- 08 8月, 2012 8 次提交
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由 Orit Wasserman 提交于
Change XBZRLE cache size in bytes (the size should be a power of 2, it will be rounded down to the nearest power of 2). If XBZRLE cache size is too small there will be many cache miss. New query-migrate-cache-size QMP command and 'info migrate_cache_size' HMP command to query cache value. Signed-off-by: NBenoit Hudzia <benoit.hudzia@sap.com> Signed-off-by: NPetter Svard <petters@cs.umu.se> Signed-off-by: NAidan Shribman <aidan.shribman@sap.com> Signed-off-by: NOrit Wasserman <owasserm@redhat.com> Reviewed-by: NLuiz Capitulino <lcapitulino@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com>
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由 Orit Wasserman 提交于
In the outgoing migration check to see if the page is cached and changed, then send compressed page by using save_xbrle_page function. In the incoming migration check to see if RAM_SAVE_FLAG_XBZRLE is set and decompress the page (by using load_xbrle function). Signed-off-by: NBenoit Hudzia <benoit.hudzia@sap.com> Signed-off-by: NPetter Svard <petters@cs.umu.se> Signed-off-by: NAidan Shribman <aidan.shribman@sap.com> Signed-off-by: NOrit Wasserman <owasserm@redhat.com> Reviewed-by: NLuiz Capitulino <lcapitulino@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com>
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由 Orit Wasserman 提交于
For performance we are encoding long word at a time. For nzrun we use long-word-at-a-time NULL-detection tricks from strcmp(): using ((lword - 0x0101010101010101) & (~lword) & 0x8080808080808080) test to find out if any byte in the long word is zero. Signed-off-by: NBenoit Hudzia <benoit.hudzia@sap.com> Signed-off-by: NPetter Svard <petters@cs.umu.se> Signed-off-by: NAidan Shribman <aidan.shribman@sap.com> Signed-off-by: NOrit Wasserman <owasserm@redhat.com> Signed-off-by: NEric Blake <eblake@redhat.com> Reviewed-by: NLuiz Capitulino <lcapitulino@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com>
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由 Orit Wasserman 提交于
Implement Unsigned Little Endian Base 128. Signed-off-by: NOrit Wasserman <owasserm@redhat.com> Reviewed-by: NLuiz Capitulino <lcapitulino@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com>
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由 Orit Wasserman 提交于
Add MRU page cache mechanism. The page are accessed by their address. Signed-off-by: NBenoit Hudzia <benoit.hudzia@sap.com> Signed-off-by: NPetter Svard <petters@cs.umu.se> Signed-off-by: NAidan Shribman <aidan.shribman@sap.com> Signed-off-by: NOrit Wasserman <owasserm@redhat.com> Reviewed-by: NLuiz Capitulino <lcapitulino@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com>
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由 Orit Wasserman 提交于
Signed-off-by: NOrit Wasserman <owasserm@redhat.com> Reviewed-by: NLuiz Capitulino <lcapitulino@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com>
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由 Orit Wasserman 提交于
The management can enable/disable a capability for the next migration by using migrate-set-capabilities QMP command. The user can use migrate_set_capability HMP command. Signed-off-by: NOrit Wasserman <owasserm@redhat.com> Signed-off-by: NJuan Quintela <quintela@redhat.com> Reviewed-by: NLuiz Capitulino <lcapitulino@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com>
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由 Orit Wasserman 提交于
The management can query the current migration capabilities using query-migrate-capabilities QMP command. The user can use 'info migrate_capabilities' HMP command. Currently only XBZRLE capability is available. Signed-off-by: NOrit Wasserman <owasserm@redhat.com> Signed-off-by: NJuan Quintela <quintela@redhat.com> Reviewed-by: NLuiz Capitulino <lcapitulino@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com>
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- 07 8月, 2012 19 次提交
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由 Anthony Liguori 提交于
* kraxel/usb.58: usb-storage: fix SYNCHRONIZE_CACHE usb-storage: improve debug logging
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由 Anthony Liguori 提交于
* kwolf/for-anthony: qemu-img: use QemuOpts instead of QEMUOptionParameter in resize function qemu-iotests: Be more flexible with image creation options qemu-iotests: add 039 qcow2 lazy refcounts test qemu-io: add "abort" command to simulate program crash qcow2: implement lazy refcounts qemu-iotests: ignore qemu-img create lazy_refcounts output docs: add lazy refcounts bit to qcow2 specification qcow2: introduce dirty bit docs: add dirty bit to qcow2 specification qemu-iotests: add qed.py image manipulation utility qapi: generalize documentation of streaming commands ide scsi: Mess with geometry only for hard disk devices
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由 Gerd Hoffmann 提交于
Commit 59310659 is incomplete, we'll arrive in the scsi command complete callback in CSW state and must handle that case correctly. Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
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由 Gerd Hoffmann 提交于
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
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由 Anthony Liguori 提交于
in_addr_t isn't available on mingw32. Just use an unsigned long instead. I considered typedef'ing in_addr_t on mingw32 but this would potentially be brittle if mingw32 did introduce the type. Cc: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Dong Xu Wang 提交于
