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2019-02-05unify len and addr type for memory/address APIsLi Zhijian1-11/+11
Some address/memory APIs have different type between 'hwaddr/target_ulong addr' and 'int len'. It is very unsafe, especially some APIs will be passed a non-int len by caller which might cause overflow quietly. Below is an potential overflow case: dma_memory_read(uint32_t len) -> dma_memory_rw(uint32_t len) -> dma_memory_rw_relaxed(uint32_t len) -> address_space_rw(int len) # len overflow CC: Paolo Bonzini <pbonzini@redhat.com> CC: Peter Crosthwaite <crosthwaite.peter@gmail.com> CC: Richard Henderson <rth@twiddle.net> CC: Peter Maydell <peter.maydell@linaro.org> CC: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-29memory: add memory_region_flush_rom_device()Stefan Hajnoczi1-0/+18
ROM devices go via MemoryRegionOps->write() callbacks for write operations and do not dirty/invalidate that memory. Device emulation must be able to mark memory ranges that have been modified internally (e.g. using memory_region_get_ram_ptr()). Introduce the memory_region_flush_rom_device() API for this purpose. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 20190123212234.32068-2-stefanha@redhat.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> [PMM: fix block comment style] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-01-11qemu/queue.h: simplify reverse access to QTAILQPaolo Bonzini1-1/+1
The new definition of QTAILQ does not require passing the headname, remove it. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11qemu/queue.h: leave head structs anonymous unless necessaryPaolo Bonzini1-2/+2
Most list head structs need not be given a name. In most cases the name is given just in case one is going to use QTAILQ_LAST, QTAILQ_PREV or reverse iteration, but this does not apply to lists of other kinds, and even for QTAILQ in practice this is only rarely needed. In addition, we will soon reimplement those macros completely so that they do not need a name for the head struct. So clean up everything, not giving a name except in the rare case where it is necessary. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-12-14Rename cpu_physical_memory_write_rom() to address_space_write_rom()Peter Maydell1-0/+26
The API of cpu_physical_memory_write_rom() is odd, because it takes an AddressSpace, unlike all the other cpu_physical_memory_* access functions. Rename it to address_space_write_rom(), and bring its API into line with address_space_write(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Message-id: 20181122133507.30950-3-peter.maydell@linaro.org
2018-11-06memory: learn about non-volatile memory regionMarc-André Lureau1-0/+25
Add a new flag to mark memory region that are used as non-volatile, by NVDIMM for example. That bit is propagated down to the flat view, and reflected in HMP info mtree with a "nv-" prefix on the memory type. This way, guest_phys_blocks_region_add() can skip the NV memory regions for dumps and TCG memory clear in a following patch. Cc: dgilbert@redhat.com Cc: imammedo@redhat.com Cc: pbonzini@redhat.com Cc: guangrong.xiao@linux.intel.com Cc: mst@redhat.com Cc: xiaoguangrong.eric@gmail.com Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20181003114454.5662-2-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-26memory.h: fix typos in commentsLi Qiang1-3/+3
Signed-off-by: Li Qiang <liq3ea@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <1539080467-2976-1-git-send-email-liq3ea@gmail.com> [lv: s/types/typos/] Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-10-19target-i386 : add coalesced_pio APIPeng Hao1-2/+2
the primary API realization. Signed-off-by: Peng Hao <peng.hao2@zte.com.cn> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <1539795177-21038-3-git-send-email-peng.hao2@zte.com.cn> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-02memory: Remove old_mmio accessorsPeter Maydell1-5/+0
Now that all the users of old_mmio MemoryRegion accessors have been converted, we can remove the core code support. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20180824170422.5783-2-peter.maydell@linaro.org> Based-on: <20180802174042.29234-1-peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-02hostmem-file: make available memory-backend-file on POSIX-based hostsHikaru Nishida1-1/+1
