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2013-01-03dataplane: use linux-headers/ for virtio includesStefan Hajnoczi2-4/+3
The hw/dataplane/vring.c code includes linux/virtio_ring.h. Ensure that we use linux-headers/ instead of the system-wide headers, which may be out-of-date on older distros. This resolves the following build error on Debian 6: CC hw/dataplane/vring.o cc1: warnings being treated as errors hw/dataplane/vring.c: In function 'vring_enable_notification': hw/dataplane/vring.c:71: error: implicit declaration of function 'vring_avail_event' hw/dataplane/vring.c:71: error: nested extern declaration of 'vring_avail_event' hw/dataplane/vring.c:71: error: lvalue required as left operand of assignment Note that we now build dataplane/ for each target instead of only once. There is no way around this since linux-headers/ is only available for per-target objects - and it's how virtio, vfio, kvm, and friends are built. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-01-02configure: Write new file "config-all-disas.mak" when running configureStefan Weil1-0/+2
Incremental builds added new lines to that file each time when configure was run. Now a new file with a comment line is written. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-01-02tci: Fix broken builds with TCG interpreterStefan Weil2-3/+4
TCI no longer compiled after commit 76cad71136b7eb371cf2a2a4e1621cfe8d9c769a. The TCI disassembler depends on data structures which are different for each QEMU target, so it cannot be compiled as a universal-obj today. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-01-02savevm.c: cleanup system includesMichael Tokarev1-39/+1
savevm.c suffers from the same problem as some other files. Some years ago savevm.c was created from vl.c, moving some code from there into a separate file. At that time, all includes were just copied from vl.c to savevm.c, without checking which ones are needed and which are not. But actually most of that stuff is _not_ needed. More, some stuff is wrong, for example, *BSD #ifdef'ery around <util.h> vs <libutil.h> - for one, it fails to build on Debian/kFreebsd. Just remove all this. Maybe there's a possibility to clean it up further - like removing <windows.h> (and maybe including winsock.h for htons etc), and maybe it's possible to remove some internal #includes too, but I didn't check this. While at it, remove duplicate #include of qemu/timer.h. Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-01-02disallow -daemonize usage of stdio (curses display, -nographic, -serial ↵Michael Tokarev2-3/+29
stdio etc) Curses display requires stdin/out to stay on the terminal, so -daemonize makes no sense in this case. Instead of leaving display uninitialized like is done since 995ee2bf469de6bb, explicitly detect this case earlier and error out. -nographic can actually be used with -daemonize, by redirecting everything to a null device, but the problem is that according to documentation and historical behavour, -nographic redirects guest ports to stdin/out, which, again, makes no sense in case of -daemonize. Since -nographic is a legacy option, don't bother fixing this case (to allow -nographic and -daemonize by redirecting guest ports to null instead of stdin/out in this case), but disallow it completely instead, to stop garbling host terminal. If no display display needed and user wants to use -nographic, the right way to go is to use -serial null -parallel null -monitor none -display none -vga none instead of -nographic. Also prevent the same issue -- it was possible to get garbled host tty after -nographic -daemonize and it is still possible to have it by using -serial stdio -daemonize Fix this by disallowing opening stdio chardev when -daemonize is specified. Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-01-02Merge remote-tracking branch 'stefanha/block' into stagingAnthony Liguori27-29/+1863
* stefanha/block: sheepdog: pass oid directly to send_pending_req() sheepdog: don't update inode when create_and_write fails block/raw-win32: Fix compiler warnings (wrong format specifiers) qemu-img: report size overflow error message cutils: change strtosz_suffix_unit function virtio-blk: Return UNSUPP for unknown request types virtio-blk: add x-data-plane=on|off performance feature dataplane: add virtio-blk data plane code virtio-blk: restore VirtIOBlkConf->config_wce flag iov: add qemu_iovec_concat_iov() test-iov: add iov_discard_front/back() testcases iov: add iov_discard_front/back() to remove data dataplane: add Linux AIO request queue dataplane: add event loop dataplane: add virtqueue vring code dataplane: add host memory mapping code configure: add CONFIG_VIRTIO_BLK_DATA_PLANE raw-posix: add raw_get_aio_fd() for virtio-blk-data-plane Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-01-02tcg: Remove unneeded assertionStefan Weil1-1/+0
