Anthony Liguori [Fri, 3 May 2013 16:20:02 +0000 (11:20 -0500)]
Merge remote-tracking branch 'stefanha/block' into staging
# By Fam Zheng (8) and others
# Via Stefan Hajnoczi
* stefanha/block:
qemu-iotests: Filter out 'adapter_type'
nbd: support large NBD requests
nbd: use g_slice_new() instead of a freelist
qemu-iotests: Filter out vmdk creation options
vmdk: add bdrv_co_write_zeroes
vmdk: store fields of VmdkMetaData in cpu endian
vmdk: change magic number to macro
vmdk: Add option to create zeroed-grain image
vmdk: add support for “zeroed‐grain” GTE
vmdk: named return code.
blockdev: Replace "undefined error" in qmp_block_resize
block: add read-only support to VHDX image format.
block: initial VHDX driver support framework - supports open and probe
block: vhdx header for the QEMU support of VHDX images
qemu: add castagnoli crc32c checksum algorithm
Raise the default max request size for nbd to 128KB (from 127KB) to get it
4KB aligned. This patch also allows the max request size to be increased
(via /sys/block/nbd<x>/queue/max_sectors_kb) to 32MB.
QEMU's 1 MB buffers are too small to handle these requests.
This patch allocates data buffers dynamically and allows up to 32 MB per
request.
Petar Jovanovic [Sun, 28 Apr 2013 01:18:36 +0000 (03:18 +0200)]
target-mips: fix calculation of overflow for SHLL.PH and SHLL.QB
This change corrects and simplifies how discard is calculated for shift
left logical vector instructions. It is used to detect overflow and set bit
22 in the DSPControl register.
The existing tests (shll_ph.c, shll_qb.c) are extended with the corner cases
that expose incorrectness in the previous implementation.
Fam Zheng [Thu, 2 May 2013 02:25:27 +0000 (10:25 +0800)]
vmdk: add bdrv_co_write_zeroes
Use special offset to write zeroes efficiently, when zeroed-grain GTE is
available. If zero-write an allocated cluster, cluster is leaked because
its offset pointer is overwritten by "0x1".
Fam Zheng [Thu, 2 May 2013 02:25:26 +0000 (10:25 +0800)]
vmdk: store fields of VmdkMetaData in cpu endian
Previously VmdkMetaData.offset is stored little endian while other
fields are cpu endian. This changes offset to cpu endian and convert
before writing to image. Signed-off-by: Fam Zheng <[email protected]> Signed-off-by: Stefan Hajnoczi <[email protected]>
Fam Zheng [Thu, 2 May 2013 02:25:24 +0000 (10:25 +0800)]
vmdk: Add option to create zeroed-grain image
Add image create option "zeroed-grain" to enable zeroed-grain GTE
feature of vmdk sparse extents. When this option is on, header version
of newly created extent will be 2 and VMDK4_FLAG_ZERO_GRAIN flag bit
will be set.
Fam Zheng [Thu, 2 May 2013 02:25:23 +0000 (10:25 +0800)]
vmdk: add support for “zeroed‐grain” GTE
Introduced support for zeroed-grain GTE, as specified in Virtual Disk
Format 5.0[1].
Recent VMware hosted platform products support a new “zeroed‐grain”
grain table entry (GTE). The zeroed‐grain GTE returns all zeros on
read. In other words, the zeroed‐grain GTE indicates that a grain
in the child disk is zero‐filled but does not actually occupy space
in storage. A sparse extent with zeroed‐grain GTE has the following
in its header:
* SparseExtentHeader.version = 2
* SparseExtentHeader.flags has bit 2 set
Other than the new flag and the possibly zeroed‐grain GTE, version 2
sparse extents are identical to version 1. Also, a zeroed‐grain GTE
has value 0x1 in the GT table.
[1] Virtual Disk Format 5.0, http://www.vmware.com/support/developer/vddk/vmdk_50_technote.pdf?src=vmdk Signed-off-by: Fam Zheng <[email protected]> Signed-off-by: Stefan Hajnoczi <[email protected]>
Fam Zheng [Thu, 2 May 2013 02:25:22 +0000 (10:25 +0800)]
vmdk: named return code.
Internal routines in vmdk.c previously return -1 on error and 0 on
success. More return values are useful for future changes such as
zeroed-grain GTE. Change all the magic `return 0` and `return -1` to
macro names:
Kevin Wolf [Thu, 2 May 2013 13:32:55 +0000 (15:32 +0200)]
blockdev: Replace "undefined error" in qmp_block_resize
We have an errno value that can be displayed, so we should just do that.
An easy way to reproduce this case is to resize a raw image to a size
that is too large for the host file system.
Jeff Cody [Mon, 29 Apr 2013 18:48:19 +0000 (14:48 -0400)]
block: add read-only support to VHDX image format.
This adds in read-only support to the VHDX image format. This supports
reads for fixed-size, and dynamic sized VHDX images.
