Add tracepoints to track canceled requests.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Add tracepoint to track completion of emulated control requests.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

When passing through a usb pendrive seabios will present it in the F12
boot menu and will happily boot from it.

This patch adds bootorder support so you can even make it the default
boot device.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

When we queue up usb packets we may happen to find a already queued
packet, which also might be finished at that point already.  We don't
want continue processing the packet at this point though, so lets
just signal back we've found a in-flight packet when in queuing mode.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Not only QHs can form rings, but TDs too.  With the new
queuing/pipelining support we are following TD chains and
can actually walk in circles.  An assert() prevents us from
entering an endless loop then.

Fix is easy:  Just stop queuing when we figure the TD we are
about to queue up is in flight already.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

... to make vmstate id string truely unique with multiple host
controllers, i.e. move from "1/usb-ptr" to "0000:00:01.3/1/usb-ptr"
(usb tabled connected to piix3 uhci).

This obviously breaks migration.  To handle this the usb bus
property "full-path" is added.  When setting this to false old
behavior is maintained.  This way current qemu will be compatible
with old versions when started using '-M pc-$oldversion'.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Basically, the main wait loop calls qemu_run_all_timers() unconditionally. The
first thing this routine used to do is to see if a timer had been serviced,
and then reset the loop timeout to the next deadline.

However, the new deadlines had not been calculated at that point, as
qemu_run_timers() had not been called yet for each of the clocks. So
qemu_rearm_alarm_timer() would end up with a negative or zero deadline, and
default to setting a 250us timeout for the loop.

As qemu_run_timers() is called for each clock, the real deadlines would be put
in place, but because a loop timeout was already set, the loop timeout would
not be changed.

Once that 250us timeout fired, the real deadline would be used for the
subsequent timeout.

For idle VMs, this effectively doubles the number of times through the loop,
doubling the number of select() system calls, timer calls, etc. putting added
scheduling pressure on the kernel. And under cgroups, this really causes a big
problem because the cgroup code does not scale well.

By simply running the timers before trying to rearm the timer, we always rearm
with a non-zero deadline, effectively halving the number of system calls.
Signed-off-by: NPeter Portante <pportant@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

* kiszka/queues/pending:
  vapic: Disable for pre-1.1 machines
  Kick io-thread on qemu_chr_accept_input
  pcnet: Properly handle TX requests during Link Fail
  pcnet: Clear ERR in CSR0 on stop
  signrom: Rewrite as python script

Conflicts:
	hw/pc_piix.c
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

* mst/tags/for_anthony:
  pci: fix corrupted pci conf index register by unaligned write
  acpi: explicitly account for >1 device per slot
  acpi_piix4: Re-define PCI hotplug eject register read
  acpi_piix4: Remove PCI_RMV_BASE write code
  acpi_piix4: Fix PCI hotplug race
  acpi_piix4: Disallow write to up/down PCI hotplug registers
  virtio-pci: change virtio balloon PCI class code
  ivshmem: add missing msix calls
  vhost: readd assert statement
  vhost: Fix size of dirty log sync on resize
  pc: reduce duplication in compat machine types
  piix_pci: fix typo in i400FX chipset init code

* sstabellini/for_anthony:
  xen: introduce an event channel for buffered io event notifications
  xen-mapcache: don't unmap locked entry during mapcache invalidation
  Xen, mapcache: Fix the compute of the size of bucket.
  xen: handle backend deletion from xenstore
  Xen: Add xen-apic support and hook it up.
  Xen: basic HVM MSI injection support.

The kvmvapic was not present in older QEMU versions, thus must be
disabled in compat machines.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>

Once a chr frontend is able to receive input again, we need to inform
the io-thread about this fact. Otherwise, main_loop_wait may continue to
select without the related backend file descriptor in its set. This can
cause high input latencies if only low-rate events arrive otherwise.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>

As long as we have no link and we aren't in internal loopback mode, no
packet must be sent. Instead, LCAR needs to be set in any active TX
descriptor and also CERR in CSR0.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>

pcnet_stop already clears any reason (BABL, CERR, MISS, MERR) why ERR
(bit 15) should be set in CRS0. So we have to clear that bit as well.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>

Now that we have a hard dependency on python anyway, we can replace the
slow shell script to calculate the option ROM checksum with a fast AND
portable python version. Tested both with python 2.7 and 3.1.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>

* 'w64' of git://qemu.weilnetz.de/qemu:
  w64: Fix time conversion for some versions of MinGW-w64
  nbd: Fix compiler warning (w64)
  disas: Replace 'unsigned long' by 'uintptr_t'
  cpu-exec: Remove non-portable type cast and fix format string
  target-mips: Fix type cast for w64 (uintptr_t)
  w64: Fix type cast in os_host_main_loop_wait
  w64: Fix data types in softmmu*.h
  w64: Use uintptr_t in exec.c
  softmmu: Use uintptr_t for physaddr and rename it
  w64: Fix struct CPUTLBEntry
  w64: Fix definition of setjmp
  w32: Move defines for socket specific errors to qemu-os-win32.h
  w64: Use larger alignment for section with generated code
  w64: Fix data types in cpu-all.h, exec.c
  w64: Fix type casts used in some macros in cpu-all.h
  tcg/i386: Add support for w64 ABI
  tcg/i386: Use GDB JIT debugging interface only for hosts with ELF

Move code from cpu_alpha_init() into a CPU initializer.
Signed-off-by: NAndreas Färber <afaerber@suse.de>
Acked-by: NRichard Henderson <rth@twiddle.net>

Embed CPUAlphaState as first member of AlphaCPU.
Signed-off-by: NAndreas Färber <afaerber@suse.de>
Acked-by: NRichard Henderson <rth@twiddle.net>

tb.time is a time value, but not necessarily of the same size as time_t:
while time_t is 64 bit for w64, tb.time still is 32 bit only.

