The madvise for zeroed out pages was introduced when every transferred
zero page was memset to zero and thus allocated. Since commit
211ea740 we check for zeroness of a target page before we memset
it to zero. Additionally we memmap target memory so it is essentially
zero initialized (except for e.g. option roms and bios which are loaded
into target memory although they shouldn't).
It was reported recently that this madvise causes a performance degradation
in some situations. As the madvise should only be called rarely and if it's called
it is likely on a busy page (it was non-zero and changed to zero during migration)
drop it completely.
Reported-By: Zhang Haoyu <haoyu.zhang@huawei.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Lieven <pl@kamp.de>
Signed-off-by: Juan Quintela <quintela@redhat.com>
# By Luiz Capitulino (1) and Richard Henderson (1)
# Via Luiz Capitulino
* luiz/queue/qmp:
MAINTAINERS: add git tree info for HMP, QMP and QAPI
Adjust qapi-visit for python-2.4.3
Message-id: 1384281985-11100-1-git-send-email-lcapitulino@redhat.com
Signed-off-by: Anthony Liguori <aliguori@amazon.com>
This reverts PCI master abort support - we'll want it
eventually but it exposes too many core bugs to be safe for 1.7.
This also reverts a recent exec.c change that was an
attempt to work-around some of these core bugs.
Also included are small fixes in pc and virtio,
and a core loader fix for PPC bamboo.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'mst/tags/for_anthony' into staging
pci, pc, virtio bug fixes
This reverts PCI master abort support - we'll want it
eventually but it exposes too many core bugs to be safe for 1.7.
This also reverts a recent exec.c change that was an
attempt to work-around some of these core bugs.
Also included are small fixes in pc and virtio,
and a core loader fix for PPC bamboo.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Sun 10 Nov 2013 05:13:22 AM PST using RSA key ID D28D5469
# gpg: Can't check signature: public key not found
# By Michael S. Tsirkin (3) and others
# Via Michael S. Tsirkin
* mst/tags/for_anthony:
Revert "exec: limit system memory size"
Revert "hw/pci: partially handle pci master abort"
loader: drop return value for rom_add_blob_fixed
acpi-build: disable with -no-acpi
virtio-net: only delete bh that existed
Fix pc migration from qemu <= 1.5
Message-id: 1384159176-31662-1-git-send-email-mst@redhat.com
Signed-off-by: Anthony Liguori <aliguori@amazon.com>
# By Dmitry Fleytman (1) and others
# Via Stefan Hajnoczi
* stefanha/net:
virtio-net: broken RX filtering logic fixed
net: fix qemu_flush_queued_packets() in presence of a hub
net: disallow to specify multicast MAC address
Message-id: 1383928804-28866-1-git-send-email-stefanha@redhat.com
Signed-off-by: Anthony Liguori <aliguori@amazon.com>
# By Jeff Cody (26) and others
# Via Stefan Hajnoczi
* stefanha/block: (37 commits)
block: Round up total_sectors
block: vhdx qemu-iotest - log replay of data sector
block: qemu-iotests for vhdx, add write test support
block: vhdx - update _make_test_img() to filter out vhdx options
block: vhdx - add .bdrv_create() support
block: vhdx - fix comment typos in header, fix incorrect struct fields
block: vhdx - break out code operations to functions
block: vhdx - move more endian translations to vhdx-endian.c
block: vhdx - remove BAT file offset bit shifting
block: vhdx write support
block: vhdx - add log write support
block: vhdx - add region overlap detection for image files
block: vhdx - log parsing, replay, and flush support
block: vhdx code movement - move vhdx_close() above vhdx_open()
block: vhdx - update log guid in header, and first write tracker
block: vhdx - break endian translation functions out
block: vhdx - log support struct and defines
block: vhdx code movement - VHDXMetadataEntries and BDRVVHDXState to header.
block: vhdx - add header update capability.
block: vhdx - minor comments and typo correction.
...
Message-id: 1383905551-16411-1-git-send-email-stefanha@redhat.com
Signed-off-by: Anthony Liguori <aliguori@amazon.com>
- add missing debug feature to dc233c xtensa core;
- fix qemu abort caused by gdb attempt to invalidate a breakpoint by
virtual address for which there's no mapping.
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Merge remote-tracking branch 'filippov/tags/20131108-xtensa' into staging
Two small fixes for 1.7:
- add missing debug feature to dc233c xtensa core;
- fix qemu abort caused by gdb attempt to invalidate a breakpoint by
virtual address for which there's no mapping.
