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2016-12-22Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell
* core support for MemoryRegionCache from myself * rules.mak speedup and cleanups from myself and Marc-Adnré * multiboot command line fix from Vlad * SCSI fixes from myself * small qemu-timer speedup from myself * x86 debugging improvements from Doug * configurable Q35 devices from Chao * x86 5-level paging support from Kirill * x86 SHA_NI support for KVM from Yi Sun * improved kvmclock migration logic from Marcelo * bugfixes and doc fixes from others # gpg: Signature made Thu 22 Dec 2016 15:01:13 GMT # gpg: using RSA key 0xBFFBD25F78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" # Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1 # Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83 * remotes/bonzini/tags/for-upstream: (25 commits) x86: implement la57 paging mode target-i386: Fix eflags.TF/#DB handling of syscall/sysret insns kvmclock: reduce kvmclock difference on migration kvm: sync linux headers scsi-disk: fix VERIFY for scsi-block hw/block/pflash_cfi*.c: fix confusing assert fail message multiboot: copy the cmdline verbatim, unescape module strings x86: Fix x86_64 'g' packet response to gdb from 32-bit mode. pc: make pit configurable pc: make sata configurable pc: make smbus configurable target-i386: Add Intel SHA_NI instruction support. block: drop remaining legacy aio functions in comment main-loop: update comment for qemu_mutex_lock/unlock_iothread timer: fix misleading comment in timer.h qemu-timer: check active_timers outside lock/event virtio-scsi: introduce virtio_scsi_acquire/release build-sys: remove libtool left-over rules.mak: add more rules to avoid chaining rules.mak: speedup save-vars load-vars ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-12-22build-sys: remove libtool left-overMarc-André Lureau
Libtool support was removed in commit e999ee44349, there is a few left-over. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20161108070513.30274-1-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-12-22configure: add CONFIG_GCRYPT_HMAC itemLongpeng(Mike)
This item will be used for support libcrypt-backed HMAC algorithms. Support for hmac has been added in Libgcrypt 1.6.0, but we cannot use pkg-config to get libcrypt's version. However we can make a in configure to know whether current libcrypt support hmac. Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2016-11-29rules.mak: Also try -r to build modulesPaolo Bonzini
Building qemu fails in distributions where gcc enables PIE by default (e.g. Debian unstable) with: /usr/bin/ld: -r and -pie may not be used together You have to use -r instead of -Wl,-r to avoid gcc passing -pie to the linker when PIE is enabled and a relocatable object is passed. However, clang does not know about -r, so try -Wl,-r first. [This is a fix for commit c96f0ee6a67ca6277366e78ce5d84d5c20dd596f ("rules.mak: Use -r instead of -Wl, -r to fix building when PIE is default") which mostly worked but broke the ./configure --enable-modules build with clang. --Stefan] Reported-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 20161129153720.29747-1-pbonzini@redhat.com Cc: qemu-stable@nongnu.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-11-29configure: fix LTTng UST tracing backend detectionFrancis Deslauriers
The detection program needs to be linked with -ldl to build succesfully with recent versions of LTTng-UST. We also need to add -ldl to the libs required to build the LTTng-UST backend (lttng_ust_libs). Signed-off-by: Francis Deslauriers <francis.deslauriers@efficios.com> Message-id: 1480348337-24271-1-git-send-email-francis.deslauriers@efficios.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-11-22Fix FreeBSD (10.x) build after 7dc9ae43Ed Maste
Include sys/user.h for declaration of 'struct kinfo_proc'. Add -lutil to qemu-ga link for kinfo_getproc. Signed-off-by: Ed Maste <emaste@freebsd.org> Message-id: 1479778365-11315-1-git-send-email-emaste@freebsd.org Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-11-10Fix cursesw detectionSamuel Thibault
On systems which do not provide ncursesw.pc and whose /usr/include/curses.h does not include wide support, we should not only try with no -I, i.e. /usr/include, but also with -I/usr/include/ncursesw. To properly detect for wide support with and without -Werror, we need to check for the presence of e.g. the WACS_DEGREE macro. We also want to stop at the first curses_inc_list configuration which works, and make sure to set IFS to : at each new loop. Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Tested-by: Cornelia Huck <cornelia.huck@de.ibm.com> Message-id: 20161109102752.13255-1-samuel.thibault@ens-lyon.org Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2016-10-31sockets: add AF_VSOCK supportStefan Hajnoczi
Add the AF_VSOCK address family so that qemu-ga will be able to use virtio-vsock. The AF_VSOCK address family uses <cid, port> address tuples. The cid is the unique identifier comparable to an IP address. AF_VSOCK does not use name resolution so it's easy to convert between struct sockaddr_vm and strings. This patch defines a VsockSocketAddress instead of trying to piggy-back on InetSocketAddress. This is cleaner in the long run since it avoids lots of IPv4 vs IPv6 vs vsock special casing. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> * treat trailing commas as garbage when parsing (Eric Blake) * add configure check instead of checking AF_VSOCK directly Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2016-10-30configure: Support enable/disable COLO featurezhanghailiang
