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2013-05-14osdep: introduce qemu_anon_ram_free to free qemu_anon_ram_alloc-ed memoryPaolo Bonzini1-6/+2
We switched from qemu_memalign to mmap() but then we don't modify qemu_vfree() to do a munmap() over free(). Which we cannot do because qemu_vfree() frees memory allocated by qemu_{mem,block}align. Introduce a new function that does the munmap(), luckily the size is available in the RAMBlock. Reported-by: Amos Kong <akong@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Amos Kong <akong@redhat.com> Message-id: 1368454796-14989-3-git-send-email-pbonzini@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-05-14osdep, kvm: rename low-level RAM allocation functionsPaolo Bonzini1-3/+3
This is preparatory to the introduction of a separate freeing API. Reported-by: Amos Kong <akong@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Amos Kong <akong@redhat.com> Message-id: 1368454796-14989-2-git-send-email-pbonzini@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-05-01cpu: Add qemu_for_each_cpu()Michael S. Tsirkin1-0/+10
Wrapper to avoid open-coded loops and to make CPUState iteration independent of CPUArchState. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-04-08hw: move headers to include/Paolo Bonzini1-1/+1
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>
2013-03-26exec: assert that RAMBlock size is non-zeroStefan Hajnoczi1-0/+2
find_ram_offset() does not handle size=0 gracefully. It hands out the same RAMBlock offset multiple times, leading to obscure failures later on. Add an assert to warn early if something is incorrectly allocating a zero size RAMBlock. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2013-03-14Merge remote-tracking branch 'afaerber/qom-cpu' into stagingAnthony Liguori1-14/+16
# By Andreas Färber (16) and Igor Mammedov (1) # Via Andreas Färber * afaerber/qom-cpu: target-lm32: Update VMStateDescription to LM32CPU target-arm: Override do_interrupt for ARMv7-M profile cpu: Replace do_interrupt() by CPUClass::do_interrupt method cpu: Pass CPUState to cpu_interrupt() exec: Pass CPUState to cpu_reset_interrupt() cpu: Move halted and interrupt_request fields to CPUState target-cris/helper.c: Update Coding Style target-i386: Update VMStateDescription to X86CPU cpu: Introduce cpu_class_set_vmsd() cpu: Register VMStateDescription through CPUState stubs: Add a vmstate_dummy struct for CONFIG_USER_ONLY vmstate: Make vmstate_register() static inline target-sh4: Move PVR/PRR/CVR into SuperHCPUClass target-sh4: Introduce SuperHCPU subclasses cpus: Replace open-coded CPU loop in qmp_memsave() with qemu_get_cpu() monitor: Use qemu_get_cpu() in monitor_set_cpu() cpu: Fix qemu_get_cpu() to return NULL if CPU not found
2013-03-12exec: make -mem-path filenames deterministicPeter Feiner1-1/+12
Adds ramblocks' names to their backing files when using -mem-path. Eases introspection and debugging. Signed-off-by: Peter Feiner <peter@gridcentric.ca> Message-id: 1362423265-15855-1-git-send-email-peter@gridcentric.ca Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-12cpu: Pass CPUState to cpu_interrupt()Andreas Färber1-1/+1
Move it to qom/cpu.h to avoid issues with include order. Change pc_acpi_smi_interrupt() opaque to X86CPU. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-03-12exec: Pass CPUState to cpu_reset_interrupt()Andreas Färber1-7/+0
Move it to qom/cpu.c to avoid build failures depending on include order of cpu-qom.h and exec/cpu-all.h. Change opaques of various ..._irq_handler() functions to the appropriate CPU type to facilitate using cpu_reset_interrupt(). Fix Coding Style issues while at it (missing braces, indentation). Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-03-12cpu: Move halted and interrupt_request fields to CPUStateAndreas Färber1-7/+9
Both fields are used in VMState, thus need to be moved together. Explicitly zero them on reset since they were located before breakpoints. Pass PowerPCCPU to kvmppc_handle_halt(). Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-03-12cpu: Register VMStateDescription through CPUStateAndreas Färber1-2/+9
In comparison to DeviceClass::vmsd, CPU VMState is split in two, "cpu_common" and "cpu", and uses cpu_index as instance_id instead of -1. Therefore add a CPU-specific CPUClass::vmsd field. Unlike the legacy CPUArchState registration, rather register CPUState. Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
2013-03-12cpu: Fix qemu_get_cpu() to return NULL if CPU not foundIgor Mammedov1-1/+1
Commit 55e5c2850 breaks CPU not found return value, and returns CPU corresponding to the last non NULL env. Fix it by returning CPU only if env is not NULL, otherwise CPU is not found and function should return NULL. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-03-03Handle CPU interrupts by inline checking of a flagPeter Maydell1-1/+1
Fix some of the nasty TCG race conditions and crashes by implementing cpu_exit() as setting a flag which is checked at the start of each TB. This avoids crashes if a thread or signal handler calls cpu_exit() while the execution thread is itself modifying the TB graph (which may happen in system emulation mode as well as in linux-user mode with a multithreaded guest binary). This fixes the crashes seen in LP:668799; however there are another class of crashes described in LP:1098729 which stem from the fact that in linux-user with a multithreaded guest all threads will use and modify the same global TCG date structures (including the generated code buffer) without any kind of locking. This means that multithreaded guest binaries are still in the "unsupported" category. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-02-16cputlb: Pass CPUState to cpu_unlink_tb()Andreas Färber1-1/+1
