- 22 12月, 2011 1 次提交
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由 Paolo Bonzini 提交于
Outside coroutines, avoid busy waiting on EAGAIN by temporarily making the socket blocking. The API of qemu_recvv/qemu_sendv is slightly different from do_readv/do_writev because they do not handle coroutines. It returns the number of bytes written before encountering an EAGAIN. The specificity of yielding on EAGAIN is entirely in qemu-coroutine.c. Reviewed-by: NMORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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- 15 12月, 2011 1 次提交
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由 Paolo Bonzini 提交于
qemu_iovec_destroy does not clear the QEMUIOVector fully, and the data could thus be used after free or freed again. While I do not know any example in the tree, I observed this using virtio-scsi (and SCSI scatter/gather) when canceling DMA requests. Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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- 29 11月, 2011 2 次提交
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由 Markus Armbruster 提交于
strtosz() & friends require the size to be at the end of the string, or be followed by whitespace or ','. I find this surprising, because the name suggests it works like strtol(). The check simplifies callers that accept exactly that follow set slightly. No such callers exist. The check is redundant for callers that accept a smaller follow set, and thus need to check themselves anyway. Right now, this is the case for all but one caller. All of them neglected to check, or checked incorrectly, but the previous few commits fixed them up. Finally, the check is problematic for callers that accept a larger follow set. This is the case in monitor_parse_command(). Fortunately, the problems there are relatively harmless. monitor_parse_command() uses strtosz() for argument type 'o'. When the last argument is of type 'o', a trailing ',' is diagnosed differently than other trailing junk: (qemu) migrate_set_speed 1x invalid size (qemu) migrate_set_speed 1, migrate_set_speed: extraneous characters at the end of line A related inconsistency exists with non-last arguments. No such command exists, but let's use memsave to explore the inconsistency. The monitor permits, but does not require whitespace between arguments. For instance, "memsave (1-1)1024foo" is parsed as command memsave with three arguments 0, 1024 and "foo". Yes, this is daft, but at least it's consistently daft. If I change memsave's second argument from 'i' to 'o', then "memsave (1-1)1foo" is rejected, because the size is followed by an 'f'. But "memsave (1-1)1," is still accepted, and duly saves to file ",". We don't have any users of strtosz that profit from the check. In the users we have, it appears to encourage sloppy error checking, or gets in the way. Drop the bothersome check. Signed-off-by: NMarkus Armbruster <armbru@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Markus Armbruster 提交于
Commit 9f9b17a4's strtosz() defaults a missing suffix to 'M', except it rejects fractions then (switch case 0). When commit d8427002 introduced strtosz_suffix(), that changed: fractions are no longer rejected, because we go to switch case 'M' on missing suffix now. Not mentioned in commit message, probably unintentional. Not worth changing back now. Because case 0 is still around, you can get the old behavior by passing a zero default_suffix to strtosz_suffix() or strtosz_suffix_unit(). Undocumented and not used. Drop. Commit d8427002 also neglected to update the function comment. Fix it up. Signed-off-by: NMarkus Armbruster <armbru@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 02 11月, 2011 1 次提交
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由 Stefan Berger 提交于
Move the parsing of a filedescriptor into a common function qemu_parse_fd() so others can use it as well. Have net.c call this function. v2: - moving qemu_parse_fd into cutils.c Signed-off-by: NStefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 25 8月, 2011 1 次提交
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由 Jan Kiszka 提交于
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
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- 21 8月, 2011 1 次提交
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由 Anthony Liguori 提交于
qemu_malloc/qemu_free no longer exist after this commit. Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 05 8月, 2011 1 次提交
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由 Joerg Roedel 提交于
This function does the same as the strtosz_suffix function except that it allows to specify the unit to which the k/M/B/T suffixes apply. This function will be used later to parse the tsc-frequency from the command-line. Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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- 10 2月, 2011 1 次提交
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由 Chunqiang Tang 提交于
