sdk/emulator/qemu.git
8 years agoFix corner-case when using VNC+SASL+SPICE
Christophe Fergeau [Tue, 12 Jan 2016 14:08:58 +0000 (15:08 +0100)]
Fix corner-case when using VNC+SASL+SPICE

Similarly to the commit 764eb39d1b6 fixing VNC+SASL+QXL, when starting
QEMU with SPICE but no SASL, and at the same time VNC with SASL, then
spice_server_init() will get called without a previous call to
spice_server_set_sasl_appname(), which will cause cyrus-sasl to
try to use /etc/sasl2/spice.conf (spice-server uses "spice" as its
default appname) rather than the expected /etc/sasl2/qemu.conf.

This commit unconditionally calls spice_server_set_sasl_appname()
before calling spice_server_init() in order to use the correct appname
even if SPICE without SASL was requested on qemu command line.

Signed-off-by: Christophe Fergeau <cfergeau@redhat.com>
Message-id: 1452607738-1521-1-git-send-email-cfergeau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
8 years agovnc: clear vs->tlscreds after unparenting it
Wolfgang Bumiller [Tue, 12 Jan 2016 12:52:39 +0000 (13:52 +0100)]
vnc: clear vs->tlscreds after unparenting it

This pointer should be cleared in vnc_display_close()
otherwise a use-after-free can happen when when using the
old style 'x509' and 'tls' options rather than a persistent
tls-creds -object, by issuing monitor commands to change
the vnc server like so:

Start with: -vnc unix:test.socket,x509,tls
Then use the following monitor command:
  change vnc unix:test.socket

After this the pointer is still set but invalid and a crash
can be triggered for instance by issuing the same command a
second time which will try to object_unparent() the same
pointer again.

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
8 years agogtk: implement set_echo
Paolo Bonzini [Thu, 17 Dec 2015 12:47:02 +0000 (13:47 +0100)]
gtk: implement set_echo

Even without line editing, this makes -qmp vc more pleasant with the
GTK+ backend.  The only issue is that set_echo is invoked very early,
long before a vc is actually associated with a VirtualConsole.  To work
around this, create a temporary VirtualConsole until then.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1450356422-31710-1-git-send-email-pbonzini@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
8 years agoMerge remote-tracking branch 'remotes/mcayland/tags/qemu-sparc-signed' into staging
Peter Maydell [Mon, 18 Jan 2016 09:33:36 +0000 (09:33 +0000)]
Merge remote-tracking branch 'remotes/mcayland/tags/qemu-sparc-signed' into staging

qemu-sparc update

# gpg: Signature made Sat 16 Jan 2016 12:32:06 GMT using RSA key ID AE0F321F
# gpg: Good signature from "Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>"

* remotes/mcayland/tags/qemu-sparc-signed:
  target-sparc: Migrate CWP and PIL for SPARC64
  target-sparc: Use VMState arrays for SPARC64 TLB/MMU state
  target-sparc: Convert to VMStateDescription
  target-sparc: Don't flush TLB in cpu_load function
  target-sparc: Split cpu_put_psr into side-effect and no-side-effect parts
  vmstate: define vmstate_info_uinttl
  vmstate: Introduce VMSTATE_VARRAY_MULTPLY
  vmstate: introduce CPU_DoubleU arrays

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agotarget-sparc: Migrate CWP and PIL for SPARC64
Peter Maydell [Mon, 11 Jan 2016 12:40:28 +0000 (12:40 +0000)]
target-sparc: Migrate CWP and PIL for SPARC64

In SPARC32 the env->cwp and env->psrpil state is part of the PSR
register, and gets migrated as part of that register.
In SPARC64 this state is in separate CWP and PIL registers, but we
were not doing anything to migrate those.

Add the missing fields to the migration vmstate (which is a
migration break, but without these fields migration is completely
broken anyway).

This change means that trying a save/load of a SPARC64 target at
the boot rom prompt now produces a system which at least responds
to keyboard input after the restore.

Reported-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
8 years agotarget-sparc: Use VMState arrays for SPARC64 TLB/MMU state
Peter Maydell [Mon, 11 Jan 2016 12:40:27 +0000 (12:40 +0000)]
target-sparc: Use VMState arrays for SPARC64 TLB/MMU state

Use VMState arrays for SPARC64 TLB/MMU state. This is
a migration-break for SPARC64 (but not for SPARC32),
which is acceptable because currently migration does not
work for any SPARC64 machines due to the lack of any migration
of interrupt controller state.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
8 years agotarget-sparc: Convert to VMStateDescription
Juan Quintela [Mon, 11 Jan 2016 12:40:26 +0000 (12:40 +0000)]
target-sparc: Convert to VMStateDescription

Convert the SPARC CPU from cpu_load/save functions to VMStateDescription.
We preserve migration compatibility with the previous version
(required for SPARC32 but not necessarily for SPARC64).

Signed-off-by: Juan Quintela <quintela@redhat.com>
[PMM:
 * Rebase and update to apply to master
 * VMSTATE_STRUCT_POINTER now takes type, not pointer-to-type
 * QEMUTimer* are migrated via VMSTATE_TIMER_PTR
 * Put CPUTimer vmstate struct inside TARGET_SPARC64 ifdef
 * Convert handling of PSR to use a vmstate_psr, like Alpha and ARM
]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
8 years agotarget-sparc: Don't flush TLB in cpu_load function
Peter Maydell [Mon, 11 Jan 2016 12:40:25 +0000 (12:40 +0000)]
target-sparc: Don't flush TLB in cpu_load function

There's no need to flush the TLB in the SPARC cpu_load function: we're
guaranteed to be loading state into a fresh clean configuration.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
8 years agotarget-sparc: Split cpu_put_psr into side-effect and no-side-effect parts
Peter Maydell [Mon, 11 Jan 2016 12:40:24 +0000 (12:40 +0000)]
target-sparc: Split cpu_put_psr into side-effect and no-side-effect parts

For inbound migration we really want to be able to set the PSR without
having any side effects, but cpu_put_psr() calls cpu_check_irqs() which
might try to deliver CPU interrupts. Split cpu_put_psr() into the
no-side-effect and side-effect parts.

This includes reordering the cpu_check_irqs() to the end of cpu_put_psr(),
because that function may actually end up calling cpu_interrupt(), which
does not seem like a good thing to happen in the middle of updating the PSR.

Suggested-by: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
8 years agovmstate: define vmstate_info_uinttl
Juan Quintela [Mon, 11 Jan 2016 12:40:23 +0000 (12:40 +0000)]
vmstate: define vmstate_info_uinttl

We are going to define arrays of this type, so we need the integer type.

Signed-off-by: Juan Quintela <quintela@redhat.com>
[PMM: updated to apply on current QEMU; renamed to 'uinttl'
 rather than 'uinttls' to match other vmstate naming]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
8 years agovmstate: Introduce VMSTATE_VARRAY_MULTPLY
Juan Quintela [Mon, 11 Jan 2016 12:40:22 +0000 (12:40 +0000)]
vmstate: Introduce VMSTATE_VARRAY_MULTPLY

This allows to send a partial array where the size is another
structure field multiplied by a constant.

Signed-off-by: Juan Quintela <quintela@redhat.com>
[PMM: updated to current master]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
8 years agovmstate: introduce CPU_DoubleU arrays
Juan Quintela [Mon, 11 Jan 2016 12:40:21 +0000 (12:40 +0000)]
vmstate: introduce CPU_DoubleU arrays

Add vmstate support for migrating arrays of CPU_DoubleU via
VMSTATE_CPUDOUBLE_ARRAY.