Before this change, memory-backend-file object is valid for Linux hosts only because hostmem-file.c is compiled only on Linux hosts. However, other POSIX-based hosts (such as macOS) can support memory-backend-file object in the same way as on Linux hosts. This patch makes hostmem-file.c and related functions to be compiled on all POSIX-based hosts to make available memory-backend-file on them. Signed-off-by: Hikaru Nishida <hikarupsp@gmail.com> Message-Id: <20180924123205.29651-1-hikarupsp@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-08-21Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into stagingPeter Maydell1-2/+29
pc: fixes This includes nvdimm persistence fixes queued before the release. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> # gpg: Signature made Mon 20 Aug 2018 11:38:11 BST # gpg: using RSA key 281F0DB8D28D5469 # gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" # gpg: aka "Michael S. Tsirkin <mst@redhat.com>" # Primary key fingerprint: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67 # Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469 * remotes/mst/tags/for_upstream: migration/ram: ensure write persistence on loading all data to PMEM. migration/ram: Add check and info message to nvdimm post copy. mem/nvdimm: ensure write persistence to PMEM in label emulation hostmem-file: add the 'pmem' option configure: add libpmem support memory, exec: switch file ram allocation functions to 'flags' parameters memory, exec: Expose all memory block related flags. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-08-20memory: Remove MMIO request_ptr APIsPeter Maydell1-35/+0
Remove the obsolete MMIO request_ptr APIs; they have no users now. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: KONRAD Frederic <frederic.konrad@adacore.com> Message-id: 20180817114619.22354-3-peter.maydell@linaro.org
2018-08-10hostmem-file: add the 'pmem' optionJunyan He1-0/+4
When QEMU emulates vNVDIMM labels and migrates vNVDIMM devices, it needs to know whether the backend storage is a real persistent memory, in order to decide whether special operations should be performed to ensure the data persistence. This boolean option 'pmem' allows users to specify whether the backend storage of memory-backend-file is a real persistent memory. If 'pmem=on', QEMU will set the flag RAM_PMEM in the RAM block of the corresponding memory region. If 'pmem' is set while lack of libpmem support, a error is generated. Signed-off-by: Junyan He <junyan.he@intel.com> Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-08-10memory, exec: switch file ram allocation functions to 'flags' parametersJunyan He1-2/+5
As more flag parameters besides the existing 'share' are going to be added to following functions memory_region_init_ram_from_file qemu_ram_alloc_from_fd qemu_ram_alloc_from_file let's switch them to use the 'flags' parameters so as to ease future flag additions. The existing 'share' flag is converted to the RAM_SHARED bit in ram_flags, and other flag bits are ignored by above functions right now. Signed-off-by: Junyan He <junyan.he@intel.com> Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2018-08-10memory, exec: Expose all memory block related flags.Junyan He1-0/+20
We need to use these flags in other files rather than just in exec.c, For example, RAM_SHARED should be used when create a ram block from file. We expose them the exec/memory.h Signed-off-by: Junyan He <junyan.he@intel.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-06-28memory/hmp: Print owners/parents in "info mtree"Alexey Kardashevskiy1-1/+1
This adds owners/parents (which are the same, just occasionally owner==NULL) printing for memory regions; a new '-o' flag enabled new output. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Message-Id: <20180604032511.6980-1-aik@ozlabs.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-06-15iommu: Add IOMMU index argument to translate methodPeter Maydell1-1/+2
Add an IOMMU index argument to the translate method of IOMMUs. Since all of our current IOMMU implementations support only a single IOMMU index, this has no effect on the behaviour. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 20180604152941.20374-4-peter.maydell@linaro.org
2018-06-15iommu: Add IOMMU index argument to notifier APIsPeter Maydell1-1/+6
