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2016-01-29sparc: Clean up includesPeter Maydell
Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1453832250-766-7-git-send-email-peter.maydell@linaro.org
2016-01-29ppc: Clean up includesPeter Maydell
Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1453832250-766-6-git-send-email-peter.maydell@linaro.org
2016-01-29lm32: Clean up includesPeter Maydell
Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1453832250-766-5-git-send-email-peter.maydell@linaro.org
2016-01-29exec: Clean up includesPeter Maydell
Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1453832250-766-4-git-send-email-peter.maydell@linaro.org
2016-01-29crypto: Clean up includesPeter Maydell
Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1453832250-766-3-git-send-email-peter.maydell@linaro.org
2016-01-29migration: Clean up includesPeter Maydell
Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1453832250-766-2-git-send-email-peter.maydell@linaro.org
2016-01-28Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20160128' into stagingPeter Maydell
Mostly bugfixes and small improvements; and the gdb target.xml patch. # gpg: Signature made Thu 28 Jan 2016 11:02:14 GMT using RSA key ID C6F02FAF # gpg: Good signature from "Cornelia Huck <huckc@linux.vnet.ibm.com>" # gpg: aka "Cornelia Huck <cornelia.huck@de.ibm.com>" * remotes/cohuck/tags/s390x-20160128: s390x: s390_cpu_get_phys_page_debug has to return -1 gdb: provide the name of the architecture in the target.xml s390x/css: fix control flags during csch watchdog/diag288: don't reset for action=none|debug|pause watchdog: introduction of get_watchdog_action s390x: fix generation of event information crw s390x/ioinst: set type and len for SEI response s390x/sclp: add device to the sysbus in sclp_realize s390x/machine: make addon register fields static s390x/skeys: Fix instance and class size Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-01-28microblaze: Clean up includesPeter Maydell
Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 1453831531-667-3-git-send-email-peter.maydell@linaro.org
2016-01-28disas/microblaze.c: Don't define TRUE or FALSEPeter Maydell
Don't define TRUE and FALSE locally or manually include stdio.h; instead use osdep.h which provides them. This is a necessary prerequisite for moving to "everywhere includes osdep.h", because otherwise there is a compile error due to the redefinition of TRUE and FALSE. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com> Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 1453831531-667-2-git-send-email-peter.maydell@linaro.org
2016-01-27s390x: s390_cpu_get_phys_page_debug has to return -1David Hildenbrand
If translation fails, we have to return -1. For now, we would simply return the value last stored to raddr (if any). This way, reading invalid memory via gdb will return values, although it shouldn't. Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-01-27gdb: provide the name of the architecture in the target.xmlDavid Hildenbrand
This patch provides the name of the architecture in the target.xml if available. This allows the remote gdb to detect the target architecture on its own - so there is no need to specify it manually (e.g. if gdb is started without a binary) using "set arch *arch_name*". The name of the architecture is provided by a callback that can be implemented by all architectures. The arm implementation has special handling for iwmmxt and returns arm otherwise. This can be extended if necessary. Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> [rework to use a callback] Message-Id: <1449144881-130935-1-git-send-email-borntraeger@de.ibm.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-01-27s390x/css: fix control flags during cschHalil Pasic
From the beginning, css support contained an error in csch handling: instead of setting the clear bit in the function control bits twice, we need to set the clear pending bit in the activity control bits. Let's fix this. Cc: qemu-stable@nongnu.org Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-01-27watchdog/diag288: don't reset for action=none|debug|pauseBo Tu
If the watchdog expires and the guest is not notified (NONE, DEBUG, PAUSE), we must not reset the watchdog device, otherwise watchdog_ping() and watchdog_stop() will fail when triggered by the guest. This reset behavior matches to the z/VM behavior when a custom command is to be executed on expiry. Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Bo Tu <tubo@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-01-27watchdog: introduction of get_watchdog_actionBo Tu
Add get_watchdog_action(void) to allow access to the configured action. Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Bo Tu <tubo@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-01-27s390x: fix generation of event information crwSong Shan Gong
Only one channel report word (crw) may be pending if there is event-information pending. This patch introduces a bool-type field 'sei_pending' for the channel subsystem, which indicates whether there are pending events. It is set when event information is made pending and the crw generated, and cleared after the guest has collected all pending event information. A crw is not generated if this flag had already been set. Signed-off-by: Song Shan Gong <gongss@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-01-27s390x/ioinst: set type and len for SEI responsePierre Morel