Signed-off-by: Juan Quintela <quintela@redhat.com>
[PMM: rebased, since files have all moved since 2012;
 added VMSTATE_CPUDOUBLE_ARRAY_V for consistency with FLOAT64]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
8 years agoMerge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging
Peter Maydell [Fri, 15 Jan 2016 18:01:43 +0000 (18:01 +0000)]
Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* qemu-char logfile facility
* NBD coroutine based negotiation
* bugfixes

# gpg: Signature made Fri 15 Jan 2016 17:58:28 GMT using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"

* remotes/bonzini/tags/for-upstream:
  qemu-char: do not leak QemuMutex when freeing a character device
  qemu-char: add logfile facility to all chardev backends
  nbd-server: do not exit on failed memory allocation
  nbd-server: do not check request length except for reads and writes
  nbd-server: Coroutine based negotiation
  nbd: Split nbd.c
  nbd: Always call "close_fn" in nbd_client_new
  SCSI device: fix to incomplete QOMify
  iscsi: send readcapacity10 when readcapacity16 failed
  qemu-char: delete send_all/recv_all helper methods
  vmw_pvscsi: x-disable-pcie, x-old-pci-configuration back-compat props are 2.5 specific
  scsi: initialise info object with appropriate size
  i386: avoid null pointer dereference
  target-i386: do not duplicate page protection checks
  scsi: revert change to scsi_req_cancel_async and add assertions

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoqemu-char: do not leak QemuMutex when freeing a character device
Paolo Bonzini [Fri, 15 Jan 2016 15:16:25 +0000 (16:16 +0100)]
qemu-char: do not leak QemuMutex when freeing a character device

The leak is only apparent on Win32.  On POSIX platforms destroying a
mutex is not necessary.

Reported-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agoqemu-char: add logfile facility to all chardev backends
Daniel P. Berrange [Mon, 11 Jan 2016 12:44:41 +0000 (12:44 +0000)]
qemu-char: add logfile facility to all chardev backends

Typically a UNIX guest OS will log boot messages to a serial
port in addition to any graphical console. An admin user
may also wish to use the serial port for an interactive
console. A virtualization management system may wish to
collect system boot messages by logging the serial port,
but also wish to allow admins interactive access.

Currently providing such a feature forces the mgmt app
to either provide 2 separate serial ports, one for
logging boot messages and one for interactive console
login, or to proxy all output via a separate service
that can multiplex the two needs onto one serial port.
While both are valid approaches, they each have their
own downsides. The former causes confusion and extra
setup work for VM admins creating disk images. The latter
places an extra burden to re-implement much of the QEMU
chardev backends logic in libvirt or even higher level
mgmt apps and adds extra hops in the data transfer path.

A simpler approach that is satisfactory for many use
cases is to allow the QEMU chardev backends to have a
"logfile" property associated with them.

 $QEMU -chardev socket,host=localhost,port=9000,\
                server=on,nowait,id-charserial0,\
logfile=/var/log/libvirt/qemu/test-serial0.log
       -device isa-serial,chardev=charserial0,id=serial0

This patch introduces a 'ChardevCommon' struct which
is setup as a base for all the ChardevBackend types.
Ideally this would be registered directly as a base
against ChardevBackend, rather than each type, but
the QAPI generator doesn't allow that since the
ChardevBackend is a non-discriminated union. The
ChardevCommon struct provides the optional 'logfile'
parameter, as well as 'logappend' which controls
whether QEMU truncates or appends (default truncate).

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1452516281-27519-1-git-send-email-berrange@redhat.com>
[Call qemu_chr_parse_common if cd->parse is NULL. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agonbd-server: do not exit on failed memory allocation
Paolo Bonzini [Thu, 7 Jan 2016 13:34:13 +0000 (14:34 +0100)]
nbd-server: do not exit on failed memory allocation

The amount of memory allocated in nbd_co_receive_request is driven by the
NBD client (possibly a virtual machine).  Parallel I/O can cause the
server to allocate a large amount of memory; check for failures and
return ENOMEM in that case.

Cc: qemu-block@nongnu.org
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agonbd-server: do not check request length except for reads and writes
Paolo Bonzini [Thu, 7 Jan 2016 13:32:42 +0000 (14:32 +0100)]
nbd-server: do not check request length except for reads and writes

Only reads and writes need to allocate memory correspondent to the
request length.  Other requests can be sent to the storage without
allocating any memory, and thus any request length is acceptable.

Reported-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Cc: qemu-block@nongnu.org
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agonbd-server: Coroutine based negotiation
Fam Zheng [Thu, 14 Jan 2016 08:41:03 +0000 (16:41 +0800)]
nbd-server: Coroutine based negotiation

Create a coroutine in nbd_client_new, so that nbd_send_negotiate doesn't
need qemu_set_block().

Handlers need to be set temporarily for csock fd in case the coroutine
yields during I/O.

With this, if the other end disappears in the middle of the negotiation,
we don't block the whole event loop.

To make the code clearer, unify all function names that belong to
negotiate, so they are less likely to be misused. This is important
because we rely on negotiation staying in main loop, as commented in
nbd_negotiate_read/write().

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <1452760863-25350-4-git-send-email-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agonbd: Split nbd.c
Fam Zheng [Thu, 14 Jan 2016 08:41:02 +0000 (16:41 +0800)]
nbd: Split nbd.c

We have NBD server code and client code, all mixed in a file. Now split
them into separate files under nbd/, and update MAINTAINERS.

filter_nbd for iotest 083 is updated to keep the log filtered out.

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <1452760863-25350-3-git-send-email-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agonbd: Always call "close_fn" in nbd_client_new
Fam Zheng [Thu, 14 Jan 2016 08:41:01 +0000 (16:41 +0800)]
nbd: Always call "close_fn" in nbd_client_new

Rename the parameter "close" to "close_fn" to disambiguous with
close(2).

This unifies error handling paths of NBDClient allocation:
nbd_client_new will shutdown the socket and call the "close_fn" callback
if negotiation failed, so the caller don't need a different path than
the normal close.

The returned pointer is never used, make it void in preparation for the
next patch.

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <1452760863-25350-2-git-send-email-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agoSCSI device: fix to incomplete QOMify
Cao jin [Wed, 6 Jan 2016 09:37:46 +0000 (17:37 +0800)]
SCSI device: fix to incomplete QOMify

Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <1452073066-28319-1-git-send-email-caoj.fnst@cn.fujitsu.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agoiscsi: send readcapacity10 when readcapacity16 failed
Zhu Lingshan [Tue, 29 Dec 2015 03:32:14 +0000 (11:32 +0800)]
iscsi: send readcapacity10 when readcapacity16 failed

When play with Dell MD3000 target, for sure it
is a TYPE_DISK, but readcapacity16 would fail.
Then we find that readcapacity10 succeeded. It
looks like the target just support readcapacity10
even through it is a TYPE_DISK or have some
TYPE_ROM characteristics.

This patch can give a chance to send
readcapacity16 when readcapacity10 failed.
This patch is not harmful to original pathes

Signed-off-by: Zhu Lingshan <lszhu@suse.com>
Message-Id: <1451359934-9236-1-git-send-email-lszhu@suse.com>
[Don't fall through on UNIT ATTENTION. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agoqemu-char: delete send_all/recv_all helper methods
Daniel P. Berrange [Wed, 23 Dec 2015 13:59:04 +0000 (13:59 +0000)]
qemu-char: delete send_all/recv_all helper methods

The qemu-char.c contains two helper methods send_all
and recv_all. These are in fact declared in sockets.h
so ought to have been in util/qemu-sockets.c. For added
fun the impl of recv_all is completely missing on Win32.

Fortunately there is only a single caller of these
methods, the TPM passthrough code, which is only
ever compiled on Linux. With only a single caller
these helpers are not compelling enough to keep so
inline them in the TPM code, avoiding the need to
fix the missing recv_all on Win32.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1450879144-17111-1-git-send-email-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agovmw_pvscsi: x-disable-pcie, x-old-pci-configuration back-compat props are 2.5 specific
Shmulik Ladkani [Wed, 23 Dec 2015 19:55:58 +0000 (21:55 +0200)]
vmw_pvscsi: x-disable-pcie, x-old-pci-configuration back-compat props are 2.5 specific

pvscsi's x-disable-pcie and x-old-pci-configuration backward compat
properties were introduced in 952970b and d5da3ef:

  vmw_pvscsi: Introduce 'x-old-pci-configuration' backword compatability property
  vmw_pvscsi: Introduce 'x-disable-pcie' backword compatability property

and were placed into HW_COMPAT_2_4.

However since these commits were pulled post v2.5, move them to
HW_COMPAT_2_5.

