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2013-04-09migration: use a single I/O operation when writev_buffer is not definedPaolo Bonzini
The recent patches to use vectored I/O for RAM migration caused a regression in savevm speed. To restore previous performance, add data to the buffer in qemu_put_buffer_async whenever writev_buffer is not available in the QEMUFile. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2013-04-09migration: set f->is_write and flush in add_to_iovecPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2013-04-08Merge remote-tracking branch 'bonzini/hw-dirs' into stagingAnthony Liguori
# By Paolo Bonzini # Via Paolo Bonzini * bonzini/hw-dirs: (35 commits) hw: move private headers to hw/ subdirectories. MAINTAINERS: update for source code movement hw: move last file to hw/arm/ hw: move hw/kvm/ to hw/i386/kvm hw: move ARM CPU cores to hw/cpu/, configure with default-configs/ hw: move other devices to hw/misc/, configure with default-configs/ hw: move NVRAM interfaces to hw/nvram/, configure with default-configs/ hw: move GPIO interfaces to hw/gpio/, configure with default-configs/ hw: move interrupt controllers to hw/intc/, configure with default-configs/ hw: move DMA controllers to hw/dma/, configure with default-configs/ hw: move VFIO and ivshmem to hw/misc/ hw: move PCI bridges to hw/pci-* or hw/ARCH hw: move SD/MMC devices to hw/sd/, configure with default-configs/ hw: move timer devices to hw/timer/, configure with default-configs/ hw: move ISA bridges and devices to hw/isa/, configure with default-configs/ hw: move char devices to hw/char/, configure via default-configs/ hw: move more files to hw/xen/ hw: move SCSI controllers to hw/scsi/, configure via default-configs/ hw: move SSI controllers to hw/ssi/, configure via default-configs/ hw: move I2C controllers to hw/i2c/, configure via default-configs/ ... Message-id: 1365442249-18259-1-git-send-email-pbonzini@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-04-08Merge remote-tracking branch 'stefanha/net' into stagingAnthony Liguori
# By Dmitry Fleytman # Via Stefan Hajnoczi * stefanha/net: vmxnet3: const_cpu_to_le64 wrapping for feature bits dropped vmxnet3: iPXE compatibility fixes Message-id: 1365435829-23535-1-git-send-email-stefanha@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-04-08hw: move private headers to hw/ subdirectories.Paolo Bonzini
Many headers are used only in a single directory. These can be kept in hw/. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08MAINTAINERS: update for source code movementPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move last file to hw/arm/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move hw/kvm/ to hw/i386/kvmPaolo Bonzini
Peter requested the KVM GIC to be in hw/intc. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move ARM CPU cores to hw/cpu/, configure with default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move other devices to hw/misc/, configure with default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move NVRAM interfaces to hw/nvram/, configure with default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move GPIO interfaces to hw/gpio/, configure with default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move interrupt controllers to hw/intc/, configure with default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move DMA controllers to hw/dma/, configure with default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move VFIO and ivshmem to hw/misc/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move PCI bridges to hw/pci-* or hw/ARCHPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move SD/MMC devices to hw/sd/, configure with default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move timer devices to hw/timer/, configure with default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move ISA bridges and devices to hw/isa/, configure with default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move char devices to hw/char/, configure via default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move more files to hw/xen/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move SCSI controllers to hw/scsi/, configure via default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move SSI controllers to hw/ssi/, configure via default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move I2C controllers to hw/i2c/, configure via default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move display devices to hw/display/, configure via default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move audio devices to hw/audio/, configure via default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move block devices to hw/block/, configure via default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move NICs to hw/net/, configure via default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move MC146818RTC to hw/timer/, configure via default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move watchdogs to hw/watchdog, configure via default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: make all of hw/pci/ configurable via default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: make all of hw/usb/ configurable via default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: make all of hw/ide/ configurable via default-configs/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move virtio devices to hw/ subdirectoriesPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move target-independent files to subdirectoriesPaolo Bonzini
This patch tackles all files that are compiled once, moving them to subdirectories of hw/. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08moxie: configure with default-configs filePaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: make subdirectories for devicesPaolo Bonzini
Prepare the new directory structure. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move headers to include/Paolo Bonzini
Many of these should be cleaned up with proper qdev-/QOM-ification. Right now there are many catch-all headers in include/hw/ARCH depending on cpu.h, and this makes it necessary to compile these files per-target. However, fixing this does not belong in these patches. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08build: enable using $(CONFIG_FOO) on the rhs of config filesPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08configure: Don't fall back to gthread coroutine backendPeter Maydell
The gthread coroutine backend is broken and does not produce a working QEMU; it is only useful for some very limited debugging situations. Clean up the backend selection logic in configure so that it now runs "if on windows use windows; else prefer ucontext; else sigaltstack". To do this we refactor the configure code to separate out "test whether we have a working ucontext", "pick a default if user didn't specify" and "validate that user didn't specify something invalid", rather than having all three of these run together. We also simplify the Makefile logic so it just links in the backend the configure script selects. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1365419487-19867-3-git-send-email-peter.maydell@linaro.org Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-04-08configure: Provide and use convenience error reporting functionPeter Maydell
