- 02 8月, 2011 3 次提交
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由 Kevin Wolf 提交于
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Kevin Wolf 提交于
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: NKevin Wolf <kwolf@redhat.com>
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由 Kevin Wolf 提交于
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: NKevin Wolf <kwolf@redhat.com>
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- 01 8月, 2011 1 次提交
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由 Kevin Wolf 提交于
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: NKevin Wolf <kwolf@redhat.com> Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
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- 22 7月, 2011 1 次提交
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由 Gerd Hoffmann 提交于
"next" is reserved in systemtap thus using this as a trace parameter name causes trouble when trying to trace with systemtap. Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
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- 21 7月, 2011 1 次提交
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由 Hervé Poussineau 提交于
Signed-off-by: NHervé Poussineau <hpoussin@reactos.org> Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
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- 18 7月, 2011 2 次提交
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由 Amit Shah 提交于
Add some trace events for messages passed between the char layer and the virtio-serial bus. Signed-off-by: NAmit Shah <amit.shah@redhat.com>
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由 Amit Shah 提交于
Add some trace events for messages passed between the guest and host. Signed-off-by: NAmit Shah <amit.shah@redhat.com>
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- 17 7月, 2011 1 次提交
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由 Jan Kiszka 提交于
The map cache is a Xen thing, so its API should make this clear. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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- 19 6月, 2011 2 次提交
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由 Steven Smith 提交于
Introduce a new emulated PCI device, specific to fully virtualized Xen guests. The device is necessary for PV on HVM drivers to work. Signed-off-by: NSteven Smith <ssmith@xensource.com> Signed-off-by: NAnthony PERARD <anthony.perard@citrix.com> Signed-off-by: NStefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Anthony PERARD 提交于
This patch introduces phys memory client for Xen. Only sync dirty_bitmap and set_memory are actually implemented. migration_log will stay empty for the moment. Xen can only log one range for bit change, so only the range in the first call will be synced. Signed-off-by: NAnthony PERARD <anthony.perard@citrix.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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- 14 6月, 2011 8 次提交
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由 Gerd Hoffmann 提交于
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
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由 Gerd Hoffmann 提交于
This patch fixes a bunch of issues in the itd descriptor handling. Most important fix is to handle transfers which cross page borders correctly by looking up the address of the next page. Luckily the linux uses physically contigous memory so the data used to hits the correct location even with this bug instead of corrupting guest memory. Also the transfer length updates for outgoing transfers wasn't correct. While being at it DPRINTFs have been replaced by tracepoints. The isoch_pause logic has been disabled. Not clear to me which propose this serves and I think it is incorrect too as we just skip processing itds. Even when no xfer happens we have to clear the active bit. Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
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由 Gerd Hoffmann 提交于
This patch adds support for keeping multiple queues going at the same time. One slow device will not affect other devices any more. The patch adds code to manage EHCIQueue structs. It also does a number of changes to the state machine: * The state machine will never ever stop in EXECUTING any more. Instead it will continue with the next queue (aka HORIZONTALQH) when the usb device returns USB_RET_ASYNC. * The state machine will stop processing when it figures it walks in circles (easy to figure now that we have a EHCIQueue struct for each QH we've processed). The bailout logic should not be needed any more. For now it is still in, but will assert() in case it triggers. * The state machine will just skip queues with a async USBPacket in flight. * The state machine will resume processing as soon as the async USBPacket is finished. The patch also takes care to flush the QH struct back to guest memory when needed, so we don't get stale data when (re-)loading it from guest memory in FETCHQH state. It also makes the writeback code to not touch the first three dwords of the QH struct as the EHCI must not write them. This actually fixes a bug where QH chaining changes (next ptr) by the linux ehci driver where overwritten by the emulated EHCI. Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
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由 Gerd Hoffmann 提交于
Add a trace point for buffer copies and drop the DPRINTF's. No change in behavior. Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
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由 Gerd Hoffmann 提交于
Add a separate tracepoint to log how register values change in response to a mmio write. Especially useful for registers which have read-only or clear-on-write bits in them. No change in behavior. Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
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由 Gerd Hoffmann 提交于
Trace usb port operations (attach, detach, reset), drop a few obsolete DPRINTF's. No change in behavior. Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
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由 Gerd Hoffmann 提交于
Add functions to get and set the current state of the state machine, add tracepoints there to trace state transitions. Add support for traceing the queue heads and transfer descriptors as we look at them. Drop a few DPRINTFs and all DPRINTF_ST lines, they are obsolete now. No change in behavior. Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
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由 Gerd Hoffmann 提交于
This patch starts adding trace support to ehci. It traces updates of the status register (USBSTS), mmio access and controller reset. It also adds functions to set and clear status register bits and puts them in use everywhere. Some DPRINTF's are dropped in favor of the new tracepoints. No change in behavior. Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
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- 05 6月, 2011 1 次提交
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由 Paolo Bonzini 提交于
The simple backend only supports a maximum of 6 arguments. Split the scsi_req_parsed event in two parts to cope with the limit. Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com> Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
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- 26 5月, 2011 3 次提交
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由 Paolo Bonzini 提交于
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com> Cc: Christoph Hellwig <hch@lst.de>
