Fix cpuid leaf 0x0d which incorrectly parsed eax and ebx.

However, before this patch the CPUID worked fine -- the .offset
field contained the size _and_ was stored in the register that
is supposed to hold the size (eax), and likewise the .size field
contained the offset _and_ was stored in the register trhat is
supposed to hold the offset (ebx).
Signed-off-by: NLiu Jinsong <jinsong.liu@intel.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

v4: s/fail/failed/  (Peter Maydell)
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>

KVM reports the number of available memory slots (KVM_CAP_NR_MEMSLOTS)
using the extension interface.  Both x86 and s390 implement this, ARM
and powerpc do not yet enable it.  Convert the static slots array to
be dynamically allocated, supporting more slots when available.
Default to 32 when KVM_CAP_NR_MEMSLOTS is not implemented.  The
motivation for this change is to support more assigned devices, where
memory mapped PCI MMIO BARs typically take one slot each.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>
Reviewed-by: NThomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

When an assigned device is initialized it copies the device config
space into the emulated config space.  Unfortunately multifunction is
setup prior to the device initfn and gets clobbered.  We need to
restore it just like pci-assign does.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>
Reviewed-by: NBandan Das <bsd@redhat.com>
Message-id: 20131112185059.7262.33780.stgit@bling.home
Cc: qemu-stable@nongnu.org
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

Fix the following run-test-x86_64 testsuite failures:

-lea (%%eax) = 0000000000000001
-lea (%%ebx) = 0000000000000002
-lea (%%ecx) = 0000000000000004
-lea (%%edx) = 0000000000000008
-lea (%%esi) = 0000000000000010
-lea (%%edi) = 0000000000000020
+lea (%%eax) = 0000abcc00000001
+lea (%%ebx) = 0000abcf00000002
+lea (%%ecx) = 0000abc900000004
+lea (%%edx) = 0000abc500000008
+lea (%%esi) = 0000abdd00000010
+lea (%%edi) = 0000abed00000020

In addition, reduce ifdeffery and minimize the number of TCG ops
produced during address computation.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Message-id: 1384219016-5170-1-git-send-email-rth@twiddle.net
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

clang defines __ATOMIC_SEQ_CST but its implementation of the
__atomic_exchange() builtin differs from that of gcc. Move the
__clang__ branch of the ifdef ladder to the top and fix its
implementation (there is no such builtin as __sync_exchange),
so we can compile with clang again.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Message-id: 1382435921-18438-1-git-send-email-peter.maydell@linaro.org
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

Commit 787aaf57 (target-i386: forward CPUID cache leaves when -cpu host is
used, 2013-09-02) brings bits 31..26 of CPUID leaf 04h out of sync with
the APIC IDs that QEMU reserves for each package.  This number must come
from "-smp" options rather than from the host CPUID.

It also turns out that this unsyncing makes Windows Server 2012R2 fail
to boot.
Tested-by: NPeter Lieven <pl@kamp.de>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Reviewed-by: NBenoit Canet <benoit@irqsave.net>
Reviewed-by: NEduardo Habkost <ehabkost@redhat.com>
Message-id: 1384879786-6721-1-git-send-email-pbonzini@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

MIPS Jazz chipset doesn't seem to raise data bus exceptions on invalid accesses.
However, there is no easy way to prevent them. Creating a big memory region
for the whole address space doesn't prevent memory core to directly call
unassigned_mem_read/write which in turn call cpu->do_unassigned_access,
which (for MIPS CPU) raise an data bus exception.

This fixes a MIPS Jazz regression introduced in c658b94f.
Signed-off-by: NHervé Poussineau <hpoussin@reactos.org>
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NHervé Poussineau <hpoussin@reactos.org>
Message-id: 1383603977-7003-1-git-send-email-hpoussin@reactos.org
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

After commit b1bbfe72 (aio / timers: On timer modification, qemu_notify
or aio_notify, 2013-08-21) FreeBSD guests report a huge slowdown.

The problem shows up as soon as FreeBSD turns out its periodic (~1 ms)
tick, but the timers are only the trigger for a pre-existing problem.

Before the offending patch, setting a timer did a timer_settime system call.

After, setting the timer exits the event loop (which uses poll) and
reenters it with a new deadline.  This does not cause any slowdown; the
difference is between one system call (timer_settime and a signal
delivery (SIGALRM) before the patch, and two system calls afterwards
(write to a pipe or eventfd + calling poll again when re-entering the
event loop).