Add support for multiple IOMMU indexes to the IOMMU notifier APIs. When initializing a notifier with iommu_notifier_init(), the caller must pass the IOMMU index that it is interested in. When a change happens, the IOMMU implementation must pass memory_region_notify_iommu() the IOMMU index that has changed and that notifiers must be called for. IOMMUs which support only a single index don't need to change. Callers which only really support working with IOMMUs with a single index can use the result of passing MEMTXATTRS_UNSPECIFIED to memory_region_iommu_attrs_to_index(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 20180604152941.20374-3-peter.maydell@linaro.org
2018-06-15iommu: Add IOMMU index concept to IOMMU APIPeter Maydell1-0/+55
If an IOMMU supports mappings that care about the memory transaction attributes, then it no longer has a unique address -> output mapping, but more than one. We can represent these using an IOMMU index, analogous to TCG's mmu indexes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 20180604152941.20374-2-peter.maydell@linaro.org
2018-06-01Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell1-23/+0
* Linux header upgrade (Peter) * firmware.json definition (Laszlo) * IPMI migration fix (Corey) * QOM improvements (Alexey, Philippe, me) * Memory API cleanups (Jay, me, Tristan, Peter) * WHPX fixes and improvements (Lucian) * Chardev fixes (Marc-André) * IOMMU documentation improvements (Peter) * Coverity fixes (Peter, Philippe) * Include cleanup (Philippe) * -clock deprecation (Thomas) * Disable -sandbox unless CONFIG_SECCOMP (Yi Min Zhao) * Configurability improvements (me) # gpg: Signature made Fri 01 Jun 2018 17:42:13 BST # gpg: using RSA key BFFBD25F78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" # Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1 # Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83 * remotes/bonzini/tags/for-upstream: (56 commits) hw: make virtio devices configurable via default-configs/ hw: allow compiling out SCSI memory: Make operations using MemoryRegionIoeventfd struct pass by pointer. char: Remove unwanted crlf conversion qdev: Remove DeviceClass::init() and ::exit() qdev: Simplify the SysBusDeviceClass::init path hw/i2c: Use DeviceClass::realize instead of I2CSlaveClass::init hw/i2c/smbus: Use DeviceClass::realize instead of SMBusDeviceClass::init target/i386/kvm.c: Remove compatibility shim for KVM_HINTS_REALTIME Update Linux headers to 4.17-rc6 target/i386/kvm.c: Handle renaming of KVM_HINTS_DEDICATED scripts/update-linux-headers: Handle kernel license no longer being one file scripts/update-linux-headers: Handle __aligned_u64 virtio-gpu-3d: Define VIRTIO_GPU_CAPSET_VIRGL2 elsewhere gdbstub: Prevent fd leakage docs/interop: add "firmware.json" ipmi: Use proper struct reference for KCS vmstate vmstate: Add a VSTRUCT type tcg: remove softfloat from --disable-tcg builds qemu-options: Mark the non-functional -clock option as deprecated ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-01memory: get rid of memory_region_init_reservationPaolo Bonzini1-23/+0
The function has been deprecated for 2.5 years, and there are just a handful of users. Convert them to memory_region_init_io with NULL callbacks, and while at it pass the right device as the owner. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-06-01memory.h: Fix typo in documentation commentPeter Maydell1-1/+1
Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20180515134835.3409-1-peter.maydell@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-05-31Make address_space_get_iotlb_entry() take a MemTxAttrs argumentPeter Maydell1-1/+1
As part of plumbing MemTxAttrs down to the IOMMU translate method, add MemTxAttrs as an argument to address_space_get_iotlb_entry(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180521140402.23318-12-peter.maydell@linaro.org
2018-05-31Make flatview_translate() take a MemTxAttrs argumentPeter Maydell1-3/+4
As part of plumbing MemTxAttrs down to the IOMMU translate method, add MemTxAttrs as an argument to flatview_translate(); all its callers now have attrs available. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180521140402.23318-11-peter.maydell@linaro.org
2018-05-31Make MemoryRegion valid.accepts callback take a MemTxAttrs argumentPeter Maydell1-1/+2
As part of plumbing MemTxAttrs down to the IOMMU translate method, add MemTxAttrs as an argument to the MemoryRegion valid.accepts callback. We'll need this for subpage_accepts(). We could take the approach we used with the read and write callbacks and add new a new _with_attrs version, but since there are so few implementations of the accepts hook we just change them all. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180521140402.23318-9-peter.maydell@linaro.org
