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2014-09-26kvmvapic: fix migration when VM paused and when not running WindowsPavel Dovgalyuk1-2/+9
This patch fixes migration by extending do_vapic_enable function. This function called vapic_enable which read cpu number from the guest memory. When cpu number could not be read, vapic was not enabled while loading the VM state. This patch adds required code for cpu_number=0 to do_vapic_enable function, because it is called only when cpu_number=0. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-09-19serial: check if backed by a physical serial port at realize timePaolo Bonzini1-2/+3
Right now, s->poll_msl may linger at "0" value for an arbitrarily long time, until serial_update_msl is called for the first time. This is unnecessary, and will lead to the s->poll_msl field being unnecessarily migrated. We can call serial_update_msl immediately at realize time (via serial_reset) and be done with it. The memory-mapped UART was already doing that, but not the ISA and PCI variants. Regarding the delta bits, be consistent with what serial_reset does when the serial port is not backed by a physical serial port, and always clear them at reset time. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-09-19serial: reset state at startupPaolo Bonzini1-0/+1
When a serial port is started, its initial state is all zero. Make it consistent with reset state instead. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-09-18target-i386: update fp status fixPavel Dovgalyuk5-11/+18
This patch introduces cpu_set_fpuc() function, which changes fpuc field of the CPU state and calls update_fp_status() function. These calls update status of softfloat library and prevent bugs caused by non-coherent rounding settings of the FPU and softfloat. v2 changes: * Added missed calls and intoduced setter function (as suggested by TeLeMan) Reviewed-by: TeLeMan <geleman@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
2014-09-16hw/dma/i8257: Silence phony error messagePhilipp Hahn2-2/+5
Convert into trace event. Otherwise the message dma: unregistered DMA channel used nchan=0 dma_pos=0 dma_len=1 gets printed every time and fills up the log-file with 50 MiB / minute. Signed-off-by: Philipp Hahn <hahn@univention.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-09-16kvmclock: Ensure time in migration never goes backwardAlexander Graf1-0/+49
When we migrate we ask the kernel about its current belief on what the guest time would be. However, I've seen cases where the kvmclock guest structure indicates a time more recent than the kvm returned time. To make sure we never go backwards, calculate what the guest would have seen as time at the point of migration and use that value instead of the kernel returned one when it's more recent. This bases the view of the kvmclock after migration on the same foundation in host as well as guest. Signed-off-by: Alexander Graf <agraf@suse.de> Cc: qemu-stable@nongnu.org Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-09-16kvmclock: Ensure proper env->tsc value for kvmclock_current_nsec calculationMarcelo Tosatti1-0/+4
Ensure proper env->tsc value for kvmclock_current_nsec calculation. Reported-by: Marcin Gibuła <m.gibula@beyond.pl> Analyzed-by: Marcin Gibuła <m.gibula@beyond.pl> Cc: qemu-stable@nongnu.org Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-09-16Introduce cpu_clean_all_dirtyMarcelo Tosatti4-0/+23
Introduce cpu_clean_all_dirty, to force subsequent cpu_synchronize_all_states to read in-kernel register state. Cc: qemu-stable@nongnu.org Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-09-16pit: fix pit interrupt can't inject into vm after migrationChenLiang1-2/+1
kvm_pit is running in kmod. kvm_pit is going to inject interrupt to vm before cpu_synchronize_all_post_init at dest side. vcpu will lose the pit interrupt, but ack_irq(in kmod) has been 0. ack_irq become 1 after vcpu responds pit interrupt. pit interruptcan inject to vm when ack_irq is 1. By the way, kvm_pit_vm_state_change has save and load state of pit, so pre_save and post_load is unnecessary. Signed-off-by: ChenLiang <chenliang88@huawei.com> Signed-off-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-09-15Merge remote-tracking branch 'remotes/qmp-unstable/queue/qmp' into stagingPeter Maydell2-2/+6