Differencing files are still unsupported.
The image must be opened without BDRV_O_RDWR set, because we do not
yet update the headers. I.e., pass 'readonly=on' in the drive image
options from the QEMU commandline.
Jeff Cody [Mon, 29 Apr 2013 18:48:18 +0000 (14:48 -0400)]
block: initial VHDX driver support framework - supports open and probe
This is the initial block driver framework for VHDX image support
(i.e. Hyper-V image file formats), that supports opening VHDX files, and
parsing the headers.
This commit does not yet enable:
- reading
- writing
- updating the header
- differencing files (images with parents)
- log replay / dirty logs (only clean images)
This is based on Microsoft's VHDX specification:
"VHDX Format Specification v0.95", published 4/12/2012
https://www.microsoft.com/en-us/download/details.aspx?id=29681
Jeff Cody [Mon, 29 Apr 2013 18:48:17 +0000 (14:48 -0400)]
block: vhdx header for the QEMU support of VHDX images
This is based on Microsoft's VHDX specification:
"VHDX Format Specification v0.95", published 4/12/2012
https://www.microsoft.com/en-us/download/details.aspx?id=29681
These structures define the various header, metadata, and other
block structures defined in the VHDX specification.
Jeff Cody [Mon, 29 Apr 2013 18:48:16 +0000 (14:48 -0400)]
qemu: add castagnoli crc32c checksum algorithm
This adds the Castagnoli CRC32C algorithm, using the 0x11EDC6F41
polynomial.
This is extracted from the linux kernel cryptographic crc32.c module.
The algorithm is based on:
Castagnoli93: Guy Castagnoli and Stefan Braeuer and Martin Herrman
"Optimization of Cyclic Redundancy-Check Codes with 24
and 32 Parity Bits", IEEE Transactions on Communication,
Volume 41, Number 6, June 1993
Anthony Liguori [Thu, 2 May 2013 15:57:01 +0000 (10:57 -0500)]
Merge remote-tracking branch 'afaerber/qom-cpu' into staging
# By Igor Mammedov (21) and others
# Via Andreas Färber
* afaerber/qom-cpu: (29 commits)
Drop redundant resume_all_vcpus() from main()
cpus: Fix pausing TCG CPUs while in vCPU thread
target-i386: Replace cpuid_*features fields with a feature word array
target-i386: Break CPUID feature definition lines
target-i386/kvm.c: Code formatting changes
target-i386: Group together level, xlevel, xlevel2 fields
pc: Implement QEMUMachine::hot_add_cpu hook
QMP: Add cpu-add command
Add hot_add_cpu hook to QEMUMachine
target-i386: Move APIC to ICC bus
target-i386: Attach ICC bus to CPU on its creation
target-i386: Introduce ICC bus/device/bridge
cpu: Move cpu_write_elfXX_note() functions to CPUState
kvmvapic: Make dependency on sysbus.h explicit
target-i386: Replace MSI_SPACE_SIZE with APIC_SPACE_SIZE
target-i386: Do not allow to set apic-id once CPU is realized
target-i386: Introduce apic-id CPU property
target-i386: Introduce feat2prop() for CPU properties
acpi_piix4: Add infrastructure to send CPU hot-plug GPE to guest
cpu: Add helper cpu_exists(), to check if CPU with specified id exists
...
Anthony Liguori [Thu, 2 May 2013 15:56:07 +0000 (10:56 -0500)]
Merge remote-tracking branch 'mjt/trivial-patches' into staging
# By Andreas Färber (1) and others
# Via Michael Tokarev
* mjt/trivial-patches:
pvscsi: fix compilation on 32 bit hosts
Trivial grammar and spelling fixes
configure: Pick up libseccomp include path
Jan Kiszka [Mon, 20 Aug 2012 18:11:36 +0000 (20:11 +0200)]
Drop redundant resume_all_vcpus() from main()
VCPUs are either resumed directly via vm_start(), after the incoming
migration is done, or when a continue command is issued. We don't need
the explicit resume before entering main_loop().
Andreas Färber [Thu, 2 May 2013 09:22:05 +0000 (11:22 +0200)]
cpus: Fix pausing TCG CPUs while in vCPU thread
Due to a preceding while loop, no CPU would've been put into stopped
state. Reinitialize the variable.
This fixes commit d798e97456658ea7605303b7c69b04ec7df95c10 (Allow to use
pause_all_vcpus from VCPU context) for non-KVM case.
target-i386: Replace cpuid_*features fields with a feature word array
This replaces the feature-bit fields on both X86CPU and x86_def_t
structs with an array.
With this, we will be able to simplify code that simply does the same
operation on all feature words (e.g. kvm_check_features_against_host(),
filter_features_for_kvm(), add_flagname_to_bitmaps(), CPU feature-bit
property lookup/registration, and the proposed "feature-words" property)
The following field replacements were made on X86CPU and x86_def_t:
Break lines on kvm_check_features_against_host(), kvm_cpu_fill_host(),
and builtin_x86_defs, so they don't get too long once the *_features
fields are replaced by an array.
