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Implicit use of dr7 bit field is a little hard to understand,
so define constants for them and use them consistently.
Signed-off-by: liguang <lig.fnst@cn.fujitsu.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
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kvm_check_features_against_host() should be called when features can't
be changed, and when features are converted to properties it would be
possible to change them until realize time, so correct way is to call
kvm_check_features_against_host() in x86_cpu_realize().
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
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Freeing resources in one place would require setting 'error'
to not NULL, so add some more error reporting before jumping to
exit branch.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
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No functional change, needed for simplifying conversion to properties.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
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This adds the following feature words to the list of flags to be checked
by kvm_check_features_against_host():
- cpuid_7_0_ebx_features
- ext4_features
- kvm_features
- svm_features
This will ensure the "enforce" flag works as it should: it won't allow
QEMU to be started unless every flag that was requested by the user or
defined in the CPU model is supported by the host.
This patch may cause existing configurations where "enforce" wasn't
preventing QEMU from being started to abort QEMU. But that's exactly the
point of this patch: if a flag was not supported by the host and QEMU
wasn't aborting, it was a bug in the "enforce" code.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
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Feature names were taken from the X86_FEATURE_* constants in the Linux
kernel code.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
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Instead of carrying the CPUID leaf/register and feature name array on
the model_features_t struct, move that information into
feature_word_info so it can be reused by other functions.
The goal is to eventually kill model_features_t entirely, but to do that
we have to either convert x86_def_t.features to an array or use
offsetof() inside FeatureWordInfo (to replace the pointers inside
model_features_t). So by now just move most of the model_features_t
fields to FeatureWordInfo except for the two pointers to local
arguments.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
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This introduces a FeatureWord enum, FeatureWordInfo struct (with
generation information about a feature word), and a FeatureWordArray
typedef, and changes add_flagname_to_bitmaps() code and
cpu_x86_parse_featurestr() to use the new typedefs instead of separate
variables for each feature word.
This will help us keep the code at kvm_check_features_against_host(),
cpu_x86_parse_featurestr() and add_flagname_to_bitmaps() sane while
adding new feature name arrays.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
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KVM_CAP_PV_MMU capability reporting was removed from the kernel since
v2.6.33 (see commit a68a6a7282373), and was completely removed from the
kernel since v3.3 (see commit fb92045843). It doesn't make sense to keep
it enabled by default, as it would cause unnecessary hassle when using
the "enforce" flag.
This disables kvm_mmu on all machine-types. With this fix, the possible
scenarios when migrating from QEMU <= 1.3 to QEMU 1.4 are:
------------+----------+----------------------------------------------------
src kernel | dst kern.| Result
------------+----------+----------------------------------------------------
>= 2.6.33 | any | kvm_mmu was already disabled and will stay disabled
<= 2.6.32 | >= 3.3 | correct live migration is impossible
<= 2.6.32 | <= 3.2 | kvm_mmu will be disabled on next guest reboot *
------------+----------+----------------------------------------------------
* If they are running kernel <= 2.6.32 and want kvm_mmu to be kept
enabled on guest reboot, they can explicitly add +kvm_mmu to the QEMU
command-line. Using 2.6.33 and higher, it is not possible to enable
kvm_mmu explicitly anymore.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
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Any KVM-specific code that use these constants must check if
kvm_enabled() is true before using them.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
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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>
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Use the global first_cpu variable to halt the CPU rather than using a
local first_cpu initialized from qemu_get_cpu(0).
This will allow to change qemu_get_cpu() return type to CPUState
despite use of the CPU_COMMON halted field in the reset handler.
Signed-off-by: Andreas Färber <afaerber@suse.de>
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CPUArchState is no longer needed, and it thereby no longer depends on
NEED_CPU_H.
Signed-off-by: Andreas Färber <afaerber@suse.de>
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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>
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Signed-off-by: Andreas Färber <afaerber@suse.de>
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This function will be touched again soon, so a good understanding of env
vs. other helps. Adopt gtk-doc style.
Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Eric Johnson <ericj@mips.com>
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To facilitate the field movements, pass MIPSCPU to malta_mips_config();
avoid that for mips_cpu_map_tc() since callers only access MIPS Thread
Contexts, inside TCG helpers.
Signed-off-by: Andreas Färber <afaerber@suse.de>
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Fix the compilation error introduced by msg new field.