* remotes/qmp-unstable/queue/qmp: exec: file_ram_alloc(): print error when prealloc fails monitor: fix debug print compiling error Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-15Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into stagingPeter Maydell53-279/+704
Block patches # gpg: Signature made Fri 12 Sep 2014 16:09:43 BST using RSA key ID C88F2FD6 # gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" * remotes/kevin/tags/for-upstream: (22 commits) qcow2: Add falloc and full preallocation option raw-posix: Add falloc and full preallocation option qapi: introduce PreallocMode and new PreallocModes full and falloc. block: don't convert file size to sector size block: round up file size to nearest sector iotests: Send the correct fd in socket_scm_helper blockdev: Refuse to drive_del something added with blockdev-add block: extend BLOCK_IO_ERROR with reason string dataplane: fix virtio_blk_data_plane_create() op blocker error path qemu-iotests: Run 025 for Archipelago block driver block/archipelago: Implement bdrv_truncate() block: Make the block accounting functions operate on BlockAcctStats block: rename BlockAcctType members to start with BLOCK_ instead of BDRV_ block: Extract the block accounting code block: Extract the BlockAcctStats structure IDE: MMIO IDE device control should be little endian thread-pool: Drop unnecessary includes xen: Drop redundant bdrv_close() from pci_piix3_xen_ide_unplug() xen_disk: Plug memory leak on error path qemu-io: Clean up openfile() after commit 2e40134 ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-15Merge remote-tracking branch 'remotes/kraxel/tags/pull-console-20140915-1' ↵Peter Maydell2-2/+3
into staging Fix pixman build failure. # gpg: Signature made Mon 15 Sep 2014 07:15:11 BST using RSA key ID D3E87138 # gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" # gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" # gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" * remotes/kraxel/tags/pull-console-20140915-1: configure: check for pixman-1 version pixman: update internal copy to pixman-0.32.6 Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-15configure: check for pixman-1 versionHu Tao1-2/+3
commit a93a3af9 introduces use of PIXMAN_TYPE_RGBA, but it's only available in pixman >= 0.21.8. If pixman doesn't meet the version requirement, qemu will fail to build with following message: qemu/ui/qemu-pixman.c: In function ‘qemu_pixelformat_from_pixman’: qemu/ui/qemu-pixman.c:42: error: ‘PIXMAN_TYPE_RGBA’ undeclared (first use in this function) qemu/ui/qemu-pixman.c:42: error: (Each undeclared identifier is reported only once qemu/ui/qemu-pixman.c:42: error: for each function it appears in.) This patch fixes the problem by checking the pixman version. Signed-off-by: Hu Tao <hutao@cn.fujitsu.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-09-15pixman: update internal copy to pixman-0.32.6Hu Tao1-0/+0
commit a93a3af9 introduces use of PIXMAN_TYPE_RGBA, but it's only available in pixman >= 0.21.8. Although commit f27b2e1d bumped pixman to pixman-0.28.2, but the change was reverted later by 7b1b5d19. This patch updates internal copy of pixman to pixman-0.32.6 to fix the problem. Signed-off-by: Hu Tao <hutao@cn.fujitsu.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-09-12Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell97-220/+757
- Memory: improve error reporting and avoid crashes on hotplug - Build: fixing block/iscsi.so and ranlib warnings on Mac OS X - Migration fixes for x86 - The odd KVM patch. # gpg: Signature made Thu 11 Sep 2014 11:21:10 BST using RSA key ID 9B4D86F2 # gpg: Good signature from "Paolo Bonzini <pbonzini@redhat.com>" # gpg: aka "Paolo Bonzini <bonzini@gnu.org>" * remotes/bonzini/tags/for-upstream: (21 commits) gdbstub: init mon_chr through qemu_chr_alloc pckbd: adding new fields to vmstate mc146818rtc: add missed field to vmstate piix: do not set irq while loading vmstate serial: fixing vmstate for save/restore parallel: adding vmstate for save/restore fdc: adding vmstate for save/restore cpu: init vmstate for ticks and clock offset apic_common: vapic_paddr synchronization fix vl: use QLIST_FOREACH_SAFE to visit change state handlers exec: add parameter errp to gethugepagesize exec: report error when memory < hpagesize hostmem-ram: don't exit qemu if size of memory-backend-ram is way too big memory: add parameter errp to memory_region_init_rom_device memory: add parameter errp to memory_region_init_ram exec: add parameter errp to qemu_ram_alloc and qemu_ram_alloc_from_ptr rules.mak: Fix DSO build by pulling in archive symbols util: Don't link host-utils.o if it's empty util: Move general qemu_getauxval to util/getauxval.c trace: Only link generated-tracers.o with "simple" backend ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12exec: file_ram_alloc(): print error when prealloc failsLuiz Capitulino1-0/+1
