent in Windows VM and
'dump-guest-memory -w' is not available but dump can be created in ELF format.

The tool works as follows:
1. Determine the system paging root looking at GS_BASE or KERNEL_GS_BASE
to locate the PRCB structure and finds the kernel CR3 nearby if QEMU CPU
state CR3 is not suitable.
2. Find an address within the kernel image by dereferencing the first
IDT entry and scans virtual memory upwards until the start of the
kernel.
3. Download a PDB matching the kernel from the Microsoft symbol store,
and figure out the layout of certain relevant structures necessary for
the dump.
4. Populate the corresponding structures in the memory image and create
the appropriate dump header.

Signed-off-by: Viktor Prutyanov <viktor.prutyanov@virtuozzo.com>
Message-Id: <1535546488-30208-3-git-send-email-viktor.prutyanov@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

This patch moves definitions of Windows dump structures to
include/qemu/win_dump_defs.h to keep create_win_dump() prototype separate.

Signed-off-by: Viktor Prutyanov <viktor.prutyanov@virtuozzo.com>
Message-Id: <1535546488-30208-2-git-send-email-viktor.prutyanov@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Just as other devices do.

Signed-off-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <1536901871-2729-1-git-send-email-liq3ea@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

While at it, also rename var to indicate it is not used only in KVM.

Reviewed-by: Nikita Leshchenko <nikita.leshchenko@oracle.com>
Reviewed-by: Patrick Colp <patrick.colp@oracle.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Message-Id: <20180914003827.124570-2-liran.alon@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

This flag will be used for KVM's nested VMX migration; the HF_GUEST_MASK name
is already used in KVM, adopt it in QEMU as well.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Interrupt handling depends on various flags in env->hflags or env->hflags2,
and the exact detail were not exactly replicated between x86_cpu_has_work
and x86_cpu_exec_interrupt.  Create a new function that extracts the
highest-priority non-masked interrupt, and use it in both functions.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

For some reason __APPLE__ was not checked in pty code.  However, the #ifdef
is redundant: this file is already compiled only if CONFIG_POSIX, same as
util/qemu-openpty.c which it uses.

Reported-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

This test exhibits a regression fixed by the previous reverts.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20180817135224.22971-5-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Peter reported a test failure on FreeBSD with the new reconnect test:

MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}
gtester -k --verbose -m=quick tests/test-char
TEST: tests/test-char... (pid=16190)
  /char/null:                                                          OK
  /char/invalid:                                                       OK
  /char/ringbuf:                                                       OK
  /char/mux:                                                           OK
  /char/stdio:                                                         OK
  /char/pipe:                                                          OK
  /char/file:                                                          OK
  /char/file-fifo:                                                     OK
  /char/udp:                                                           OK
  /char/serial:                                                        OK
  /char/hotswap:                                                       OK
  /char/socket/basic:                                                  OK
  /char/socket/reconnect:                                              FAIL
GTester: last random seed: R02S521380d9c12f1dac3ad1763bf5665c27
(pid=16367)
  /char/socket/fdpass:                                                 OK
FAIL: tests/test-char
**
ERROR:tests/test-char.c:353:char_socket_test_common: assertion failed:
(object_property_get_bool(OBJECT(chr_client), "connected",
&error_abort))

It turns out that the socket test code checks both server and client
connection states, but doesn't wait for both.

Wait for the client side as well.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20180823143125.16767-5-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

So far, tcp_chr_update_read_handler() only updated the read
handler. Let's also update the hup handler.

Factorize the code while at it. (note that s->ioc != NULL when
s->connected)

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20180817135224.22971-4-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

This reverts commit 25679e5d.

This commit broke "reconnect socket" chardev that are created after
"machine_done": they no longer try to connect. It broke also
vhost-user-test that uses chardev while there is no "machine_done"
event.

The goal of this patch was to move the "connect" source to the
frontend context. chr->gcontext is set with
qemu_chr_fe_set_handlers(). But there is no guarantee that it will be
called, so we can't delay connection until then: the chardev should
still attempt to connect during open(). qemu_chr_fe_set_handlers() is
eventually called later and will update the context.

Unless there is a good reason to not use initially the default
context, I think we should revert to the previous state to fix the
regressions.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20180817135224.22971-3-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

This reverts commit 99f2f541.

See next commit reverting 25679e5d as
well for rationale.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20180817135224.22971-2-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

if MemoryRegion intialization fails it's left in semi-initialized state,
where it's size is not 0 and attached as child to owner object.
And this leds to crash in following use-case:
    (monitor) object_add memory-backend-file,id=mem1,size=99999G,mem-path=/tmp/foo,discard-data=yes
    memory.c:2083: memory_region_get_ram_ptr: Assertion `mr->ram_block' failed
    Aborted (core dumped)
it happens due to assumption that memory region is intialized when
   memory_region_size() != 0
and therefore it's ok to access it in
   file_backend_unparent()
      if (memory_region_size() != 0)
          memory_region_get_ram_ptr()

which happens when object_add fails and unparents failed backend making
file_backend_unparent() access invalid memory region.

Fix it by making sure that memory_region_init_foo() APIs cleanup externally
visible side effects on failure (like set size to 0 and unparenting object)

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1536064777-42312-1-git-send-email-imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Signed-off-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <20180912160118.21158-4-liq3ea@163.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Also change the write callback name.

Signed-off-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <20180912160118.21158-5-liq3ea@163.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Signed-off-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <20180912160118.21158-3-liq3ea@163.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Signed-off-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <20180912160118.21158-2-liq3ea@163.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

UI uses timers based on virtual clock for managing key queue.
This is incorrect because this service is not related to the guest state,
and its events should not be recorded and replayed. But these timers should
stop when the guest is not executing.
This patch changes using virtual clock to the new virtual_ext clock,
which runs as virtual clock, but its timers are not saved to the log.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
Message-Id: <20180912082013.3228.33664.stgit@pasha-VirtualBox>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

ICMP implementation for IPv6 uses timers based on virtual clock.
This is incorrect because this service is not related to the guest state,
and its events should not be recorded and replayed.
This patch changes using virtual clock to the new virtual_ext clock.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
Message-Id: <20180912082007.3228.91491.stgit@pasha-VirtualBox>
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Slirp and VNC modules use virtual clock for processing some events that
are related to the guest execution speed.
But virtual clock-related events are consideres to be deterministic and
are recorded/replayed by icount mechanism. But slirp and VNC lie outside
the recorded guest core (which includes CPU and peripherals).
Therefore slirp and VNC are external for the guest, but should work at
guest speed.
This patch introduces new virtual clock which can be used for external
subsystems for running timers that are synchronized with the guest.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
Message-Id: <20180912082002.3228.82417.stgit@pasha-VirtualBox>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>