If no event information is pending, the return code is set to 0x0005 and the length of the response is set to 8 bytes. Signed-off-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Song Shan Gong <gongss@linux.vnet.ibm.com> Cc: qemu-stable@nongnu.org Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-01-27s390x/sclp: add device to the sysbus in sclp_realizeDavid Hildenbrand
The init of a device should have no side effects. Therefore move registering of the event facility into the realize function, so multiple instances of the SCLP device can be created e.g. for introspection. Add some more detail as to why we have to add it to the sysbus at all. Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-01-27s390x/machine: make addon register fields staticChristian Borntraeger
No need to have them as global symbol. Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-01-27s390x/skeys: Fix instance and class sizeChristian Borntraeger
fix a typo that messes up instance and class size. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-01-26Merge remote-tracking branch 'remotes/sstabellini/tags/xen-20160126-2' into ↵Peter Maydell
staging Xen 2016/01/26 with Signed-off-by lines. # gpg: Signature made Tue 26 Jan 2016 17:20:12 GMT using RSA key ID 70E1AE90 # gpg: Good signature from "Stefano Stabellini <stefano.stabellini@eu.citrix.com>" * remotes/sstabellini/tags/xen-20160126-2: xen: make it possible to build without the Xen PV domain builder xen: domainbuild: reopen libxenctrl interface after forking for domain watcher. xen: Use stable library interfaces when they are available. xen: Switch uses of xc_map_foreign_{pages,bulk} to use libxenforeignmemory API. xen: Switch uses of xc_map_foreign_range into xc_map_foreign_pages xen: Switch to libxengnttab interface for compat shims. xen: Switch to libxenevtchn interface for compat shims. xen_console: correctly cleanup primary console on teardown. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-01-26xen: make it possible to build without the Xen PV domain builderIan Campbell
Until the previous patch this relied on xc_fd(), which was only implemented for Xen 4.0 and earlier. Given this wasn't working since Xen 4.0 I have marked this as disabled by default. Removing this support drops the use of a bunch of symbols from libxenctrl, specifically: - xc_domain_create - xc_domain_destroy - xc_domain_getinfo - xc_domain_max_vcpus - xc_domain_setmaxmem - xc_domain_unpause - xc_evtchn_alloc_unbound - xc_linux_build This is another step towards only using Xen libraries which provide a stable inteface. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
2016-01-26xen: domainbuild: reopen libxenctrl interface after forking for domain watcher.Ian Campbell
Using an existing libxenctrl handle after a fork was never particularly safe (especially if foreign mappings existed at the time of the fork) and the xc fd has been unavailable for many releases. Reopen the handle after fork and therefore do away with xc_fd(). Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
2016-01-26xen: Use stable library interfaces when they are available.Ian Campbell
In Xen 4.7 we are refactoring parts libxenctrl into a number of separate libraries which will provide backward and forward API and ABI compatiblity. Specifically libxenevtchn, libxengnttab and libxenforeignmemory. Previous patches have already laid the groundwork for using these by switching the existing compatibility shims to reflect the intefaces to these libraries. So all which remains is to update configure to detect the libraries and enable their use. Although they are notionally independent we take an all or nothing approach to the three libraries since they were added at the same time. The only non-obvious bit is that we now open a proper xenforeignmemory handle for xen_fmem instead of reusing the xen_xc handle. Build tested with 4.0 .. 4.6 (inclusive) and the patches targetting 4.7 which adds these libraries. This uses CONFIG_XEN_CTRL_INTERFACE_VERSION == 471 to cover the introduction of these new interfaces. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
2016-01-26xen: Switch uses of xc_map_foreign_{pages,bulk} to use libxenforeignmemory API.Ian Campbell
In Xen 4.7 we are refactoring parts libxenctrl into a number of separate libraries which will provide backward and forward API and ABI compatiblity. One such library will be libxenforeignmemory which provides access to privileged foreign mappings and which will provide an interface equivalent to xc_map_foreign_{pages,bulk}. The new xenforeignmemory_map() function behaves like xc_map_foreign_pages() when the err argument is NULL and like xc_map_foreign_bulk() when err is non-NULL, which maps into the shim here onto checking err == NULL and calling the appropriate old function. Note that xenforeignmemory_map() takes the number of pages before the arrays themselves, in order to support potentially future use of variable-length-arrays in the prototype (in the future, when Xen's baseline toolchain requirements are new enough to ensure VLAs are supported). In preparation for adding support for libxenforeignmemory add support to the <=4.0 and <=4.6 compat code in xen_common.h to allow us to switch to using the new API. These shims will disappear for versions of Xen which include libxenforeignmemory. Since libxenforeignmemory will have its own handle type but for <= 4.6 the functionality is provided by using a libxenctrl handle we introduce a new global xen_fmem alongside the existing xen_xc. In fact we make xen_fmem a pointer to the existing xen_xc, which then works correctly with both <=4.0 (xc handle is an int) and <=4.6 (xc handle is a pointer). In the latter case xen_fmem is actually a double indirect pointer, but it all falls out in the wash. Unlike libxenctrl libxenforeignmemory has an explicit unmap function, rather than just specifying that munmap should be used, so the unmap paths are updated to use xenforeignmemory_unmap, which is a shim for munmap on these versions of xen. The mappings in xen-hvm.c do not appear to be unmapped (which makes sense for a qemu-dm process) In fb_disconnect this results in a change from simply mmap over the existing mapping (with an implicit munmap) to expliclty unmapping with xenforeignmemory_unmap and then mapping the required anonymous memory in the same hole. I don't think this is a problem since any other thread which was racily touching this region would already be running the risk of hitting the mapping halfway through the call. If this is thought to be a problem then we could consider adding an extra API to the libxenforeignmemory interface to replace a foreign mapping with anonymous shared memory, but I'd prefer not to. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
2016-01-26xen: Switch uses of xc_map_foreign_range into xc_map_foreign_pagesIan Campbell
In Xen 4.7 we are refactoring parts libxenctrl into a number of separate libraries which will provide backward and forward API and ABI compatiblity. One such library will be libxenforeignmemory which provides access to privileged foreign mappings and which will provide an interface equivalent to xc_map_foreign_{pages,bulk}. In preparation for this switch all uses of xc_map_foreign_range to xc_map_foreign_pages. This is trivial because size was always XC_PAGE_SIZE so the necessary adjustments are trivial: * Pass &mfn (an array of length 1) instead of mfn. The function takes a pointer to const, so there is no possibily of mfn changing due to this change. * Pass nr_pages=1 instead of size=XC_PAGE_SIZE There is one wrinkle in xen_console.c:con_initialise() where con->ring_ref is an int but can in some code paths (when !xendev->dev) be treated as an mfn. I think this is an existing latent truncation hazard on platforms where xen_pfn_t is 64-bit and int is 32-bit (e.g. amd64, both arm* variants). I'm unsure under what circumstances xendev->dev can be NULL or if anything elsewhere ensures the value fits into an int. For now I just use a temporary xen_pfn_t to in effect upcast the pointer from int* to xen_pfn_t*. In xenfb.c:common_bind we now explicitly launder the mfn into a xen_pfn_t, so it has the correct type to be passed to xc_map_foreign_pages and doesn't provoke warnings on 32-bit x86. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
2016-01-26xen: Switch to libxengnttab interface for compat shims.Ian Campbell
In Xen 4.7 we are refactoring parts libxenctrl into a number of separate libraries which will provide backward and forward API and ABI compatiblity. One such library will be libxengnttab which provides access to grant tables. In preparation for this switch the compatibility layer in xen_common.h (which support building with older versions of Xen) to use what will be the new library API. This means that the gnttab shim will disappear for versions of Xen which include libxengnttab. To simplify things for the <= 4.0.0 support we wrap the int fd in a malloc(sizeof int) such that the handle is always a pointer. This leads to less typedef headaches and the need for XC_HANDLER_INITIAL_VALUE etc for these interfaces. Note that this patch does not add any support for actually using libxengnttab, it just adjusts the existing shims. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
2016-01-26xen: Switch to libxenevtchn interface for compat shims.Ian Campbell
In Xen 4.7 we are refactoring parts libxenctrl into a number of separate libraries which will provide backward and forward API and ABI compatiblity. One such library will be libxenevtchn which provides access to event channels. In preparation for this switch the compatibility layer in xen_common.h (which support building with older versions of Xen) to use what will be the new library API. This means that the evtchn shim will disappear for versions of Xen which include libxenevtchn. To simplify things for the <= 4.0.0 support we wrap the int fd in a malloc(sizeof int) such that the handle is always a pointer. This leads to less typedef headaches and the need for XC_HANDLER_INITIAL_VALUE etc for these interfaces. Note that this patch does not add any support for actually using libxenevtchn, it just adjusts the existing shims. Note that xc_evtchn_alloc_unbound functionality remains in libxenctrl, since that functionality is not exposed by /dev/xen/evtchn. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
2016-01-26xen_console: correctly cleanup primary console on teardown.Ian Campbell
All of the work in con_disconnect applies to the primary console case (when xendev->dev is NULL). Therefore remove the early check and bail and allow it to fall through. All of the existing code is correctly conditional already. The ->dev and ->gnttabdev handles are either both set or neither. For consistency with con_initialise() with to the former here too. With this con_initialise and con_disconnect now mirror each other. Fix up a hard tab in the function while editing. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
2016-01-26Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell
* chardev support for TLS and leak fix * NBD fix from Denis * condvar fix from Dave * kvm_stat and dump-guest-memory almost rewrite * mem-prealloc fix from Luiz * manpage style improvement # gpg: Signature made Tue 26 Jan 2016 14:58:18 GMT using RSA key ID 78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" * remotes/bonzini/tags/for-upstream: (49 commits) scripts/dump-guest-memory.py: Fix module docstring scripts/dump-guest-memory.py: Introduce multi-arch support scripts/dump-guest-memory.py: Cleanup functions scripts/dump-guest-memory.py: Improve python 3 compatibility scripts/dump-guest-memory.py: Make methods functions scripts/dump-guest-memory.py: Move constants to the top nbd: add missed aio_context_acquire in nbd_export_new memory: exit when hugepage allocation fails if mem-prealloc cpus: use broadcast on qemu_pause_cond scripts/kvm/kvm_stat: Add optparse description scripts/kvm/kvm_stat: Add interactive filtering scripts/kvm/kvm_stat: Fixup filtering scripts/kvm/kvm_stat: Fix rlimit for unprivileged users scripts/kvm/kvm_stat: Read event values as u64 scripts/kvm/kvm_stat: Cleanup and pre-init perf_event_attr scripts/kvm/kvm_stat: Fix output formatting scripts/kvm/kvm_stat: Make tui function a class scripts/kvm/kvm_stat: Remove unneeded X86_EXIT_REASONS scripts/kvm/kvm_stat: Group arch specific data scripts/kvm/kvm_stat: Cleanup of Event class ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-01-26scripts/dump-guest-memory.py: Fix module docstringJanosch Frank
The module docstring is changed into a multi-line comment to comply with pep 257. The comment about the docstring that gets used by gdb to print the help is moved to the location of the docstring. Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Message-Id: <1453464520-3882-7-git-send-email-frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26scripts/dump-guest-memory.py: Introduce multi-arch supportJanosch Frank
By modelling the ELF with ctypes we not only gain full python 3 support but can also create dumps for different architectures more easily. Tested-by: Andrew Jones <drjones@redhat.com> Acked-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Message-Id: <1453464520-3882-6-git-send-email-frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26scripts/dump-guest-memory.py: Cleanup functionsJanosch Frank
Increase readability by adding newlines and comments, as well as removing wrong whitespaces and C style braces around conditionals and loops. Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Message-Id: <1453464520-3882-5-git-send-email-frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26scripts/dump-guest-memory.py: Improve python 3 compatibilityJanosch Frank
This commit does not make the script python 3 compatible, it is a preparation that fixes the easy and common incompatibilities. Print is a function in python 3 and therefore needs braces around its arguments. Range does not cast a gdb.Value object to int in python 3, we have to do it ourselves. Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Message-Id: <1453464520-3882-4-git-send-email-frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26scripts/dump-guest-memory.py: Make methods functionsJanosch Frank
The functions dealing with qemu components rarely used parts of the class, so they were moved out of the class. As the uintptr_t variable is needed both within and outside the class, it was made a constant and moved to the top. Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Message-Id: <1453464520-3882-3-git-send-email-frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26scripts/dump-guest-memory.py: Move constants to the topJanosch Frank
The constants bloated the class definition and were therefore moved to the top. Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Message-Id: <1453464520-3882-2-git-send-email-frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26nbd: add missed aio_context_acquire in nbd_export_newDenis V. Lunev
blk_invalidate_cache() can call qcow2_invalidate_cache which performs IO inside. Signed-off-by: Denis V. Lunev <den@openvz.org> CC: Kevin Wolf <kwolf@redhat.com> CC: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <1453273940-15382-3-git-send-email-den@openvz.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26memory: exit when hugepage allocation fails if mem-preallocLuiz Capitulino
When -mem-prealloc is passed on the command-line, the expected behavior is to exit if the hugepage allocation fails. However, this behavior is broken since commit cc57501dee which made hugepage allocation fall back to regular ram in case of faliure. This commit restores the expected behavior for -mem-prealloc. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Message-Id: <20160122091501.75bbd42a@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26cpus: use broadcast on qemu_pause_condDr. David Alan Gilbert
Jiri saw a hang on pause_all_vcpus called from postcopy_start, where the cpus are all apparently stopped ('stopped' flag set) but pause_all_vcpus is still stuck on a cond_wait on qemu_paused_cond. We suspect this is happening if a qmp_stop is called at about the same time as the postcopy code calls that pause_all_vcpus; although they both should have the main lock held, Paolo spotted the cond_wait unlocks the global lock so perhaps they both could end up waiting at the same time? Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reported-by: Jiri Denemark <jdenemar@redhat.com> Message-Id: <1453716498-27238-1-git-send-email-dgilbert@redhat.com> Cc: qemu-stable@nongnu.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26scripts/kvm/kvm_stat: Add optparse descriptionJanosch Frank