If memory allocation fails when using the -mem-prealloc command-line option, QEMU exits without printing any error information to the user: # qemu [...] -m 1G -mem-prealloc -mem-path /dev/hugepages # echo $? 1 This commit adds an error message, so that we print instead: # qemu [...] -m 1G -mem-prealloc -mem-path /dev/hugepages qemu: unable to map backing store for hugepages: Cannot allocate memory Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2014-09-12monitor: fix debug print compiling errorGonglei1-2/+5
error: 'i' undeclared (first use in this function) Signed-off-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2014-09-12Merge remote-tracking branch ↵Peter Maydell24-154/+840
'remotes/pmaydell/tags/pull-target-arm-20140912' into staging target-arm: * add "linux,stdout-path" to the virt DTB * fix a long standing bug with IRQ disabling on Cortex-M CPUs * implement input interrupt logic in the PL061 * fix failure to load correct SP/PC on reset of Cortex-M CPUs if the vector table is not in a ROM-blob-in-RAM * provide flash devices for boot ROMs in the virt board * implement architectural watchpoints * fix misimplementation of Inner Shareable TLB operations that caused instability of guests in TCG SMP configurations * configure PL011 and PL031 in the virt board correctly with level-triggered interrupts rather than edge-triggered * support providing a device tree blob to ROM (firmware) images as well as to kernels # gpg: Signature made Fri 12 Sep 2014 14:19:08 BST using RSA key ID 14360CDE # gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" * remotes/pmaydell/tags/pull-target-arm-20140912: (23 commits) hw/arm/boot: enable DTB support when booting ELF images hw/arm/boot: load device tree to base of DRAM if no -kernel option was passed hw/arm/boot: pass an address limit to and return size from load_dtb() hw/arm/boot: load DTB as a ROM image hw/arm/virt: fix pl011 and pl031 irq flags target-arm: Make *IS TLB maintenance ops affect all CPUs target-arm: Push legacy wildcard TLB ops back into v6 target-arm: Implement minimal DBGVCR, OSDLR_EL1, MDCCSR_EL0 target-arm: Remove comment about MDSCR_EL1 being dummy implementation target-arm: Set DBGDSCR.MOE for debug exceptions taken to AArch32 target-arm: Implement handling of fired watchpoints target-arm: Move extended_addresses_enabled() to internals.h target-arm: Implement setting of watchpoints cpu-exec: Make debug_excp_handler a QOM CPU method exec.c: Record watchpoint fault address and direction exec.c: Provide full set of dummy wp remove functions in user-mode exec.c: Relax restrictions on watchpoint length and alignment hw/arm/virt: Provide flash devices for boot ROMs target-arm: Fix broken indentation in arm_cpu_reest() target-arm: Fix resetting issues on ARMv7-M CPUs ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12qcow2: Add falloc and full preallocation optionHu Tao4-43/+90
preallocation=falloc allocates disk space by posix_fallocate(), preallocation=full allocates disk space by writing zeros to disk. Both modes imply preallocation=metadata. Signed-off-by: Hu Tao <hutao@cn.fujitsu.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-09-12raw-posix: Add falloc and full preallocation optionHu Tao3-19/+91
This patch adds a new option preallocation for raw format, and implements falloc and full preallocation. Signed-off-by: Hu Tao <hutao@cn.fujitsu.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-09-12qapi: introduce PreallocMode and new PreallocModes full and falloc.Hu Tao3-11/+36
This patch prepares for the subsequent patches. Signed-off-by: Hu Tao <hutao@cn.fujitsu.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-09-12block: don't convert file size to sector sizeHu Tao5-23/+22
