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2010-04-23qemu-img: Fix BRDV_O_FLAGS typoStefan Hajnoczi
It should be BDRV_O_FLAGS instead of BRDV_O_FLAGS. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23qemu-img: Eliminate bdrv_new_open() code duplicationStefan Hajnoczi
Several commands have code to create a BlockDriverState and open a file. The bdrv_new_open() function can be used to perform these steps. This patch converts the qemu-img commands to actually use bdrv_new_open(). Replaced the bdrv_new_open() 'readonly' argument with bdrv_open()-style flags to support generic flags like BDRV_O_NO_BACKING. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23block: Convert first_drv to QLISTStefan Hajnoczi
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23block.h: bdrv_create2 doesn't exist any moreKevin Wolf
The bdrv_create2 implementation has disappeared long ago. Remove its prototype from the header file, too. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23Remove un-needed codeBruce Rogers
The bdrv_set_geometry_hint call below is not needed - it's just setting what was just read. Signed-off-by: Bruce Rogers <brogers@novell.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23block: Convert bdrv_first to QTAILQStefan Hajnoczi
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23block: Do not export bdrv_firstStefan Hajnoczi
The bdrv_first linked list of BlockDriverStates is currently extern so that block migration can iterate the list. However, since there is already a bdrv_iterate() function there is no need to expose bdrv_first. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23cleanup block driver option handling in vl.cChristoph Hellwig
Assign directly to the bdrv_flags variable instead of using magic numbers before translating to the BDRV_O_* options. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23qcow2: Return 0/-errno in l2_allocateKevin Wolf
Returning NULL on error doesn't allow distinguishing between different errors. Change the interface to return an integer for -errno. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23qcow2: Return 0/-errno in write_l1_entryKevin Wolf
Change write_l1_entry to return the real error code instead of -1. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23qcow2: Fix error return code in qcow2_alloc_cluster_link_l2Kevin Wolf
Fix qcow2_alloc_cluster_link_l2 to return the real error code like it does in all other error cases. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23qcow2: Return 0/-errno in write_l2_entriesKevin Wolf
Change write_l2_entries to return the real error code instead of -1. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23block: split raw_getlengthChristoph Hellwig
Split up the raw_getlength into separate generic, solaris and BSD versions to reduce the ifdef maze a bit. The BSD variant still is a complete maze, but to clean it up properly we'd need some people using the BSD variants to figure out what code is used for what variant. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23block: get rid of the BDRV_O_FILE flagChristoph Hellwig
BDRV_O_FILE is only used to communicate between bdrv_file_open and bdrv_open. It affects two things: first bdrv_open only searches for protocols using find_protocol instead of all image formats and host drivers. We can easily move that to the caller and pass the found driver to bdrv_open. Second it is used to not force a read-write open of a snapshot file. But we never use bdrv_file_open to open snapshots and this behaviour doesn't make sense to start with. qemu-io abused the BDRV_O_FILE for it's growable option, switch it to using bdrv_file_open to make sure we only open files as growable were we can actually support that. This patch requires Kevin's "[PATCH] Replace calls of old bdrv_open" to be applied first. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23Replace calls of old bdrv_openKevin Wolf
What is known today as bdrv_open2 becomes the new bdrv_open. All remaining callers of the old function are converted to the new one. In some places they even know the right format, so they should have used bdrv_open2 from the beginning. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23qcow2: Fix creation of large imagesKevin Wolf
qcow_create2 assumes that the new image will only need one cluster for its refcount table initially. Obviously that's not true any more when the image is big enough (exact value depends on the cluster size). This patch calculates the refcount table size dynamically. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23qcow2: Trigger blkdebug eventsKevin Wolf
This adds blkdebug events to qcow2 to allow injecting I/O errors in specific places. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23blkdebug: Add events and rulesKevin Wolf
Block drivers can trigger a blkdebug event whenever they reach a place where it could be useful to inject an error for testing/debugging purposes. Rules are read from a blkdebug config file and describe which action is taken when an event is triggered. For now this is only injecting an error (with a few options) or changing the state (which is an integer). Rules can be declared to be active only in a specific state; this way later rules can distiguish on which path we came to trigger their event. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23Make qemu-config available for toolsKevin Wolf
To be able to use config files for blkdebug, we need to make these functions available in the tools. This involves moving two functions that can only be built in the context of the emulator. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23blkdebug: Inject errorsKevin Wolf
Add a mechanism to inject errors instead of passing requests on. With no further patches applied, you can use it by setting inject_errno in gdb. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23blkdebug: Basic request passthroughKevin Wolf
This isn't doing anything interesting. It creates the blkdebug block driver as a protocol which just passes everything through to raw. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23qemu-config: Make qemu_config_parse more genericKevin Wolf
qemu_config_parse gets the option groups as a parameter now instead of hardcoding the VM configuration groups. This way it can be used for other configurations, too. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-23qemu-config: qemu_read_config_file() reads the normal config fileKevin Wolf
Introduce a new function qemu_read_config_file which reads the VM configuration from a config file. Unlike qemu_config_parse it doesn't take a open file but a filename and reduces code duplication as a side effect. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-04-22audio/sdlaudio: remove unused variableSerge Ziryukin