CPUArchState is no longer needed. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-02-16cpu: Move exit_request field to CPUStateAndreas Färber1-1/+3
Since it was located before breakpoints field, it needs to be reset. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-01-19Replace non-portable asprintf by g_strdup_printfStefan Weil1-5/+3
g_strdup_printf already handles OOM errors, so some error handling in QEMU code can be removed. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-01-15exec: Return CPUState from qemu_get_cpu()Andreas Färber1-3/+3
Move the declaration to qemu/cpu.h and add documentation. The implementation still depends on CPUArchState for CPU iteration. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-01-15cpu: Move cpu_index field to CPUStateAndreas Färber1-6/+7
Note that target-alpha accesses this field from TCG, now using a negative offset. Therefore the field is placed last in CPUState. Pass PowerPCCPU to [kvm]ppc_fixup_cpu() to facilitate this change. Move common parts of mips cpu_state_reset() to mips_cpu_reset(). Acked-by: Richard Henderson <rth@twiddle.net> (for alpha) [AF: Rebased onto ppc CPU subclasses and openpic changes] Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-01-15cpu: Move numa_node field to CPUStateAndreas Färber1-3/+1
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-01-12stubs: fully replace qemu-tool.c and qemu-user.cPaolo Bonzini1-1/+1
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-01-06Revert "virtio-pci: replace byte swap hack"Blue Swirl1-0/+18
This reverts commit 9807caccd605d09a72495637959568d690e10175. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-01-06virtio-pci: replace byte swap hackBlue Swirl1-18/+0
Remove byte swaps by declaring the config space as native endian. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-20protect the ramlist with a separate mutexUmesh Deshpande1-2/+27
Add the new mutex that protects shared state between ram_save_live and the iothread. If the iothread mutex has to be taken together with the ramlist mutex, the iothread shall always be _outside_. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Umesh Deshpande <udeshpan@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Orit Wasserman <owasserm@redhat.com>
2012-12-20add a version number to ram_listUmesh Deshpande1-0/+4
This will be used to detect if last_block might have become invalid across different calls to ram_save_live. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Umesh Deshpande <udeshpan@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Orit Wasserman <owasserm@redhat.com>
2012-12-20exec: sort the memory from biggest to smallestPaolo Bonzini1-2/+12
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20exec: change RAM list to a TAILQPaolo Bonzini1-17/+17
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20exec: change ramlist from MRU order to a 1-item cachePaolo Bonzini1-21/+28
Most of the time, only 2 items will be active (from/to for a string operation, or code/data). But TCG guests likely won't have gigabytes of memory, so this actually goes down to 1 item. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-19softmmu: move include files to include/sysemu/Paolo Bonzini1-3/+3
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19misc: move include files to include/qemu/Paolo Bonzini1-3/+3
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19exec: move include files to include/exec/Paolo Bonzini1-4/+4
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19janitor: do not rely on indirect inclusions of or from qemu-char.hPaolo Bonzini1-0/+1
Various header files rely on qemu-char.h including qemu-config.h or main-loop.h, but they really do not need qemu-char.h at all (particularly interesting is the case of the block layer!). Clean this up, and also add missing inclusions of qemu-char.h itself. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-16exec: move TB handling to translate-all.cBlue Swirl1-1711/+2
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-16exec: extract TB watchpoint checkBlue Swirl1-8/+14
Will be moved by the next patch. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-16exec: fix coding styleBlue Swirl1-68/+110
Fix coding style in areas to be moved by later patches. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-08exec: Advise huge pages for the TCG code gen bufferRichard Henderson1-0/+2
After allocating 32MB or more contiguous memory, huge pages would seem to be ideal. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-11-12dma: Define dma_context_memory and use in sysbus-ohciPeter Maydell1-0/+5
Define a new global dma_context_memory which is a DMAContext corresponding to the global address_space_memory AddressSpace. This can be used by sysbus peripherals like sysbus-ohci which need to do DMA. In particular, use it in the sysbus-ohci device, which fixes a segfault when attempting to use that device. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2012-11-03Merge branch 'trivial-patches' of git://github.com/stefanha/qemuBlue Swirl1-6/+9
* 'trivial-patches' of git://github.com/stefanha/qemu: pc: Drop redundant test for ROM memory region exec: make some functions static target-ppc: make some functions static ppc: add missing static vnc: add missing static vl.c: add missing static target-sparc: make do_unaligned_access static m68k: Return semihosting errno values correctly cadence_uart: More debug information Conflicts: target-m68k/m68k-semi.c