# gpg: Signature made Thu 07 Nov 2013 09:32:19 PM PST using RSA key ID F83FA044
# gpg: Can't check signature: public key not found
# By Max Filippov
# Via Max Filippov
* filippov/tags/20131108-xtensa:
target-xtensa: add missing DEBUG section to dc233c config
exec: fix breakpoint_invalidate when pc may not be translated
Message-id: 1383889643-21621-1-git-send-email-jcmvbkbc@gmail.com
Signed-off-by: Anthony Liguori <aliguori@amazon.com>
# By Gerd Hoffmann
# Via Gerd Hoffmann
* kraxel/audio.3:
ossaudio: check for oss support in oss_audio_init
Revert "ossaudio: do not enable by default"
Message-id: 1383823947-5132-1-git-send-email-kraxel@redhat.com
Signed-off-by: Anthony Liguori <aliguori@amazon.com>
# By Stefan Weil
# Via Stefan Weil
* sweil/mingw:
linux-user: Fix stat64 syscall for SPARC64
configure: Add config.status to recreate the current configuration
nsis: Improved support for parallel installation of 32 and 64 bit code
Message-id: 1383804909-376-1-git-send-email-sw@weilnetz.de
Signed-off-by: Anthony Liguori <aliguori@amazon.com>
We say we support python 2.4, but python 2.4.3 does not
support the "expr if test else expr" syntax used here.
This allows QEMU to compile on RHEL 5.3, the last release for ia64.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
This reverts commit 818f86b883.
This was a work-around for bugs elsewhere in the system,
exposed by commit a53ae8e934cd54686875b5bcfc2f434244ee55d6:
"hw/pci: partially handle pci master abort"
since that's reverted now, the work-around is not required for 1.7
anymore.
The proper fix is supporting full 64 bit addresses in the radix tree.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Marcel Apfelbaum <marcel.a@redhat.com>
This reverts commit a53ae8e934.
The patch being reverted introduced a low-priority memory region
covering all 64 bit pci address space. This exposed the following bugs
elsewhere in the code:
1. Some memory regions have INT64_MAX size, where the
intent was all 64 bit address space.
This results in a sub-page region, should be UINT64_MAX.
2. page table rendering in exec.c ignores physical address bits
above TARGET_PHYS_ADDR_SPACE_BITS.
Access outside this range (e.g. from device DMA, or gdb stub)
ends up with a wrong region. Registering a region outside this
range leads to page table corruption.
3. Some regions overlap PCI hole and have same priority.
This only works as long as no device uses the overlapping address.
It doesn't look like we can resolve all issues in time for 1.7.
Let's fix the bugs first and apply afterwards for 1.8.
Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
rom_add_blob never fails, and neither does rom_add_blob_fixed,
so there's no need to return value from it.
In fact, rom_add_blob_fixed was erroneously returning -1 unconditionally
which made the only system that checked the return value -M bamboo fail
to start.
Drop the return value and drop checks from ppc440_bamboo to
fix this failure.
Reported-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
QEMU will currently crash if started with -no-acpi flag
since acpi build code probes the PM device which isn't present
in this configuration.
To fix, don't expose ACPI tables to guest when acpi has been
disabled from command line.
Fixes LP# 1248854
https://bugs.launchpad.net/qemu/+bug/1248854
Reported-by: chao zhou <chao.zhou@intel.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
We delete without check whether it existed during exit. This will lead NULL
pointer deference since it was created conditionally depends on guest driver
status and features. So add a check of existence before trying to delete it.
Cc: qemu-stable@nongnu.org
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The following commit introduced a migration incompatibility:
commit 568f0690fd
Author: David Gibson <david@gibson.dropbear.id.au>
Date: Thu Jun 6 18:48:49 2013 +1000
pci: Replace pci_find_domain() with more general pci_root_bus_path()
The issue is that i440fx savevm idstr went from 0000:00:00.0/I440FX to
0000:00.0/I440FX. Unfortunately we are stuck with the breakage for
1.6 machine types.
Add a compat property to maintain the busted idstr for the 1.6 machine
types, but revert to the old style format for 1.7+, and <= 1.5.
Tested with migration from qemu 1.5, qemu 1.6, and qemu.git.
Cc: qemu-stable@nongnu.org
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Upon processing of VIRTIO_NET_CTRL_MAC_TABLE_SET command
multicast list overwrites unicast list in mac_table.
