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2015-06-12throttle: acquire the ThrottleGroup lock in bdrv_swap()Alberto Garcia
bdrv_swap() touches the fields of a BlockDriverState that are protected by the ThrottleGroup lock. Although those fields end up in their original place, they are temporarily swapped in the process, so there's a chance that an operation on a member of the same group happening on a different thread can try to use them. Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: d92dc40d7c4f1fc5cda5cbbf4ffb7a4670b79d17.1433779731.git.berto@igalia.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-06-12throttle: Add throttle group supportAlberto Garcia
The throttle group support use a cooperative round robin scheduling algorithm. The principles of the algorithm are simple: - Each BDS of the group is used as a token in a circular way. - The active BDS computes if a wait must be done and arms the right timer. - If a wait must be done the token timer will be armed so the token will become the next active BDS. Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: f0082a86f3ac01c46170f7eafe2101a92e8fde39.1433779731.git.berto@igalia.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-06-12throttle: Add throttle group infrastructureAlberto Garcia
Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 2fdb4de17210b733a13eb472c33cd08b45f8fd21.1433779731.git.berto@igalia.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-06-12throttle: Extract timers from ThrottleState into a separate structureBenoît Canet
Group throttling will share ThrottleState between multiple bs. As a consequence the ThrottleState will be accessed by multiple aio context. Timers are tied to their aio context so they must go out of the ThrottleState structure. This commit paves the way for each bs of a common ThrottleState to have its own timer. Signed-off-by: Benoit Canet <benoit.canet@nodalink.com> Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 6cf9ea96d8b32ae2f8769cead38f68a6a0c8c909.1433779731.git.berto@igalia.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-06-11Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into stagingPeter Maydell
pc, acpi, virtio Most notably this includes virtio 1 patches Still not all devices converted, and not fully spec compliant, so disabled by default. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> # gpg: Signature made Thu Jun 11 12:53:08 2015 BST using RSA key ID D28D5469 # gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" # gpg: aka "Michael S. Tsirkin <mst@redhat.com>" * remotes/mst/tags/for_upstream: (42 commits) i386/acpi-build: fix PXB workarounds for unsupported BIOSes i386/acpi-build: more traditional _UID and _HID for PXB root buses vhost-scsi: move qdev properties into vhost-scsi.c virtio-9p-device: move qdev properties into virtio-9p-device.c virtio-serial-bus: move qdev properties into virtio-serial-bus.c virtio-rng: move qdev properties into virtio-rng.c virtio-scsi: move qdev properties into virtio-scsi.c virtio-net.h: Remove unsed DEFINE_VIRTIO_NET_PROPERTIES virtio-net: move qdev properties into virtio-net.c virtio-input: emulated devices [pci] virtio-input: core code & base class [pci] pci: add PCI_CLASS_INPUT_* virtio-pci: fill VirtIOPCIRegions early. virtio-pci: drop identical virtio_pci_cap virtio-pci: move cap type to VirtIOPCIRegion virtio-pci: move virtio_pci_add_mem_cap call to virtio_pci_modern_region_map virtio-pci: add virtio_pci_modern_region_map() virtio-pci: add virtio_pci_modern_regions_init() virtio-pci: add struct VirtIOPCIRegion for virtio-1 regions virtio-balloon: switch to virtio_add_feature ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-10Merge remote-tracking branch 'remotes/kraxel/tags/pull-vga-20150610-1' into ↵Peter Maydell
staging stdvga: factor out mmio subregion init virtio-gpu: add virtio gpu core code, 2d mode # gpg: Signature made Wed Jun 10 10:03:11 2015 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-vga-20150610-1: virtio-gpu/2d: add virtio gpu core code virtio: update headers, add virtio-gpu (2d) stdvga: factor out mmio subregion init stdvga: pass VGACommonState instead of PCIVGAState stdvga: fix offset in pci_vga_ioport_read Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-10vhost-scsi: move qdev properties into vhost-scsi.cShannon Zhao