Signed-off-by: NDong Xu Wang <wdongxu@linux.vnet.ibm.com> Reviewed-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Kevin Wolf 提交于
qemu-iotests already filters out image creation options that may be present or not in order to get the same output in both cases. However, often it only considers the default value of the option. Cover all valid values instead so that ./check -o name=value can be used successfull for all of them. Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Stefan Hajnoczi 提交于
This tests establishes the basic post-conditions of the qcow2 lazy refcounts features: 1. If the image was closed normally, it is marked clean. 2. If an allocating write was performed and the image was not closed normally, then it is marked dirty. a. Written data can be read back successfully. b. The image file can be repaired and will be marked clean again. c. The image file is automatically repaired when opened read/write. Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Stefan Hajnoczi 提交于
Avoiding data loss and corruption is the top requirement for image file formats. The qemu-io "abort" command makes it possible to simulate program crashes and does not give the image format a chance to cleanly shut down. This command is useful for data integrity test cases. Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Stefan Hajnoczi 提交于
Lazy refcounts is a performance optimization for qcow2 that postpones refcount metadata updates and instead marks the image dirty. In the case of crash or power failure the image will be left in a dirty state and repaired next time it is opened. Reducing metadata I/O is important for cache=writethrough and cache=directsync because these modes guarantee that data is on disk after each write (hence we cannot take advantage of caching updates in RAM). Refcount metadata is not needed for guest->file block address translation and therefore does not need to be on-disk at the time of write completion - this is the motivation behind the lazy refcount optimization. The lazy refcount optimization must be enabled at image creation time: qemu-img create -f qcow2 -o compat=1.1,lazy_refcounts=on a.qcow2 10G qemu-system-x86_64 -drive if=virtio,file=a.qcow2,cache=writethrough Update qemu-iotests 031 and 036 since the extension header size changes when we add feature bit table entries. Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Stefan Hajnoczi 提交于
Hide the default lazy_refcounts=off output from qemu-img like we do with other image creation options. This ensures that existing golden outputs continue to pass despite the new option that has been added. Note that this patch applies before the one that actually introduces the lazy_refcounts=on|off option. This ensures git-bisect(1) continues to work. Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Stefan Hajnoczi 提交于
The lazy refcounts bit indicates that this image can take advantage of the dirty bit and that refcount updates can be postponed. Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Stefan Hajnoczi 提交于
This patch adds an incompatible feature bit to mark images that have not been closed cleanly. When a dirty image file is opened a consistency check and repair is performed. Update qemu-iotests 031 and 036 since the extension header size changes when we add feature bit table entries. Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Stefan Hajnoczi 提交于
The dirty bit will make it possible to perform lazy refcount updates, where the image file is not kept consistent all the time. Upon opening a dirty image file, it is necessary to perform a consistency check and repair any incorrect refcounts. Therefore the dirty bit must be an incompatible feature bit. We don't want old programs accessing a file with stale refcounts. Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Stefan Hajnoczi 提交于
The qed.py utility can inspect and manipulate QED image files. It can be used for testing to see the state of image metadata and also to inject corruptions into the image file. It also has a scrubbing feature to copy just the metadata out of an image file, allowing users to share broken image files without revealing data in bug reports. This has lived in my local repo for a long time but could be useful to others. Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Paolo Bonzini 提交于
Talk about background operations in general, rather than specifically about streaming. Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Markus Armbruster 提交于
Legacy -drive cyls=... are now ignored completely when the drive doesn't back a hard disk device. Before, they were first checked against a hard disk's limits, then ignored. Signed-off-by: NMarkus Armbruster <armbru@redhat.com> Acked-by: NPaolo Bonzini <pbonzini@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Paolo Bonzini 提交于
Commit b1f416aa breaks vhost_net because it always registers the virtio_pci_host_notifier_read() handler function on the ioeventfd, even when vhost_net.ko is using the ioeventfd. The result is both QEMU and vhost_net.ko polling on the same eventfd and the virtio_net.ko guest driver seeing inconsistent results: # ifconfig eth0 192.168.0.1 netmask 255.255.255.0 virtio_net virtio0: output:id 0 is not a head! To fix this, proceed the same as we do for irqfd: add a parameter to virtio_queue_set_host_notifier_fd_handler and in that case only set the notifier, not the handler. Cc: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Tested-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com> Reviewed-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Anthony Liguori 提交于
* kiszka/queues/slirp: slirp: Handle whole 127.0.0.0/8 network as local addresses.