This leads to broken logic for both unicast and multicast RX filtering.
Signed-off-by: Dmitry Fleytman <dfleytma@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Do not return after net_hub_flush(). Always flush callee network client
incoming queue.
Signed-off-by: Sergey Fedorov <s.fedorov@samsung.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
[Assigning a multicast MAC address to a NIC leads to confusing behavior.
Reject multicast MAC addresses so users are alerted to their error
straight away.
The "net/eth.h" in6_addr rename prevents a name collision with
<netinet/in.h> on Linux.
-- Stefan]
Signed-off-by: Dmitry V. Krivenok <krivenok.dmitry@gmail.com>
Reviewed-by: Amos Kong <kongjianjun@gmail.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Since b94a2610, bdrv_getlength() is omitted when probing image. VMDK
monolithicFlat is broken by that because a file < 512 bytes can't be
read with its total_sectors truncated to 0. This patch round up the size
to BDRV_SECTOR_SIZE, when a image size is not sector aligned.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This fixes qemu abort with the following message:
include/qemu/int128.h:22: int128_get64: Assertion `!a.hi' failed.
which happens due to attempt to invalidate breakpoint by virtual address
for which get_phys_page_debug couldn't find mapping.
For more details see
http://lists.nongnu.org/archive/html/qemu-devel/2013-09/msg04582.html
Cc: qemu-stable@nongnu.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
This tests the replay of a data sector in a VHDX image file.
The image file is a 10G dynamic image, with 4MB block size. The
image was created with qemu-img, and the log left unplayed by
modification of the vhdx image format driver.
It was verified under both QEMU and Hyper-V that the image file,
post log replay, matched.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This removes the IMGFMT_GENERIC blocker for read-only, so existing
iotests run read/write tests for vhdx images created by qemu-img (e.g.
tests 001, 002, 003).
In addition, this updates the sample image test for the Hyper-V
created image, to verify we can write it as well.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The non-global option output is suppresed in _make_test_img() for
output verification in the 0?? tests. This adds suppression for
the vhdx-unique options as well. This allows check -vhdx to run
successfully.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This adds support for VHDX image creation, for images of type "Fixed"
and "Dynamic". "Differencing" types (i.e., VHDX images with backing
files) are currently not supported.
Options for image creation include:
* log size:
The size of the journaling log for VHDX. Minimum is 1MB,
and it must be a multiple of 1MB. Invalid log sizes will be
silently fixed by rounding up to the nearest MB.
Default is 1MB.
* block size:
This is the size of a payload block. The range is 1MB to 256MB,
inclusive, and must be a multiple of 1MB as well. Invalid sizes
and multiples will be silently fixed. If '0' is passed, then
a sane size is chosen (depending on virtual image size).
Default is 0 (Auto-select).
* subformat:
- "dynamic"
An image without data pre-allocated.
- "fixed"
An image with data pre-allocated.
Default is "dynamic"
When creating the image file, the lettered sections are created:
-----------------------------------------------------------------.
| (A) | (B) | (C) | (D) | (E)
| File ID | Header1 | Header 2 | Region Tbl 1 | Region Tbl 2
| | | | |
.-----------------------------------------------------------------.
0 64KB 128KB 192KB 256KB 320KB
.---- ~ ----------- ~ ------------ ~ ---------------- ~ -----------.
| (F) | (G) | (H) |
| Journal Log | BAT / Bitmap | Metadata | .... data ......
| | | |
.---- ~ ----------- ~ ------------ ~ ---------------- ~ -----------.
1MB (var.) (var.) (var.)
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
VHDXPage83Data and VHDXParentLocatorHeader both incorrectly had their
MSGUID fields set as arrays of 16. This is incorrect (it stems from
an early version where those fields were uint_8 arrays). Those fields
were, up to this patch, unused.
Also, there were a couple of typos and incorrect wording in comments,
and those have been fixed up as well.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This is preperation for vhdx_create(). The ability to write headers,
and calculate the number of BAT entries will be needed within the
create() functions, so move this relevant code into helper functions.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
In preparation for vhdx_create(), move more endian translation
functions out to vhdx-endian.c.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Bit shifting can be fun, but in this case it was unnecessary. The
upper 44 bits of the 64-bit BAT entry is specifies the File Offset,
so we shifted the bits to get access to the value.
However, per the spec the value is in MB. So we dutifully shifted back
to the left by 20 bits, to convert to a true uint64_t file offset.