and avoid converting it back later. Signed-off-by: Hu Tao <hutao@cn.fujitsu.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Benoît Canet <benoit.canet@nodalink.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-09-12block: round up file size to nearest sectorHu Tao21-23/+127
Currently the file size requested by user is rounded down to nearest sector, causing the actual file size could be a bit less than the size user requested. Since some formats (like qcow2) record virtual disk size in bytes, this can make the last few bytes cannot be accessed. This patch fixes it by rounding up file size to nearest sector so that the actual file size is no less than the requested file size. Signed-off-by: Hu Tao <hutao@cn.fujitsu.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-09-12hw/arm/boot: enable DTB support when booting ELF imagesArd Biesheuvel1-2/+20
Add support for loading DTB images when booting ELF images using -kernel. If there are no conflicts with the placement of the ELF segments, the DTB image is loaded at the base of RAM. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Message-id: 1410453915-9344-5-git-send-email-ard.biesheuvel@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12hw/arm/boot: load device tree to base of DRAM if no -kernel option was passedArd Biesheuvel1-0/+10
If we are running the 'virt' machine, we may have a device tree blob but no kernel to supply it to if no -kernel option was passed. In that case, copy it to the base of RAM where it can be picked up by a bootloader. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Message-id: 1410453915-9344-4-git-send-email-ard.biesheuvel@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12hw/arm/boot: pass an address limit to and return size from load_dtb()Ard Biesheuvel1-3/+31
Add an address limit input parameter to load_dtb() so that we can tell load_dtb() how much memory the dtb is allowed to consume. If the dtb doesn't fit, return 0, otherwise return the actual size of the loaded dtb. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Message-id: 1410453915-9344-3-git-send-email-ard.biesheuvel@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12hw/arm/boot: load DTB as a ROM imageArd Biesheuvel1-1/+4
In order to make the device tree blob (DTB) available in memory not only at first boot, but also after system reset, use rom_blob_add_fixed() to install it into memory. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Message-id: 1410453915-9344-2-git-send-email-ard.biesheuvel@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12hw/arm/virt: fix pl011 and pl031 irq flagsPeter Maydell1-2/+2
The pl011 and pl031 devices both use level triggered interrupts, but the device tree we construct was incorrectly telling the kernel to configure the GIC to treat them as edge triggered. This meant that output from the pl011 would hang after a while. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1410274423-9461-1-git-send-email-peter.maydell@linaro.org Acked-by: Christoffer Dall <christoffer.dall@linaro.org> Cc: qemu-stable@nongnu.org
2014-09-12target-arm: Make *IS TLB maintenance ops affect all CPUsPeter Maydell1-12/+89
The ARM architecture defines that the "IS" variants of TLB maintenance operations must affect all TLBs in the Inner Shareable domain, which for us means all CPUs. We were incorrectly implementing these to only affect the current CPU, which meant that SMP TCG operation was unstable. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1410274883-9578-3-git-send-email-peter.maydell@linaro.org Cc: qemu-stable@nongnu.org
2014-09-12target-arm: Push legacy wildcard TLB ops back into v6Peter Maydell1-47/+55
When we implemented ARMv8 in QEMU we retained our legacy loose wildcarded decoding of the TLB maintenance operations for v7 and earlier CPUs and provided the correct stricter decode for v8. However the loose decode is in fact wrong for v7MP, because it doesn't correctly implement the operations which must apply to every CPU in the Inner Shareable domain. Move the legacy wildcarding from the not_v8 reginfo array into the not_v7 array, and move the strictly decoded operations from the v8 reginfo to v7 or v7mp arrays as appropriate. Cache and TLB lockdown legacy wildcarding remains in the not_v8 array for the moment. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1410274883-9578-2-git-send-email-peter.maydell@linaro.org Cc: qemu-stable@nongnu.org