2018-05-31Make address_space_access_valid() take a MemTxAttrs argumentPeter Maydell1-1/+3
As part of plumbing MemTxAttrs down to the IOMMU translate method, add MemTxAttrs as an argument to address_space_access_valid(). Its callers either have an attrs value to hand, or don't care and can use MEMTXATTRS_UNSPECIFIED. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180521140402.23318-6-peter.maydell@linaro.org
2018-05-31Make address_space_map() take a MemTxAttrs argumentPeter Maydell1-1/+2
As part of plumbing MemTxAttrs down to the IOMMU translate method, add MemTxAttrs as an argument to address_space_map(). Its callers either have an attrs value to hand, or don't care and can use MEMTXATTRS_UNSPECIFIED. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180521140402.23318-5-peter.maydell@linaro.org
2018-05-31Make address_space_translate{, _cached}() take a MemTxAttrs argumentPeter Maydell1-1/+3
As part of plumbing MemTxAttrs down to the IOMMU translate method, add MemTxAttrs as an argument to address_space_translate() and address_space_translate_cached(). Callers either have an attrs value to hand, or don't care and can use MEMTXATTRS_UNSPECIFIED. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180521140402.23318-4-peter.maydell@linaro.org
2018-05-31memory.h: Improve IOMMU related documentationPeter Maydell1-10/+95
Add more detail to the documentation for memory_region_init_iommu() and other IOMMU-related functions and data structures. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Eric Auger <eric.auger@redhat.com> Message-id: 20180521140402.23318-2-peter.maydell@linaro.org
2018-05-09exec: reintroduce MemoryRegion cachingPaolo Bonzini1-5/+53
MemoryRegionCache was reverted to "normal" address_space_* operations for 2.9, due to lack of support for IOMMUs. Reinstate the optimizations, caching only the IOMMU translation at address_cache_init but not the IOMMU lookup and target AddressSpace translation are not cached; now that MemoryRegionCache supports IOMMUs, it becomes more widely applicable too. The inlined fast path is defined in memory_ldst_cached.inc.h, while the slow path uses memory_ldst.inc.c as before. The smaller fast path causes a little code size reduction in MemoryRegionCache users: hw/virtio/virtio.o text size before: 32373 hw/virtio/virtio.o text size after: 31941 Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-05-09exec: move memory access declarations to a common header, inline *_phys ↵Paolo Bonzini1-109/+44
functions For now, this reduces the text size very slightly due to the newly-added inlining: text size before: 9301965 text size after: 9300645 Later, however, the declarations in include/exec/memory_ldst.inc.h will be reused for the MemoryRegionCache slow path functions. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-03-06address_space_read: address_space_to_flatview needs RCU lockPaolo Bonzini1-15/+10
address_space_read is calling address_space_to_flatview but it can be called outside the RCU lock. To fix it, push the rcu_read_lock/unlock pair up from flatview_read_full to address_space_read's constant size fast path and address_space_read_full. Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-03-06memory: inline some performance-sensitive accessorsPaolo Bonzini1-1/+21
These accessors are called from inlined functions, and the call sequence is much more expensive than just inlining the access. Move the struct declaration to memory-internal.h so that exec.c and memory.c can both use an inline function. Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-02-19mem: add share parameter to memory-backend-ramMarcel Apfelbaum1-0/+23
Currently only file backed memory backend can be created with a "share" flag in order to allow sharing guest RAM with other processes in the host. Add the "share" flag also to RAM Memory Backend in order to allow remapping parts of the guest RAM to different host virtual addresses. This is needed by the RDMA devices in order to remap non-contiguous QEMU virtual addresses to a contiguous virtual address range. Moved the "share" flag to the Host Memory base class, modified phys_mem_alloc to include the new parameter and a new interface memory_region_init_ram_shared_nomigrate. There are no functional changes if the new flag is not used. Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
