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2011-08-03HMP: Remove the duplicated info "info kvm" in hmp-commands.hx.Zhi Yong Wu1-2/+0
Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-08-03configure: display "no" for disabled kvm/vhost-netBrad1-2/+2
Fix configure display for non-Linux OS's and the KVM / vhost-net features to show "no" output instead of nothing at the end of the line. Signed-off-by: Brad Smith <brad@comstyle.com> Acked-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-08-03qxl: bump pci revGerd Hoffmann2-7/+24
Inform guest drivers about the new features I/O commands we have now (async commands, S3 support) if building with newer spice, i.e. if SPICE_INTERFACE_QXL_MINOR >= 1. sneaked in some 81+ column line spliting. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alon Levy <alevy@redhat.com>
2011-08-03qxl: add QXL_IO_FLUSH_{SURFACES,RELEASE} for guest S3&S4 supportAlon Levy1-0/+30
Add two new IOs. QXL_IO_FLUSH_SURFACES - equivalent to update area for all surfaces, used to reduce vmexits from NumSurfaces to 1 on guest S3, S4 and resolution change (windows driver implementation is such that this is done on each of those occasions). QXL_IO_FLUSH_RELEASE - used to ensure anything on last_release is put on the release ring for the client to free. Signed-off-by: Yonit Halperin <yhalperi@redhat.com> Signed-off-by: Alon Levy <alevy@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-08-03qxl: async io support using new spice apiAlon Levy5-56/+276
Some of the QXL port i/o commands are waiting for the spice server to complete certain actions. Add async versions for these commands, so we don't block the vcpu while the spice server processses the command. Instead the qxl device will raise an IRQ when done. The async command processing relies on an added QXLInterface::async_complete and added QXLWorker::*_async additions, in spice server qxl >= 3.1 Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alon Levy <alevy@redhat.com>
2011-08-03slirp: Take maintainer tokenJan Kiszka1-2/+3
Anthony asked me to pick up the maintenance of this subsystem, and I agreed. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
2011-08-02posix-aio-compat: Allow read after EOFKevin Wolf1-0/+19
In order to be able to transparently replace bdrv_read calls by bdrv_co_read, reading beyond EOF must produce zeros instead of short reads for AIO, too. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-02coroutines: Use one global bottom half for CoQueueKevin Wolf1-13/+6
Now that AsyncContexts don't exist any more, we can use one global bottom half for restarting coroutines instead of allocating a new one every time (before removing AsyncContexts, the problem with having a global BH was that it had to belong to a single AsyncContexts and wouldn't be executed in a different one - which leads to deadlocks) Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-02async: Remove AsyncContextKevin Wolf7-169/+11
The purpose of AsyncContexts was to protect qcow and qcow2 against reentrancy during an emulated bdrv_read/write (which includes a qemu_aio_wait() call and can run AIO callbacks of different requests if it weren't for AsyncContexts). Now both qcow and qcow2 are protected by CoMutexes and AsyncContexts can be removed. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-02qcow: Use coroutinesKevin Wolf1-118/+62
The old qcow format is another user of the AsyncContext infrastructure. Converting it to coroutines (and therefore CoMutexes) allows to remove AsyncContexts. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-02qcow2: Use coroutinesKevin Wolf3-169/+102
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-02coroutines: LocksKevin Wolf5-1/+198
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-02block: Add bdrv_co_readv/writev emulationKevin Wolf2-8/+76
In order to be able to call bdrv_co_readv/writev for drivers that don't implement the functions natively, add an emulation that uses the AIO functions to implement them. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-02block: Emulate AIO functions with bdrv_co_readv/writevKevin Wolf1-1/+97
Use the bdrv_co_readv/writev callbacks to implement bdrv_aio_readv/writev and bdrv_read/write if a driver provides the coroutine version instead of the synchronous or AIO version. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-02block: Add bdrv_co_readv/writevKevin Wolf5-1/+59