Add appropriate spaces around operators, and break line where it needs
to be broken to allow feature-words array to be introduced without
having too-long lines.
This fixes the following error:
In file included from qemu/include/trace.h:4:0,
from trace/generated-events.c:3:
./trace/generated-tracers.h: In function ‘trace_pvscsi_get_sg_list’:
./trace/generated-tracers.h:4271:9: error: format ‘%lu’ expects argument of
type ‘long unsigned int’, but argument 4 has type ‘size_t’ [-Werror=format]
Igor Mammedov [Mon, 29 Apr 2013 15:02:50 +0000 (17:02 +0200)]
target-i386: Introduce ICC bus/device/bridge
Provides a hotpluggable bus for APIC and CPU.
* icc-bridge will serve as a parent for icc-bus and provide
mmio mapping services to child icc-devices.
* icc-device will replace SysBusDevice as a parent of APIC
and IOAPIC devices.
Igor Mammedov [Thu, 25 Apr 2013 14:05:30 +0000 (16:05 +0200)]
kvmvapic: Make dependency on sysbus.h explicit
Allows kvmvapic to compile if sysbus.h is removed from apic_internal.h,
from which it is indirectly included.
sysbus.h will be removed from apic_internal.h after converting
APICs to ICCDevice.
Igor Mammedov [Fri, 26 Apr 2013 16:04:32 +0000 (18:04 +0200)]
target-i386: Introduce feat2prop() for CPU properties
This helper replaces '_' with '-' in a uniform way.
As a side effect, even custom mappings must use '-' now.
Signed-off-by: Igor Mammedov <[email protected]>
[AF: Split off; operate on NUL-terminated string rather than '=' delimiter] Signed-off-by: Andreas Färber <[email protected]>
Igor Mammedov [Thu, 25 Apr 2013 14:05:25 +0000 (16:05 +0200)]
acpi_piix4: Add infrastructure to send CPU hot-plug GPE to guest
* introduce processor status bitmask visible to guest at 0xaf00 addr,
where ACPI asl code expects it
* set bit corresponding to APIC ID in processor status bitmask on
receiving CPU hot-plug notification
* trigger CPU hot-plug SCI, to notify guest about CPU hot-plug event
Igor Mammedov [Tue, 23 Apr 2013 08:29:41 +0000 (10:29 +0200)]
cpu: Introduce get_arch_id() method and override it for X86CPU
get_arch_id() adds possibility for generic code to get a guest-visible
CPU ID without accessing CPUArchState.
If derived classes don't override it, it will return cpu_index.
Override it on target-i386 in X86CPU to return the APIC ID.
Jason Wang [Thu, 25 Apr 2013 07:26:54 +0000 (15:26 +0800)]
virtio-net: count VIRTIO_NET_F_MAC when calculating config_len
Commit 14f9b664 (hw/virtio-net.c: set config size using host features) tries to
calculate config size based on the host features. But it forgets the
VIRTIO_NET_F_MAC were always set for qemu later. This will lead a zero config
len for virtio-net device when both VIRTIO_NET_F_STATUS and VIRTIO_NET_F_MQ were
disabled form command line. Then qemu will crash when user tries to read the
config of virtio-net.
Fix this by counting VIRTIO_NET_F_MAC and make sure the config at least contains
the mac address.
On s390 the disabled wait state indicates a state of attention.
For example Linux uses that state after a panic. Lets
put the system into panicked state.
An alternative implementation would be to state
disabled-wait <address> instead of pause in the action field.
(e.g. z/OS, z/VM and other classic OSes use the address of the
disabled wait to indicate an error code).
Hu Tao [Fri, 26 Apr 2013 03:24:42 +0000 (11:24 +0800)]
introduce a new qom device to deal with panicked event
pvpanic device is used to send guest panic event from guest to qemu.
When guest panic happens, pvpanic device driver will write a event
number to IO port 0x505(which is the IO port occupied by pvpanic device,
by default). On receiving the event, pvpanic device will pause guest
cpu(s), and send a qmp event QEVENT_GUEST_PANICKED.
The following error occurs when building dtc module:
CHK version_gen.h
CC libfdt/fdt.o
cc1: error: dtc: No such file or directory [-Werror]
cc1: all warnings being treated as errors
make[1]: *** [libfdt/fdt.o] Error 1
make: *** [subdir-dtc] Error 2
In rules.mak, "-I$(<D) -I$(@D)" was expanded to "-Idtc -I." when
building submodule dct. Due to the using of "-Wmissing-include-dirs,
a warning would be rarsed. To avoid it, add "-I$(<D) -I$(@D)" to
QEMU_INCLUDES instead of QEMU_CFLAGS so that QEMU_CFLAGS does not
contain the "-Idtc".
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