As only one place in vhost-scsi.c uses DEFINE_VHOST_SCSI_PROPERTIES, there is no need to expose it. Inline it into vhost-scsi.c to avoid wrongly use. Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio-serial-bus: move qdev properties into virtio-serial-bus.cShannon Zhao
As only one place in virtio-serial-bus.c uses DEFINE_VIRTIO_SERIAL_PROPERTIES, there is no need to expose it. Inline it into virtio-serial-bus.c to avoid wrongly use. Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio-rng: move qdev properties into virtio-rng.cShannon Zhao
As only one place in virtio-rng.c uses DEFINE_VIRTIO_RNG_PROPERTIES, there is no need to expose it. Inline it into virtio-rng.c to avoid wrongly use. Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio-scsi: move qdev properties into virtio-scsi.cShannon Zhao
As only one place in virtio-scsi.c uses DEFINE_VIRTIO_SCSI_PROPERTIES and DEFINE_VIRTIO_SCSI_FEATURES, there is no need to expose them. Inline them into virtio-scsi.c to avoid wrongly use. Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio-net.h: Remove unsed DEFINE_VIRTIO_NET_PROPERTIESShannon Zhao
Remove unsed DEFINE_VIRTIO_NET_PROPERTIES in virtio-net.h and delete a space typo. Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio-net: move qdev properties into virtio-net.cShannon Zhao
As only one place in virtio-net.c uses DEFINE_VIRTIO_NET_FEATURES, there is no need to expose it. Inline it into virtio-net.c to avoid wrongly use. Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10pci: add PCI_CLASS_INPUT_*Gerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio_balloon: header updateMichael S. Tsirkin
add modern header Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio: add modern config accessorsMichael S. Tsirkin
virtio 1.0 defines config space as LE, as opposed to pre-1.0 which was native endian. Add API for transports to execute word/dword accesses in little endian format - will be useful for mmio and pci (byte access is also wrapped, for completeness). For simplicity, we still keep config in host native endian format, byteswap to LE on guest access. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio: generation counter supportMichael S. Tsirkin
Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10vhost: 64 bit featuresCornelia Huck
Make sure that all vhost interfaces use 64 bit features, as the virtio core does, and make sure to use ULL everywhere possible to be on the safe side. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio: allow to fail setting statusCornelia Huck
virtio-1 allow setting of the FEATURES_OK status bit to fail if the negotiated feature bits are inconsistent: let's fail virtio_set_status() in that case and update virtio-ccw to post an error to the guest. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio: allow virtio-1 queue layoutCornelia Huck
For virtio-1 devices, we allow a more complex queue layout that doesn't require descriptor table and rings on a physically-contigous memory area: add virtio_queue_set_rings() to allow transports to set this up. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio: endianness checks for virtio 1.0 devicesCornelia Huck
Add code that checks for the VERSION_1 feature bit in order to make decisions about the device's endianness. This allows us to support transitional devices. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10Merge remote-tracking branch 'remotes/kraxel/tags/pull-fw_cfg-20150610-1' ↵Peter Maydell
into staging fw_cfg: drop write support, qemu cmdline support, bugfixes. bios-tables-test: fix smbios test. # gpg: Signature made Wed Jun 10 07:29:53 2015 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-fw_cfg-20150610-1: bios-tables-test: handle false-positive smbios signature matches fw_cfg: insert fw_cfg file blobs via qemu cmdline fw_cfg: prohibit insertion of duplicate fw_cfg file names fw_cfg: prevent selector key conflict fw_cfg: remove support for guest-side data writes fw_cfg: fix FW_CFG_BOOT_DEVICE update on ppc and sparc fw_cfg: add fw_cfg_modify_i16 (update) method QemuOpts: increase number of vm_config_groups Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-10Merge remote-tracking branch 'remotes/awilliam/tags/vfio-update-20150609.0' ↵Peter Maydell