2018-02-13memory: hide memory_region_sync_dirty_bitmap behind DirtyBitmapSnapshotPaolo Bonzini1-11/+0
Simplify the users of memory_region_snapshot_and_clear_dirty, so that they do not have to call memory_region_sync_dirty_bitmap explicitly. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-02-13memory: remove memory_region_test_and_clear_dirtyPaolo Bonzini1-21/+3
It is unused after g364fb has been converted to use DirtyBitmapSnapshot. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-02-07Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell1-12/+15
* socket option parsing fix (Daniel) * SCSI fixes (Fam) * Readline double-free fix (Greg) * More HVF attribution fixes (Izik) * WHPX (Windows Hypervisor Platform Extensions) support (Justin) * POLLHUP handler (Klim) * ivshmem fixes (Ladi) * memfd memory backend (Marc-André) * improved error message (Marcelo) * Memory fixes (Peter Xu, Zhecheng) * Remove obsolete code and comments (Peter M.) * qdev API improvements (Philippe) * Add CONFIG_I2C switch (Thomas) # gpg: Signature made Wed 07 Feb 2018 15:24:08 GMT # gpg: using RSA key BFFBD25F78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" # Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1 # Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83 * remotes/bonzini/tags/for-upstream: (47 commits) Add the WHPX acceleration enlightenments Introduce the WHPX impl Add the WHPX vcpu API Add the Windows Hypervisor Platform accelerator. tests/test-filter-redirector: move close() tests: use memfd in vhost-user-test vhost-user-test: make read-guest-mem setup its own qemu tests: keep compiling failing vhost-user tests Add memfd based hostmem memfd: add hugetlbsize argument memfd: add hugetlb support memfd: add error argument, instead of perror() cpus: join thread when removing a vCPU cpus: hvf: unregister thread with RCU cpus: tcg: unregister thread with RCU, fix exiting of loop on unplug cpus: dummy: unregister thread with RCU, exit loop on unplug cpus: kvm: unregister thread with RCU cpus: hax: register/unregister thread with RCU, exit loop on unplug ivshmem: Disable irqfd on device reset ivshmem: Improve MSI irqfd error handling ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org> # Conflicts: # cpus.c
2018-02-06memory/iommu: Add get_attr()Alexey Kardashevskiy1-0/+22
This adds get_attr() to IOMMUMemoryRegionClass, like iommu_ops::domain_get_attr in the Linux kernel. This defines the first attribute - IOMMU_ATTR_SPAPR_TCE_FD - which will be used between the pSeries machine and VFIO-PCI. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-02-05memory: update comments and fix some typosJay Zhou1-12/+15
Signed-off-by: Jay Zhou <jianjay.zhou@huawei.com> Message-Id: <1515043788-38300-1-git-send-email-jianjay.zhou@huawei.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-01-19hostmem-file: add "align" optionHaozhong Zhang1-0/+3
When mmap(2) the backend files, QEMU uses the host page size (getpagesize(2)) by default as the alignment of mapping address. However, some backends may require alignments different than the page size. For example, mmap a device DAX (e.g., /dev/dax0.0) on Linux kernel 4.13 to an address, which is 4K-aligned but not 2M-aligned, fails with a kernel message like [617494.969768] dax dax0.0: qemu-system-x86: dax_mmap: fail, unaligned vma (0x7fa37c579000 - 0x7fa43c579000, 0x1fffff) Because there is no common approach to get such alignment requirement, we add the 'align' option to 'memory-backend-file', so that users or management utils, which have enough knowledge about the backend, can specify a proper alignment via this option. Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com> Message-Id: <20171211072806.2812-2-haozhong.zhang@intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> [ehabkost: fixed typo, fixed error_setg() format string] Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2017-12-18memory: remove unused memory_region_set_global_locking()Marc-André Lureau1-12/+0
This was never used since its introduction in commit 196ea13104f8 ("memory: Add global-locking property to memory regions"). Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-09-22memory: trace FlatView creation and destructionPaolo Bonzini1-1/+0
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-09-22memory: Get rid of address_space_init_shareableAlexey Kardashevskiy1-19/+0