Unfortunately, the exit/enter causes the main loop to grab the iothread
lock, which in turns kicks the VCPU thread out of execution.  This
causes TCG to execute the next VCPU in its round-robin scheduling of
VCPUS.  When the second VCPU is mostly unused, FreeBSD runs a "pause"
instruction in its idle loop which only burns cycles without any
progress.  As soon as the timer tick expires, the first VCPU runs
the interrupt handler but very soon it sets it again---and QEMU
then goes back doing nothing in the second VCPU.

The fix is to make the pause instruction do "cpu_loop_exit".

Cc: Richard Henderson <rth@twiddle.net>
Reported-by: NLuigi Rizzo <rizzo@iet.unipi.it>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Reviewed-by: NRichard Henderson <rth@twiddle.net>
Message-id: 1384948442-24217-1-git-send-email-pbonzini@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

The buffer content might be read out more than once, currently
we just repeatedly read the first data block, buffer offset is
missing.

Cc: qemu-stable@nongnu.org
Signed-off-by: NAmos Kong <akong@redhat.com>
Message-id: 1385023371-8198-3-git-send-email-akong@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

We didn't set default chr_name, the free is redundant.
Signed-off-by: NAmos Kong <akong@redhat.com>
Message-id: 1385023371-8198-2-git-send-email-akong@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

If period is assigned to 0, limit timer will expire immediately.
It causes a qemu warning:

"main-loop: WARNING: I/O thread spun for 1000 iterations"

This limit is meaningless. This patch forbids to assign 0 to period.
Reviewed-by: NAmit Shah <amit.shah@redhat.com>
Signed-off-by: NAmos Kong <akong@redhat.com>
Message-id: 1385031203-23790-1-git-send-email-akong@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

pc-bios/s390-zipl.rom is a flat image so it's expected that
loading it as elf will fail.
It should fall back on loading a flat file, but doesn't
on 32 bit systems, instead it fails printing:
    qemu: hardware error: could not load bootloader 's390-zipl.rom'

The result is boot failure.

The reason is that a 64 bit unsigned interger which is set
to -1 on error is compared to -1UL which on a 32 bit system
with gcc is a 32 bit unsigned interger.
Since both are unsigned, no sign extension takes place and
comparison evaluates to non-equal.

There's no reason to do clever tricks: all functions
we call actually return int so just use int.
And then we can use == -1 everywhere, consistently.
Reviewed-by: NAlexander Graf <agraf@suse.de>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
Message-id: 20131121133426.GA30827@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

g_array_get_element_size was only added in glib 2.14.
Fortunately we don't use it for any arrays where
element size is > 1, so just add an assert.
Reported-by: NRichard Henderson <rth@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Message-id: 1385036128-8753-2-git-send-email-mst@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

g_string_vprintf was only introduced in 2.24 so switch to vsnprintf
instead.  A bit uglier but name size is fixed at 4 bytes here so it's
easy.
Reported-by: NRichard Henderson <rth@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Message-id: 1385036128-8753-1-git-send-email-mst@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

# By Jan Kiszka (1) and others
# Via Gleb Natapov
* qemu-kvm/uq/master:
  kvm: Fix uninitialized cpuid_data
  pci-assign: Remove dead code for direct I/O region access from userspace
  KVM: x86: fix typo in KVM_GET_XCRS

Message-id: cover.1385040432.git.gleb@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

# By Sebastian Macke
# Via Jia Liu
* jliu/or32:
  target-openrisc: Correct carry flag check of l.addc and l.addic test cases
  target-openrisc: Correct memory bounds checking for the tlb buffers
  openrisc-timer: Reduce overhead, Separate clock update functions
  target-openrisc: Correct wrong epcr register in interrupt handler
  target-openrisc: Remove executable flag for every page
  target-openrisc: Remove unnecessary code generated by jump instructions
  target-openrisc: Speed up move instruction

Message-id: 1384958318-9145-1-git-send-email-proljc@gmail.com
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

# By Wangting (Kathy)
# Via Juan Quintela
* quintela/migration.next:
  The calculation of bytes_xfer in qemu_put_buffer() is wrong

Message-id: 1384946787-8190-1-git-send-email-quintela@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

The test cases did not correctly test for the carry flag.
Signed-off-by: NSebastian Macke <sebastian@macke.de>
Reviewed-by: NJia Liu <proljc@gmail.com>
Signed-off-by: NJia Liu <proljc@gmail.com>

The mtspr and mfspr routines didn't check for the correct memory boundaries.
This fixes a segmentation fault while booting Linux.
Signed-off-by: NSebastian Macke <sebastian@macke.de>
Reviewed-by: NJia Liu <proljc@gmail.com>
Signed-off-by: NJia Liu <proljc@gmail.com>

The clock value is only evaluated when really necessary reducing
the overhead of the timer handling.