into staging Initial VFIO platform device support, v2 (Eric Auger, et al.) # gpg: Signature made Tue Jun 9 15:25:40 2015 BST using RSA key ID 3BB08B22 # gpg: Good signature from "Alex Williamson <alex.williamson@redhat.com>" # gpg: aka "Alex Williamson <alex@shazbot.org>" # gpg: aka "Alex Williamson <alwillia@redhat.com>" # gpg: aka "Alex Williamson <alex.l.williamson@gmail.com>" * remotes/awilliam/tags/vfio-update-20150609.0: hw/vfio/platform: calxeda xgmac device hw/vfio/platform: add irq assignment hw/vfio/platform: vfio-platform skeleton Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-10virtio-gpu/2d: add virtio gpu core codeGerd Hoffmann
This patch adds the core code for virtio gpu emulation, covering 2d support. Written by Dave Airlie and Gerd Hoffmann. Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-06-10virtio: update headers, add virtio-gpu (2d)Gerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-06-10fw_cfg: remove support for guest-side data writesGabriel L. Somlo
From this point forward, any guest-side writes to the fw_cfg data register will be treated as no-ops. This patch also removes the unused host-side API function fw_cfg_add_callback(), which allowed the registration of a callback to be executed each time the guest completed a full overwrite of a given fw_cfg data item. Signed-off-by: Gabriel Somlo <somlo@cmu.edu> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-06-10fw_cfg: add fw_cfg_modify_i16 (update) methodGabriel L. Somlo
Allow the ability to modify the value of an existing 16-bit integer fw_cfg item. Signed-off-by: Gabriel Somlo <somlo@cmu.edu> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-06-09hw/vfio/platform: calxeda xgmac deviceEric Auger
The platform device class has become abstract. This patch introduces a calxeda xgmac device that derives from it. Signed-off-by: Eric Auger <eric.auger@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2015-06-09QemuOpts: Convert qemu_opt_foreach() to ErrorMarkus Armbruster
Retain the function value for now, to permit selective conversion of its callers. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2015-06-09QemuOpts: Drop qemu_opt_foreach() parameter abort_on_failureMarkus Armbruster
When the argument is non-zero, qemu_opt_foreach() stops on callback returning non-zero, and returns that value. When the argument is zero, it doesn't stop, and returns the callback's value from the last iteration. The two callers that pass zero could just as well pass one: * qemu_spice_init()'s callback add_channel() either returns zero or exit()s. * config_write_opts()'s callback config_write_opt() always returns zero. Drop the parameter, and always stop. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2015-06-09QemuOpts: Convert qemu_opts_foreach() to ErrorMarkus Armbruster
Retain the function value for now, to permit selective conversion of its callers. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Acked-by: Kevin Wolf <kwolf@redhat.com>
2015-06-08QemuOpts: Drop qemu_opts_foreach() parameter abort_on_failureMarkus Armbruster
When the argument is non-zero, qemu_opts_foreach() stops on callback returning non-zero, and returns that value. When the argument is zero, it doesn't stop, and returns the bit-wise inclusive or of all the return values. Funky :) The callers that pass zero could just as well pass one, because their callbacks can't return anything but zero: * qemu_add_globals()'s callback qdev_add_one_global() * qemu_config_write()'s callback config_write_opts() * main()'s callbacks default_driver_check(), drive_enable_snapshot(), vnc_init_func() Drop the parameter, and always stop. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Acked-by: Kevin Wolf <kwolf@redhat.com>
2015-06-08hw/vfio/platform: add irq assignmentEric Auger
This patch adds the code requested to assign interrupts to a guest. The interrupts are mediated through user handled eventfds only. Signed-off-by: Eric Auger <eric.auger@linaro.org> Tested-by: Vikram Sethi <vikrams@codeaurora.org> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2015-06-08hw/vfio/platform: vfio-platform skeletonEric Auger