Commit 7f6f0ae5b95adfa76e10eabe2c34424a955fd10c added two assertions. One of these assertions is not needed: The pointer ts is never NULL because it is initialized with the address of an array element. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-01-02sheepdog: pass oid directly to send_pending_req()Liu Yuan1-1/+1
Cc: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Cc: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Liu Yuan <tailai.ly@taobao.com> Reviewed-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-02sheepdog: don't update inode when create_and_write failsLiu Yuan1-4/+5
For the error case such as SD_RES_NO_SPACE, we shouldn't update the inode bitmap to avoid the scenario that the object is allocated but wasn't created at the server side. This will result in VM's IO error on the failed object. Cc: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Cc: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Liu Yuan <tailai.ly@taobao.com> Reviewed-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-02block/raw-win32: Fix compiler warnings (wrong format specifiers)Stefan Weil1-2/+2
Commit fbcad04d6bfdff937536eb23088a01a280a1a3af added fprintf statements with wrong format specifiers. GetLastError() returns a DWORD which is unsigned long, so %lu must be used. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-02qemu-img: report size overflow error messageliguang1-3/+7
qemu-img will complain when qcow or qcow2 size overflow for 64 bits, report the right message in this condition. $./qemu-img create -f qcow2 /tmp/foo 0x10000000000000000 before change: qemu-img: Invalid image size specified! You may use k, M, G or T suffixes for qemu-img: kilobytes, megabytes, gigabytes and terabytes. after change: qemu-img: Image size must be less than 8 EiB! [Resolved conflict with a9300911 goto removal -- Stefan] Signed-off-by: liguang <lig.fnst@cn.fujitsu.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-02cutils: change strtosz_suffix_unit functionliguang1-2/+4
if value to be translated is larger than INT64_MAX, this function will not be convenient for caller to be aware of it, so change a little for this. Signed-off-by: liguang <lig.fnst@cn.fujitsu.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-02virtio-blk: Return UNSUPP for unknown request typesAlexey Zaytsev1-1/+5
Currently, all unknown requests are treated as VIRTIO_BLK_T_IN Signed-off-by: Alexey Zaytsev <alexey.zaytsev@gmail.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-02virtio-blk: add x-data-plane=on|off performance featureStefan Hajnoczi2-1/+46
The virtio-blk-data-plane feature is easy to integrate into hw/virtio-blk.c. The data plane can be started and stopped similar to vhost-net. Users can take advantage of the virtio-blk-data-plane feature using the new -device virtio-blk-pci,x-data-plane=on property. The x-data-plane name was chosen because at this stage the feature is experimental and likely to see changes in the future. If the VM configuration does not support virtio-blk-data-plane an error message is printed. Although we could fall back to regular virtio-blk, I prefer the explicit approach since it prompts the user to fix their configuration if they want the performance benefit of virtio-blk-data-plane. Limitations: * Only format=raw is supported * Live migration is not supported * Block jobs, hot unplug, and other operations fail with -EBUSY * I/O throttling limits are ignored * Only Linux hosts are supported due to Linux AIO usage Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-02dataplane: add virtio-blk data plane codeStefan Hajnoczi5-1/+502
virtio-blk-data-plane is a subset implementation of virtio-blk. It only handles read, write, and flush requests. It does this using a dedicated thread that executes an epoll(2)-based event loop and processes I/O using Linux AIO. This approach performs very well but can be used for raw image files only. The number of IOPS achieved has been reported to be several times higher than the existing virtio-blk implementation. Eventually it should be possible to unify virtio-blk-data-plane with the main body of QEMU code once the block layer and hardware emulation is able to run outside the global mutex. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-02virtio-blk: restore VirtIOBlkConf->config_wce flagStefan Hajnoczi3-2/+6
