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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>
2013-04-06Merge 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
2013-04-05Merge remote-tracking branch 'sstabellini/xen-2013-04-05' into stagingAnthony Liguori
# By Alex Bligh (2) and Felipe Franciosi (2) # Via Stefano Stabellini * sstabellini/xen-2013-04-05: Allow xen guests to plug disks of 1 TiB or more Introduce 64 bit integer write interface to xenstore Xen PV backend: Disable use of O_DIRECT by default as it results in crashes. Xen PV backend: Move call to bdrv_new from blk_init to blk_connect
2013-04-05Merge remote-tracking branch 'kwolf/for-anthony' into stagingAnthony Liguori
# By Stefan Hajnoczi (4) and Kevin Wolf (3) # Via Kevin Wolf * kwolf/for-anthony: qcow2: Fix L1 write error handling in qcow2_update_snapshot_refcount qcow2: Return real error in qcow2_update_snapshot_refcount block: clean up I/O throttling wait_time code block: drop duplicated slice extension code block: keep I/O throttling slice time constant block: fix I/O throttling accounting blind spot usb-storage: Forward serial number to scsi-disk
2013-04-05qcow2: Fix L1 write error handling in qcow2_update_snapshot_refcountKevin Wolf
It ignored the error code, and at least the 'goto fail' is obvious nonsense as it creates an endless loop (if the next attempt doesn't magically succeed) and leaves the in-memory L1 table in big-endian instead of converting it back. In error cases, there's no point in writing an updated L1 table, so skip this part for them. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-04-05qcow2: Return real error in qcow2_update_snapshot_refcountKevin Wolf
This fixes the error message triggered by the following script: cat > /tmp/blkdebug.cfg <<EOF [inject-error] event = "cluster_free" errno = "28" immediately = "off" EOF $qemu_img create -f qcow2 test.qcow2 10G $qemu_img snapshot -c snap test.qcow2 $qemu_img snapshot -d snap blkdebug:/tmp/blkdebug.cfg:test.qcow2 Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-04-05block: clean up I/O throttling wait_time codeStefan Hajnoczi
The wait_time variable is in seconds. Reflect this in a comment and use NANOSECONDS_PER_SECOND instead of BLOCK_IO_SLICE_TIME * 10 (which happens to have the right value). Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Tested-By: Benoit Canet <benoit@irqsave.net> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-04-05block: drop duplicated slice extension codeStefan Hajnoczi
The current slice is extended when an I/O request exceeds the limit. There is no need to extend the slice every time we check a request. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Tested-By: Benoit Canet <benoit@irqsave.net> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-04-05block: keep I/O throttling slice time constantStefan Hajnoczi
It is not necessary to adjust the slice time at runtime. We already extend the current slice in order to carry over accounting into the next slice. Changing the actual slice time value introduces oscillations. The guest may experience large changes in throughput or IOPS from one moment to the next when slice times are adjusted. Reported-by: Benoît Canet <benoit@irqsave.net> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Tested-By: Benoit Canet <benoit@irqsave.net> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-04-05block: fix I/O throttling accounting blind spotStefan Hajnoczi
I/O throttling relies on bdrv_acct_done() which is called when a request completes. This leaves a blind spot since we only charge for completed requests, not submitted requests. For example, if there is 1 operation remaining in this time slice the guest could submit 3 operations and they will all be submitted successfully since they don't actually get accounted for until they complete. Originally we probably thought this is okay since the requests will be accounted when the time slice is extended. In practice it causes fluctuations since the guest can exceed its I/O limit and it will be punished for this later on. Account for I/O upon submission so that I/O limits are enforced properly. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Tested-By: Benoit Canet <benoit@irqsave.net> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-04-05usb-storage: Forward serial number to scsi-diskKevin Wolf
usb-storage takes care to fetch the USB serial number from -drive options, but it neglected to pass its own 'serial' property to the scsi-disk it creates. With this patch, the 'serial' qdev property and the 'serial' option in -drive behave the same and correctly apply the serial number on both USB and SCSI level. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2013-04-05hw/nand.c: Fix nand erase operationWendy Liang
Usually, nand erase operation has only 2 or 3 address cycles. We need to mask s->addr to zero unset stale high-order bytes in the nand address before using it as the erase address. This fixes the NAND erase operation in Linux. [PC: Generalised to work for any number of address cycles rather than just 3] Signed-off-by: Wendy Liang <jliang@xilinx.com> Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: 1364967188-26711-1-git-send-email-peter.crosthwaite@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-04-05cadence_uart: Flush queued characters on resetPeter Crosthwaite
Reset can be used to empty the rx-fifo. As the fifo full condition is used to return false from can_receive, queued rx data should be flushed on reset accordingly. Cc: Wendy Liang <jliang@xilinx.com> Cc: Jason Wu <huanyu@xilinx.com> Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reported-by: Jason Wu <huanyu@xilinx.com> Message-id: 494c1e005e225c915d295ddfd75d992ad2dabc3c.1364964526.git.peter.crosthwaite@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-04-05pl330: Don't inhibit ES bits on INTENPeter Crosthwaite
This if-else logic inhibits setting of the event status (ES) bits when interrupts are enabled. This is incorrect. ES should be set regardless on INTEN state. INTEN only inhibits the signalling of events to PL330 threads, not setting of the ES register. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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