Commit Graph

32935 Commits

Author SHA1 Message Date
Fam Zheng
271c0f68b4 aio: Fix use-after-free in cancellation path
The current flow of canceling a thread from THREAD_ACTIVE state is:

  1) Caller wants to cancel a request, so it calls thread_pool_cancel.

  2) thread_pool_cancel waits on the conditional variable
     elem->check_cancel.

  3) The worker thread changes state to THREAD_DONE once the task is
     done, and notifies elem->check_cancel to allow thread_pool_cancel
     to continue execution, and signals the notifier (pool->notifier) to
     allow callback function to be called later. But because of the
     global mutex, the notifier won't get processed until step 4) and 5)
     are done.

  4) thread_pool_cancel continues, leaving the notifier signaled, it
     just returns to caller.

  5) Caller thinks the request is already canceled successfully, so it
     releases any related data, such as freeing elem->common.opaque.

  6) In the next main loop iteration, the notifier handler,
     event_notifier_ready, is called. It finds the canceled thread in
     THREAD_DONE state, so calls elem->common.cb, with an (likely)
     dangling opaque pointer. This is a use-after-free.

Fix it by calling event_notifier_ready before leaving
thread_pool_cancel.

Test case update: This change will let cancel complete earlier than
test-thread-pool.c expects, so update the code to check this case: if
it's already done, done_cb sets .aiocb to NULL, skip calling
bdrv_aio_cancel on them.

Reported-by: Ulrich Obergfell <uobergfe@redhat.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-28 14:28:46 +02:00
Kevin Wolf
bd60436936 qcow2: Fix memory leak in COW error path
This triggers if bs->drv becomes NULL in a concurrent request. This is
currently only the case when corruption prevention kicks in (i.e. at
most once per image, and after that it produces I/O errors).

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-28 14:28:46 +02:00
Leandro Dorileo
4ba6fabfb4 QemuOpt: add unit tests
Cover basic aspects and API usage for QemuOpt. The current implementation
covers the API's planned to be changed by Chunyan Liu in his QEMUOptionParameter
replacement/cleanup job.

Other APIs should be covered in future improvements.

[Squashing in a small fix "QemuOpt: use qemu_find_opts_err() to avoid
output on stderr in tests".

qemu_find_opts() calls error_report() instead of propagating the Error
object.  It is undesirable to clutter test case output with error
messages from a passing test.

Use qemu_find_opts_err() to avoid the output on stderr.
--Stefan]

Signed-off-by: Leandro Dorileo <l@dorileo.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-28 14:27:42 +02:00
Fam Zheng
7cf6376ae8 qemu-iotests: Handle cache mode option in 091
We should allow testing this on tmpfs. Any cache setting in iotests
should try to obey $CACHEMODE.

The cache mode is still "none" by default but overridable

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-28 14:22:25 +02:00
Peter Maydell
4aa23452e3 input: add event routing and multiseat support.
input: misc bugfixes and minor improvements.
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Merge remote-tracking branch 'remotes/kraxel/tags/pull-input-9' into staging

input: add event routing and multiseat support.
input: misc bugfixes and minor improvements.

# gpg: Signature made Mon 26 May 2014 07:44:29 BST using RSA key ID D3E87138
# gpg: Can't check signature: public key not found

* remotes/kraxel/tags/pull-input-9:
  docs: add multiseat.txt
  usb: add input routing support for tablet and keyboard
  sdl: pass key event source to input layer
  input: bind devices and input routing
  input: switch hid mouse and tablet to the new input layer api.
  input: switch hid keyboard to new input layer api.
  input: keymap: add meta keys
  input: add name to input_event_key_number
  input: add qemu_input_key_number_to_qcode
  input (curses): mask keycodes to remove modifier bits

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-05-28 10:33:05 +01:00
Peter Maydell
9474ab1487 trivial patches for 2014-05-26
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Merge remote-tracking branch 'remotes/mjt/tags/trivial-patches-2014-05-26' into staging

trivial patches for 2014-05-26

# gpg: Signature made Mon 26 May 2014 08:17:08 BST using RSA key ID A4C3D7DB
# gpg: Can't check signature: public key not found