This patch fixes the following bug in QCOW2. For a QCOW2 image that is larger than its base image, when handling a read request straddling over the end of the base image, the QCOW2 driver attempts to read beyond the end of the base image and the request would fail. This bug was found by Fast Virtual Disk (FVD)'s fully automated testing tool. The following test triggered the bug. dd if=/dev/zero of=/var/ramdisk/truth.raw count=0 bs=1 seek=1098561536 dd if=/dev/zero of=/var/ramdisk/zero-500M.raw count=0 bs=1 seek=593099264 ./qemu-img create -f qcow2 -ocluster_size=65536,backing_fmt=blksim -b /var/ramdisk/zero-500M.raw /var/ramdisk/test.qcow2 1098561536 ./qemu-io --auto --seed=30477694 --truth=/var/ramdisk/truth.raw --format=qcow2 --test=blksim:/var/ramdisk/test.qcow2 --verify_write=true --compare_before=false --compare_after=true --round=100000 --parallel=100 --io_size=10485760 --fail_prob=0 --cancel_prob=0 --instant_qemubh=true Signed-off-by: NChunqiang Tang <ctang@us.ibm.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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- 31 1月, 2011 4 次提交
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由 Jes Sorensen 提交于
Signed-off-by: NJes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Jes Sorensen 提交于
Signed-off-by: NJes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Jes Sorensen 提交于
Signed-off-by: NJes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Jes Sorensen 提交于
isspace() behavior is undefined for signed char. Bug pointed out by Eric Blake, thanks! Signed-off-by: NJes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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- 24 1月, 2011 1 次提交
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由 Jes Sorensen 提交于
strtosz() needs to return a 64 bit type even on 32 bit architectures. Otherwise qemu-img will fail to create disk images >= 2GB Signed-off-by: NJes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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- 17 12月, 2010 1 次提交
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由 Jes Sorensen 提交于
This introduces strtosz_suffix() which allows the caller to specify a default suffix in case the non default of MB is wanted. strtosz() is kept as a wrapper for strtosz_suffix() which keeps it's current default of MB. Signed-off-by: NJes Sorensen <Jes.Sorensen@redhat.com> Reviewed-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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- 04 11月, 2010 1 次提交
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由 Jes Sorensen 提交于
strtosz() returns -1 on error. It now supports human unit formats in eg. 1.0G, with better error handling. The following suffixes are supported: B/b = bytes K/k = KB M/m = MB G/g = GB T/t = TB This patch changes -numa and -m input to use strtosz(). Signed-off-by: NJes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 21 9月, 2010 1 次提交
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由 Kevin Wolf 提交于
This adds two functions that work on QEMUIOVectors and will be used by the next qcow2 patches. Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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- 18 3月, 2010 1 次提交
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由 Paolo Bonzini 提交于
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 20 9月, 2009 1 次提交
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由 Blue Swirl 提交于
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
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- 11 9月, 2009 2 次提交
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由 Christoph Hellwig 提交于
If we are flushing the caches for our image files we only care about the data (including the metadata required for accessing it) but not things like timestamp updates. So try to use fdatasync instead of fsync to implement the flush operations. Unfortunately many operating systems still do not support fdatasync, so we add a qemu_fdatasync wrapper that uses fdatasync if available as per the _POSIX_SYNCHRONIZED_IO feature macro or fsync otherwise. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Kevin Wolf 提交于
One performance problem of qcow2 during the initial image growth are sequential writes that are not cluster aligned. In this case, when a first requests requires to allocate a new cluster but writes only to the first couple of sectors in that cluster, the rest of the cluster is zeroed - just to be overwritten by the following second request that fills up the cluster. Let's try to merge sequential write requests to the same cluster, so we can avoid to write the zero padding to the disk in the first place. As a nice side effect, also other formats take advantage of dealing with less and larger requests. Signed-off-by: NKevin Wolf <kwolf@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 10 7月, 2009 1 次提交
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由 Anthony Liguori 提交于
This reverts commit 707c0dbc. Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 02 7月, 2009 1 次提交
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由 Blue Swirl 提交于
Fix missing strnlen (a GNU extension) problems by using qemu_strnlen used for user emulators also for system emulators. Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
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- 30 6月, 2009 1 次提交
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由 Ram Pai 提交于