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由 Paolo Bonzini 提交于
This abstracts calling the command_complete callback, reducing churn in the following patches. Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
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由 Paolo Bonzini 提交于
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
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- 18 5月, 2011 1 次提交
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由 Stefan Hajnoczi 提交于
One strategy to limit the startup delay of consistency check when opening image files is to ensure that the file is marked dirty for as little time as possible. QED currently marks the image dirty when the first allocating write request is issued and clears the dirty bit again when the image is cleanly closed. In practice that means the image is marked dirty for most of a guest's lifetime and prone to being in a dirty state upon crash or power failure. It is safe to clear the dirty bit after all allocating write requests have completed and a flush has been performed. This patch adds a timer after the last allocating write request completes. When the timer fires it will flush and then clear the dirty bit. The timer is set to 5 seconds and is cancelled upon arrival of a new allocating write request. Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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- 08 5月, 2011 2 次提交
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由 Anthony PERARD 提交于
This function allows to unlock a ram_ptr give by qemu_get_ram_ptr. After a call to qemu_put_ram_ptr, the pointer may be unmap from QEMU when used with Xen. Signed-off-by: NAnthony PERARD <anthony.perard@citrix.com> Acked-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Jun Nakajima 提交于
On IA32 host or IA32 PAE host, at present, generally, we can't create an HVM guest with more than 2G memory, because generally it's almost impossible for Qemu to find a large enough and consecutive virtual address space to map an HVM guest's whole physical address space. The attached patch fixes this issue using dynamic mapping based on little blocks of memory. Each call to qemu_get_ram_ptr makes a call to qemu_map_cache with the lock option, so mapcache will not unmap these ram_ptr. Blocks that do not belong to the RAM, but usually to a device ROM or to a framebuffer, are handled in a separate function. So the whole RAMBlock can be map. Signed-off-by: NJun Nakajima <jun.nakajima@intel.com> Signed-off-by: NAnthony PERARD <anthony.perard@citrix.com> Signed-off-by: NStefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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- 03 5月, 2011 1 次提交
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由 Michael Walle 提交于
This patch adds support for Milkymist's minimal Ethernet MAC v2. It superseds minimac1. Signed-off-by: NMichael Walle <michael@walle.cc> Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>
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- 26 4月, 2011 2 次提交
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由 Lluís 提交于
Signed-off-by: NLluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
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由 Stefan Hajnoczi 提交于
Trace events cannot use %s in their format strings because trace backends vary in how they can deference pointers (if at all). Recording const char * values is not meaningful if their contents are not recorded too. Change grlib trace events that rely on strings so that they communicate similar information without using strings. A follow-up patch explains this limitation and updates docs/tracing.txt. Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
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- 07 4月, 2011 1 次提交
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由 Stefan Hajnoczi 提交于
It can be handy to know when the guest locks/unlocks the CD-ROM tray. This trace event makes that possible. Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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- 04 4月, 2011 10 次提交
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由 Michael Walle 提交于
This patch adds support for Milkymist's VGA framebuffer. Signed-off-by: NMichael Walle <michael@walle.cc> Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>
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由 Michael Walle 提交于
This patch adds support for Milkymist's simple UART. Signed-off-by: NMichael Walle <michael@walle.cc> Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>
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由 Michael Walle 提交于
This patch adds support for Milkymist's texture mapping unit. For fast computation this model needs hardware accelerated 3D graphics support (OpenGL). There is no graphical output, all computations belong to internal framebuffers only. Signed-off-by: NMichael Walle <michael@walle.cc> Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>
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由 Michael Walle 提交于
This patch adds support for Milkymist's System Controller core. The model has the following features: - support for shutting down and restarting the board - provide two timers and GPIO - provide registers for system identification and reading the boards capabilities Signed-off-by: NMichael Walle <michael@walle.cc> Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>
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由 Michael Walle 提交于
This patch adds support for Milkymist's SoftUSB core. This model differ from the real hardware in its functionality. The real hardware consits of a tiny freely programmable microcontroller which controls the USB ports. For simplicity reasons, this model emulates only keyboard and mouse input devices, eg. input events translates directly to the corresponding expected messages. Signed-off-by: NMichael Walle <michael@walle.cc> Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>
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由 Michael Walle 提交于
This patch adds support for Milkymist's Programmable FPU. Signed-off-by: NMichael Walle <michael@walle.cc> Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>
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由 Michael Walle 提交于
This patch adds support for Milkymist's minimal Ethernet MAC. Signed-off-by: NMichael Walle <michael@walle.cc> Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>
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由 Michael Walle 提交于
This patch adds support for Milkymist's memory card core. Signed-off-by: NMichael Walle <michael@walle.cc> Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>
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由 Michael Walle 提交于
This patch adds support for the Milkymist's High Performance Dynamic Memory Controller. This is just a dumb model without any functionality. While the real hardware acts for example as a bridge between software and hardware for sending SDRAM commans, this model will only eat up these commands and always returns the expected hardware states, eg. PLL locked etc. Signed-off-by: NMichael Walle <michael@walle.cc> Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>
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由 Michael Walle 提交于
This patch adds support for the Milkymist AC97 compatible sound output and input core. Signed-off-by: NMichael Walle <michael@walle.cc> Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>
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