Since FlatViews are shared now and ASes not, this gets rid of address_space_init_shareable(). This should cause no behavioural change. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Message-Id: <20170921085110.25598-17-aik@ozlabs.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-09-21memory: Rework "info mtree" to print flat views and dispatch treesAlexey Kardashevskiy1-1/+2
This adds a new "-d" switch to "info mtree" to print dispatch tree internals. This changes the way "-f" is handled - it prints now flat views and associated address spaces. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Message-Id: <20170921085110.25598-15-aik@ozlabs.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-09-21memory: Switch memory from using AddressSpace to FlatViewAlexey Kardashevskiy1-16/+35
FlatView's will be shared between AddressSpace's and subpage_t and MemoryRegionSection cannot store AS anymore, hence this change. In particular, for: typedef struct subpage_t { MemoryRegion iomem; - AddressSpace *as; + FlatView *fv; hwaddr base; uint16_t sub_section[]; } subpage_t; struct MemoryRegionSection { MemoryRegion *mr; - AddressSpace *address_space; + FlatView *fv; hwaddr offset_within_region; Int128 size; hwaddr offset_within_address_space; bool readonly; }; This should cause no behavioural change. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Message-Id: <20170921085110.25598-7-aik@ozlabs.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-09-21memory: Move AddressSpaceDispatch from AddressSpace to FlatViewAlexey Kardashevskiy1-2/+0
As we are going to share FlatView's between AddressSpace's, and AddressSpaceDispatch is a structure to perform quick lookup in FlatView, this moves ASD to FlatView. After previosly open coded ASD rendering, we can also remove as->next_dispatch as the new FlatView pointer is stored on a stack and set to an AS atomically. flatview_destroy() is executed under RCU instead of address_space_dispatch_free() now. This makes mem_begin/mem_commit to work with ASD and mem_add with FV as later on mem_add will be taking FV as an argument anyway. This should cause no behavioural change. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Message-Id: <20170921085110.25598-5-aik@ozlabs.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-09-21memory: Open code FlatView renderingAlexey Kardashevskiy1-1/+0
We are going to share FlatView's between AddressSpace's and per-AS memory listeners won't suit the purpose anymore so open code the dispatch tree rendering. Since there is a good chance that dispatch_listener was the only listener, this avoids address_space_update_topology_pass() if there is no registered listeners; this should improve starting time. This should cause no behavioural change. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Message-Id: <20170921085110.25598-3-aik@ozlabs.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-09-04memory.h: Move MemTxResult type to memattrs.hPeter Maydell1-10/+0
Move the MemTxResult type to memattrs.h. We're going to want to use it in cpu/qom.h, which doesn't want to include all of memory.h. In practice MemTxResult and MemTxAttrs are pretty closely linked since both are used for the new-style read_with_attrs and write_with_attrs callbacks, so memattrs.h is a reasonable home for this rather than creating a whole new header file for it. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
2017-07-14memory.h: Add memory_region_init_{ram, rom, rom_device}() handling migrationPeter Maydell1-0/+88
Add new utility functions which both initialize a RAM MemoryRegion and arrange for its contents to be migrated; we give thes the memory_region_init_ram(), memory_region_init_rom() and memory_region_init_rom_device() names that we just freed up by renaming the old implementations to _nomigrate(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1499438577-7674-6-git-send-email-peter.maydell@linaro.org
2017-07-14memory: Rename memory_region_init_rom() and _rom_device() to _nomigrate()Peter Maydell1-16/+24
Rename memory_region_init_rom() to memory_region_init_rom_nomigrate() and memory_region_init_rom_device() to memory_region_init_rom_device_nomigrate(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1499438577-7674-5-git-send-email-peter.maydell@linaro.org
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