Added a description text that explains what the script does and which requirements have to be met to let it run. The help formatter class is needed as the default optparse formatter makes the text unreadable. Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Message-Id: <1452525484-32309-35-git-send-email-frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26scripts/kvm/kvm_stat: Add interactive filteringJanosch Frank
Interactively changing the filter is much more useful than the drilldown, because it is more versatile. With this patch, the filter can be changed by pressing 'f' in the text ui and entering a new filter regex. Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Message-Id: <1452525484-32309-34-git-send-email-frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26scripts/kvm/kvm_stat: Fixup filteringJanosch Frank
When filtering, the group leader event should not be disabled, as all other events under it will also be disabled. Also we should make sure that values from disabled fields will not be displayed. This also filters the fields from the log and batch output for better readability. Also the drilldown update now directly checks for the stats' field filter and (un)sets drilldown accordingly. Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Message-Id: <1452525484-32309-33-git-send-email-frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26scripts/kvm/kvm_stat: Fix rlimit for unprivileged usersJanosch Frank
Setting the hard limit as a unprivileged user either returns an error when it is higher than the current one or irreversibly sets it lower. Therefore we leave the hardlimit untouched as long as we don't need to raise it as this needs CAP_SYS_RESOURCE. This gives admins the possibility to run the script as an unprivileged user to increase security. Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Message-Id: <1452525484-32309-32-git-send-email-frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26scripts/kvm/kvm_stat: Read event values as u64Janosch Frank
The struct read_format, which denotes the returned values on a read states that the values are u64 and not long long which is used for struct unpacking. Therefore the 'q' long long formatter was exchanged with 'Q' which is the format for u64 data. Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Message-Id: <1452525484-32309-31-git-send-email-frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26scripts/kvm/kvm_stat: Cleanup and pre-init perf_event_attrJanosch Frank
All initializations of the ctypes struct that don't need additional information were moved to its init method. The unneeded initializations for sample_type and sample_period were removed as they do not affect the counters that are read. This improves readability of the setup_event_attribute by halfing its LOC. Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Message-Id: <1452525484-32309-30-git-send-email-frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26scripts/kvm/kvm_stat: Fix output formattingJanosch Frank
The key names in log mode were capped to 10 characters which is not enough for distinguishing between keys. Capping was therefore removed. In batch mode the spacing between keys and values was too narrow and therefore had to be extended to 42. Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Message-Id: <1452525484-32309-29-git-send-email-frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26scripts/kvm/kvm_stat: Make tui function a classJanosch Frank
The tui function itself had a few sub-functions and therefore basically already was class-like. Making it an actual one with proper methods improved readability. The curses wrapper was dropped in favour of __entry/exit__ methods that implement the same behaviour. Also renamed single character variable name, so the name reflects the content. Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Message-Id: <1452525484-32309-28-git-send-email-frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26scripts/kvm/kvm_stat: Remove unneeded X86_EXIT_REASONSJanosch Frank
The architecture detection method directly accesses vmx and smv exit reason constants. Therefore we don't need it anymore. Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Message-Id: <1452525484-32309-27-git-send-email-frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26scripts/kvm/kvm_stat: Group arch specific dataJanosch Frank
Using global variables and multiple initialization functions for arch specific data makes the code hard to read. By grouping them in the Arch classes we encapsulate and initialize them in one place. Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Message-Id: <1452525484-32309-26-git-send-email-frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26scripts/kvm/kvm_stat: Cleanup of Event classJanosch Frank
Added additional newlines for readability. Factored out attribute and event setup code into own methods. Exchanged file() with preferred open(). Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Message-Id: <1452525484-32309-25-git-send-email-frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26scripts/kvm/kvm_stat: Cleanup of Groups classJanosch Frank
Introduced separating newlines for readability and removed special treatment/variable of the group leader. Renamed fmt to read_format. The group leader's file descriptor will not be turned into a file object anymore, instead os.read is used to read from the descriptor. Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Message-Id: <1452525484-32309-24-git-send-email-frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>