Problem: It is impossible to feed filenames with the character colon because qemu interprets such names as a protocol. For example filename scsi:0, is interpreted as a protocol by name "scsi". This patch allows user to espace colon characters. For example the above filename can now be expressed either as 'scsi\:0' or as file:scsi:0 anything following the "file:" tag is interpreted verbatin. However if "file:" tag is omitted then any colon characters in the string must be escaped using backslash. Here are couple of examples: scsi\:0\:abc is a local file scsi:0:abc http\://myweb is a local file by name http://myweb file:scsi:0:abc is a local file scsi:0:abc file:http://myweb is a local file by name http://mywebSigned-off-by: NRam Pai <linuxram@us.ibm.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 14 5月, 2009 1 次提交
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由 Paul Brook 提交于
Include assert.h from qemu-common.h and remove other direct uses. cpu-all.h still need to include it because of the dyngen-exec.h hacks Signed-off-by: NPaul Brook <paul@codesourcery.com>
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- 29 3月, 2009 1 次提交
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由 aliguori 提交于
Allow to initialize a QEMUIOVector from an externally allocated iovec. qiov->nalloc is initialized to -1 to indicate external storage for qiov->iov and all functions dealing with memory management assert on the iovec beeing an internally managed first. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6902 c046a42c-6fe2-441c-8c8c-71466251a162
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- 06 2月, 2009 1 次提交
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由 aliguori 提交于
Add a helper to zero out an existing iovec. Removes the need to deallocate and reallocate it. Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6523 c046a42c-6fe2-441c-8c8c-71466251a162
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- 27 1月, 2009 1 次提交
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由 aliguori 提交于
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6448 c046a42c-6fe2-441c-8c8c-71466251a162
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- 23 1月, 2009 1 次提交
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由 aliguori 提交于
In general, it is not possible to predict the size of of an I/O vector since a contiguous guest region may map to a disconiguous host region. Add some helpers to manage I/O vector growth. Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6396 c046a42c-6fe2-441c-8c8c-71466251a162
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- 12 12月, 2008 1 次提交
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由 blueswir1 提交于
Fix compiler warning on OSX, reported by Andreas Faerber. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5982 c046a42c-6fe2-441c-8c8c-71466251a162
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- 05 12月, 2008 2 次提交
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由 aliguori 提交于
As suggested by Laurent Desnogues. Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5872 c046a42c-6fe2-441c-8c8c-71466251a162
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由 aliguori 提交于
This is needed for virtio. The implementation is originally from Marcelo Tosatti. Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5868 c046a42c-6fe2-441c-8c8c-71466251a162
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- 16 11月, 2008 1 次提交
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由 blueswir1 提交于
when compiling on NetBSD: warning: array subscript has type 'char' Signed-off-by: NChristoph Egger <Christoph.Egger@amd.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5727 c046a42c-6fe2-441c-8c8c-71466251a162
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- 09 11月, 2008 1 次提交
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由 balrog 提交于
The use of strncat and strndup was correct, pstrcpy and pstrdup wasn't. I'll try to restore building on non-gnu OSes in a later commit. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5651 c046a42c-6fe2-441c-8c8c-71466251a162
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- 25 10月, 2008 1 次提交
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由 blueswir1 提交于
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5532 c046a42c-6fe2-441c-8c8c-71466251a162
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- 09 6月, 2008 1 次提交
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由 pbrook 提交于
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4710 c046a42c-6fe2-441c-8c8c-71466251a162
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- 12 4月, 2008 1 次提交
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由 aurel32 提交于
(Kevin Wolf) git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4191 c046a42c-6fe2-441c-8c8c-71466251a162
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- 11 11月, 2007 2 次提交
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由 pbrook 提交于
Remove QEMU_TOOL. Replace with QEMU_IMG and NEED_CPU_H. Avoid linking qemu-img against whole system emulatior. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3578 c046a42c-6fe2-441c-8c8c-71466251a162
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由 bellard 提交于
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3570 c046a42c-6fe2-441c-8c8c-71466251a162
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- 17 9月, 2007 1 次提交
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由 ths 提交于
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3173 c046a42c-6fe2-441c-8c8c-71466251a162
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