Add new block driver callbacks bdrv_co_readv/writev, which work on a QEMUIOVector like bdrv_aio_*, but don't need a callback. The function may only be called inside a coroutine, so a block driver implementing this interface can yield instead of blocking during I/O. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-02coroutine: add test-coroutine --benchmark-lifecycleStefan Hajnoczi1-0/+30
Add a microbenchmark for coroutine create, enter, and return (aka lifecycle). This is a useful benchmark because users are expected to create many coroutines, one per I/O request for example, and we therefore need to provide good performance in that scenario. To run: make test-coroutine ./test-coroutine --benchmark-lifecycle 20000000 This will do 20,000,000 coroutine create, enter, return iterations and print the resulting time. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-08-02coroutine: add test-coroutine automated testsStefan Hajnoczi3-1/+165
To run automated tests for coroutines: make test-coroutine ./test-coroutine On success the program terminates with exit status 0. On failure an error message is written to stderr and the program exits with exit status 1. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-08-02libcacard: use INSTALL_DATA for dataAlon Levy1-3/+2
Signed-off-by: Alon Levy <alevy@redhat.com>
2011-08-01Sparc: fix non-faulting unassigned memory accessesBlue Swirl1-17/+8
Commit b14ef7c9ab41ea824c3ccadb070ad95567cca84e introduced cpu_unassigned_access() function. On Sparc, the function does not restore AREG0 used for global CPUState on function exit, causing bugs with non-faulting unassigned memory accesses. Alpha, Microblaze and MIPS are not affected. Fix by restoring AREG0 on exit. Remove excess saving by do_unassigned_access() functions. Also ignore unassigned accesses outside of CPU context. Reported-by: Bob Breuer <breuerr@mc.net> Tested-by: Bob Breuer <breuerr@mc.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-08-01qxl: only disallow specific io's in vga modeAlon Levy1-1/+2
Since the driver is still in operation even after moving to UNDEFINED, i.e. by destroying primary in any way. Signed-off-by: Alon Levy <alevy@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-08-01qxl: make qxl_guest_bug take variable argumentsAlon Levy2-3/+8
Signed-off-by: Alon Levy <alevy@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-08-01qxl: error handling fixes and cleanups.Gerd Hoffmann2-5/+32
Add qxl_guest_bug() function which is supposed to be called in case sanity checks of guest requests fail. It raises an error IRQ and logs a message in case guest debugging is enabled. Make PANIC_ON() abort instead of exit. That macro should be used for qemu bugs only, any guest-triggerable stuff should use the new qxl_guest_bug() function instead. Convert a few easy cases from PANIC_ON() to qxl_guest_bug() to show intended usage. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-08-01qxl: add io_port_to_stringAlon Levy1-1/+39
Signed-off-by: Alon Levy <alevy@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-08-01qxl: fix surface tracking & lockingGerd Hoffmann2-1/+14
Surface tracking needs proper locking since it is used from vcpu and spice worker threads, add it. Also reset the surface counter when zapping all surfaces. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-08-01spice/qxl: move worker wrappersGerd Hoffmann5-70/+72
Move the wrapper functions which are used by qxl only to qxl.c. Rename them from qemu_spice_* to qxl_spice_*. Also pass in a qxl state pointer instead of a SimpleSpiceDisplay pointer. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-08-01spice: add qemu_spice_display_init_commonGerd Hoffmann3-12/+13
Factor out SimpleSpiceDisplay initialization into qemu_spice_display_init_common() and call it from both qxl.c (for vga mode) and spice-display.c Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-08-01spice: add worker wrapper functions.Gerd Hoffmann4-24/+129
Add wrapper functions for all spice worker calls. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-08-01coroutine: implement coroutines using gthreadAneesh Kumar K.V3-0/+153
On platforms that don't support makecontext(3) use gthread based coroutine implementation. Darwin has makecontext(3) but getcontext(3) is stubbed out to return ENOTSUP. Andreas Färber <andreas.faerber@web.de> debugged this and contributed the ./configure test which solves the issue for Darwin/ppc64 (and ppc) v10.5. [Original patch by Aneesh, made consistent with coroutine-ucontext.c and switched to GStaticPrivate by Stefan. Tested on Linux and OpenBSD.] Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-08-01coroutine: introduce coroutinesKevin Wolf7-0/+552