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- 05 8月, 2012 11 次提交
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git://repo.or.cz/qemu/rth由 Blue Swirl 提交于
* 'axp-next' of git://repo.or.cz/qemu/rth: alpha-linux-user: Fix the getpriority syscall alpha-linux-user: Properly handle the non-rt sigprocmask syscall. alpha-linux-user: Fix a3 error return with v0 error bypass. linux-user: Translate pipe2 flags; add to strace linux-user: Allocate the right amount of space for non-fixed file maps linux-user: Handle O_SYNC, O_NOATIME, O_CLOEXEC, O_PATH linux-user: Sync fcntl.h bits with the kernel alpha-linux-user: Handle TARGET_SSI_IEEE_RAISE_EXCEPTION properly alpha-linux-user: Work around hosted mmap allocation problems alpha-linux-user: Fix signal handling
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由 Richard Henderson 提交于
Alpha uses unbiased priority values in the syscall, with the a3 return value signaling error conditions. Therefore, properly interpret the libc getpriority as needed for the guest rather than passing the host value through unchanged. Signed-off-by: NRichard Henderson <rth@twiddle.net>
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由 Richard Henderson 提交于
Name the syscall properly for QEMU, kernel source notwithstanding. Fix syntax errors in the code thus enabled within do_syscall. Reviewed-by: NPeter Maydell <peter.maydell@linaro.org> Signed-off-by: NRichard Henderson <rth@twiddle.net>
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由 Richard Henderson 提交于
We were failing to initialize a3 for syscalls that bypass the negative return value error check. Signed-off-by: NRichard Henderson <rth@twiddle.net>
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由 Richard Henderson 提交于
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org> Signed-off-by: NRichard Henderson <rth@twiddle.net>
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由 Richard Henderson 提交于
If we let the kernel handle the implementation of mmap_find_vma, via an anon mmap, we must use the size as indicated by the user and not the size truncated to the filesize. This happens often in ld.so, where we initially mmap the file to the size of the text+data+bss to reserve an area, then mmap+fixed over the top to properly handle data and bss. Signed-off-by: NRichard Henderson <rth@twiddle.net>
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由 Richard Henderson 提交于
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org> Signed-off-by: NRichard Henderson <rth@twiddle.net>
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由 Richard Henderson 提交于
For each target, only define the bits that appear in arch/target/include/asm/fcntl.h. Mirror the kernel's asm-generic layout by handling anything undefined afterward. Signed-off-by: NRichard Henderson <rth@twiddle.net>
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由 Richard Henderson 提交于
We weren't aggregating the exceptions, nor raising signals properly. Reviewed-by: NPeter Maydell <peter.maydell@linaro.org> Signed-off-by: NRichard Henderson <rth@twiddle.net>
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由 Richard Henderson 提交于
Signed-off-by: NRichard Henderson <rth@twiddle.net>
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由 Richard Henderson 提交于
Proper signal numbers were not defined, and EXCP_INTERRUPT was unhandled, leading to all sorts of subtle confusion. Reviewed-by: NPeter Maydell <peter.maydell@linaro.org> Signed-off-by: NRichard Henderson <rth@twiddle.net>
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- 04 8月, 2012 2 次提交
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由 Blue Swirl 提交于
Qualifier 'volatile' is not useful for applications, it's too strict for single threaded code but does not give the real atomicity guarantees needed for multithreaded code. Drop them and now useless casts. Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
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由 Peter Maydell 提交于
The Xen 4.1 probe never uses the return value from xc_interface_open(), so was provoking a compiler warning on newer gcc. Fix by not bothering to put the return value anywhere. Signed-off-by: NPeter Maydell <peter.maydell@linaro.org> Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
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