Signed-off-by: Shmulik Ladkani <shmulik.ladkani@ravellosystems.com>
Message-Id: <1450900558-20113-1-git-send-email-shmulik.ladkani@ravellosystems.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agoscsi: initialise info object with appropriate size
P J P [Mon, 21 Dec 2015 09:43:13 +0000 (15:13 +0530)]
scsi: initialise info object with appropriate size

While processing controller 'CTRL_GET_INFO' command, the routine
'megasas_ctrl_get_info' overflows the '&info' object size. Use its
appropriate size to null initialise it.

Reported-by: Qinghao Tang <luodalongde@gmail.com>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Message-Id: <alpine.LFD.2.20.1512211501420.22471@wniryva>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: P J P <ppandit@redhat.com>
8 years agoi386: avoid null pointer dereference
P J P [Fri, 18 Dec 2015 06:05:07 +0000 (11:35 +0530)]
i386: avoid null pointer dereference

    Hello,

A null pointer dereference issue was reported by Mr Ling Liu, CC'd here. It
occurs while doing I/O port write operations via hmp interface. In that,
'current_cpu' remains null as it is not called from cpu_exec loop, which
results in the said issue.

Below is a proposed (tested)patch to fix this issue; Does it look okay?

===
From ae88a4947fab9a148cd794f8ad2d812e7f5a1d0f Mon Sep 17 00:00:00 2001
From: Prasad J Pandit <pjp@fedoraproject.org>
Date: Fri, 18 Dec 2015 11:16:07 +0530
Subject: [PATCH] i386: avoid null pointer dereference

When I/O port write operation is called from hmp interface,
'current_cpu' remains null, as it is not called from cpu_exec()
loop. This leads to a null pointer dereference in vapic_write
routine. Add check to avoid it.

Reported-by: Ling Liu <liuling-it@360.cn>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Message-Id: <alpine.LFD.2.20.1512181129320.9805@wniryva>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: P J P <ppandit@redhat.com>
8 years agotarget-i386: do not duplicate page protection checks
Paolo Bonzini [Tue, 17 Nov 2015 16:09:33 +0000 (17:09 +0100)]
target-i386: do not duplicate page protection checks

x86_cpu_handle_mmu_fault is currently checking twice for writability
and executability of pages; the first time to decide whether to
trigger a page fault, the second time to compute the "prot" argument
to tlb_set_page_with_attrs.

Reorganize code so that first "prot" is computed, then it is used
to check whether to raise a page fault, then finally PROT_WRITE is
removed if the D bit will have to be set.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agoscsi: revert change to scsi_req_cancel_async and add assertions
Paolo Bonzini [Fri, 18 Dec 2015 08:54:53 +0000 (09:54 +0100)]
scsi: revert change to scsi_req_cancel_async and add assertions

Fam Zheng noticed that the change in commit 36896bf ("scsi: always call
notifier on async cancellation", 2015-12-16) could cause a leak of
the request; scsi_req_cancel_async now calls scsi_req_ref
multiple times for multiple cancellations, but there is only
one call to scsi_req_cancel_complete.

So revert the patch and instead assert that the problematic case (a call
to scsi_req_cancel_async after the aiocb has been completed) cannot
happen.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agoMerge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20160115' into...
Peter Maydell [Fri, 15 Jan 2016 15:49:43 +0000 (15:49 +0000)]
Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20160115' into staging

target-arm queue:
 * use the right MMU index when handling unaligned accesses
 * xlnx-zynqmp: Add support for high DDR memory regions
 * target-arm: support QMP dump-guest-memory
 * ARM: virt: Don't generate RTC ACPI device when using UEFI

# gpg: Signature made Fri 15 Jan 2016 15:16:19 GMT using RSA key ID 14360CDE
# 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>"

* remotes/pmaydell/tags/pull-target-arm-20160115:
  ARM: virt: Don't generate RTC ACPI device when using UEFI
  target-arm: dump-guest-memory: add vfp notes for arm
  elf: add arm note types
  target-arm: dump-guest-memory: add prfpreg notes for aarch64
  target-arm: support QMP dump-guest-memory
  dump: allow target to set the physical base
  dump: allow target to set the page size
  dump: qemunotes aren't commonly needed
  qapi-schema: dump-guest-memory: Improve text
  xlnx-zynqmp: Add support for high DDR memory regions
  target-arm: Use the right MMU index in arm_regime_using_lpae_format

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoARM: virt: Don't generate RTC ACPI device when using UEFI
Shannon Zhao [Fri, 15 Jan 2016 14:11:31 +0000 (22:11 +0800)]
ARM: virt: Don't generate RTC ACPI device when using UEFI

When booting the VM with UEFI, UEFI takes ownership of the RTC hardware.
While UEFI can use libfdt to disable the RTC device node in the DTB that
it passes to the OS, it cannot modify AML. Therefore, we won't generate
the RTC ACPI device at all when using UEFI.

Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Message-id: 1452867091-4023-1-git-send-email-shannon.zhao@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agotarget-arm: dump-guest-memory: add vfp notes for arm
Andrew Jones [Mon, 11 Jan 2016 19:56:25 +0000 (20:56 +0100)]
target-arm: dump-guest-memory: add vfp notes for arm

gdb won't actually dump these with 'info all-registers' since
it first tries to confirm that it should by checking the VFP
hwcap in the .auxv note. Well, we don't generate an .auxv note.

Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1452542185-10914-9-git-send-email-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoelf: add arm note types
Andrew Jones [Mon, 11 Jan 2016 19:56:24 +0000 (20:56 +0100)]
elf: add arm note types

Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1452542185-10914-8-git-send-email-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agotarget-arm: dump-guest-memory: add prfpreg notes for aarch64
Andrew Jones [Mon, 11 Jan 2016 19:56:23 +0000 (20:56 +0100)]
target-arm: dump-guest-memory: add prfpreg notes for aarch64

Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1452542185-10914-7-git-send-email-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agotarget-arm: support QMP dump-guest-memory
Andrew Jones [Mon, 11 Jan 2016 19:56:22 +0000 (20:56 +0100)]
target-arm: support QMP dump-guest-memory

Add the support needed for creating prstatus elf notes. This
allows us to use QMP dump-guest-memory.

Signed-off-by: Andrew Jones <drjones@redhat.com>
Message-id: 1452542185-10914-6-git-send-email-drjones@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: moved setting of cpu::write_elf64_note inside !CONFIG_USER_ONLY
 ifdef to avoid compile failure for linux-user build]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agodump: allow target to set the physical base
Andrew Jones [Mon, 11 Jan 2016 19:56:21 +0000 (20:56 +0100)]
dump: allow target to set the physical base

crash assumes the physical base in the kdump subheader of
makedumpfile formatted dumps is correct. Zero is not correct
for all architectures, so allow it to be changed.

(No functional change.)

Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1452542185-10914-5-git-send-email-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agodump: allow target to set the page size
Andrew Jones [Mon, 11 Jan 2016 19:56:20 +0000 (20:56 +0100)]
dump: allow target to set the page size

This is necessary for targets that don't have TARGET_PAGE_SIZE ==
real-target-page-size. The target should set the page size to the
correct one, if known, or, if not known, to the maximum page size
it supports.

(No functional change.)

Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1452542185-10914-4-git-send-email-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agodump: qemunotes aren't commonly needed
Andrew Jones [Mon, 11 Jan 2016 19:56:19 +0000 (20:56 +0100)]
dump: qemunotes aren't commonly needed

Only one of three architectures implementing qmp-dump-guest-memory write
qemu notes. And, another architecture (arm/aarch64) is coming, which
won't use them either. Make the common implementation truly common.

(No functional change.)

Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1452542185-10914-3-git-send-email-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoqapi-schema: dump-guest-memory: Improve text
Andrew Jones [Mon, 11 Jan 2016 19:56:18 +0000 (20:56 +0100)]
qapi-schema: dump-guest-memory: Improve text

dump-guest-memory is supported by more than just x86, however
the paging option is not.

(No functional change.)

Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1452542185-10914-2-git-send-email-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoxlnx-zynqmp: Add support for high DDR memory regions
Alistair Francis [Tue, 12 Jan 2016 22:39:18 +0000 (14:39 -0800)]
xlnx-zynqmp: Add support for high DDR memory regions

The Xilinx ZynqMP SoC and EP108 board supports three memory regions:
 - A 2GB region starting at 0
 - A 32GB region starting at 32GB
 - A 256GB region starting at 768GB

This patch adds support for the first two memory regions, which is
automatically created based on the size specified by the QEMU memory
command line argument.

