This cleans up the next patch that calls unmap from map.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>

We can't afford the overhead of switching out and back into mmap mode
around each interrupt, but we can do it lazily via a timer.  On INTx
interrupt, disable the mmap'd memory regions and set a timer.  On
every interrupt, push the timer out.  If the timer expires and the
interrupt is no longer pending, switch back to mmap mode.

This has the benefit that things like graphics cards, which rarely or
never, fire an interrupt don't need manual user intervention to add
the x-intx=off parameter.  They'll just remain in mmap mode until they
trigger an interrupt, and if they don't continue to regularly fire
interrupts, they'll switch back.

The default timeout is tuned for network cards so that a ping is just
enough to keep them in non-mmap mode, where they have much better
latency.  It is tunable with an experimental option,
x-intx-mmap-timeout-ms.  A value of 0 keeps the device in non-mmap
mode after the first interrupt.

It's possible we could look at the class code of devices and come up
with reasonable per-class defaults based on expected interrupt
frequency and latency.  None of this is used for MSI interrupts and
also won't be used if we can bypass through KVM.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>

* 'master' of git.qemu.org:/pub/git/qemu:
  qemu-barrier: Fix compilation on i386 hosts

Commit 1d31fca4 tried to fix bug
introduced by 610b823e by including
qemu-common.h, which breaks the build further.

Include compiler.h instead, as suggested by Blue Swirl.
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Aka "normal" comparisons.  We now have the infrastructure to
pass back non-boolean results from gen_compare.  This will
automatically get used by both branches and conditional moves.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Now that we've cleaned up global temporary allocation, we can
continue translating the fallthru path of a conditional trap.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

There are 6 temporaries that disas_sparc_insn relies on having been
allocated.  Now that they are no longer referenced across branches,
they need not be allocated as local temps.

Move the allocation/free of these temporaries to make it clear that
they are local to the translation of a single insn.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

The branches around the exception are maintaining an otherwise
unnecessary use of local temps for the cpu destination.

Note that gen_op_t{add,sub}_cc were identical to gen_op_{add,sub}_cc.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Share more code between unconditional and conditional paths.

Move the computation of the trap number into the conditional BB;
avoid using temporaries that have gone out of scope (cpu_tmp32)
or rely on local temps (cpu_dst).

Fully fold the exception number when the trap number is %g0+imm.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

The branches around the exception are maintaining an otherwise
unnecessary use of local temps for the cpu destination.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

For the moment gen_cond et al retain their existing interface,
using setcond to turn a (potential) comparison back into a boolean.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

The arguments passed are always the same.
Pass down just DisasContext instead.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Use the cpu_cond global register directly instead of passing it down.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Use the cpu_cond global register directly instead of passing it down.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Use the cpu_cond global register directly instead of passing it down.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

We always pass cpu_cond to the cond parameter.  Use that global
register directly instead of passing it down.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

We always pass cpu_cond to the cond parameter.  Use that global
register directly instead of passing it down.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

We always pass cpu_cond to the r_cond parameter.  Use that global
register directly instead of passing it down.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

No need for ifdefs when the log mask does just as well.
No need to print pc/npc when we're dumping the whole cpu state.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

We don't really need to be told that %g are general register, etc.
Issue a trailing newline to separate blocks.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

The pointer entry 'temps' always refers to the array entry 'static_temps'.
Removing the pointer and renaming 'static_temps' to 'temps' reduces the
size of TCGContext (4 or 8 byte) and allows better code generation.
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Reviewed-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

* 'target-arm.for-upstream' of git://git.linaro.org/people/pmaydell/qemu-arm:
  target-arm: Drop unused DECODE_CPREG_CRN macro
  target-arm: use deposit instead of hardcoded version
  target-arm: mark a few integer helpers const and pure
  target-arm: convert sar, shl and shr helpers to TCG
  target-arm: convert add_cc and sub_cc helpers to TCG
  target-arm: use globals for CC flags
  target-arm: Reinstate display of VFP registers in cpu_dump_state
  cpu_dump_state: move DUMP_FPU and DUMP_CCOP flags from x86-only to generic

* 'trivial-patches' of git://github.com/stefanha/qemu:
  versatilepb: Use symbolic indices for ARM PIC
  qdev: kill bogus comment
  qemu-barrier: Fix compiler version check for future gcc versions
  hw: Add missing 'static' attribute for QEMUMachine
  cleanup useless return sentence
  qemu-sockets: Fix compiler warning (regression for MinGW)
  vnc: Fix spelling (hellmen -> hellman) in comment
  slirp: Fix spelling in comment (enought -> enough, insure -> ensure)
  tcg/arm: Use tcg_out_mov_reg rather than inline equivalent code
  cpu: Add missing 'static' attribute to qemu_global_mutex
  configure: Support empty target list (--target-list=)
  hw: Fix return value check for bdrv_read, bdrv_write

* 'ppc-for-upstream' of git://repo.or.cz/qemu/agraf: (35 commits)
  PPC: KVM: Fix BAT put
  PPC: e500: Only expose even TLB sizes in initial TLB
  ppc/pseries: Reset VPA registration on CPU reset
  pseries: Don't test for MSR_PR for hypercalls under KVM
  PPC: e500: calculate initrd_base like dt_base
  PPC: e500: increase DTC_LOAD_PAD
  device tree: simplify dumpdtb code
  fdt: move dumpdtb interpretation code to device_tree.c
  target-ppc: Remove unused power_mode field from cpu state
  pseries: Set hash table size based on RAM size
  pseries: Remove unnecessary locking from PAPR hash table hcalls
  ppc405_uc: Fix buffer overflow
  target-ppc: KVM: Fix some kernel version edge cases for kvmppc_reset_htab()
  pseries: Fix semantics of RTAS int-on, int-off and set-xive functions
  pseries: Rework implementation of TCE bypass
  pseries: Remove never used flags field from spapr vio devices
  pseries: Remove XICS irq type enum type
  pseries: Remove C bitfields from xics code
  pseries: Small cleanup to H_CEDE implementation
  pseries: Fix XICS reset
  ...

Commit 610b823e uses QEMU_GNUC_PREREQ
on i386 hosts.

That macro is defined in qemu-common.h which is not always included
before qemu-barrier.h, so compilation on i386 hosts was broken.
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

The table that was recently added for hppa is generally usable.
And with the renumbering of the TCG_COND constants it's not too
difficult to compute rather than have a table.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

There are several cases that can be handled easier inside both
translators and code generators if we have out-of-band values
for conditions.  It's easy enough to handle ALWAYS and NEVER in
the natural way inside the tcg middle-end.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Before we rearrange the TCG_COND enumeration, add a predicate for
the (single) use of comparisons vs TCGCond.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Now that all machines call isa_vga_init() or pci_vga_init(), some unused
code can be removed.

Cc: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

The CONFIG_SPICE is now tested in vl.c and thus not needed anymore.

Cc: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

As a bonus it allows new vga card types (including none).
Acked-by: NBlue Swirl <blauwirbel@gmail.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Keep the case to prevent some vga card to be selected.

Cc: Alexander Graf <agraf@suse.de>
Cc: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>