Minimal VFIO platform implementation supporting register space user mapping but not IRQ assignment. Signed-off-by: Kim Phillips <kim.phillips@linaro.org> Signed-off-by: Eric Auger <eric.auger@linaro.org> Tested-by: Vikram Sethi <vikrams@codeaurora.org> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2015-06-08Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell
* KVM error improvement from Laurent * CONFIG_PARALLEL fix from Mirek * Atomic/optimized dirty bitmap access from myself and Stefan * BUILD_DIR convenience/bugfix from Peter C * Memory leak fix from Shannon * SMM improvements (though still TCG only) from myself and Gerd, acked by mst # gpg: Signature made Fri Jun 5 18:45:20 2015 BST using RSA key ID 78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" # gpg: WARNING: This key is not certified with sufficiently trusted signatures! # gpg: It is not certain that the signature belongs to the owner. # 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: (62 commits) update Linux headers from kvm/next atomics: add explicit compiler fence in __atomic memory barriers ich9: implement SMI_LOCK q35: implement TSEG q35: add test for SMRAM.D_LCK q35: implement SMRAM.D_LCK q35: add config space wmask for SMRAM and ESMRAMC q35: fix ESMRAMC default q35: implement high SMRAM hw/i386: remove smram_update target-i386: use memory API to implement SMRAM hw/i386: add a separate region that tracks the SMRAME bit target-i386: create a separate AddressSpace for each CPU vl: run "late" notifiers immediately qom: add object_property_add_const_link vl: allow full-blown QemuOpts syntax for -global pflash_cfi01: add secure property pflash_cfi01: change to new-style MMIO accessors pflash_cfi01: change big-endian property to BIT type target-i386: wake up processors that receive an SMI ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-08Merge remote-tracking branch 'remotes/jnsnow/tags/ide-pull-request' into stagingPeter Maydell
# gpg: Signature made Fri Jun 5 20:59:07 2015 BST using RSA key ID AAFC390E # gpg: Good signature from "John Snow (John Huston) <jsnow@redhat.com>" # gpg: WARNING: This key is not certified with sufficiently trusted signatures! # gpg: It is not certain that the signature belongs to the owner. # Primary key fingerprint: FAEB 9711 A12C F475 812F 18F2 88A9 064D 1835 61EB # Subkey fingerprint: F9B7 ABDB BCAC DF95 BE76 CBD0 7DEF 8106 AAFC 390E * remotes/jnsnow/tags/ide-pull-request: macio: remove remainder_len DBDMA_io property macio: update comment/constants to reflect the new code macio: switch pmac_dma_write() over to new offset/len implementation macio: switch pmac_dma_read() over to new offset/len implementation fdc-test: Test state for existing cases more thoroughly fdc: Fix MSR.RQM flag fdc: Disentangle phases in fdctrl_read_data() fdc: Code cleanup in fdctrl_write_data() fdc: Use phase in fdctrl_write_data() fdc: Introduce fdctrl->phase fdc: Rename fdctrl_set_fifo() to fdctrl_to_result_phase() fdc: Rename fdctrl_reset_fifo() to fdctrl_to_command_phase() Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-05update Linux headers from kvm/nextPaolo Bonzini
This is kvm.git commit 05ff30bb56c6b3d3000519d6e02ed35678ddae3b. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-05atomics: add explicit compiler fence in __atomic memory barriersPaolo Bonzini
__atomic_thread_fence does not include a compiler barrier; in the C++11 memory model, fences take effect in combination with other atomic operations. GCC implements this by making __atomic_load and __atomic_store access memory as if the pointer was volatile, and leaves no trace whatsoever of acquire and release fences in the compiler's intermediate representation. In QEMU, we want memory barriers to act on all memory, but at the same time we would like to use __atomic_thread_fence for portability reasons. Add compiler barriers manually around the __atomic_thread_fence. Message-Id: <1433334080-14912-1-git-send-email-pbonzini@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-05ich9: implement SMI_LOCKGerd Hoffmann
Add write mask for the smi enable register, so we can disable write access to certain bits. Open all bits on reset. Disable write access to GBL_SMI_EN when SMI_LOCK (in ich9 lpc pci config space) is set. Write access to SMI_LOCK itself is disabled too. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-05q35: implement TSEGGerd Hoffmann
