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2011-06-15Merge remote-tracking branch 'kwolf/for-anthony' into stagingAnthony Liguori16-73/+423
2011-06-15Allow nested qemu_bh_poll() after BH deletionKevin Wolf1-2/+3
Without this, qemu segfaults when a BH handler first deletes its BH and then calls another function which involves a nested qemu_bh_poll() call. This can be reproduced by generating an I/O error (e.g. with blkdebug) on an IDE device and using rerror/werror=stop to stop the VM. When continuing the VM, qemu segfaults. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-06-15ide: Clear error_status after restarting flushKevin Wolf1-7/+11
Clearing the error status flag was missing for restarting flushes. Now that the error status is separate from the BM status register, we can simply set it to 0 after restarting the request. This ensures that we never forget to clear a bit. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-15ide: add TRIM supportChristoph Hellwig5-5/+124
Add support for TRIM sub function of the data set management command, and wire it up to the qemu discard infrastructure. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-15ide: allow other dma comands than read and writeChristoph Hellwig4-17/+33
Replace the is_read flag with a dma_cmd flag to allow the dma and restart logic to handler other commands like TRIM. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-15make dma_bdrv_io available to driversChristoph Hellwig2-13/+18
Make dma_bdrv_io available for drivers, and pass an explicit I/O function instead of hardcoding bdrv_aio_readv/bdrv_aio_writev. This is required to implement non-READ/WRITE dma commands in the ide driver, e.g. the upcoming TRIM support. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-15ide: Add forgotten VMSTATE_END_OF_LIST in subsectionKevin Wolf1-0/+1
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-15ide: Fix ide_drive_pio_state_needed()Kevin Wolf1-1/+2
When a failed PIO request caused the VM to stop, we still need to transfer the PIO state even though DRQ=0 at this point. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-15ide: Split error status from status registerKevin Wolf4-8/+105
When adding the werror=stop mode, some flags were added to s->status which are used to determine what kind of operation should be restarted when the VM is continued. Unfortunately, it turns out that s->status is in fact a device register and as such is visible to the guest (some of the abused bits are even writable for the guest). For migration we keep on using the old VMState field (renamed to migration_compat_status) if the status register doesn't use any of the previously abused bits. If it does, we use a subsection with a clean copy of the status register. The error status is always sent in a subsection if there is any error. It can't use the old field because errors happen even without PCI. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-15qcow2: Fix in-flight list after qcow2_cache_put failureKevin Wolf1-4/+8
If qcow2_cache_put returns an error during cluster allocation and the allocation fails, it must be removed from the list of in-flight allocations. Otherwise we'd get a loop in the list when the ACB is used for the next allocation. Luckily, this qcow2_cache_put shouldn't fail anyway because the L2 table is only read, so that qcow2_cache_put doesn't even involve I/O. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2011-06-15Replaced tabs with spaces in block.h and block_int.hDevin Nakamura2-5/+5
Signed-off-by: Devin Nakamura <devin122@gmail.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-15vdi: Avoid direct AIO callbackKevin Wolf1-5/+36
bdrv_aio_* must not call the callback before returning to its caller. In vdi, this could happen in some error cases. This starts the real requests processing in a BH to avoid this situation. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-14qcow: Avoid direct AIO callbackKevin Wolf1-2/+56
bdrv_aio_* must not call the callback before returning to its caller. In qcow, this could happen in some error cases. This starts the real requests processing in a BH to avoid this situation. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-14qcow2: Avoid direct AIO callbackKevin Wolf1-9/+30
bdrv_aio_* must not call the callback before returning to its caller. In qcow2, this could happen in some error cases. This starts the real requests processing in a BH to avoid this situation. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-14kvm: Enable CPU SMEP featureYang, Wei Y1-0/+13