2014-09-12target-arm: Implement minimal DBGVCR, OSDLR_EL1, MDCCSR_EL0Peter Maydell1-0/+19
Implement debug registers DBGVCR, OSDLR_EL1 and MDCCSR_EL0 (as dummy or limited-functionality). 32 bit Linux kernels will access these at startup so they are required for breakpoints and watchpoints to be supported. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12target-arm: Remove comment about MDSCR_EL1 being dummy implementationPeter Maydell1-3/+1
MDSCR_EL1 has actual functionality now; remove the out of date comment that claims it is a dummy implementation. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12target-arm: Set DBGDSCR.MOE for debug exceptions taken to AArch32Peter Maydell1-0/+26
For debug exceptions taken to AArch32 we have to set the DBGDSCR.MOE (Method Of Entry) bits; we can identify the kind of debug exception from the information in exception.syndrome. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12target-arm: Implement handling of fired watchpointsPeter Maydell4-1/+204
Implement the ARM debug exception handler for dealing with fired watchpoints. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12target-arm: Move extended_addresses_enabled() to internals.hPeter Maydell2-11/+11
Move the utility function extended_addresses_enabled() into internals.h; we're going to need to call it from op_helper.c. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12target-arm: Implement setting of watchpointsPeter Maydell5-3/+149
Implement support for setting QEMU watchpoints based on the values the guest writes to the ARM architected watchpoint registers. (We do not yet report the firing of the watchpoints to the guest, so they will just be ignored.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12cpu-exec: Make debug_excp_handler a QOM CPU methodPeter Maydell13-28/+27
Make the debug_excp_handler target specific hook into a QOM CPU method. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12exec.c: Record watchpoint fault address and directionPeter Maydell2-2/+11
When we check whether we've hit a watchpoint we know the address that we were attempting to access and whether it was a read or a write. Record this information in the CPUWatchpoint struct so that target-specific code can report it to the guest. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net>
2014-09-12exec.c: Provide full set of dummy wp remove functions in user-modePeter Maydell1-0/+10
We already provide dummy versions of the cpu_watchpoint_insert and cpu_watchpoint_remove_all functions when CONFIG_USER_ONLY is defined. Complete the set by providing cpu_watchpoint_remove and cpu_watchpoint_remove_by_ref as well. This allows target-* code using these functions to avoid some ifdeffery. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net>
2014-09-12exec.c: Relax restrictions on watchpoint length and alignmentPeter Maydell3-16/+33
The current implementation of watchpoints requires that they have a power of 2 length which is not greater than TARGET_PAGE_SIZE and that their address is a multiple of their length. Watchpoints on ARM don't fit these restrictions, so change the implementation so they can be relaxed. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net>
2014-09-12hw/arm/virt: Provide flash devices for boot ROMsPeter Maydell1-0/+70
Add two flash devices to the virt board, so that it can be used for running guests which want a bootrom image such as UEFI. We provide two flash devices to make it more convenient to provide both a read-only UEFI image and a read-write place to store guest-set UEFI config variables. The '-bios' command line option is set up to provide an image for the first of the two flash devices. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1409930126-28449-2-git-send-email-ard.biesheuvel@linaro.org
2014-09-12target-arm: Fix broken indentation in arm_cpu_reest()Martin Galvan1-1/+1
Fix a single misindented line in arm_cpu_reset(). Signed-off-by: Martin Galvan <martin.galvan@tallertechnologies.com> [PMM: split this out from the previous commit] Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12target-arm: Fix resetting issues on ARMv7-M CPUsMartin Galvan1-10/+22