On hardware the physical memory region is one continuous region, it is then
mapped into the three different regions by the DDRC. As we don't model the
DDRC this is done at startup by QEMU. The board creates the memory region and
then passes that memory region to the SoC. The SoC then maps the memory
regions.

Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: a1e47db941d65733724a300fcd98b74fbeeaaf22.1452637205.git.alistair.francis@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agotarget-arm: Use the right MMU index in arm_regime_using_lpae_format
Alvise Rigo [Fri, 15 Jan 2016 10:37:42 +0000 (11:37 +0100)]
target-arm: Use the right MMU index in arm_regime_using_lpae_format

arm_regime_using_lpae_format checks whether the LPAE extension is used
for stage 1 translation regimes. MMU indexes not exclusively of a stage 1
regime won't work with this method.

In case of ARMMMUIdx_S12NSE0 or ARMMMUIdx_S12NSE1, offset these values
by ARMMMUIdx_S1NSE0 to get the right index indicating a stage 1
translation regime.

Rename also the function to arm_s1_regime_using_lpae_format and update
the comments to reflect the change.

Signed-off-by: Alvise Rigo <a.rigo@virtualopensystems.com>
Message-id: 1452854262-19550-1-git-send-email-a.rigo@virtualopensystems.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agodisas/libvixl: Really suppress gcc 4.6.3 sign-compare warnings
Peter Maydell [Thu, 14 Jan 2016 14:53:22 +0000 (14:53 +0000)]
disas/libvixl: Really suppress gcc 4.6.3 sign-compare warnings

Commit 8acc216b956 attempted to silence some sign-compare
warnings in libvixl by adding -Wno-sign-compare to the CFLAGS
for the relevant objects. Unfortunately it was ineffective
because it was placed before $(QEMU_CFLAGS), so the -Wall in
the general flags overrode -Wno-sign-compare rather than
vice-versa. Reorder the flags so the warning suppression works.

Thanks to Franz-Josef Haider <Franz-Josef.Haider@student.uibk.ac.at>
for pointing out what was wrong with the original patch.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 1452783202-576-1-git-send-email-peter.maydell@linaro.org

8 years agoMerge remote-tracking branch 'remotes/armbru/tags/pull-error-2016-01-13' into staging
Peter Maydell [Thu, 14 Jan 2016 13:07:38 +0000 (13:07 +0000)]
Merge remote-tracking branch 'remotes/armbru/tags/pull-error-2016-01-13' into staging

Error reporting patches for 2016-01-13

# gpg: Signature made Wed 13 Jan 2016 14:21:48 GMT using RSA key ID EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"

* remotes/armbru/tags/pull-error-2016-01-13: (41 commits)
  checkpatch: Detect newlines in error_report and other error functions
  error: Consistently name Error * objects err, and not errp
  s390/sclp: Simplify control flow in sclp_realize()
  hw/s390x: Rename local variables Error *l_err to just err
  error: Clean up errors with embedded newlines (again)
  vhdx: Fix "log that needs to be replayed" error message
  pci-assign: Clean up "Failed to assign" error messages
  vmdk: Clean up "Invalid extent lines" error message
  vmdk: Clean up control flow in vmdk_parse_extents() a bit
  error: Strip trailing '\n' from error string arguments (again)
  qemu-io qemu-nbd: Use error_report() etc. instead of fprintf()
  migration: Use error_reportf_err() instead of monitor_printf()
  spapr: Use error_reportf_err()
  error: Use error_prepend() where it makes obvious sense
  error: Use error_reportf_err() where it makes obvious sense
  error: Don't decorate original error message when adding to it
  error: New error_prepend(), error_reportf_err()
  test-throttle: Simplify qemu_init_main_loop() error handling
  qemu-nbd: Clean up "Failed to load snapshot" error message
  block: Clean up "Could not create temporary overlay" error message
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/cohuck/tags/s390x-20160113' into staging
Peter Maydell [Thu, 14 Jan 2016 12:42:08 +0000 (12:42 +0000)]
Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20160113' into staging

This first round of s390x patches includes:
- new compat machine
- remove the old s390-virtio machine
- fixes and some cleanup

# gpg: Signature made Wed 13 Jan 2016 14:55:55 GMT using RSA key ID C6F02FAF
# gpg: Good signature from "Cornelia Huck <huckc@linux.vnet.ibm.com>"
# gpg:                 aka "Cornelia Huck <cornelia.huck@de.ibm.com>"

* remotes/cohuck/tags/s390x-20160113:
  s390x/pci: return real state during listing PCI
  virtio-ccw: fix sanity check for vector
  s390: Introduce CCW_COMPAT_2_5
  s390x/virtio: use qemu_check_nic_model()
  s390x/pci: code cleanup
  s390x/pci: reject some operations to disabled PCI function
  s390x: remove s390-virtio devices
  s390x: remove s390-virtio machine
  s390x: add 2.6 compat machine

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/amit/tags/vs-for-2.6-1' into staging
Peter Maydell [Thu, 14 Jan 2016 11:16:50 +0000 (11:16 +0000)]
Merge remote-tracking branch 'remotes/amit/tags/vs-for-2.6-1' into staging

small change to qom'ify virtio-serial

# gpg: Signature made Wed 13 Jan 2016 09:51:18 GMT using RSA key ID 854083B6
# gpg: Good signature from "Amit Shah <amit@amitshah.net>"
# gpg:                 aka "Amit Shah <amit@kernel.org>"
# gpg:                 aka "Amit Shah <amitshah@gmx.net>"

* remotes/amit/tags/vs-for-2.6-1:
  virtio serial port: fix to incomplete QOMify

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/amit-migration/tags/migration-for-2.6-1' into...
Peter Maydell [Thu, 14 Jan 2016 10:25:33 +0000 (10:25 +0000)]
Merge remote-tracking branch 'remotes/amit-migration/tags/migration-for-2.6-1' into staging

migration fixes for postcopy, xbzrle, multithread decompression

# gpg: Signature made Wed 13 Jan 2016 10:34:49 GMT using RSA key ID 854083B6
# gpg: Good signature from "Amit Shah <amit@amitshah.net>"
# gpg:                 aka "Amit Shah <amit@kernel.org>"
# gpg:                 aka "Amit Shah <amitshah@gmx.net>"

* remotes/amit-migration/tags/migration-for-2.6-1:
  multithread decompression: Avoid one copy
  Use qemu_get_buffer_in_place for xbzrle data
  Migration: Emit event at start of pass
  Postcopy: Send events/change state on incoming side
  migration: Add state records for migration incoming
  migration: Export migrate_set_state()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agocheckpatch: Detect newlines in error_report and other error functions
Jason J. Herne [Fri, 11 Dec 2015 18:30:42 +0000 (13:30 -0500)]
checkpatch: Detect newlines in error_report and other error functions

We don't want newlines embedded in error messages. This seems to be a common
problem with new code so let's try to catch it with checkpatch.

This will not catch cases where newlines are inserted into the middle of an
existing multi-line statement. But those cases should be rare.

Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Message-Id: <1449858642-24267-1-git-send-email-jjherne@linux.vnet.ibm.com>
[Rephrased "Error function text" to "Error messages", dropped
error_vprintf, error_printf, error_printf from $qemu_error_funcs,
because they may legitimately print newlines]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
8 years agoerror: Consistently name Error * objects err, and not errp
Markus Armbruster [Fri, 18 Dec 2015 15:35:27 +0000 (16:35 +0100)]
error: Consistently name Error * objects err, and not errp

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1450452927-8346-25-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
8 years agos390/sclp: Simplify control flow in sclp_realize()
Markus Armbruster [Fri, 18 Dec 2015 15:35:26 +0000 (16:35 +0100)]
s390/sclp: Simplify control flow in sclp_realize()

Suggested-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1450452927-8346-24-git-send-email-armbru@redhat.com>

8 years agohw/s390x: Rename local variables Error *l_err to just err
Markus Armbruster [Fri, 18 Dec 2015 15:35:25 +0000 (16:35 +0100)]
hw/s390x: Rename local variables Error *l_err to just err

Let's follow established naming practice here as well.