This patchset enables a new CPU feature SMEP (Supervisor Mode Execution Protection) in QEMU-KVM. SMEP prevents kernel from executing code in application. Updated Intel SDM describes this CPU feature. The document will be published soon. SMEP is identified by CPUID leaf 7 EBX[7], which is 0 before. Get the right value by query KVM kernel module, so that guest can get SMEP through CPUID. Signed-off-by: Yang, Wei <wei.y.yang@intel.com> Singed-off-by: Shan, Haitao <haitao.shan@intel.com> Singed-off-by: Li, Xin <xin.li@intel.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-06-14kvm: Add CPUID support for VIA CPUbrillywu@viatech.com.cn3-3/+74
When KVM is running on VIA CPU with host cpu's model, the feautures of VIA CPU will be passed into kvm guest by calling the CPUID instruction for Centaur. Signed-off-by: BrillyWu<brillywu@viatech.com.cn> Signed-off-by: KaryJin<karyjin@viatech.com.cn> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-06-14usb-ccid: Plug memory leak on qdev exit()Markus Armbruster1-20/+8
ccid_initfn() allocates CCIDBus dynamically, but there is no exit callback to free it. Fix by getting rid of the allocation. Signed-off-by: Markus Armbruster <armbru@redhat.com>
2011-06-14libcacard: add libcacard.la targetAlon Levy5-6/+74
No flag to configure is required. Instead, added a libcacard.la target that is not built by default, only when requested explicitly via: mkdir build cd build ../configure make libcacard.la make install-libcacard Uses libtool to do actual linking of object files and shared library, and installing. Tested only under linux, but supposed to work on other systems as well. If libtool isn't found you get a message complaining about that, only at build time (since it is not a default target I did not add a message at configure time). New build artifacts: .libs subdirectories (at <buildroot> and <buildroot>/libcacard) *.lo files (at same locations as the respective o files) Added %.lo : %.c rule that uses libtool. Updated clean rule to clean up those artifacts. Added specific rule to call dtrace with libtool wrapper (note that because of a current upstream dtrace bug fixed by systemtap b1568fd85 commit the -fPIC flag isn't actually passed on. still current dtrace+libtool produced object links fine). If libtool is missing any of the following targets will complain and exit 1: any subdir: *.lo root and libcacard: libcacard.la, libcacard-instsall Tested to link and load with all tracing backends.
2011-06-14configure: add libdir and --libdirAlon Levy1-0/+5
2011-06-14block/rbd: Remove unused local variableStefan Weil1-4/+0
Variable 'snap' is assigned a value that is never used. Remove snap and the related code. Cc: Christian Brunner <chb@muc.de> Cc: Josh Durgin <josh.durgin@dreamhost.com> Cc: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Weil <weil@mail.berlios.de> Reviewed-by: Josh Durgin <josh.durgin@dreamhost.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-13configure: Detect and don't try to use older libcurlPeter Maydell1-1/+1
Older versions of libcurl don't have some of the features we try to use, in particular curl_multi_setopt(). Check for this in the 'is libcurl available?' configure test so we disable curl support if the library is too old. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2011-06-13Changelog: Add explanatory note that this file is no longer updatedPeter Maydell1-0/+6
Add an explanatory note to the top of Changelog pointing at the wiki and git history for changelogs for more recent releases. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2011-06-10doc: Minor typo fix.Brad Hards1-2/+2
Thanks to agraf_, stefanha and Snader_LB for their IRC assistance. Thanks to Markus Armbruster and Alexander Graf (again) for their assistance with the second version of this patch. No patch is too simple to test... Signed-off-by: Brad Hards <bradh@frogmouth.net> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2011-06-10sigfd: use pthread_sigmaskAlexander Graf1-1/+1
Qemu uses signalfd to figure out, if a signal occured without the need to actually receive the signal. Instead, it can read from the fd to receive its news. Now, we obviously don't always have signalfd around. Especially not on non-Linux systems. So what we do there is that we create a new thread, block that thread on all signals and simply call sigwait to wait for a signal we're interested in to occur. This all sounds great, but what we're really doing is: sigset_t all; sigfillset(&all); sigprocmask(SIG_BLOCK, &all, NULL); which - on Darwin - blocks all signals on the current _process_, not only on the current thread. To block signals on the thread, we can use pthread_sigmask(). This patch does that, assuming that my above analysis is correct, and thus renders Qemu useable on Darwin again. Reported-by: Andreas Färber <andreas.faerber@web.de> Acked-by: Paolo Bonizni <pbonzini@redhat.com> CC: Jan Kiszka <jan.kiszka@siemens.com> CC: Anthony Liguori <anthony@codemonkey.ws> Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2011-06-10Merge remote branch 'rth/axp-next' into alpha-mergeEdgar E. Iglesias19-2169/+1179