Asynchronous code is becoming very complex. At the same time synchronous code is growing because it is convenient to write. Sometimes duplicate code paths are even added, one synchronous and the other asynchronous. This patch introduces coroutines which allow code that looks synchronous but is asynchronous under the covers. A coroutine has its own stack and is therefore able to preserve state across blocking operations, which traditionally require callback functions and manual marshalling of parameters. Creating and starting a coroutine is easy: coroutine = qemu_coroutine_create(my_coroutine); qemu_coroutine_enter(coroutine, my_data); The coroutine then executes until it returns or yields: void coroutine_fn my_coroutine(void *opaque) { MyData *my_data = opaque; /* do some work */ qemu_coroutine_yield(); /* do some more work */ } Yielding switches control back to the caller of qemu_coroutine_enter(). This is typically used to switch back to the main thread's event loop after issuing an asynchronous I/O request. The request callback will then invoke qemu_coroutine_enter() once more to switch back to the coroutine. Note that if coroutines are used only from threads which hold the global mutex they will never execute concurrently. This makes programming with coroutines easier than with threads. Race conditions cannot occur since only one coroutine may be active at any time. Other coroutines can only run across yield. This coroutines implementation is based on the gtk-vnc implementation written by Anthony Liguori <anthony@codemonkey.ws> but it has been significantly rewritten by Kevin Wolf <kwolf@redhat.com> to use setjmp()/longjmp() instead of the more expensive swapcontext() and by Paolo Bonzini <pbonzini@redhat.com> for Windows Fibers support. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-08-01raw-posix: Always check paio_init resultFrediano Ziglio1-6/+5
Signed-off-by: Frediano Ziglio <freddy77@gmail.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-01raw-posix: Typo fixFrediano Ziglio1-1/+1
Signed-off-by: Frediano Ziglio <freddy77@gmail.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-01block: Removed unused function bdrv_write_syncFrediano Ziglio2-15/+0
Signed-off-by: Frediano Ziglio <freddy77@gmail.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-01scsi-disk: Remove 'drive_kind'Hannes Reinecke2-25/+27
Instead of using its own definitions scsi-disk should be using the device type of the parent device. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-01scsi: Sanitize command definitionsHannes Reinecke4-54/+81
Sanitize SCSI command definitions. Add _10 suffix to READ_CAPACITY, WRITE_VERIFY, VERIFY, READ_LONG, WRITE_LONG, and WRITE_SAME. Add new command definitions for LOCATE_10, UNMAP, VARLENGTH_CDB, WRITE_FILEMARKS_16, EXTENDED_COPY, ATA_PASSTHROUGH, ACCESS_CONTROL_IN, ACCESS_CONTROL_OUT, COMPARE_AND_WRITE, VERIFY_16, SYNCHRONIZE_CACHE_16, LOCATE_16, ERASE_16, WRITE_LONG_16, LOAD_UNLOAD, VERIFY_12. Remove invalid definition of WRITE_LONG_2. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-01scsi: Remove REZERO_UNIT emulationHannes Reinecke3-11/+0
REZERO_UNIT command is obsolete. Remove support for it. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-01scsi: Remove references to SET_WINDOWHannes Reinecke2-3/+0
SET_WINDOW command is vendor-specific only. So we shouldn't try to emulate it. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-01scsi-disk: Codingstyle fixesHannes Reinecke1-8/+8
Replace tabs with spaces. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-01block/vpc.c: Detect too-large vpc fileSerge E. Hallyn1-1/+7
VHD files technically can be up to 2Tb, but virtual pc is limited to 127G. Currently qemu-img refused to create vpc files > 127G, but it is failing to return error when converting from a non-vpc VHD file which is >127G. It returns success, but creates a truncated converted image. Also, qemu-img info claims the vpc file is 127G (and clean). This patch detects a too-large vpc file and returns -EFBIG. Without this patch, ============================================================= root@ip-10-38-123-242:~/qemu-fixed# qemu-img info /mnt/140g-dynamic.vhd image: /mnt/140g-dynamic.vhd file format: vpc virtual size: 127G (136899993600 bytes) disk size: 284K root@ip-10-38-123-242:~/qemu-fixed# qemu-img convert -f vpc -O raw /mnt/140g-dynamic.vhd /mnt/y root@ip-10-38-123-242:~/qemu-fixed# echo $? 