When calling qemu_system_reset after startup on a Cortex-M CPU, the initial values of PC, MSP and the Thumb bit weren't being set correctly if the vector table was in ROM. In particular, since Thumb was 0, a Usage Fault would arise immediately after trying to execute any instruction on a Cortex-M. Signed-off-by: Martin Galvan <martin.galvan@tallertechnologies.com> Message-id: CAOKbPbaLt-LJsAKkQdOE0cs9Xx4OWrUfpDhATXPSdtuNw2xu_A@mail.gmail.com [PMM: removed an incorrect comment] Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12pl061: implement input interrupt logicColin Leitner1-14/+45
This patch adds the missing input interrupt logic to the pl061 GPIO device. To keep the floating output pins to stay high, the old state variable had to be split into two separate ones for input and output - which brings the vmstate version to 3. Edge level interrupts and I/O were tested under Linux 3.14. Level interrupt handling hasn't been tested. Signed-off-by: Colin Leitner <colin.leitner@googlemail.com> Message-id: 54024FD2.9080204@gmail.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12cpu-exec.c: Allow disabling of IRQs on ARM Cortex-M CPUsDavid Hoover1-2/+2
Correct an error in the logic for deciding whether we can take an IRQ interrupt which meant that on M profile cores it was never possible to disable them. The design here is still bogus in that M profile doesn't have separate "IRQ" and "FIQ", which are an A/R profile concept; we should ideally implement the proper priority based scheme. Signed-off-by: David Hoover <spm@boiteauxlettres.sent.at> [PMM: Wrote a proper commit message] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12hw/arm/virt: add linux, stdout-path to /chosen DT nodeArd Biesheuvel1-0/+2
Add a property "linux,stdout-path" to the /chosen DT node and make it point to the emulated UART. This allows users such as the Linux kernel to produce console output without the need to pass console= or earlycon=pl011,0x... command line arguments. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Message-id: 1409317439-29349-1-git-send-email-ard.biesheuvel@linaro.org Reviewed-by: Rob Herring <rob.herring@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12libqos virtio: Increase ISR timeoutMarc Marí1-2/+2
Increase the clock step to avoid Travis failure in some builds due to overagressive timeout. Signed-off-by: Marc Marí <marc.mari.barcelo@gmail.com> Message-id: 1410428416-5046-1-git-send-email-marc.mari.barcelo@gmail.com Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12iotests: Send the correct fd in socket_scm_helperStratos Psomadakis1-1/+1
Make sure to pass the correct fd via SCM_RIGHTS in socket_scm_helper.c (i.e. fd_to_send, not socket-fd). Signed-off-by: Stratos Psomadakis <psomas@grnet.gr> Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-09-11blockdev: Refuse to drive_del something added with blockdev-addMarkus Armbruster1-1/+9
For some device models, the guest can prevent unplug. Some users need a way to forcibly revoke device model access to the block backend then, so the underlying images can be safely used for something else. drive_del lets you do that. Unfortunately, it conflates revoking access with destroying the backend. Commit 9063f81 made drive_del immediately destroy the root BDS. Nice: the device name becomes available for reuse immediately. Not so nice: the device model's pointer to the root BDS dangles, and we're prone to crash when the memory gets reused. Commit d22b2f4 fixed that by hiding the root BDS instead of destroying it. Destruction only happens on unplug. "Hiding" means removing it from bdrv_states and graph_bdrv_states; see bdrv_make_anon(). This "destroy on revoke" is a misfeature we don't want to carry forward to blockdev-add, just like "destroy on unplug" (commit 2d246f0). So make drive_del fail on anything added with blockdev-add. We'll add separate QMP commands to revoke device model access and to destroy backends. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-09-11block: extend BLOCK_IO_ERROR with reason stringLuiz Capitulino2-2/+8
BLOCK_IO_ERROR events are logged by libvirt, which helps with post mortem analysis of guests. However, one information that we miss today is a human readable string describing the cause of the I/O error. This commit adds that string it to BLOCK_IO_ERROR. Note that this string is a debugging aid for humans, meaning that it should not parsed by applications. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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