* rth/axp-next: (26 commits) target-alpha: Implement TLB flush primitives. target-alpha: Use a fixed frequency for the RPCC in system mode. target-alpha: Trap for unassigned and unaligned addresses. target-alpha: Remap PIO space for 43-bit KSEG for EV6. target-alpha: Implement cpu_alpha_handle_mmu_fault for system mode. target-alpha: Implement more CALL_PAL values inline. target-alpha: Disable interrupts properly. target-alpha: All ISA checks to use TB->FLAGS. target-alpha: Swap shadow registers moving to/from PALmode. target-alpha: Implement do_interrupt for system mode. target-alpha: Add IPRs to be used by the emulation PALcode. target-alpha: Use kernel mmu_idx for pal_mode. target-alpha: Add various symbolic constants. target-alpha: Use do_restore_state for arithmetic exceptions. target-alpha: Tidy up arithmetic exceptions. target-alpha: Tidy exception constants. target-alpha: Enable the alpha-softmmu target. target-alpha: Rationalize internal processor registers. target-alpha: Merge HW_REI and HW_RET implementations. target-alpha: Cleanup MMU modes. ...
2011-06-10fsdev: Fix archs that dont use fsdevEdgar E. Iglesias1-0/+8
Fix provided by: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2011-06-08Merge remote-tracking branch 'qmp/for-anthony' into stagingAnthony Liguori6-25/+91
2011-06-08Merge remote-tracking branch 'jvrao/for-anthony' into stagingAnthony Liguori15-290/+388
2011-06-08Merge remote-tracking branch 'spice/spice.v37' into stagingAnthony Liguori7-19/+53
Conflicts: vl.c
2011-06-08Merge remote-tracking branch 'stefanha/trivial-patches' into stagingAnthony Liguori25-52/+24
2011-06-08qemu-img create: Fix displayed default cluster sizeKevin Wolf4-5/+11
When not specifying a cluster size on the command line, qemu-img printed a cluster size of 0: Formatting '/tmp/test.qcow2', fmt=qcow2 size=67108864 encryption=off cluster_size=0 This patch adds the default cluster size to the QEMUOptionParameter list, so that it displays the default value that is used. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-08bdrv_img_create: Fix segfaultKevin Wolf1-2/+3
Block drivers that don't support creating images don't have a size option. Fail gracefully instead of segfaulting when trying to access the option's value. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-08qcow2: Fix memory leaks in error casesKevin Wolf2-4/+7
This fixes memory leaks that may be caused by I/O errors during L1 table growth (can happen during save_vm) and in qemu-img check. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-08rbd: Add bdrv_truncate implementationJosh Durgin1-0/+14
Reviewed-by: Christian Brunner <chb@muc.de> Signed-off-by: Josh Durgin <josh.durgin@dreamhost.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-08rbd: check return values when scheduling aioJosh Durgin1-4/+20
If scheduling fails, the number of outstanding I/Os must be correct, or there will be a hang when waiting for everything to be flushed. Reviewed-by: Christian Brunner <chb@muc.de> Reported-by: Stefan Hajnoczi <stefanha@gmail.com> Signed-off-by: Josh Durgin <josh.durgin@dreamhost.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-08rbd: allow configuration of rados from the rbd filenameJosh Durgin1-17/+102
The new format is rbd:pool/image[@snapshot][:option1=value1[:option2=value2...]] Each option is used to configure rados, and may be any Ceph option, or "conf". The "conf" option specifies a Ceph configuration file to read. This allows rbd volumes from more than one Ceph cluster to be used by specifying different monitor addresses, as well as having different logging levels or locations for different volumes. Reviewed-by: Christian Brunner <chb@muc.de> Signed-off-by: Josh Durgin <josh.durgin@dreamhost.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-08rbd: use the higher level librbd instead of just libradosJosh Durgin3-673/+226
librbd stacks on top of librados to provide access to rbd images. Using librbd simplifies the qemu code, and allows qemu to use new versions of the rbd format with few (if any) changes. Reviewed-by: Christian Brunner <chb@muc.de> Signed-off-by: Josh Durgin <josh.durgin@dreamhost.com> Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-08block/raw-posix: get right partition sizeChristoph Egger1-0/+32