Cc: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1450452927-8346-23-git-send-email-armbru@redhat.com>

8 years agoerror: Clean up errors with embedded newlines (again)
Markus Armbruster [Fri, 18 Dec 2015 15:35:24 +0000 (16:35 +0100)]
error: Clean up errors with embedded newlines (again)

The arguments of error_report() should yield a short error string
without newlines.

A few places try to print additional help after the error message by
embedding newlines in the error string.  That's nice, but let's do it
the right way.  Commit 474c213 cleaned up some, but they keep coming
back.  Offenders tracked down with the Coccinelle semantic patch from
commit 312fd5f.

Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Pavel Fedin <p.fedin@samsung.com>
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
8 years agovhdx: Fix "log that needs to be replayed" error message
Markus Armbruster [Fri, 18 Dec 2015 15:35:23 +0000 (16:35 +0100)]
vhdx: Fix "log that needs to be replayed" error message

The arguments of error_setg_errno() should yield a short error string
without newlines.

Here, we try to append additional help to the error message by
embedding newlines in the error string.  That's nice, but it's doesn't
play nicely with the errno part.  tests/qemu-iotests/070.out shows the
resulting mess:

    can't open device TEST_DIR/iotest-dirtylog-10G-4M.vhdx: VHDX image file 'TEST_DIR/iotest-dirtylog-10G-4M.vhdx' opened read-only, but contains a log that needs to be replayed.  To replay the log, execute:
     qemu-img check -r all 'TEST_DIR/iotest-dirtylog-10G-4M.vhdx': Operation not permitted

Switch to error_setg() and error_append_hint().  Result:

    can't open device TEST_DIR/iotest-dirtylog-10G-4M.vhdx: VHDX image file 'TEST_DIR/iotest-dirtylog-10G-4M.vhdx' opened read-only, but contains a log that needs to be replayed
    To replay the log, run:
    qemu-img check -r all 'TEST_DIR/iotest-dirtylog-10G-4M.vhdx'

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1450452927-8346-21-git-send-email-armbru@redhat.com>

8 years agopci-assign: Clean up "Failed to assign" error messages
Markus Armbruster [Fri, 18 Dec 2015 15:35:22 +0000 (16:35 +0100)]
pci-assign: Clean up "Failed to assign" error messages

The arguments of error_setg() & friends should yield a short error
string without newlines.

Two places try to append additional help to the error message by
embedding newlines in the error string.  That's nice, but let's do it
the right way, with error_append_hint().

Cc: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1450452927-8346-20-git-send-email-armbru@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
8 years agovmdk: Clean up "Invalid extent lines" error message
Markus Armbruster [Fri, 18 Dec 2015 15:35:21 +0000 (16:35 +0100)]
vmdk: Clean up "Invalid extent lines" error message

vmdk_parse_extents() reports parse errors like this:

    error_setg(errp, "Invalid extent lines:\n%s", p);

where p points to the beginning of the malformed line in the image
descriptor.  This results in a multi-line error message

    Invalid extent lines:
    <first line that doesn't parse>
    <remaining text that may or may not parse, if any>

Error messages should not have newlines embedded.  Since the remaining
text is not helpful, we can simply report:

    Invalid extent line: <first line that doesn't parse>

Cc: Fam Zheng <famz@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1450452927-8346-19-git-send-email-armbru@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
8 years agovmdk: Clean up control flow in vmdk_parse_extents() a bit
Markus Armbruster [Fri, 18 Dec 2015 15:35:20 +0000 (16:35 +0100)]
vmdk: Clean up control flow in vmdk_parse_extents() a bit

Factor out loop stepping to turn a while-loop with goto into a
for-loop with continue.

Cc: Fam Zheng <famz@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-Id: <1450452927-8346-18-git-send-email-armbru@redhat.com>

8 years agoerror: Strip trailing '\n' from error string arguments (again)
Markus Armbruster [Fri, 18 Dec 2015 15:35:19 +0000 (16:35 +0100)]
error: Strip trailing '\n' from error string arguments (again)

Commit 6daf194dbe62a2eb and 312fd5f got rid of a bunch, but they
keep coming back.  Tracked down with the Coccinelle semantic patch
from commit 312fd5f.

Cc: Fam Zheng <famz@redhat.com>
Cc: Peter Crosthwaite <crosthwaitepeter@gmail.com>
Cc: Bharata B Rao <bharata@linux.vnet.ibm.com>
Cc: Dominik Dingel <dingel@linux.vnet.ibm.com>
Cc: David Hildenbrand <dahi@linux.vnet.ibm.com>
Cc: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Cc: Stefan Berger <stefanb@linux.vnet.ibm.com>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Changchun Ouyang <changchun.ouyang@intel.com>
Cc: zhanghailiang <zhang.zhanghailiang@huawei.com>
Cc: Pavel Fedin <p.fedin@samsung.com>
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Acked-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Acked-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1450452927-8346-17-git-send-email-armbru@redhat.com>

8 years agoqemu-io qemu-nbd: Use error_report() etc. instead of fprintf()
Markus Armbruster [Fri, 18 Dec 2015 15:35:18 +0000 (16:35 +0100)]
qemu-io qemu-nbd: Use error_report() etc. instead of fprintf()

Just three instances left.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1450452927-8346-16-git-send-email-armbru@redhat.com>

8 years agomigration: Use error_reportf_err() instead of monitor_printf()
Markus Armbruster [Fri, 18 Dec 2015 15:35:17 +0000 (16:35 +0100)]
migration: Use error_reportf_err() instead of monitor_printf()

Both error_reportf_err() and monitor_printf() print to the same
destination when monitor_printf() is used correctly, i.e. within an
HMP monitor.  Elsewhere, monitor_printf() does nothing, while
error_reportf_err() reports to stderr.

Both changed functions are HMP command handlers.  These should only
run within an HMP monitor.

Unlike monitor_printf(), error_reportf_err() uses the error whole
instead of just its message obtained with error_get_pretty().  This
avoids suppressing its hint (see commit 50b7b00), but I don't think
the errors touched in this commit can come with hints.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1450452927-8346-15-git-send-email-armbru@redhat.com>

8 years agospapr: Use error_reportf_err()
Markus Armbruster [Fri, 18 Dec 2015 15:35:16 +0000 (16:35 +0100)]
spapr: Use error_reportf_err()

Not caught by Coccinelle, because we report the error only
conditionally here.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1450452927-8346-14-git-send-email-armbru@redhat.com>

8 years agoerror: Use error_prepend() where it makes obvious sense
Markus Armbruster [Fri, 18 Dec 2015 15:35:15 +0000 (16:35 +0100)]
error: Use error_prepend() where it makes obvious sense

Done with this Coccinelle semantic patch

    @@
    expression FMT, E1, E2;
    expression list ARGS;
    @@
    -    error_setg(E1, FMT, ARGS, error_get_pretty(E2));
    +    error_propagate(E1, E2);/*###*/
    +    error_prepend(E1, FMT/*@@@*/, ARGS);

followed by manual cleanup, first because I can't figure out how to
make Coccinelle transform strings, and second to get rid of now
superfluous error_propagate().

We now use or propagate the original error whole instead of just its
message obtained with error_get_pretty().  This avoids suppressing its
hint (see commit 50b7b00), but I can't see how the errors touched in
this commit could come with hints.  It also improves the message
printed with &error_abort when we screw up (see commit 1e9b65b).

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
8 years agoerror: Use error_reportf_err() where it makes obvious sense
Markus Armbruster [Fri, 18 Dec 2015 15:35:14 +0000 (16:35 +0100)]
error: Use error_reportf_err() where it makes obvious sense

Done with this Coccinelle semantic patch

    @@
    expression FMT, E, S;
    expression list ARGS;
    @@
    -    error_report(FMT, ARGS, error_get_pretty(E));
    +    error_reportf_err(E, FMT/*@@@*/, ARGS);
    (
    -    error_free(E);
    |
 exit(S);
    |
 abort();
    )

followed by a replace of '%s"/*@@@*/' by '"' and some line rewrapping,
because I can't figure out how to make Coccinelle transform strings.