* remotes/mjt/tags/trivial-patches-2014-05-26: (23 commits)
  libcacard: remove useless initializers
  net: cadence_gem: Fix top comment
  bsd-user: replace fprintf(stderr, ...) with error_report()
  audio: replace fprintf(stderr, ...) with error_report() in audio
  libcacard: fix wrong array expansion logic
  libcacard/vcard_emul_nss: Drop a redundant conditional
  libcacard: Convert two leftover realloc() to GLib
  libcacard/vreader: Tighten assertion to clarify intent
  libcacard/vreader: Drop broken recovery from failed assertion
  libcacard: Plug memory leaks around vreader_get_reader_list()
  libcacard/vscclient: Bury some dead code
  vl: fix 'name' option to work with -readconfig
  configure: Put tempfiles in a subdir of the build directory
  dma-helpers: avoid calling dma_bdrv_unmap() twice
  arch_init: replace fprintf(stderr, ...) with error_report()
  pci: move dereferencing of root only after verifying valid root pointer
  jazz_led: Add missing break in switch case
  bswap.h: Rename ldl_p, stl_p, etc to ldl_he_p, stl_he_p, etc
  configure: Automatically select GTK+ 3.0 if GTK+ 2.0 is unavailable
  nbd: Miscellaneous typo fixes.
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-05-27 22:45:03 +01:00
Peter Maydell
2f21ff25c0 Merge remote-tracking branch 'remotes/mwalle/tags/lm32-semihosting/20140524' into staging
* remotes/mwalle/tags/lm32-semihosting/20140524:
  lm32: remove lm32_sys
  test: lm32: use semihosting for testing
  target-lm32: add semihosting support
  test: lm32: make test cases independent

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-05-27 22:11:25 +01:00
Peter Maydell
27aa948502 Merge remote-tracking branch 'remotes/rth/tcg-mips' into staging
* remotes/rth/tcg-mips: (24 commits)
  tcg-mips: Enable direct chaining of TBs
  tcg-mips: Simplify movcond
  tcg-mips: Simplify brcond2
  tcg-mips: Improve setcond eq/ne vs zeros
  tcg-mips: Simplify setcond2
  tcg-mips: Simplify brcond
  tcg-mips: Simplify setcond
  tcg-mips: Commonize opcode implementations
  tcg-mips: Improve add2/sub2
  tcg-mips: Hoist args loads
  tcg-mips: Fix subtract immediate range
  tcg-mips: Name the opcode enumeration
  tcg-mips: Use EXT for AND on mips32r2
  tcg-mips: Use T9 for TCG_TMP1
  tcg-mips: Introduce TCG_TMP0, TCG_TMP1
  tcg-mips: Rearrange register allocation
  tcg-mips: Convert to new_ldst
  tcg-mips: Convert to new qemu_l/st helpers
  tcg-mips: Move softmmu slow path out of line
  tcg-mips: Split large ldst offsets
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-05-27 18:31:02 +01:00
Peter Maydell
93f94f9018 Merge remote-tracking branch 'remotes/rth/fix-tci' into staging
* remotes/rth/fix-tci:
  tci: Fix tcg_out_call

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-05-27 14:44:04 +01:00
Christoffer Dall
00d0f7cb66 target-arm: Fix segfault on startup when KVM enabled
Commit 50a2c6e55f introduced a bug where QEMU would segfault on startup
when using KVM on ARM hosts, because kvm_arm_reset_cpu() accesses
cpu->cpreg_reset_values, which is not allocated before
kvm_arch_init_vcpu(). Fix this by not calling cpu_reset() until after
qemu_init_vcpu().

Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Andreas Faerber <afaerber@suse.de>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Message-id: 1401194263-13010-1-git-send-email-christoffer.dall@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-05-27 13:55:39 +01:00
Gerd Hoffmann
8977bd111f docs: add multiseat.txt
Howto on setting up multiseat for guests.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-05-26 08:42:43 +02:00
Gerd Hoffmann
f85d28316a usb: add input routing support for tablet and keyboard
Add display property to the keyboard.
Add display and head properties to the tablet.

If properties are set bind device to the display specified to
setup input routing.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-05-26 08:42:43 +02:00
Gerd Hoffmann
ee8c0b622c sdl: pass key event source to input layer
So the input layer knows where the input is coming from
and input routing works correctly.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-05-26 08:42:43 +02:00
Gerd Hoffmann
6f5943cf45 input: bind devices and input routing
Add function to bind input devices to display devices.  Implementing
input routing on top of this:  Events coming from the display device in
question are routed to the input device bound to it (if there is one).