TSEG provides larger amounts of SMRAM than the 128 KB available with legacy SMRAM and high SMRAM. Route access to tseg into nowhere when enabled, for both cpus and busmaster dma, and add tseg window to smram region, so cpus can access it in smm mode. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-05q35: implement SMRAM.D_LCKGerd Hoffmann
Once the SMRAM.D_LCK bit has been set by the guest several bits in SMRAM and ESMRAMC become readonly until the next machine reset. Implement this by updating the wmask accordingly when the guest sets the lock bit. As the lock it itself is locked down too we don't need to worry about the guest clearing the lock bit. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-05q35: add config space wmask for SMRAM and ESMRAMCGerd Hoffmann
Not all bits in SMRAM and ESMRAMC can be changed by the guest. Add wmask defines accordingly and set them in mch_reset(). Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-05q35: fix ESMRAMC defaultGerd Hoffmann
The cache bits in ESMRAMC are hardcoded to 1 (=disabled) according to the q35 mch specs. Add and use a define with this default. While being at it also update the SMRAM default to use the name (no code change, just makes things a bit more readable). Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-05q35: implement high SMRAMPaolo Bonzini
When H_SMRAME is 1, low memory at 0xa0000 is left alone by SMM, and instead the chipset maps the 0xa0000-0xbffff window at 0xfeda0000-0xfedbffff. This affects both the "non-SMM" view controlled by D_OPEN and the SMM view controlled by G_SMRAME, so add two new MemoryRegions and toggle the enabled/disabled state of all four in mch_update_smram. Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-05hw/i386: remove smram_updatePaolo Bonzini
It's easier to inline it now that most of its work is done by the CPU (rather than the chipset) through /machine/smram and the memory API. Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-05target-i386: use memory API to implement SMRAMPaolo Bonzini
Remove cpu_smm_register and cpu_smm_update. Instead, each CPU address space gets an extra region which is an alias of /machine/smram. This extra region is enabled or disabled as the CPU enters/exits SMM. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-05hw/i386: add a separate region that tracks the SMRAME bitPaolo Bonzini
This region is exported at /machine/smram. It is "empty" if SMRAME=0 and points to SMRAM if SMRAME=1. The CPU will enable/disable it as it enters or exits SMRAM. While touching nearby code, the existing memory region setup was slightly inconsistent. The smram_region is *disabled* in order to open SMRAM (because the smram_region shows the low VRAM instead of the RAM at 0xa0000). Because SMRAM is closed at startup, the smram_region must be enabled when creating the i440fx or q35 devices. Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-05qom: add object_property_add_const_linkPaolo Bonzini
Suggested-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-05target-i386: introduce cpu_get_mem_attrsPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-05memory: make cpu_physical_memory_sync_dirty_bitmap() fully atomicStefan Hajnoczi
The fast path of cpu_physical_memory_sync_dirty_bitmap() directly manipulates the dirty bitmap. Use atomic_xchg() to make the test-and-clear atomic. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <1417519399-3166-7-git-send-email-stefanha@redhat.com> [Only do xchg on nonzero words. - Paolo] Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-05memory: replace cpu_physical_memory_reset_dirty() with test-and-clearStefan Hajnoczi
The cpu_physical_memory_reset_dirty() function is sometimes used together with cpu_physical_memory_get_dirty(). This is not atomic since two separate accesses to the dirty memory bitmap are made. Turn cpu_physical_memory_reset_dirty() and cpu_physical_memory_clear_dirty_range_type() into the atomic cpu_physical_memory_test_and_clear_dirty(). Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <1417519399-3166-6-git-send-email-stefanha@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 18:45:32 +0000