CC hw/9pfs/virtio-9p.o
In file included from /home/konradf/Documents/safe/greensocs/virtio-project/x86-qemu/qemu/hw/9pfs/virtio-9p.c:17:0:
/home/konradf/Documents/safe/greensocs/virtio-project/x86-qemu/qemu/hw/virtio-pci.h:30:16: erreur: field ‘msg’ has incomplete type
make: *** [hw/9pfs/virtio-9p.o] Erreur 1
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
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virtio_pci_set_guest_notifiers() now takes an additional argument to
specify the number of virtqueues to assign a guest notifier for. This
causes a build breakage for CONFIG_VIRTIO_BLK_DATA_PLANE builds:
/home/mdroth/w/qemu2.git/hw/dataplane/virtio-blk.c: In function
‘virtio_blk_data_plane_start’:
/home/mdroth/w/qemu2.git/hw/dataplane/virtio-blk.c:451:47: error: too
few arguments to function ‘s->vdev->binding->set_guest_notifiers’
/home/mdroth/w/qemu2.git/hw/dataplane/virtio-blk.c: In function
‘virtio_blk_data_plane_stop’:
/home/mdroth/w/qemu2.git/hw/dataplane/virtio-blk.c:511:5: error: too few
arguments to function ‘s->vdev->binding->set_guest_notifiers’
make[1]: *** [hw/dataplane/virtio-blk.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [subdir-x86_64-softmmu] Error 2
Fix this by passing 1 as the number of virtqueues to assign notifiers
for.
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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Fixes the following:
/home/mdroth/w/qemu2.git/hw/virtio-pci.c: In function
‘kvm_virtio_pci_vector_unmask’:
/home/mdroth/w/qemu2.git/hw/virtio-pci.c:673:12: error: ‘ret’ may be
used uninitialized in this function [-Werror=uninitialized]
cc1: all warnings being treated as errors
make: *** [hw/virtio-pci.o] Error 1
make: *** Waiting for unfinished jobs....
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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The GE IP-Octal 232 is an IndustryPack module that implements eight
RS-232 serial ports, each one of which can be redirected to a
character device in the host.
Signed-off-by: Alberto Garcia <agarcia@igalia.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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The TPCI200 is a PCI board that supports up to 4 IndustryPack modules.
A new bus type called 'IndustryPack' has been created so any
compatible module can be attached to this board.
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Alberto Garcia <agarcia@igalia.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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* kraxel/pixman.v6:
pixman: pass extra cflags and ldflags
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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* kraxel/usb.76:
usb-host: Initialize dev->port the obviously safe way
usb-host: Drop superfluous null test from usb_host_auto_scan()
ehci: Assert state machine is sane w.r.t. EHCIQueue
xhci: nuke transfe5rs on detach
xhci: call xhci_detach_slot on root port detach too
xhci: create xhci_detach_slot helper function
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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* spice/spice.v67:
qxl: Don't drop client capability bits
qxl: Fix SPICE_RING_PROD_ITEM(), SPICE_RING_CONS_ITEM() sanity check
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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* kraxel/testdev.2:
pc-testdev: use typedefs
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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* kwolf/for-anthony:
dataplane: handle misaligned virtio-blk requests
dataplane: extract virtio-blk read/write processing into do_rdwr_cmd()
block: make qiov_is_aligned() public
raw-posix: fix bdrv_aio_ioctl
sheepdog: implement direct write semantics
block: do not probe zero-sized disks
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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pci,virtio
This further optimizes MSIX handling in virtio-pci.
Also included is pci cleanup by Paolo, and pci device
assignment fix by Alex.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* mst/tags/for_anthony:
pci-assign: Enable MSIX on device to match guest
pci: use constants for devices under the 1B36 device ID, document them
ivshmem: use symbolic constant for PCI ID, add to pci-ids.txt
virtio-9p: use symbolic constant, add to pci-ids.txt
reorganize pci-ids.txt
docs: move pci-ids.txt to docs/specs/
vhost: backend masking support
vhost: set started flag while start is in progress
virtio-net: set/clear vhost_started in reverse order
virtio: backend virtqueue notifier masking
virtio-pci: cache msix messages
kvm: add stub for update msi route
msix: add api to access msix message
virtio: don't waste irqfds on control vqs
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* bonzini/stub: (27 commits)
build: improve quiet output for .stp rules
build: fold trace-obj-y into libqemuutil.a
build: some simplifications for "trace/Makefile.objs"
build: remove coroutine-obj-y
build: move version-obj-y to the generic LINK rule
build: move base QAPI files to libqemuutil.a
build: move QAPI definitions for QEMU out of qapi-obj-y
build: consolidate multiple variables into universal-obj-y
build: move qobject files to qobject/ and libqemuutil.a
build: move libqemuutil.a components to util/
build: move files away from tools-obj-y, common-obj-y, user-obj-y
build: move util-obj-y to libqemuutil.a
build: rename oslib-obj-y to util-obj-y
libcacard: list oslib-obj-y file explicitly
libcacard: link vscclient to dynamic library
libcacard: rewrite Makefile in non-recursive style
libcacard: add list of exported symbols
libcacard: use per-target variable definitions
libcacard: prepare to use -y trick in the Makefile
libcacard: require libtool to build it
...