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-05-26 08:42:43 +02:00
Gerd Hoffmann
8b84286f4c input: switch hid mouse and tablet to the new input layer api.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-05-26 08:42:43 +02:00
Gerd Hoffmann
1ff5eedd1d input: switch hid keyboard to new input layer api.
Minimal patch to get the switchover done.  We continue processing ps/2
scancodes for now as they are part of the live migration stream.  Fixing
that, then mapping directly from QKeyValue to HID keycodes is left as
excercise for another day.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-05-26 08:42:43 +02:00
Gerd Hoffmann
86846bfe64 input: keymap: add meta keys
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-05-26 08:42:43 +02:00
Gerd Hoffmann
2386a90730 input: add name to input_event_key_number
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-05-26 08:42:42 +02:00
Gerd Hoffmann
11c7fa7fa6 input: add qemu_input_key_number_to_qcode
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-05-26 08:42:42 +02:00
Andrew Oates
f5c0ab1312 input (curses): mask keycodes to remove modifier bits
Without the mask, control bits are passed on in the keycode, generating
incorrect PS/2 sequences when SHIFT, ALT, etc are held down.

Cc: qemu-stable@nongnu.org
Signed-off-by: Andrew Oates <andrew@aoates.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-05-26 08:42:42 +02:00
Michael Tokarev
1687a089f1 libcacard: remove useless initializers
libcacard has many functions which initializes local variables
at declaration time, which are always assigned some values later
(often right after declaration).  Clean up these initializers.

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-05-26 10:41:22 +04:00
Peter Crosthwaite
116d554601 net: cadence_gem: Fix top comment
To indicate Cadence GEM not Xilinx.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-05-26 10:41:22 +04:00
Le Tan
1fba509527 bsd-user: replace fprintf(stderr, ...) with error_report()
Replace fprintf(stderr,...) with error_report() in files bsd-user/*.
The trailing "\n"s of the @fmt argument have been removed
because @fmt of error_report() should not contain newline.

Signed-off-by: Le Tan <tamlokveer@gmail.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-05-26 10:41:22 +04:00
Le Tan
69e995040c audio: replace fprintf(stderr, ...) with error_report() in audio
Replace fprintf(stderr,...) with error_report() in files audio/*.
The trailing "\n"s of the @fmt argument have been removed
because @fmt of error_report() should not contain newline.

Signed-off-by: Le Tan <tamlokveer@gmail.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-05-26 10:41:21 +04:00
Michael Tokarev
d09b8fa161 libcacard: fix wrong array expansion logic
The currrent code in libcacard/vcard_emul_nss.c:vcard_emul_options()
has a weird bug in variable usage around expanding opts->vreader
array.

There's a helper variable, vreaderOpt, which is first needlessly
initialized to NULL, next, conditionally, only we have to expand
opts->vreader, receives array expansion from g_renew(), and next,
even if we don't actually perform expansion, the value of this
variable is assigned to the actual array, opts->vreader, which
was supposed to be expanded.

So, since we expand the array by READER_STEP increments, only
once in READER_STEP (=4) the code will work, in other 3/4 times
it will fail badly.

Fix this by not using this temp variable when expanding the
array, and by dropping the useless =NULL initializer too -
if it wasn't in place initially, compiler would have warned
us about this problem at the beginning.

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
2014-05-26 10:40:04 +04:00
Michael Walle
25156d1061 lm32: remove lm32_sys
Since we have now semihosting on the lm32 target, this device is no longer
needed. Remove it.

Signed-off-by: Michael Walle <michael@walle.cc>
2014-05-24 19:43:52 +02:00
Michael Walle
4e7d30a22a test: lm32: use semihosting for testing
Instead of the lm32-sys device, use semihosting to print to the host
console and exit the test.

Signed-off-by: Michael Walle <michael@walle.cc>
2014-05-24 19:42:29 +02:00
Michael Walle
f7bbcfb5c3 target-lm32: add semihosting support
Intercept certain system calls if semihosting is enabled. This should
behave like the GDB simulator.