Two slightly different versions of a patch to conditionally set VIRTIO_BLK_F_CONFIG_WCE through the "config-wce" qdev property have been applied (ea776abca and eec7f96c2). David Gibson <david@gibson.dropbear.id.au> noticed that the "config-wce" property is broken as a result and fixed it recently. The fix sets the host_features VIRTIO_BLK_F_CONFIG_WCE bit from a qdev property. Unfortunately, the virtio device then has no chance to test for the presence of the feature bit during virtio_blk_init(). Therefore, reinstate the VirtIOBlkConf->config_wce flag. Drop the duplicate qdev property to set the host_features bit. The VirtIOBlkConf->config_wce flag will be used by virtio-blk-data-plane in a later patch. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-02iov: add qemu_iovec_concat_iov()Stefan Hajnoczi2-12/+30
The qemu_iovec_concat() function copies a subset of a QEMUIOVector. The new qemu_iovec_concat_iov() function does the same for a iov/cnt pair. It is easy to define qemu_iovec_concat() in terms of qemu_iovec_concat_iov(). The existing code is mostly unchanged, except for the assertion src->size >= soffset, which cannot be efficiently checked upfront on a iov/cnt pair. Instead we assert upon hitting the end of src with an unsatisfied soffset. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-02test-iov: add iov_discard_front/back() testcasesStefan Hajnoczi1-0/+150
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-02iov: add iov_discard_front/back() to remove dataStefan Hajnoczi2-0/+64
The iov_discard_front/back() functions remove data from the front or back of the vector. This is useful when peeling off header/footer structs. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-02dataplane: add Linux AIO request queueStefan Hajnoczi3-1/+175
The IOQueue has a pool of iocb structs and a function to add new read/write requests. Multiple requests can be added before calling the submit function to actually tell the host kernel to begin I/O. This allows callers to batch requests and submit them in one go. The actual I/O is performed using Linux AIO. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-02dataplane: add event loopStefan Hajnoczi3-1/+141
Outside the safety of the global mutex we need to poll on file descriptors. I found epoll(2) is a convenient way to do that, although other options could replace this module in the future (such as an AioContext-based loop or glib's GMainLoop). One important feature of this small event loop implementation is that the loop can be terminated in a thread-safe way. This allows QEMU to stop the data plane thread cleanly. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-02dataplane: add virtqueue vring codeStefan Hajnoczi4-1/+428
The virtio-blk-data-plane cannot access memory using the usual QEMU functions since it executes outside the global mutex and the memory APIs are this time are not thread-safe. This patch introduces a virtqueue module based on the kernel's vhost vring code. The trick is that we map guest memory ahead of time and access it cheaply outside the global mutex. Once the hardware emulation code can execute outside the global mutex it will be possible to drop this code. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-02dataplane: add host memory mapping codeStefan Hajnoczi4-1/+237
The data plane thread needs to map guest physical addresses to host pointers. Normally this is done with cpu_physical_memory_map() but the function assumes the global mutex is held. The data plane thread does not touch the global mutex and therefore needs a thread-safe memory mapping mechanism. Hostmem registers a MemoryListener similar to how vhost collects and pushes memory region information into the kernel. There is a fine-grained lock on the regions list which is held during lookup and when installing a new regions list. When the physical memory map changes the MemoryListener callbacks are invoked. They build up a new list of memory regions which is finally installed when the list has been completed. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-02configure: add CONFIG_VIRTIO_BLK_DATA_PLANEStefan Hajnoczi1-0/+21
The virtio-blk-data-plane feature only works with Linux AIO. Therefore add a ./configure option and necessary checks to implement this dependency. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-02raw-posix: add raw_get_aio_fd() for virtio-blk-data-planeStefan Hajnoczi2-0/+43