We now use the error whole instead of just its message obtained with
error_get_pretty().  This avoids suppressing its hint (see commit
50b7b00), but I can't see how the errors touched in this commit could
come with hints.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1450452927-8346-12-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
8 years agoerror: Don't decorate original error message when adding to it
Markus Armbruster [Fri, 18 Dec 2015 15:35:13 +0000 (16:35 +0100)]
error: Don't decorate original error message when adding to it

Prepend the additional information, colon, space to the original
message without enclosing it in parenthesis or quotes, like we do
elsewhere.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1450452927-8346-11-git-send-email-armbru@redhat.com>

8 years agoerror: New error_prepend(), error_reportf_err()
Markus Armbruster [Fri, 18 Dec 2015 15:35:12 +0000 (16:35 +0100)]
error: New error_prepend(), error_reportf_err()

Instead of simply propagating an error verbatim, we sometimes want to
add to its message, like this:

    frobnicate(arg, &err);
    error_setg(errp, "Can't frobnicate %s: %s",
                     arg, error_get_pretty(err));
    error_free(err);

This is suboptimal, because it loses err's hint (if any).  Moreover,
when errp is &error_abort or is subsequently propagated to
&error_abort, the abort message points to the place where we last
added to the error, not to the place where it originated.

To avoid these issues, provide means to add to an error's message in
place:

    frobnicate(arg, errp);
    error_prepend(errp, "Can't frobnicate %s: ", arg);

Likewise, reporting an error like

    frobnicate(arg, &err);
    error_report("Can't frobnicate %s: %s", arg, error_get_pretty(err));

can lose err's hint.  To avoid:

    error_reportf_err(err, "Can't frobnicate %s: ", arg);

The next commits will put these functions to use.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1450452927-8346-10-git-send-email-armbru@redhat.com>

8 years agotest-throttle: Simplify qemu_init_main_loop() error handling
Markus Armbruster [Fri, 18 Dec 2015 15:35:11 +0000 (16:35 +0100)]
test-throttle: Simplify qemu_init_main_loop() error handling

The code looks like it tries to check for both qemu_init_main_loop()
and qemu_get_aio_context() failure in one conditional.  In fact,
qemu_get_aio_context() can fail only after qemu_init_main_loop()
failed.

Simplify accordingly: check for qemu_init_main_loop() error directly,
without bothering to improve its error message.  Call
qemu_get_aio_context() only when qemu_get_aio_context() succeeded.  It
can't fail then, so no need to check.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1450452927-8346-9-git-send-email-armbru@redhat.com>

8 years agoqemu-nbd: Clean up "Failed to load snapshot" error message
Markus Armbruster [Fri, 18 Dec 2015 15:35:10 +0000 (16:35 +0100)]
qemu-nbd: Clean up "Failed to load snapshot" error message

bdrv_snapshot_load_tmp() sets an error and returns -errno on failure.
We report both even though the error message is self-contained.  Drop
the redundant strerror().

While there: setting errno right before exit() is pointless, so drop
that, too.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1450452927-8346-8-git-send-email-armbru@redhat.com>

8 years agoblock: Clean up "Could not create temporary overlay" error message
Markus Armbruster [Fri, 18 Dec 2015 15:35:09 +0000 (16:35 +0100)]
block: Clean up "Could not create temporary overlay" error message

bdrv_create() sets an error and returns -errno on failure.  When the
latter is interesting, the error is created with error_setg_errno().

bdrv_append_temp_snapshot() uses the error's message to create a new
one with error_setg_errno().  This adds a strerror() that is either
uninteresting or duplicate.  Use error_setg() instead.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1450452927-8346-7-git-send-email-armbru@redhat.com>

8 years agoerror: Improve documentation
Markus Armbruster [Fri, 18 Dec 2015 15:35:08 +0000 (16:35 +0100)]
error: Improve documentation

While there, tighten error_append_hint()'s assertion.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1450452927-8346-6-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
8 years agoerror: Use error_report_err() instead of ad hoc prints
Markus Armbruster [Fri, 18 Dec 2015 15:35:07 +0000 (16:35 +0100)]
error: Use error_report_err() instead of ad hoc prints

Unlike ad hoc prints, error_report_err() uses the error whole instead
of just its message obtained with error_get_pretty().  This avoids
suppressing its hint (see commit 50b7b00).  Example:

    $ bld/ivshmem-server -l 42@
    Parameter 'shm_size' expects a size
    You may use k, M, G or T suffixes for kilobytes, megabytes, gigabytes and terabytes.

The last line is new with this patch.

While there, drop a "cannot parse shm size: " message prefix; it's
redundant, because the error message proper is always of the form
"Parameter 'shm_size' expects ...".

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1450452927-8346-5-git-send-email-armbru@redhat.com>

8 years agoerror: Use error_report_err() instead of monitor_printf()
Markus Armbruster [Fri, 18 Dec 2015 15:35:06 +0000 (16:35 +0100)]
error: Use error_report_err() instead of monitor_printf()

Both error_report_err() and monitor_printf() print to the same
destination when monitor_printf() is used correctly, i.e. within an
HMP monitor.  Elsewhere, monitor_printf() does nothing, while
error_report_err() reports to stderr.

Most changed functions are HMP command handlers.  These should only
run within an HMP monitor.  The one exception is bdrv_password_cb(),
which should also only run within an HMP monitor.

Four command handlers prefix the error message with the command name:
balloon, migrate_set_capability, migrate_set_parameter, migrate.
Pointless, drop.

Unlike monitor_printf(), error_report_err() uses the error whole
instead of just its message obtained with error_get_pretty().  This
avoids suppressing its hint (see commit 50b7b00).  Example:

    (qemu) device_add ivshmem,id=666
    Parameter 'id' expects an identifier
    Identifiers consist of letters, digits, '-', '.', '_', starting with a letter.
    Try "help device_add" for more information

The "Identifiers consist of..." line is new with this patch.

Coccinelle semantic patch:

    @@
    expression M, E;
    @@
    -    monitor_printf(M, "%s\n", error_get_pretty(E));
    -    error_free(E);
    +    error_report_err(E);
    @r1@
    expression M, E;
    format F;
    position p;
    @@
    -    monitor_printf(M, "...%@F@\n", error_get_pretty(E));@p
    -    error_free(E);
    +    error_report_err(E);
    @script:python@
p << r1.p;
    @@
    print "%s:%s:%s: prefix dropped" % (p[0].file, p[0].line, p[0].column)

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1450452927-8346-4-git-send-email-armbru@redhat.com>

8 years agoerror: Use error_report_err() where appropriate (again)
Markus Armbruster [Fri, 18 Dec 2015 15:35:05 +0000 (16:35 +0100)]
error: Use error_report_err() where appropriate (again)

Same Coccinelle semantic patch as in commit 565f65d.

We now use the original error whole instead of just its message
obtained with error_get_pretty().  This avoids suppressing its hint
(see commit 50b7b00), but I don't think the errors touched in this
commit can come with hints.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1450452927-8346-3-git-send-email-armbru@redhat.com>

8 years agoqemu-nbd: Replace BSDism <err.h> by error_report()
Markus Armbruster [Fri, 18 Dec 2015 15:35:04 +0000 (16:35 +0100)]
qemu-nbd: Replace BSDism <err.h> by error_report()

Coccinelle semantic patch

    @@
    expression E;
    expression list ARGS;
    @@
    -       errx(E, ARGS);
    +       error_report(ARGS);
    +       exit(E);
    @@
    expression E, FMT;
    expression list ARGS;
    @@
    -       err(E, FMT, ARGS);
    +       error_report(FMT /*": %s"*/, ARGS, strerror(errno));
    +       exit(E);

followed by a replace of '"/*": %s"*/' by ' : %s"', because I can't
figure out how to make Coccinelle transform strings.

A few of the error messages touched have trailing newlines.  They'll
be stripped later in this series.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1450452927-8346-2-git-send-email-armbru@redhat.com>

8 years agoxen-hvm: Mark inappropriate error handling FIXME
Markus Armbruster [Thu, 17 Dec 2015 16:35:21 +0000 (17:35 +0100)]
xen-hvm: Mark inappropriate error handling FIXME

Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: xen-devel@lists.xensource.com
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1450370121-5768-14-git-send-email-armbru@redhat.com>

8 years agoaudio: Clean up inappropriate and unreachable use of hw_error()
Markus Armbruster [Thu, 17 Dec 2015 16:35:20 +0000 (17:35 +0100)]
audio: Clean up inappropriate and unreachable use of hw_error()

audio_init() should not use hw_error(), because dumping CPU registers
is unhelpful there, and aborting is wrong, because it can be called
called from an audio device's realize() method.