Signed-off-by: Michael Walle <michael@walle.cc>
2014-05-24 19:42:29 +02:00
Michael Walle
a946ce8020 test: lm32: make test cases independent
Make test cases independent from from each other. Eg. if a test case needs
a specific value in register A, don't rely on the fact that it is already
set by the preceding test case.

Signed-off-by: Michael Walle <michael@walle.cc>
2014-05-24 19:42:29 +02:00
Richard Henderson
b6bfeea92a tcg-mips: Enable direct chaining of TBs
Now that the code_gen_buffer is constrained to not cross 256mb
regions, we are assured that we can use J to reach another TB.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:48:37 -07:00
Richard Henderson
33fac20bb2 tcg-mips: Simplify movcond
Use the same table to fold comparisons as with setcond.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:47:14 -07:00
Richard Henderson
3401fd259e tcg-mips: Simplify brcond2
Emitting a single branch instead of (up to) 3, using setcond2
to generate the composite compare.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:47:08 -07:00
Richard Henderson
1db1c4d7d9 tcg-mips: Improve setcond eq/ne vs zeros
The original code results in one too many insns per zero
present in the input.  And since comparing 64-bit numbers
vs zero is common...

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:46:58 -07:00
Richard Henderson
9a2f0bfe32 tcg-mips: Simplify setcond2
Using tcg_unsigned_cond and tcg_high_cond.
Also, move the function up in the file for future cleanups.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:46:53 -07:00
Richard Henderson
c068896f7f tcg-mips: Simplify brcond
Use the same table to fold comparisons as with setcond.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:46:49 -07:00
Richard Henderson
fd1cf66630 tcg-mips: Simplify setcond
Use a table to fold comparisons to less-than.
Also, move the function up in the file for futher simplifications.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:46:39 -07:00
Richard Henderson
4f048535cd tcg-mips: Commonize opcode implementations
Most opcodes fall in to one of a couple of patterns.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:46:32 -07:00
Richard Henderson
741f117d9a tcg-mips: Improve add2/sub2
Reduce insn count from 5 to either 3 or 4.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:46:25 -07:00
Richard Henderson
22ee3a987d tcg-mips: Hoist args loads
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:46:20 -07:00
Richard Henderson
070603f62b tcg-mips: Fix subtract immediate range
Since we must use ADDUI, we would generate incorrect code for -32768.
Leaving off subtract of +32768 makes things easier for a follow-on patch.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:46:08 -07:00
Richard Henderson
ac0f3b1263 tcg-mips: Name the opcode enumeration
And use it in the opcode emission functions.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:46:03 -07:00
Richard Henderson
1c4182687e tcg-mips: Use EXT for AND on mips32r2
At the same time, tidy deposit by introducing tcg_out_opc_bf.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:45:56 -07:00
Richard Henderson
f216a35f36 tcg-mips: Use T9 for TCG_TMP1
T0 is an argument register for the n32 and n64 abis.  T9 is the call
address register for the abis, and is more directly under the control
of the backend.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:45:48 -07:00
Richard Henderson
6c530e32f4 tcg-mips: Introduce TCG_TMP0, TCG_TMP1
Use these instead of hard-coding the registers to use for temporaries.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:45:44 -07:00
Richard Henderson
418839044e tcg-mips: Rearrange register allocation
Use FP (also known as S8) as a normal call-saved register.

Include T0 in the allocation order and call-clobbered list
even though it's currently used as a TCG temporary.

Put the argument registers at the end of the allocation order.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:45:28 -07:00
Richard Henderson
fbef2cc80f tcg-mips: Convert to new_ldst
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:45:24 -07:00
Richard Henderson
ce0236cfbd tcg-mips: Convert to new qemu_l/st helpers
In addition, fill delay slots calling the helpers and tail
call to the store helpers.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:45:20 -07:00
Richard Henderson
9d8bf2d125 tcg-mips: Move softmmu slow path out of line
At the same time, tidy up the call helpers, avoiding a memory reference.
Split out several subroutines.  Use TCGMemOp constants.  Make endianness
selectable at runtime.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:45:16 -07:00
Richard Henderson
f9a716325f tcg-mips: Split large ldst offsets
Use this to reduce goto_tb by one insn.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:45:13 -07:00
Richard Henderson
7dae901d2d tcg-mips: Fill the exit_tb delay slot
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:45:09 -07:00