The raw_get_aio_fd() function allows virtio-blk-data-plane to get the file descriptor of a raw image file with Linux AIO enabled. This interface is really a layering violation that can be resolved once the block layer is able to run outside the global mutex - at that point virtio-blk-data-plane will switch from custom Linux AIO code to using the block layer. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-02Merge remote-tracking branch 'qemu-kvm/uq/master' into stagingAnthony Liguori4-4/+47
* qemu-kvm/uq/master: qemu-kvm/pci-assign: 64 bits bar emulation target-i386: Enabling IA32_TSC_ADJUST for QEMU KVM guest VMs Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-01-02Merge remote-tracking branch 'mst/tags/for_anthony' into stagingAnthony Liguori9-61/+136
pci,virtio This optimizes MSIX handling in virtio-pci. Also included is pci express capability bugfix. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> * mst/tags/for_anthony: virtio-pci: don't poll masked vectors msix: expose access to masked/pending state msi: add API to get notified about pending bit poll pcie: Fix bug in pcie_ext_cap_set_next virtio: make bindings typesafe
2013-01-02Merge remote-tracking branch 'kraxel/seabios-a810e4e' into stagingAnthony Liguori4-0/+0
* kraxel/seabios-a810e4e: Update seabios to a810e4e72a0d42c7bc04eda57382f8e019add901 Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-01-01pflash_cfi01: Suppress warning when Linux probes for AMD flashStefan Weil1-0/+3
There are several ARM and MIPS boards which are manufactured with either Intel (pflash_cfi01.c) or AMD (pflash_cfi02.c) flash memory. The Linux kernel supports both and first probes for AMD flash which resulted in one or two warnings from the Intel flash emulation: pflash_write: Unimplemented flash cmd sequence (offset 0000000000000000, wcycle 0x0 cmd 0x0 value 0xf000f0) pflash_write: Unimplemented flash cmd sequence (offset 0000000000000000, wcycle 0x0 cmd 0x0 value 0xf0) These warnings confuse users, so suppress them. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-01-01target-mips: Use EXCP_SC rather than a magic number陳韋任 (Wei-Ren Chen)1-3/+2
From the discussion on the ML [1], the exception limit defined by magic number 0x100 is actually EXCP_SC defined in cpu.h. Replace the magic number with EXCP_SC. Remove "#if 1 .. #endif" as well. [1] http://lists.gnu.org/archive/html/qemu-devel/2012-11/msg03080.html Signed-off-by: Chen Wei-Ren <chenwj@iis.sinica.edu.tw> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-01-01target-mips: Make repl_ph to sign extend to target-longJovanovic, Petar1-1/+2
The immediate value is 9bits, should sign-extend to 16bits. The return value to register should sign-extend to target_long, as Richard says, removing an unnecessary cast works fun. Signed-off-by: Dongxue Zhang <elta.era@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-01-01Fix my email addressDongxue Zhang1-1/+1
Fix my email address, last time it's wrong. Signed-off-by: Dongxue Zhang <elta.era@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-01-01target-mips: Remove semicolon from macro definitionStefan Weil1-1/+1
Macro RESTORE_FLUSH_MODE is similar to RESTORE_ROUNDING_MODE but included a semicolon. The code which uses that macro also includes a semicolon, so the result was an empty statement. Remove the superfluous semicolon from the macro definition. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-01-01target-mips: Fix for helpers for EXTR_* instructionsPetar Jovanovic9-35/+195
The change removes some unnecessary and incorrect code for EXTR_S.H. Further, it corrects the mask for shift value in the EXTR_ instructions. It also extends the existing tests so they trigger the issues corrected with the change. Signed-off-by: Petar Jovanovic <petarj@mips.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-01-01target-mips: Fix incorrect reads and writes to DSPControl registerPetar Jovanovic3-40/+32
Upper 4 bits of ccond (bits 31..28 ) of DSPControl register are not used in the MIPS32 architecture. They are used in the MIPS64 architecture. For MIPS32 these bits must be written as zero, and return zero on read. The change fixes writes (WRDSP) and reads (RDDSP) to the register. It also fixes the tests that use these instructions, and makes them smaller and simpler. Signed-off-by: Petar Jovanovic <petarj@mips.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-12-29Fix semaphores fallback codeBrad Smith1-0/+1
As reported in bug 1087114 the semaphores fallback code is broken which results in QEMU crashing and making QEMU unusable. This patch is from Paolo. This needs to be back ported to the 1.3 stable tree as well. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Brad Smith <brad@comstyle.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-29tcg-hppa: Fix typo in brcond2Richard Henderson1-1/+1