This replaces those steps with just a bit mask, to get rid of the lower
20 bits instead.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This adds support for writing to VHDX image files, using coroutines.
Writes into the BAT table goes through the VHDX log. Currently, BAT
table writes occur when expanding a dynamic VHDX file, and allocating a
new BAT entry.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This adds support for writing to the VHDX log.
For spec details, see VHDX Specification Format v1.00:
https://www.microsoft.com/en-us/download/details.aspx?id=34750
There are a few limitations to this log support:
1.) There is no caching yet
2.) The log is flushed after each entry
The primary write interface, vhdx_log_write_and_flush(), performs a log
write followed by an immediate flush of the log.
As each log entry sector is a minimum of 4KB, partial sector writes are
filled in with data from the disk write destination.
If the current file log GUID is 0, a new GUID is generated and updated
in the header.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Regions in the image file cannot overlap - the log, region tables,
and metdata must all be unique and non-overlapping.
This adds region checking by means of a QLIST; there can be a variable
number of regions and metadata (there may be metadata or region tables
that we do not recognize / know about, but are not required).
This adds the capability to register a region for later checking, and
to check against registered regions for any overlap.
Also, if neither the BAT or Metadata region tables are found, return
error.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This adds support for VHDX v0 logs, as specified in Microsoft's
VHDX Specification Format v1.00:
https://www.microsoft.com/en-us/download/details.aspx?id=34750
The following support is added:
* Log parsing, and validation - validate that an existing log
is correct.
* Log search - search through an existing log, to find any valid
sequence of entries.
* Log replay and flush - replay an existing log, and flush/clear
the log when complete.
The VHDX log is a circular buffer, with elements (sectors) of 4KB.
A log entry is a variably-length number of sectors, that is
comprised of a header and 'descriptors', that describe each sector.
A log may contain multiple entries, know as a log sequence. In a log
sequence, each log entry immediately follows the previous entry, with an
incrementing sequence number. There can only ever be one active and
valid sequence in the log.
Each log entry must match the file log GUID in order to be valid (along
with other criteria). Once we have flushed all valid log entries, we
marked the file log GUID to be zero, which indicates a buffer with no
valid entries.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Allow tracking of first file write in the VHDX image, as well as
the ability to update the GUID in the header. This is in preparation
for log support.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This moves the endian translation functions out from the vhdx.c source,
into a separate source file. In addition to the previously defined
endian functions, new endian translation functions for log support are
added as well.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This adds some magic number defines, and internal structure definitions
for VHDX log replay support. The struct VHDXLogEntries does not reflect
an on-disk data structure, and thus does not need to be packed.
Some minor code style fixes are applied as well.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
In preparation for VHDX log support, move these structures to the
header.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This adds the ability to update the headers in a VHDX image, including
generating a new MS-compatible GUID.
As VHDX depends on uuid.h, VHDX is now a configurable build option. If
VHDX support is enabled, that will also enable uuid as well. The
default is to have VHDX enabled.
To enable/disable VHDX: --enable-vhdx, --disable-vhdx
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Just a couple of minor comments to help note where allocated
buffers are freed, and a typo fix.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
error_setg_errno() may overwrite errno; therefore, its value should be
read before calling that function and not afterwards.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Ensure that the device_add error code path deletes device objects.
Failure to do so not only leaks the objects but can also keep other
objects (like drive or netdev) alive due to qdev properties holding
references.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The following should work:
(qemu) drive_add if=none,id=drive0
(qemu) drive_del drive0
(qemu) drive_add if=none,id=drive0
Previous versions of QEMU produced a duplicate ID error because
drive_add leaked the options.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Add a qtest qmp() function that returns the response object. This
allows test cases to verify the result or to check for error responses.
It also allows waiting for QMP events.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Existing qmp() callers do not expect a response object. In order to
implement real QMP test cases it will be necessary to inspect the
response object.
Rename qmp() to qmp_discard_response(). Later patches will introduce a
qmp() function that returns the response object and tests that use it.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
These memory leaks also make drive_add if=none,id=drive0 without a file=
option leak the options list. This keeps ID "drive0" around forever.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
When creating images with backing files in the test, the backing
file argument was not quoted properly. This caused the test to fail
when run from a pathname with a space. Pass the backing argument in
with the -b option to _make_test_img, so it can be properly quoted.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
There were still a couple of instances of unquoted usage of
$TEST_IMG and $TEST_IMG.orig. Quoted these so they will not fail
on pathnames with spaces in them.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