This also solves a problem in the way the Linux kernel
handles the timer and the expected accuracy.
The old version could lead to inaccurate timings.
Signed-off-by: NSebastian Macke <sebastian@macke.de>
Reviewed-by: NJia Liu <proljc@gmail.com>
Signed-off-by: NJia Liu <proljc@gmail.com>

This patch corrects several misbehaviors during an interrupt process.
Most of the time the pc is already correct and therefore no special treatment
of the exceptions is necessary.

Tested by checking crashing programs which otherwise work in or1ksim.
Signed-off-by: NSebastian Macke <sebastian@macke.de>
Reviewed-by: NJia Liu <proljc@gmail.com>
Signed-off-by: NJia Liu <proljc@gmail.com>

Pages should be flagged executable only if the tlb executable flag is
set or the mmu is off.
Signed-off-by: NSebastian Macke <sebastian@macke.de>
Reviewed-by: NJia Liu <proljc@gmail.com>
Signed-off-by: NJia Liu <proljc@gmail.com>

The sr_f variable is only used for the l.bf and l.bnf instructions.
For clarity the code is also rewritten using a switch statement instead
of if chaining.
Signed-off-by: NSebastian Macke <sebastian@macke.de>
Reviewed-by: NJia Liu <proljc@gmail.com>
Signed-off-by: NJia Liu <proljc@gmail.com>

The OpenRISC architecture does not have its own move register
instruction. Instead it uses either "l.addi rd, r0, x" or
"l.ori rd, rs, 0" or "l.or rd, rx, r0"

The l.ori instruction is automatically optimized but not the l.addi instruction.
This patch optimizes for this special case.
Signed-off-by: NSebastian Macke <sebastian@macke.de>
Reviewed-by: NJia Liu <proljc@gmail.com>
Signed-off-by: NJia Liu <proljc@gmail.com>

In qemu_put_buffer(), bytes_xfer += size is wrong, it will be more
than expected, and should be bytes_xfer += l.
Signed-off-by: Nzhangmin <zhangmin6@huawei.com>
Signed-off-by: NJuan Quintela <quintela@redhat.com>

# By Peter Lieven
# Via Juan Quintela
* quintela/migration.next:
  migration: drop MADVISE_DONT_NEED for incoming zero pages

Message-id: 1384878412-23521-1-git-send-email-quintela@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

# By Andreas Färber
# Via Stefan Hajnoczi
* stefanha/block:
  qtest: Use -display none by default

QOM infrastructure fixes for 1.7

* QOM memory leak fix

# gpg: Signature made Tue 19 Nov 2013 01:58:58 AM PST using RSA key ID 3E7E013F
# gpg: Can't check signature: public key not found

# By Vlad Yasevich
# Via Andreas Färber
* afaerber/tags/qom-devices-for-anthony:
  qom: Fix memory leak in object_property_set_link()

# By Richard Henderson
# Via Richard Henderson
* rth/tcg-ia64-17:
  tcg-ia64: Introduce tcg_opc_bswap64_i
  tcg-ia64: Introduce tcg_opc_ext_i
  tcg-ia64: Introduce tcg_opc_movi_a
  tcg-ia64: Introduce tcg_opc_mov_a
  tcg-ia64: Use A3 form of logical operations
  tcg-ia64: Use SUB_A3 and ADDS_A4 for subtraction
  tcg-ia64: Use ADDS for small addition
  tcg-ia64: Avoid unnecessary stop bit in tcg_out_alu
  tcg-ia64: Move AREG0 to R32
  tcg-ia64: Simplify brcond
  tcg-ia64: Handle constant calls
  tcg-ia64: Use shortcuts for nop insns
  tcg-ia64: Use TCGMemOp within qemu_ldst routines

Message-id: 1384811395-7097-1-git-send-email-rth@twiddle.net
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

pc last minute fixes for 1.8

This has a patch that drops an unused FW CFG entry.
I think it's best to include it before 1.7 to avoid
the need to maintain it in compat machine types.

There's also a doc bugfix by Amos: I'm guessing
doc fixes are still fair game even at this late stage.
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Mon 18 Nov 2013 03:48:14 AM PST using RSA key ID D28D5469
# gpg: Can't check signature: public key not found

# By Amos Kong (1) and Igor Mammedov (1)
# Via Michael S. Tsirkin
* mst/tags/for_anthony:
  doc: fix hardcoded helper path
  pc: disable pci-info

Message-id: 1384775449-6693-1-git-send-email-mst@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