The two uses of hw_error() come from commit 0d9acba:

* When qemu_new_timer() fails.  It couldn't fail back then, and it
  can't fail now.  Drop the unreachable error handling.

* When no_audio_driver can't be initialized.  It couldn't fail back
  then, and it can't fail now.  Replace the error handling by an
  assertion.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
8 years agoisa: Clean up inappropriate hw_error()
Markus Armbruster [Thu, 17 Dec 2015 12:19:53 +0000 (13:19 +0100)]
isa: Clean up inappropriate hw_error()

isa_bus_irqs(), isa_create() and isa_try_create() call hw_error() when
passed a null bus.  Use of hw_error() has always been questionable,
because these are used only during machine initialization, and
printing CPU registers isn't useful there.

Since the previous commit, passing a null bus is a programming error.
Drop the hw_error() and simply let it crash.

Cc: Richard Henderson <rth@twiddle.net>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: "Hervé Poussineau" <hpoussin@reactos.org>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
Reviewed-by: Hervé Poussineau <hpoussin@reactos.org>
Message-Id: <1450354795-31608-12-git-send-email-armbru@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
8 years agoisa: Clean up error handling around isa_bus_new()
Markus Armbruster [Thu, 17 Dec 2015 16:35:18 +0000 (17:35 +0100)]
isa: Clean up error handling around isa_bus_new()

We can have at most one ISA bus.  If you try to create another one,
isa_bus_new() complains to stderr and returns null.

isa_bus_new() is called in two contexts, machine's init() and device's
realize() methods.  Since complaining to stderr is not proper in the
latter context, convert isa_bus_new() to Error.

Machine's init():

* mips_jazz_init(), called from the init() methods of machines
  "magnum" and "pica"

* mips_r4k_init(), the init() method of machine "mips"

* pc_init1() called from the init() methods of non-q35 PC machines

* typhoon_init(), called from clipper_init(), the init() method of
  machine "clipper"

These callers always create the first ISA bus, hence isa_bus_new()
can't fail.  Simply pass &error_abort.

Device's realize():

* i82378_realize(), of PCI device "i82378"

* ich9_lpc_realize(), of PCI device "ICH9-LPC"

* pci_ebus_realize(), of PCI device "ebus"

* piix3_realize(), of PCI device "pci-piix3", abstract parent of
  "PIIX3" and "PIIX3-xen"

* piix4_realize(), of PCI device "PIIX4"

* vt82c686b_realize(), of PCI device "VT82C686B"

Propagate the error.  Note that these devices are typically created
only by machine init() methods with qdev_init_nofail() or similar.  If
we screwed up and created an ISA bus before that call, we now give up
right away.  Before, we'd hobble on, and typically die in
isa_bus_irqs().  Similar if someone finds a way to hot-plug one of
these critters.

Cc: Richard Henderson <rth@twiddle.net>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: "Hervé Poussineau" <hpoussin@reactos.org>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <1450370121-5768-11-git-send-email-armbru@redhat.com>

8 years agoisa: Trivially convert remaining PCI-ISA bridges to realize()
Markus Armbruster [Thu, 17 Dec 2015 16:35:17 +0000 (17:35 +0100)]
isa: Trivially convert remaining PCI-ISA bridges to realize()

These are "ICH9-LPC" and "ebus".

Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <1450370121-5768-10-git-send-email-armbru@redhat.com>

8 years agosysbus: Don't use hw_error() in machine_init_done_notifiers
Markus Armbruster [Thu, 17 Dec 2015 16:35:16 +0000 (17:35 +0100)]
sysbus: Don't use hw_error() in machine_init_done_notifiers

platform_bus_map_irq() and platform_bus_map_mmio() use hw_error() to
fail.  They run in machine_init_done_notifiers, via
platform_bus_init_notify() and link_sysbus_device().  Printing CPU
registers is not helpful there.

Replace hw_error() by error_report(); exit(1).  If these are
programming errors, it should be replaced by an assertion instead.

While there, observe that both functions always return 0, and
link_sysbus_device() ignores the return value.  Change them to void.

Cc: Alexander Graf <agraf@suse.de>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1450370121-5768-9-git-send-email-armbru@redhat.com>

8 years agohw/arm/virt: Fix property "gic-version" error handling
Markus Armbruster [Thu, 17 Dec 2015 16:35:15 +0000 (17:35 +0100)]
hw/arm/virt: Fix property "gic-version" error handling

virt_set_gic_version() calls exit(1) when passed an invalid property
value.  Property setters are not supposed to do that.  Screwed up in
commit b92ad39.  Harmless, because the property belongs to a machine.
Set an error object instead.

Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-arm@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoerror: Don't append a newline when printing the error hint
Markus Armbruster [Thu, 17 Dec 2015 16:35:14 +0000 (17:35 +0100)]
error: Don't append a newline when printing the error hint

Since commit 50b7b00, we have error_append_hint() to conveniently
accumulate Error member @hint.  error_report_err() prints it with a
newline appended.  Consequently, users of error_append_hint() need to
know whether theirs is the final line of the hint to decide whether it
needs a newline.  Not a nice interface.

Change error_report_err() to print just the hint, and the (still few)
users of error_append_hint() to add the required newline.

Cc: Eric Blake <eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1450370121-5768-7-git-send-email-armbru@redhat.com>

8 years agoraven: Mark use of hw_error() in realize() FIXME
Markus Armbruster [Thu, 17 Dec 2015 16:35:13 +0000 (17:35 +0100)]
raven: Mark use of hw_error() in realize() FIXME

Device realize() methods aren't supposed to call hw_error(), they
should set an error and fail cleanly.  Blindly doing that would be
easy enough, but then realize() would fail without undoing its side
effects.  Just mark it FIXME for now.

Cc: "Andreas Färber" <andreas.faerber@web.de>
Cc: qemu-ppc@nongnu.org
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1450370121-5768-6-git-send-email-armbru@redhat.com>

8 years agoetraxfs_eth: Don't use hw_error() in init() method
Markus Armbruster [Thu, 17 Dec 2015 16:35:12 +0000 (17:35 +0100)]
etraxfs_eth: Don't use hw_error() in init() method

Device init() methods aren't supposed to call hw_error(), they should
report the error and fail cleanly.  Do that.

Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-Id: <1450370121-5768-5-git-send-email-armbru@redhat.com>

8 years agoarm_mptimer: Don't use hw_error() in realize() method
Markus Armbruster [Thu, 17 Dec 2015 16:35:11 +0000 (17:35 +0100)]
arm_mptimer: Don't use hw_error() in realize() method

Device realize() methods aren't supposed to call hw_error(), they
should set an error and fail cleanly.  Do that.

Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-arm@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <1450370121-5768-4-git-send-email-armbru@redhat.com>

8 years agoomap: Don't use hw_error() in device init() methods
Markus Armbruster [Thu, 17 Dec 2015 16:35:10 +0000 (17:35 +0100)]
omap: Don't use hw_error() in device init() methods

Device init() methods aren't supposed to call hw_error(), they should
report the error and fail cleanly.  Do that.

The errors are all device misconfiguration.  All callers use
qdev_init_nofail(), so this patch merely converts hw_error() crashes
into &error_abort crashes.  Improvement, because now it crashes closer
to where the misconfiguration bug would be, and a few more bad
examples of hw_error() use are gone.

Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <1450370121-5768-3-git-send-email-armbru@redhat.com>

8 years agohw: Don't use hw_error() for machine initialization errors
Markus Armbruster [Thu, 17 Dec 2015 16:35:09 +0000 (17:35 +0100)]
hw: Don't use hw_error() for machine initialization errors

Printing CPU registers is not helpful during machine initialization.
Moreover, these are straightforward configuration or "can get
resources" errors, so dumping core isn't appropriate either.  Replace
hw_error() by error_report(); exit(1).  Matches how we report these
errors in other machine initializations.