Remove unused 'shift' variable spotted by clang. Also clean up aud_to_sdlfmt which used to get the value of shift. Signed-off-by: Serge Ziryukin <ftrvxmtrx@gmail.com> Signed-off-by: malc <av1474@comtv.ru>
2010-04-22bt-sdp: Fix an excessive ; and assignment of the wrong variableAndrzej Zaborowski
Problem-spotted-by: Blue Swirl <blauwirbel@gmail.com> Signed-off-by: Andrew Zaborowski <balrogg@gmail.com>
2010-04-22bt-l2cap: fix if statement with empty body, spotted by clangBlue Swirl
Fix clang error: CC bt-l2cap.o /src/qemu/hw/bt-l2cap.c:1000:41: error: if statement has empty body [-Wempty-body] /* TODO: Signal an error? */; This means that l2cap_sframe_in() may now get called. Signed-off-by: Blue Swirl <blauwirbel@gmail.com> Signed-off-by: Andrew Zaborowski <balrogg@gmail.com>
2010-04-21audio/alsa: Avoid snd_pcm_format_t vs audfmt_e mixupmalc
Spotted by Serge Ziryukin and based on his patch, thanks. Signed-off-by: malc <av1474@comtv.ru>
2010-04-20pci: fix pci_find_bus().Isaku Yamahata
When looking down child bus, it should look parent bridge's bus number, not child bus's. Optimized tail recursion and style fix. Cc: Blue Swirl <blauwirbel@gmail.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-04-20slirp: fix structure initialization in tcp_listen()Juha Riihimäki
A data structure of type sockaddr_in is allocated from stack but not properly initialized. This may lead to a failure in the bind() call later on. Fixed by filling the contents of the structure with zeroes before using it. Signed-off-by: Juha Riihimäki <juha.riihimaki@nokia.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-04-19Compile event_notifier only onceBlue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-04-19Compile vl.c onceBlue Swirl
Since kvm.h can be used in files compiled once, we can partially revert b33612d03540fda7fa67485f1c20395beb7a2bf0. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-04-19provide a stub version of kvm-all.c if !CONFIG_KVMPaolo Bonzini
This allows limited use of kvm functions (which will return ENOSYS) even in once-compiled modules. The patch also improves a bit the error messages for KVM initialization. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> [blauwirbel@gmail.com: fixed Win32 build] Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-04-19tcg/arm: don't try to load constants using pcAurelien Jarno
There is statistically almost 0 chances to use this code, so remove it. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: optimize register allocation orderAurelien Jarno
The beginning of the register allocation order list on the TCG arm target matches the list of clobbered registers. This means that when an helper is called, there is almost always clobbered registers that have to be spilled. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: fix argument alignment in qemu_st64Aurelien Jarno
64-bit arguments should be aligned on an even register as specified by the "Procedure Call Standard for the ARM Architecture". Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: remove useless register tests in qemu_ld/stAurelien Jarno
addr_reg, data_reg and data_reg2 can't be register r0 or r1 du to the constraints. Don't check if they equals these registers. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: bswap arguments in qemu_ld/st if neededAurelien Jarno
On big endian targets, data arguments of qemu_ld/st ops have to be byte swapped. Two temporary registers are needed for qemu_st to do the bswap. r0 and r1 are used in system mode, do the same in user mode, which implies reworking the constraints. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: use ext* ops in qemu_ldAurelien Jarno
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: remove conditional argument for qemu_ld/stAurelien Jarno
While it make sense to pass a conditional argument to tcg_out_*() functions as the ARM architecture allows that, it doesn't make sense for qemu_ld/st functions. These functions use comparison instructions and conditional execution already, so it is not possible to use a second level of conditional execution. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: add bswap opsAurelien Jarno
Add an bswap16 and bswap32 ops, either using the rev and rev16 instructions on ARMv6+ or shifts and logical operations on previous ARM versions. In both cases the result use less instructions than the pure TCG version. These ops are also needed by the qemu_ld/st functions. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: add ext16u opAurelien Jarno
Add an ext16u op, either using the uxth instruction on ARMv6+ or two shifts on previous ARM versions. In both cases the result use the same number or less instructions than the pure TCG version. Also move all sign extension code to separate functions, so that they can be reused in other parts of the code. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: add rotation opsAurelien Jarno
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: use the blx instruction when possibleAurelien Jarno
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: sxtb and sxth are available starting with ARMv6Aurelien Jarno
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: add variables to define the allowed instructions setAurelien Jarno
Use a set of variables to define the allowed ARM instructions, depending on the __ARM_ARCH_*__ GCC defines. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: align 64-bit arguments in function callsAurelien Jarno
As specified by the "Procedure Call Standard for the ARM Architecture". Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: replace integer values by registers enumAurelien Jarno
The TCG ARM backends uses integer values to refer to both immediate values and register number. This makes the code difficult to read. The patch below replaces all (if I haven't miss any ;-) integer values representing register number by TCG_REG_* enum values. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: remove store signed functionsAurelien Jarno
Store signed functions doesn't make sense, and are not used. Remove them. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: explicitely list clobbered/reserved regsAurelien Jarno
Instead of writing very compact code, declare all registers that are clobbered or reserved one by one. This makes the code easier to read. Also declare all the 16 registers to TCG, and mark pc as reserved. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: remove SAVE_LR codeAurelien Jarno
There is no need to save the LR register (r14) before a call to a subroutine. According to the "Procedure Call Standard for the ARM Architecture", it is the job of the callee to save this register. Moreover, this register is already saved in the prologue/epilogue. This patch removes the disabled SAVE_LR code, as there is no need to reenable later. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
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