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Now that we have a separate aio pool structure we can remove those aio pool details from BlockDriver. Every driver supporting AIO now needs to declare a static AIOPool with the aiocb size and the cancellation method. This cleans up the current code considerably and will make it cleaner and more obvious to support two different aio implementations behind a single BlockDriver. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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[this one is required for [PATCH] fully split aio_pool from BlockDriver, sorry for not sending it out earlier] Add a qcow_aio_setup helper to qcow to shared common code between the aio_readv and aio_writev methods. Based on the function with the same name in qcow2. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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We do need hdev_create unconditionally on all platforms so that qemu-img create support for host device works on all platforms. Also relax the check to allow character devices in addition to block devices. On many Unix platforms block devices have buffered block nodes and unbuffered character device nodes, and on FreeBSD the block nodes don't even exist anymore. Also on Linux we do support the /dev/sgN scsi passthrough devices through the host device driver, and probably the old-style /dev/raw/rawN raw devices although I haven't tested that. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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raw_pread_aligned currently returns the raw return value from lseek/read, which is always -1 in case of an error. But the callers higher up the stack expect it to return the negated errno just like raw_pwrite_aligned. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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Pointer vs addresses a VncDisplay structure, so it is sufficient to allocate sizeof(VncDisplay) or sizeof(*vs) bytes instead of the much larger sizeof(VncState). Maybe the misleading name should be fixed, too: the code contains many places where vs is used, sometimes it is a VncState *, sometimes it is a VncDisplay *. vd would be a better name. Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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This patch converts the remaining users of bdrv_create2 to bdrv_create and removes the now unused function. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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Don't write each single changed refcount block entry to the disk after it is written, but update all entries of the block and write all of them at once. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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This is a preparation patch with no functional changes. It moves the allocation of new refcounts block to a new function and makes update_cluster_refcount (for one cluster) call update_refcount (for multiple clusters) instead the other way round. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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There is only one (internal) user left and it can be switched to the normal emulation provided in block.c Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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When a reset is requested, the current e1000 emulation never clears the reset bit which may cause a driver to hang. This patch masks the reset bit out when setting the control registert, so the reset is immediately completed. Signed-off-by: Kevin Wolf <mail@kevin-wolf.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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Commit ffad4116 removed the "scratch buffer" from check_params, but didn't care for the error messages which actually included this string to tell the user which option was wrong. Now this string is uninitialized, so this patch removes it from the message. This means that the user is only told the whole parameter string and has to pick the wrong option by himself as the callers of check_params can't know this value any more. An alternative approach would be to revert that commit and do whatever is needed to fix the original problem without changing check_params. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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If libfdt is not available, disable the fdt manipulation features. Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
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Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
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Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
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Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
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Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
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Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
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This setup was designed by petalogix and is supported by upstream linux. The design targets a xilinx spartan-3a-1800 dsp board with MMU. Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
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Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
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Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
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Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
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Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
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Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
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Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
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Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
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Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
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Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
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Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
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Signed-off-by: Paul Brook <paul@codesourcery.com>
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We have both IRQ sinks and GPIO inputs. These are in principle exactly the same thing, so remove the former. Signed-off-by: Paul Brook <paul@codesourcery.com>
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Add a dummy command to the all: rule in sub-makefiles. This avoids "Nothing to be done for `all'." messages from make. Signed-off-by: Paul Brook <paul@codesourcery.com>
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Signed-off-by: Paul Brook <paul@codesourcery.com>
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"struct timeval last" caused a compilation error with mingw32 (missing header for struct timeval). It is unused, so it was possible to remove it. Acked-by: Edgar E. Iglesias <edgar.iglesias@gmail.com> Signed-off-by: Stefan Weil <weil@mail.berlios.de>
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Implement and use a common device bus state. The main side-effect is that creating a bus and attaching it to a parent device are no longer separate operations. For legacy code we allow a NULL parent, but that should go away eventually. Also tweak creation code to veriry theat a device in on the right bus. Signed-off-by: Paul Brook <paul@codesourcery.com>
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Signed-off-by: Paul Brook <paul@codesourcery.com>
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Signed-off-by: Paul Brook <paul@codesourcery.com>
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Bit 0 is the enable bit, which we not only don't want to set, but it will stick and make us think it's an I/O port resource. Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
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Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
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Currently Qemu can read from posix I/O and NBD. This patch adds a third protocol to the game: HTTP. In certain situations it can be useful to access HTTP data directly, for example if you want to try out an http provided OS image, but don't know if you want to download it yet. Using this patch you can now try it on on the fly. Just use it like: qemu -cdrom http://host/path/my.iso Signed-off-by: Alexander Graf <agraf@suse.de>