Cc: Richard Henderson <rth@twiddle.net>
Cc: qemu-arm@nongnu.org
Cc: qemu-ppc@nongnu.org
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1450370121-5768-2-git-send-email-armbru@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
8 years agohw: Inline the qdev_prop_set_drive_nofail() wrapper
Markus Armbruster [Thu, 10 Dec 2015 16:29:15 +0000 (17:29 +0100)]
hw: Inline the qdev_prop_set_drive_nofail() wrapper

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1449764955-10741-3-git-send-email-armbru@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoUse error_fatal to simplify obvious fatal errors
Markus Armbruster [Fri, 11 Sep 2015 13:04:45 +0000 (15:04 +0200)]
Use error_fatal to simplify obvious fatal errors

Done with this Coccinelle semantic patch:

    @@
    type T;
    identifier FUN, RET;
    expression list ARGS;
    expression ERR, EC;
    @@
    (
    -    T RET = FUN(ARGS, &ERR);
    +    T RET = FUN(ARGS, &error_fatal);
    |
    -    RET = FUN(ARGS, &ERR);
    +    RET = FUN(ARGS, &error_fatal);
    |
    -    FUN(ARGS, &ERR);
    +    FUN(ARGS, &error_fatal);
    )
    -    if (ERR != NULL) {
    -        error_report_err(ERR);
    -        exit(EC);
    -    }

This is actually a more elegant version of my initial semantic patch
by courtesy of Eduardo.

It leaves dead Error * variables behind, cleaned up manually.

Cc: qemu-arm@nongnu.org
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agoerror: Document how to accumulate multiple errors
Markus Armbruster [Tue, 17 Nov 2015 16:05:49 +0000 (17:05 +0100)]
error: Document how to accumulate multiple errors

Suggested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1447776349-2344-1-git-send-email-armbru@redhat.com>

8 years agomultithread decompression: Avoid one copy
Dr. David Alan Gilbert [Wed, 16 Dec 2015 11:47:38 +0000 (11:47 +0000)]
multithread decompression: Avoid one copy

qemu_get_buffer does a copy, we can avoid the memcpy, and
we can then remove the extra buffer.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Liang Li <liang.z.li@intel.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Message-Id: <1450266458-3178-7-git-send-email-dgilbert@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
8 years agoUse qemu_get_buffer_in_place for xbzrle data
Dr. David Alan Gilbert [Wed, 16 Dec 2015 11:47:37 +0000 (11:47 +0000)]
Use qemu_get_buffer_in_place for xbzrle data

Avoid a data copy (if we're lucky) in the xbzrle code.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Message-Id: <1450266458-3178-6-git-send-email-dgilbert@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
8 years agoMigration: Emit event at start of pass
Dr. David Alan Gilbert [Wed, 16 Dec 2015 11:47:36 +0000 (11:47 +0000)]
Migration: Emit event at start of pass

Emit an event each time we sync the dirty bitmap on the source;
this helps libvirt use postcopy by giving it a kick when it
might be a good idea to start the postcopy.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Message-Id: <1450266458-3178-5-git-send-email-dgilbert@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
8 years agoPostcopy: Send events/change state on incoming side
Dr. David Alan Gilbert [Wed, 16 Dec 2015 11:47:35 +0000 (11:47 +0000)]
Postcopy: Send events/change state on incoming side

I missed the calls to send migration events on the destination side
as we enter postcopy.
Take care when adding them not to do it after state has been freed.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Message-Id: <1450266458-3178-4-git-send-email-dgilbert@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
8 years agomigration: Add state records for migration incoming
zhanghailiang [Wed, 16 Dec 2015 11:47:34 +0000 (11:47 +0000)]
migration: Add state records for migration incoming

For migration destination, we also need to know its state,
we will use it in COLO.

Here we add a new member 'state' for MigrationIncomingState,
and also use migrate_set_state() to modify its value.

Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
dgilbert: Fixed early free of MigraitonIncomingState
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Message-Id: <1450266458-3178-3-git-send-email-dgilbert@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
8 years agomigration: Export migrate_set_state()
zhanghailiang [Wed, 16 Dec 2015 11:47:33 +0000 (11:47 +0000)]
migration: Export migrate_set_state()

Change the first parameter of migrate_set_state(), and export it.
We will use it in a later patch to update incoming state.

Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
dgilbert: Updated comment as per Juan's review
Message-Id: <1450266458-3178-2-git-send-email-dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
8 years agos390x/pci: return real state during listing PCI
Yi Min Zhao [Wed, 16 Dec 2015 09:36:31 +0000 (17:36 +0800)]
s390x/pci: return real state during listing PCI

At present, list_pci() shows all PCI devices as being in configured
state. As devices can be deconfigured by the guest, we need to show
the real configuration status instead.

Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
8 years agovirtio-ccw: fix sanity check for vector
Halil Pasic [Mon, 7 Dec 2015 14:21:46 +0000 (15:21 +0100)]
virtio-ccw: fix sanity check for vector

The commit 8dfbaa6ac ("virtio-ccw: introduce ccw specific queue limit")
did not touch the sanity check for the vector argument of the method
virtio_ccw_notify, despite intended as seen from
https://lists.nongnu.org/archive/html/qemu-devel/2015-04/msg02705.html
To be able to scale number of virtqueues using the constant this sanity
check needs to be altered.

Fixes: 8dfbaa6ac ("virtio-ccw: introduce ccw specific queue limit")
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
8 years agos390: Introduce CCW_COMPAT_2_5
Shmulik Ladkani [Wed, 23 Dec 2015 19:42:11 +0000 (21:42 +0200)]
s390: Introduce CCW_COMPAT_2_5

In 240240d5 'pc: Add pc-*-2.6 machine classes' HW_COMPAT_2_5 and
PC_COMPAT_2_5 were introduced.

Accordingly, introduce CCW_COMPAT_2_5 that uses HW_COMPAT_2_5.

Signed-off-by: Shmulik Ladkani <shmulik.ladkani@ravellosystems.com>
Message-Id: <1450899731-19517-1-git-send-email-shmulik.ladkani@ravellosystems.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
8 years agos390x/virtio: use qemu_check_nic_model()
Cornelia Huck [Tue, 15 Dec 2015 16:49:15 +0000 (17:49 +0100)]
s390x/virtio: use qemu_check_nic_model()

Switching to the generally used interface changes the output of

s390x-softmmu/qemu-system-s390x -net nic,model=?

from

S390 only supports VirtIO nics

to the rather more useful

qemu: Supported NIC models: virtio

while still giving us a sensible error message for unsupported
models:

s390x-softmmu/qemu-system-s390x -net nic,model=foo
qemu-system-s390x: Unsupported NIC model: foo

Acked-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
8 years agos390x/pci: code cleanup
Yi Min Zhao [Mon, 14 Dec 2015 08:52:28 +0000 (16:52 +0800)]
s390x/pci: code cleanup

Make use of the new FH_ENABLED define in existing code.

Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
8 years agos390x/pci: reject some operations to disabled PCI function
Yi Min Zhao [Mon, 14 Dec 2015 08:50:44 +0000 (16:50 +0800)]
s390x/pci: reject some operations to disabled PCI function

According to the s390 architecture, any mpcifc, pcilg, pcistg,
pcistb and rpcit instructions issued to disabled PCI functions
are rejected, and the instruction completes by setting condition
code 3. In addition, any DMA and MSIX interruption operations
are ignored.

Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
8 years agos390x: remove s390-virtio devices
Pierre Morel [Mon, 30 Nov 2015 15:49:58 +0000 (16:49 +0100)]
s390x: remove s390-virtio devices

The s390-virtio machine has been removed; remove the associated devices
as well.

hw/s390x/s390-virtio-bus.c and hw/s390x/s390-virtio-bus.h
have been deleted and removed from hw/s390x/Makefile.objs

virtio-size has no more meaning for the modern machine
and has been removed from helper.c and cpu.h

virtio-serial-s390 belonging to the old machine is
being removed from vl.c

Signed-off-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
8 years agos390x: remove s390-virtio machine
Pierre Morel [Mon, 14 Dec 2015 13:55:44 +0000 (14:55 +0100)]
s390x: remove s390-virtio machine

Remove machine code for the s390-virtio machine, but keep functions
useful for the ccw machine.

Signed-off-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>