Therefore we need en explicit conversion.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

Portable printing of dev_offset (data type off_t) needs a type cast.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

This is needed for w64. It changes nothing for other hosts.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

This change is needed for w64, but also changes the code for other hosts.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

This changes nothing for other hosts.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

Casting a pointer to an integer must use (DWORD_PTR) instead of (DWORD).
This also matches the definition of 'fd' (gint for w32, gint64 for w64).
Signed-off-by: NStefan Weil <sw@weilnetz.de>

w64 requires uintptr_t.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

Replace all type casts to 'long' or 'unsigned long' by 'intptr_t' or 'uintptr_t'.

For type casts which are only used to extract the lower bits of an address
or to modify those bits, signedness does not matter. There I always use 'uintptr_t'.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

Variable physaddr is a host address which should be represented by
data type 'uintptr_t'.

This is needed for w64 and changes nothing for other hosts.

v2:
Rename physaddr -> hostaddr (suggested by Blue Swirl).
Signed-off-by: NStefan Weil <sw@weilnetz.de>

For w64, some entries need 'uintptr_t' instead of 'unsigned long'.

For other host systems, both data types are identical, so nothing changes.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

The default definition of setjmp which is implemented in MinGW-w64
cannot be used with programs like QEMU which call longjmp from
code without structured exception handling (SEH).

This code therefore disables stack unwinding.

We could also implement SEH for QEMU's generated JIT code, but
that is much more difficult. Stack unwinding would also cost
execution time.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

As those defines are only used for w32,
they should be in the header file for w32.

All files which include slirp.h or qemu_socket.h also
include qemu-os-win32.h.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

The MinGW-w64 compiler allows __attribute__((aligned (32)).
Signed-off-by: NStefan Weil <sw@weilnetz.de>

w64 needs uintptr_t instead of unsigned long.
For other hosts, nothing changes.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

Instead of type casts to long, w64 needs type casts to intptr_t.
For other hosts, this changes nothing.
Signed-off-by: NStefan Weil <sw@weilnetz.de>

w64 uses the registers rcx, rdx, r8 and r9 for function arguments,
so it needs a different declaration of tcg_target_call_iarg_regs.

rax, rcx, rdx, r8, r9, r10 and r11 may be changed by function calls.

rbx, rbp, rdi, rsi, r12, r13, r14 and r15 remain unchanged by function calls.
Reviewed-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NStefan Weil <sw@weilnetz.de>

Not all i386 / x86_64 hosts use ELF.
Ask the compiler whether ELF is used.

On w64, gdb crashes when ELF_HOST_MACHINE is defined.

Cc: Blue Swirl <blauwirbel@gmail.com>
Acked-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NStefan Weil <sw@weilnetz.de>

* 'ppc-for-upstream' of git://repo.or.cz/qemu/agraf:
  pseries: Fix reset of VIO network device
  pseries: Reset vscsi properly
  pseries: Correctly use the device model reset hooks
  pseries: Remove old hcalls hook stub
  pseries: Remove old debug leftovers from spapr_vscsi
  pseries: Fix RTAS based config access
  target-ppc/machine.c: Drop unnecessary ifdefs
  target-ppc: Init dcache and icache size for e500 user mode
  target-ppc: Fix type casts for w64 (uintptr_t)
  target-ppc: QOM'ify CPU reset
  target-ppc: Start QOM'ifying CPU init
  target-ppc: QOM'ify CPU
  target-ppc: Add hooks for handling tcg and kvm limitations
  target-ppc: Drop cpu_ppc_close()
  pseries: Consolidate hack for RTAS display-character usage
  pseries: Remove unused fields from VIOsPAPRBus structure
  pseries: Implement RTAS system-reboot call
  pseries: Fix bug with reset of VIO CRQs
  pseries: Clean up hcall_dprintf() debugging messages
  PPC: Fix TLB invalidation bug within the PPC interrupt handler.

Currently, the PAPR VIO network device does not have a reset handler.  This
means that after a hard reset, H_REGISTER_LOGICAL_LAN will return an error
when the new guest boot attempts to initialize the device.

This patch corrects this, adding a suitable reset hook.
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: NAndreas Färber <afaerber@suse.de>

Currently the PAPR vscsi implementation does not properly clear its table
of request tags when the system is reset.  This patch adds a reset hook
to do so.
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: NAndreas Färber <afaerber@suse.de>

Recently we added code to properly clean away VIO CRQs on reset  However,
this directly uses qemu_register, rather than the existing device model
reset callbacks.  This patch cleans this up by adding proper use of the
reset hook to the VIO bus model.  The existing CRQ reset code is converted
to the new method.
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: NAndreas Färber <afaerber@suse.de>

Some time ago we removed all use of the 'hcalls' callback in the pseries
VIO code, which was used to workaround an ordering problem which has since
been solved properly.  However, the function pointer for the hook remains.
This patch cleans it away.
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: NAndreas Färber <afaerber@suse.de>