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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* qmp/queue/qmp:
monitor: assert monitor_puts()'s loop invariant
target-i386: fix bits 39:32 of the final physical address when using 4M page
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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Store --extra-cflags and --extra-ldflags in config-host.mak,
then pass them on to the pixman configure script.
Cc: Scott Wood <scottwood@freescale.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Coverity worries the strcpy() could overrun the destination. It
can't, because the source always points to usb_host_scan()'s auto
port[], which has the same size. Use pstrcpy() anyway, to hush the
checker.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Coverity points out that port is later passed to usb_host_open(),
which dereferences it. It actually can't be null: it always points to
usb_host_scan()'s auto port[]. Drop the superfluous port == NULL
test.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Coverity worries the EHCIQueue pointer could be null when we pass it
to functions that reference it. The state machine ensures it can't be
null then. Assert that, to hush the checker.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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O_DIRECT on Linux has alignment requirements on I/O buffers and
misaligned requests result in -EINVAL. The Linux virtio_blk guest
driver usually submits aligned requests so I forgot to handle misaligned
requests.
It turns out that virtio-win guest drivers submit misaligned requests.
Handle them using a bounce buffer that meets alignment requirements.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Extract code for read/write command processing into do_rdwr_cmd(). This
brings together pieces that are spread across process_request().
The real motivation is to set the stage for handling misaligned
requests, which the next patch tackles.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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The qiov_is_aligned() function checks whether a QEMUIOVector meets a
BlockDriverState's alignment requirements. This is needed by
virtio-blk-data-plane so:
1. Move the function from block/raw-posix.c to block/block.c.
2. Make it public in block/block.h.
3. Rename to bdrv_qiov_is_aligned().
4. Change return type from int to bool.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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When the raw-posix aio=thread code was moved from posix-aio-compat.c
to block/raw-posix.c, there was an unintended change to the ioctl code.
The code used to return the ioctl command, which posix_aio_read()
would later morph into a zero. This hack is not necessary anymore,
and in fact breaks scsi-generic (which expects a zero return code).
Remove it.
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Sheepdog supports both writeback/writethrough write but has not yet supported
DIRECTIO semantics which bypass the cache completely even if Sheepdog daemon is
set up with cache enabled.
Suppose cache is enabled on Sheepdog daemon size, the new cache control is
cache=writeback # enable the writeback semantics for write
cache=writethrough # enable the emulated writethrough semantics for write
cache=directsync # disable cache competely
Guest WCE toggling on the run time to toggle writeback/writethrough is also
supported.
Cc: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>
Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Stefan Hajnoczi <stefanha@gmail.com>
Signed-off-by: Liu Yuan <tailai.ly@taobao.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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A blank CD or DVD is visible as a zero-sized disks. Probing such
disks will lead to an EIO and a failure to start the VM. Treating
them as raw is a better solution.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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interface_set_client_capabilities() copies only the first few bits,
because it falls into a Classic C trap: you can declare a parameter
uint8_t caps[58], but the resulting parameter type is uint8_t *, not
uint8_t[58]. In particular, sizeof(caps) is sizeof(uint8_t *), not
the intended sizeof(uint8_t[58]).
Harmless, because the bits aren't used, yet. Broken in commit
c10018d6. Spotted by Coverity.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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The pointer arithmetic there is safe, but ugly. Coverity grouses
about it. However, the actual comparison is off by one: <= end
instead of < end. Fix by rewriting the check in a cleaner way.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Mention the directory in which the .stp file is being generated.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Just fold it into block-obj-y.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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