# By Jan Krupa (4) and others
# Via Michael Tokarev
* mjt/trivial-patches:
  hw/i386/Makefile.obj: use $(PYTHON) to run .py scripts consistently
  configure: Use -B switch only for Python versions which support it
  qga: Fix shutdown command of guest agent to work with SysV
  console: Remove unused debug code
  qga: Fix compilation for old versions of MinGW
  .travis.yml: basic compile and check recipes
  pci-assign: Fix error_report of pci-stub message
  qapi: Fix comment for create-type to match code.
  vl: fix build when configured with no graphic support
  usb: drop unused USBNetState.inpkt field
  qemu-char: add missing characters used in keymaps
  qemu-char: add support for U-prefixed symbols
  qemu-char: add Czech keymap file
  qemu-char: add Czech characters to VNC keysyms

Message-id: 1384684850-6777-1-git-send-email-mjt@msgid.tls.msk.ru
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

Block fixes for 1.7.0

# gpg: Signature made Fri 15 Nov 2013 09:51:25 AM PST using RSA key ID C88F2FD6
# gpg: Can't check signature: public key not found

# By Max Reitz (3) and others
# Via Kevin Wolf
* kwolf/tags/for-anthony:
  block: Fail if requested driver is not available
  MAINTAINERS: add block driver sub-maintainers
  qemu-img: Fix overwriting 'ret' before using
  qemu-iotests: Test qcow2 count_contiguous_clusters()
  qcow2: fix possible corruption when reading multiple clusters
  qmp: access the local QemuOptsLists for drive option
  MAINTAINERS: add block tree repo URLs
  qemu-iotests: Extend 041 for unbacked mirroring
  block/drive-mirror: Check for NULL backing_hd
  qapi-schema: Update description for NewImageMode
  block: Print its file name if backing file opening failed

Message-id: 1384537999-5972-1-git-send-email-kwolf@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

# By Amos Kong (1) and Sebastian Huber (1)
# Via Stefan Hajnoczi
* stefanha/net:
  virtio-net: fix the memory leak in rxfilter_notify()
  smc91c111: Fix receive starvation

Message-id: 1384532032-19057-1-git-send-email-stefanha@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

Patch queue for ppc - 2013-11-08

These are two patches that will hopefully make it into 1.7. The SLOF update
fixes -append kernel command line argument passing into the guest kernel. The
other patch makes VIO devices appear when using -device '?'.

# gpg: Signature made Thu 07 Nov 2013 07:34:54 PM PST using RSA key ID 03FEDC60
# gpg: Can't check signature: public key not found

# By Alexey Kardashevskiy
# Via Alexander Graf
* agraf/tags/signed-ppc-for-upstream-1.7:
  pseries: Update SLOF firmware image
  spapr: add vio-bus devices to categories

Message-id: 1383881766-13958-1-git-send-email-agraf@suse.de
Signed-off-by: NAnthony Liguori <aliguori@amazon.com>

The madvise for zeroed out pages was introduced when every transferred
zero page was memset to zero and thus allocated. Since commit
211ea740 we check for zeroness of a target page before we memset
it to zero. Additionally we memmap target memory so it is essentially
zero initialized (except for e.g. option roms and bios which are loaded
into target memory although they shouldn't).

It was reported recently that this madvise causes a performance degradation
in some situations. As the madvise should only be called rarely and if it's called
it is likely on a busy page (it was non-zero and changed to zero during migration)
drop it completely.
Reported-By: NZhang Haoyu <haoyu.zhang@huawei.com>
Acked-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NPeter Lieven <pl@kamp.de>
Signed-off-by: NJuan Quintela <quintela@redhat.com>

Save the result of the call to object_get_canonical_path()
so we can free it.

Cc: qemu-stable@nongnu.org
Signed-off-by: NVlad Yasevich <vyasevic@redhat.com>
Reviewed-by: NAmos Kong <akong@redhat.com>
Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: NAndreas Färber <afaerber@suse.de>

This avoids each test needing to add it to suppress windows popping up.

[Commit 7ceeedd0 ("blockdev-test: add
test case for drive_add duplicate IDs") and commit
43cd2098 ("qdev-monitor-test: add
device_add leak test cases") added qtest tests without specifying
-display none.

As a result, "make check" now tries to use graphics (GTK or SDL).  Since
graphics are not used by the test and inappropriate for headless "make
check" runs, add the missing -display none.

This fixes "make check" in the QEMU buildbot.
-- Stefan]
Signed-off-by: NAndreas Färber <afaerber@suse.de>
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>

object_get_canonical_path() returns a gchar*, it should be freed by the
caller.
Signed-off-by: NAmos Kong <akong@redhat.com>
Reviewed-by: NMichael S. Tsirkin <mst@redhat.com>
Reviewed-by: NVlad Yasevich <vyasevic@redhat.com>
Reviewed-by: NAndreas Färber <afaerber@suse.de>
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>