0 root@ip-10-38-123-242:~/qemu-fixed# qemu-img info /mnt/y image: /mnt/y file format: raw virtual size: 127G (136899993600 bytes) disk size: 0 ============================================================= (The 140G image was truncated with no warning or error.) With the patch, I get: ============================================================= root@ip-10-38-123-242:~/qemu-fixed# ./qemu-img info /mnt/140g-dynamic.vhd qemu-img: Could not open '/mnt/140g-dynamic.vhd': File too large root@ip-10-38-123-242:~/qemu-fixed# ./qemu-img convert -f vpc -O raw /mnt/140g-dynamic.vhd /mnt/y qemu-img: Could not open '/mnt/140g-dynamic.vhd': File too large qemu-img: Could not open '/mnt/140g-dynamic.vhd' ============================================================= See https://bugs.launchpad.net/qemu/+bug/814222 for details. Signed-off-by: Serge Hallyn <serge.hallyn@canonical.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-01block: Don't let locked flag prevent medium loadMarkus Armbruster1-1/+1
Commit aea2a33c made bdrv_eject() obey the locked flag. Correct for medium eject (eject_flag set), incorrect for medium load (eject_flag clear). See MMC-5 Table 341 "Actions for Lock/Unlock/Eject". Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-01block: Make BlockDriver method bdrv_eject() return voidMarkus Armbruster4-27/+12
Callees always return 0, except for FreeBSD's cdrom_eject(), which returns -ENOTSUP when the device is in a terminally wedged state. The only caller is bdrv_eject(), and it maps -ENOTSUP to 0 since commit 4be9762a. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-01block: Make BlockDriver method bdrv_set_locked() return voidMarkus Armbruster3-10/+5
The only caller is bdrv_set_locked(), and it ignores the value. Callees always return 0, except for FreeBSD's cdrom_set_locked(), which returns -ENOTSUP when the device is in a terminally wedged state. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-01block/raw-win32: Drop disabled code for removable host devicesMarkus Armbruster1-35/+0
It's been disabled since the start (commit 19cb3738, Aug 2006), and has been untouched except for spelling fixes and such. I don't feel like dragging it along any further. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-01block: Reset device model callbacks on detachMarkus Armbruster1-0/+2
BlockDriverState members change_cb and change_opaque are initially null. The device model may set them, with bdrv_set_change_cb(). If the device model gets detached (hot unplug), they're left dangling. Only safe because device hot unplug automatically destroys the BlockDriverState. But that's a questionable feature, best not to rely on it. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-08-01blockdev: Make eject fail for non-removable drives even with -fMarkus Armbruster1-10/+7
Ejecting hard disk platters can only end in tears. If you need to revoke access to an image, use drive_del, not eject -f. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-07-31microblaze: Add missing call to qemu_init_vcpu.Peter A. G. Crosthwaite1-0/+1
Fixes emulation with io-thread. Signed-off-by: Peter A. G. Crosthwaite <peter.crosthwaite@petalogix.com> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2011-07-30TCG: fix breakage by previous patchBlue Swirl1-7/+12
Fix incorrect logic and typos in previous commit 1bfd07bdfe56cea43dbe258dcb161e46b0ee29b7. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-30TCG: fix breakage on some RISC hostsBlue Swirl1-13/+115
Fix breakage by a640f03178c22355a158fa9378e4f8bfa4f517a6 and 55c0975c5b358e948b9ae7bd7b07eff92508e756. Some TCG targets don't implement all TCG ops, so make optimizing those conditional. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-30Do constant folding for unary operations.Kirill Batuzov1-0/+59
Perform constant folding for NOT and EXT{8,16,32}{S,U} operations. Signed-off-by: Kirill Batuzov <batuzovk@ispras.ru> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-30Do constant folding for shift operations.Kirill Batuzov1-0/+72
Perform constant forlding for SHR, SHL, SAR, ROTR, ROTL operations. Signed-off-by: Kirill Batuzov <batuzovk@ispras.ru> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-30Do constant folding for boolean operations.Kirill Batuzov1-0/+37
Perform constant folding for AND, OR, XOR operations. Signed-off-by: Kirill Batuzov <batuzovk@ispras.ru> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
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