2012-11-03tcg: Add extended GETPC mechanism for MMU helpers with ldst optimizationYeongkyoon Lee1-0/+11
Add GETPC_EXT which is used by MMU helpers to selectively calculate the code address of accessing guest memory when called from a qemu_ld/st optimized code or a C function. Currently, it supports only i386 and x86-64 hosts. Signed-off-by: Yeongkyoon Lee <yeongkyoon.lee@samsung.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-11-01exec: make some functions staticBlue Swirl1-6/+9
Signed-off-by: Blue Swirl <blauwirbel@gmail.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2012-10-31cpu: Move thread_id to CPUStateAndreas Färber1-1/+4
Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-10-31cpus: Pass CPUState to qemu_cpu_kick()Andreas Färber1-1/+1
CPUArchState is no longer needed there. Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-10-31cpus: Pass CPUState to qemu_cpu_is_self()Andreas Färber1-1/+2
Change return type to bool, move to include/qemu/cpu.h and add documentation. Signed-off-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Igor Mammedov <imammedo@redhat.com> [AF: Updated new caller qemu_in_vcpu_thread()]
2012-10-23Rename target_phys_addr_t to hwaddrAvi Kivity1-81/+81
target_phys_addr_t is unwieldly, violates the C standard (_t suffixes are reserved) and its purpose doesn't match the name (most target_phys_addr_t addresses are not target specific). Replace it with a finger-friendly, standards conformant hwaddr. Outstanding patchsets can be fixed up with the command git rebase -i --exec 'find -name "*.[ch]" | xargs s/target_phys_addr_t/hwaddr/g' origin Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-10-22Call MADV_HUGEPAGE for guest RAM allocationsLuiz Capitulino1-0/+1
This makes it possible for QEMU to use transparent huge pages (THP) when transparent_hugepage/enabled=madvise. Otherwise THP is only used when it's enabled system wide. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-10-22Merge remote-tracking branch 'quintela/migration-next-20121017' into stagingAnthony Liguori1-1/+1
* quintela/migration-next-20121017: (41 commits) cpus: create qemu_in_vcpu_thread() savevm: make qemu_file_put_notify() return errors savevm: un-export qemu_file_set_error() block-migration: handle errors with the return codes correctly block-migration: Switch meaning of return value block-migration: make flush_blks() return errors buffered_file: buffered_put_buffer() don't need to set last_error savevm: Only qemu_fflush() can generate errors savevm: make qemu_fill_buffer() be consistent savevm: unexport qemu_ftell() savevm: unfold qemu_fclose_internal() savevm: make qemu_fflush() return an error code savevm: Remove qemu_fseek() virtio-net: use qemu_get_buffer() in a temp buffer savevm: unexport qemu_fflush migration: make migrate_fd_wait_for_unfreeze() return errors buffered_file: make buffered_flush return the error code buffered_file: callers of buffered_flush() already check for errors buffered_file: We can access directly to bandwidth_limit buffered_file: unfold migrate_fd_close ...
2012-10-22Merge remote-tracking branch 'qemu-kvm/memory/dma' into stagingAnthony Liguori1-184/+133
* qemu-kvm/memory/dma: (23 commits) pci: honor PCI_COMMAND_MASTER pci: give each device its own address space memory: add address_space_destroy() dma: make dma access its own address space memory: per-AddressSpace dispatch s390: avoid reaching into memory core internals memory: use AddressSpace for MemoryListener filtering memory: move tcg flush into a tcg memory listener memory: move address_space_memory and address_space_io out of memory core memory: manage coalesced mmio via a MemoryListener xen: drop no-op MemoryListener callbacks kvm: drop no-op MemoryListener callbacks xen_pt: drop no-op MemoryListener callbacks vfio: drop no-op MemoryListener callbacks memory: drop no-op MemoryListener callbacks memory: provide defaults for MemoryListener operations memory: maintain a list of address spaces memory: export AddressSpace memory: prepare AddressSpace for exporting xen_pt: use separate MemoryListeners for memory and I/O ...
2012-10-22memory: add address_space_destroy()Avi Kivity1-0/+10
Since address spaces can be created dynamically by device hotplug, they can also be destroyed dynamically. Signed-off-by: Avi Kivity <avi@redhat.com>
2012-10-22memory: per-AddressSpace dispatchAvi Kivity1-67/+107
Currently we use a global radix tree to dispatch memory access. This only works with a single address space; to support multiple address spaces we make the radix tree a member of AddressSpace (via an intermediate structure AddressSpaceDispatch to avoid exposing too many internals). A side effect is that address_space_io also gains a dispatch table. When we remove all the pre-memory-API I/O registrations, we can use that for dispatching I/O and get rid of the original I/O dispatch. Signed-off-by: Avi Kivity <avi@redhat.com>
2012-10-22memory: use AddressSpace for MemoryListener filteringAvi Kivity1-5/+5
Using the AddressSpace type reduces confusion, as you can't accidentally supply the MemoryRegion you're interested in. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-10-22memory: move tcg flush into a tcg memory listenerAvi Kivity1-2/+6
We plan to make the core listener listen to all address spaces; this will cause many more flushes than necessary. Prepare for that by moving the flush into a tcg-specific listener. Later we can avoid registering the listener if tcg is disabled. Signed-off-by: Avi Kivity <avi@redhat.com>
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