Reported-by: Stuart Brady <sdb@zubnet.me.uk> Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-29tcg-i386: Perform cmov detection at runtime for 32-bit.Richard Henderson3-6/+49
Existing compile-time detection is spotty at best. Convert it all to runtime detection instead. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-29tcg: Add TCGV_IS_UNUSED_*Richard Henderson2-0/+5
Cc: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net> Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-28Disable semaphores fallback code for OpenBSDBrad Smith2-6/+6
Disable the semaphores fallback code for OpenBSD as modern OpenBSD releases now have sem_timedwait(). Signed-off-by: Brad Smith <brad@comstyle.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-28usb/redirect.c: unbreak compilation due to include/char/char.hAlon Levy1-0/+1
Broken since: commit 927d4878b0ff319ed87fed9363f314613b0a5ed9 Author: Paolo Bonzini <pbonzini@redhat.com> Date: Mon Dec 17 18:20:05 2012 +0100 softmmu: move remaining include files to include/ subdirectories Signed-off-by: Alon Levy <alevy@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-28Merge branch 'qom-cpu' of git://repo.or.cz/qemu/afaerberBlue Swirl42-867/+1224
* 'qom-cpu' of git://repo.or.cz/qemu/afaerber: MAINTAINERS: Include X86CPU in CPU maintenance area cpu: Move kvm_run into CPUState cpu: Move kvm_state field into CPUState ppc_booke: Pass PowerPCCPU to ppc_booke_timers_init() ppc4xx_devs: Return PowerPCCPU from ppc4xx_init() ppc_booke: Pass PowerPCCPU to {decr,fit,wdt} timer callbacks ppc: Pass PowerPCCPU to [h]decr timer callbacks ppc: Pass PowerPCCPU to [h]decr callbacks ppc: Pass PowerPCCPU to ppc_set_irq() kvm: Pass CPUState to kvm_vcpu_ioctl() kvm: Pass CPUState to kvm_arch_* cpu: Move kvm_fd into CPUState qdev-properties.c: Separate core from the code used only by qemu-system-* qdev: Coding style fixes cpu: Introduce CPUListState struct target-alpha: Add support for -cpu ? target-alpha: Turn CPU definitions into subclasses target-alpha: Avoid leaking the alarm timer over reset alpha: Pass AlphaCPU array to Typhoon target-alpha: Let cpu_alpha_init() return AlphaCPU
2012-12-26virtio-pci: don't poll masked vectorsMichael S. Tsirkin1-12/+40
At the moment, when irqfd is in use but a vector is masked, qemu will poll it and handle vector masks in userspace. Since almost no one ever looks at the pending bits, it is better to defer this until pending bits are actually read. Implement this optimization using the new poll notifier. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2012-12-26msix: expose access to masked/pending stateMichael S. Tsirkin2-3/+6
For use by poll handler. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2012-12-26msi: add API to get notified about pending bit pollMichael S. Tsirkin5-4/+21
Update all users. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2012-12-26pcie: Fix bug in pcie_ext_cap_set_nextKnut Omang1-1/+1
Upper 16 bits of the PCIe Extended Capability Header was truncated during update, also breaking pcie_add_capability. Signed-off-by: Knut Omang <knut.omang@oracle.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2012-12-25qemu-kvm/pci-assign: 64 bits bar emulationXudong Hao1-4/+10
Enable 64 bits bar emulation. Test pass with the current seabios which already support 64bit pci bars. Signed-off-by: Xudong Hao <xudong.hao@intel.com> Reviewed-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com>
2012-12-23MAINTAINERS: Take over kvm maintenanceGleb Natapov1-2/+2
Replace Avi with myself as kvm maintainer. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-12-23configure: allow disabling pixman if not neededRobert Schiele2-2/+18
When we build neither any system emulation targets nor the tools there is actually no need for pixman library. In that case do not enforce presence of that library on the system. Reviewed-by: Andreas F=E4rber <afaerber@suse.de> Signed-off-by: Robert Schiele <rschiele@gmail.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-12-23tmp105: Create API for TMP105 temperature sensor.Alex Horn3-11/+76
* Define enum for TMP105 registers * Move tmp105_set() from I2C to TMP105 header * Document units and range of temperature as preconditions Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Alex Horn <alex.horn@cs.ox.ac.uk> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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