Provide a convenience function for reporting an error and exiting, and update various places in the configure script to use it. This allows us to be a little more consistent about how format our error messages and makes the calling code shorter. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1365419487-19867-2-git-send-email-peter.maydell@linaro.org Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-04-08qemu-char: really fix behavior on can_read = 0Paolo Bonzini
I misread the glib manual, g_source_remove does not let you re-attach the source later. This behavior (called "blocking" the source in glib) is present in glib's source code, but private and not available outside glib; hence, we have to resort to re-creating the source every time. In fact, g_source_remove and g_source_destroy are the same thing, except g_source_destroy is O(1) while g_source_remove scans a potentially very long list of GSources in the current main loop. Ugh. Better use g_source_destroy explicitly, and leave "tags" to those dummies who cannot track their pointers' lifetimes. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1365426195-12596-1-git-send-email-pbonzini@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-04-08Merge remote-tracking branch 'mdroth/qga-pull-4-2-13' into stagingAnthony Liguori
# By Laszlo Ersek (2) and others # Via Michael Roth * mdroth/qga-pull-4-2-13: qemu-ga: ga_get_fd_handle(): abort if fd_counter overflows qga schema: document generic QERR_UNSUPPORTED qga schema: mark optional GuestLogicalProcessor.can-offline with #optional qga: add windows implementation for guest-set-time qga: add windows implementation for guest-get-time
2013-04-08Merge remote-tracking branch 'kraxel/usb.79' into stagingAnthony Liguori
# By Gerd Hoffmann (7) and Hans de Goede (3) # Via Gerd Hoffmann * kraxel/usb.79: usb-tablet: Don't claim wakeup capability for USB-2 version usb: update docs for bus name change usb-hub: report status changes only once usb-hub: limit chain length xhci: zap unused name field xhci: remove unimplemented printfs xhci: remove leftover debug printf xhci: fix numintrs sanity checks usb-redir: Add flow control support usb-redir: Fix crash on migration with no client connected
2013-04-08vmxnet3: const_cpu_to_le64 wrapping for feature bits droppedDmitry Fleytman
Byte swap is redundant because shared memory reading functions already swap bytes when required Signed-off-by: Dmitry Fleytman <dmitry@daynix.com> Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-04-08vmxnet3: iPXE compatibility fixesDmitry Fleytman
iPXE vmxnet3 driver makes a few assumptions regarding device operation that were missed during testing with Linux and Windows drivers. This patch adds following logic: 1. Additional GET commands processing added 2. Max number of RX chunks should be set to 1 when driver passes 0 via corresponding shared memory field 3. Enforecement for max chunks number added Signed-off-by: Dmitry Fleytman <dmitry@daynix.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-04-06Merge branch 'arm-devs.next' of git://git.linaro.org/people/pmaydell/qemu-armBlue Swirl
* 'arm-devs.next' of git://git.linaro.org/people/pmaydell/qemu-arm: hw/nand.c: Fix nand erase operation cadence_uart: Flush queued characters on reset pl330: Don't inhibit ES bits on INTEN pflash_cfi01: Implement migration support pflash_cfi01: Drop unused 'bypass' field hw/arm_gic_common: Use vmstate struct rather than save/load functions arm_gic: Fix sizes of state fields in preparation for vmstate support vmstate: Add support for two dimensional arrays hw/onenand.c: fix migration of dynamically allocated buffer "otp" hw/sd.c: fix migration of dynamically allocated buffer "buf" vmstate.h: introduce VMSTATE_BUFFER_POINTER_UNSAFE macro hw/arm_mptimer: Save the timer state pl050: Don't send always-constant is_mouse field hw/arm/nseries: don't print to stdout or stderr
2013-04-05main-loop: drop the BQL if the I/O appears to be spinningAnthony Liguori
The char-flow refactoring introduced a busy-wait that depended on an action from the VCPU thread. However, the VCPU thread could never take that action because the busy-wait starved the VCPU thread of the BQL because it never dropped the mutex while running select. Paolo doesn't want to drop this optimization for fear that we will stop detecting these busy waits. I'm afraid to keep this optimization even with the busy-wait fixed because I think a similar problem can occur just with heavy I/O thread load manifesting itself as VCPU pauses. As a compromise, introduce an artificial timeout after a thousand iterations but print a rate limited warning when this happens. This let's us still detect when this condition occurs without it being a fatal error. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Message-id: 1365169560-11012-1-git-send-email-aliguori@us.ibm.com
2013-04-05qemu-char: eliminate busy waiting on can_read returning zeroPaolo Bonzini
The character backend refactoring introduced an undesirable busy wait. The busy wait happens if can_read returns zero and there is data available on the character device's file descriptor. Then, the I/O watch will fire continuously and, with TCG, the CPU thread will never run. 1) Char backend asks front end if it can write 2) Front end says no 3) poll() finds the char backend's descriptor is available 4) Goto (1) What we really want is this (note that step 3 avoids the busy wait): 1) Char backend asks front end if it can write 2) Front end says no 3) poll() goes on without char backend's descriptor 4) Goto (1) until qemu_chr_accept_input() called 5) Char backend asks front end if it can write 6) Front end says yes 7) poll() finds the char backend's descriptor is available 8) Backend handler called After this patch, the IOWatchPoll source and the watch source are separated. The IOWatchPoll is simply a hook that runs during the prepare phase on each main loop iteration. The hook adds/removes the actual source depending on the return value from can_read. A simple reproducer is qemu-system-i386 -serial mon:stdio ... followed by banging on the terminal as much as you can. :) Without this patch, emulation will hang. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1365177573-11817-1-git-send-email-pbonzini@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-04-05Merge remote-tracking branch 'stefanha/trivial-patches' into stagingAnthony Liguori
# By Peter Crosthwaite (2) and others # Via Stefan Hajnoczi * stefanha/trivial-patches: xilinx_zynq: Cleanup ssi_create_slave petalogix_ml605_mmu: Cleanup ssi_create_slave() target-s390: Fix SRNMT linux-user: Don't omit comma for strace of rt_sigaction() test-visitor-serialization: Fix some memory leaks
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