use the correct way to get the size of a disk device or partition From: Adam Hamsik <haad@netbsd.org> Signed-off-by: Christoph Egger <Christoph.Egger@amd.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-08block/raw-posix: use a character device if a block device is givenChristoph Egger1-0/+43
On NetBSD a userland process is better with the character device interface. In addition, a block device can't be opened twice; if a Xen backend opens it, qemu can't and vice-versa. Signed-off-by: Christoph Egger <Christoph.Egger@amd.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-08vmdk: fix endianness bugsAlexander Graf1-8/+14
The vmdk code is sloppy when handling the header descriptor during creation of an image. Fix all header accesses in the create path to either store native endianness or convert it when appropriate. Reported-by: Yury Tsarev <ytsarev@novell.com> Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-08block: clarify the meaning of BDRV_O_NOCACHEChristoph Hellwig7-19/+13
Change BDRV_O_NOCACHE to only imply bypassing the host OS file cache, but no writeback semantics. All existing callers are changed to also specify BDRV_O_CACHE_WB to give them writeback semantics. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-08ide/core: Remove explicit setting of BM_STATUS_INTKevin Wolf1-3/+4
BM_STATUS_INT is automatically set during ide_set_irq(), there's no reason to set it manually in addition. There is even one case where the interrupt status bit was set, but no IRQ was raised. This is when the PRD table was reached but there is more data to transfer. The correct behaviour for this case is not to set BM_STATUS_INT. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-08virtio: Move virtio-pci to hw libraryJan Kiszka2-1/+1
This module has no target dependencies (except for target_phys_addr_t size) and can thus be built as part of libhw. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-06-08target-i386: Make x86 mfence and lfence illegal without SSE2Martin Simmons1-1/+1
While trying to use qemu -cpu pentium3 to test for incorrect uses of certain SSE2 instructions, I found that QEMU allowed the mfence and lfence instructions to be executed even though Pentium 3 doesn't support them. According to the processor specs (and experience on a real Pentium 3), these instructions are only available with SSE2, but QEMU is checking for SSE. The check for the related sfence instruction is correct (it works with SSE). This trival patch fixes the test. Signed-off-by: Martin Simmons <martin@lispworks.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-06-08m68k: Replace gen_im32() by tcg_const_i32()Laurent Vivier1-23/+20
Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Andreas Färber <andreas.faerber@web.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-06-08slirp: fix guestfwd idAlexander Graf1-1/+1
When using -net user,guestfwd=... Qemu immediately complains about the id being in invalid format. This is because we pass in an id that contains a colon, while the id restrictions don't allow colons. This patch changes the colon into a dot, making guestfwd work again. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-06-08Fix compilation warning due to missing header for sigaction (followup)Alexandre Raymond19-26/+0
This patch removes all references to signal.h when qemu-common.h is included as they become redundant. Signed-off-by: Alexandre Raymond <cerbere@gmail.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-06-08Fix compilation warning due to missing header for sigactionAlexandre Raymond1-0/+1
Fix the following warning by including signal.h directly in qemu-common.h ----8<---- iohandler.c: In function ‘qemu_init_child_watch’: iohandler.c:172: warning: implicit declaration of function ‘sigaction’ iohandler.c:172: warning: nested extern declaration of ‘sigaction’ ----8<---- Signed-off-by: Alexandre Raymond <cerbere@gmail.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-06-07Add an isa device for SGAGlauber Costa3-1/+66
This patch adds a dummy legacy ISA device whose responsibility is to deploy sgabios, an option rom for a serial graphics adapter. The proposal is that this device is always-on when -nographics, but can otherwise be enable in any setup when -device sga is used. [v2: suggestions on qdev by Markus ] [v3: cleanups and documentation, per list suggestions ] Signed-off-by: Glauber Costa <glommer@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-06-07json-parser: add handling for NULL token listMichael Roth1-1/+5
Currently a NULL token list will crash the parser, instead we have it pass back a NULL QObject. Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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