configure --enable-colo/--disable-colo to switch COLO support on/off. COLO feature doesn't depend on any other external libraries, So here it is reasonable to enable COLO by default, to avoid re-compile QEMU if users want to use this capability. Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Amit Shah <amit@amitshah.net>
2016-10-28Merge remote-tracking branch 'remotes/kraxel/tags/pull-ui-20161028-1' into ↵Peter Maydell
staging braille fixes and improvements. curses fix, switch to cursesw. gtk bugfixes. # gpg: Signature made Fri 28 Oct 2016 13:05:12 BST # gpg: using RSA key 0x4CB6D8EED3E87138 # gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" # gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" # gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" # Primary key fingerprint: A032 8CFF B93A 17A7 9901 FE7D 4CB6 D8EE D3E8 7138 * remotes/kraxel/tags/pull-ui-20161028-1: curses: Use cursesw instead of curses curses: fix left/right arrow translation ui/gtk: Fix non-working DELETE key gtk: fix compilation warning with gtk 3.22.2 Defer BrlAPI tty acquisition to when guest starts using device Add dots keypresses support to the baum braille device Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-10-28curses: Use cursesw instead of cursesSamuel Thibault
Use ncursesw package instead of curses on non-mingw, and check a few functions. Also take cflags from pkg-config, since cursesw headers may be in a separate, non-default directory. Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Message-id: 20161015195308.20473-3-samuel.thibault@ens-lyon.org Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2016-10-28configure, ppc64: Copy skiboot.lid to build directory when configuringAlexey Kardashevskiy
When configured to compile out of tree, the configure script copies BIOS blobs to the build directory. However since the PPC64 powernv machine ROM has .lid extension, it is ignored and "make check" fails when trying the powernv machine. This adds *.lid to the list of copied blobs. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-10-26tcg: Add CONFIG_ATOMIC64Richard Henderson
Allow qemu to build on 32-bit hosts without 64-bit atomic ops. Even if we only allow 32-bit hosts to multi-thread emulate 32-bit guests, we still need some way to handle the 32-bit guest using a 64-bit atomic operation. Do so by dropping back to single-step. Reviewed-by: Emilio G. Cota <cota@braap.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2016-10-26tcg: Add atomic128 helpersRichard Henderson
Force the use of cmpxchg16b on x86_64. Wikipedia suggests that only very old AMD64 (circa 2004) did not have this instruction. Further, it's required by Windows 8 so no new cpus will ever omit it. If we truely care about these, then we could check this at startup time and then avoid executing paths that use it. Reviewed-by: Emilio G. Cota <cota@braap.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2016-10-21linux-user: Add support for syncfs() syscallAleksandar Markovic
This patch implements Qemu user mode syncfs() syscall support. Syscall syncfs() syncs the filesystem containing file determined by the open file descriptor passed as the argument to syncfs(). The implementation consists of a straightforward invocation of host's syncfs(). Configure and strace support is included as well. Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2016-10-21linux-user: Add support for clock_adjtime() syscallAleksandar Markovic
This patch implements Qemu user mode clock_adjtime() syscall support. The implementation is based on invocation of host's clock_adjtime(). Signed-off-by: Aleksandar Rikalo <aleksandar.rikalo@imgtec.com> Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2016-10-11build: Work around SIZE_MAX bug in OSX headersEric Blake
C99 requires SIZE_MAX to be declared with the same type as the integral promotion of size_t, but OSX mistakenly defines it as an 'unsigned long long' expression even though size_t is only 'unsigned long'. Rather than futzing around with whether size_t is 32- or 64-bits wide (which would be needed if we cared about using SIZE_T in a #if expression), just hard-code it with a cast. This is not a strict C99-compliant definition, because it doesn't work in the preprocessor, but if we later need that, the build will break on Mac to inform us to improve our replacement at that time. See also https://patchwork.ozlabs.org/patch/542327/ for an instance where the wrong type trips us up if we don't fix it for good in osdep.h. Some versions of glibc make a similar mistake with SSIZE_MAX; the goal is that the approach of this patch could be copied to work around that problem if it ever becomes important to us. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1476200784-17210-1-git-send-email-eblake@redhat.com Reviewed-by: John Arbuckle <programmingkidx@gmail.com> Tested-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-09-29oslib-posix: add a configure switch to debug stack usagePeter Lieven
this adds a knob to track the maximum stack usage of stacks created by qemu_alloc_stack. Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-09-28Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell
* thread-safe tb_flush (Fred, Alex, Sergey, me, Richard, Emilio,... :-) * license clarification for compiler.h (Felipe) * glib cflags improvement (Marc-André) * checkpatch silencing (Paolo) * SMRAM migration fix (Paolo) * Replay improvements (Pavel) * IOMMU notifier improvements (Peter) * IOAPIC now defaults to version 0x20 (Peter) # gpg: Signature made Tue 27 Sep 2016 10:57:40 BST # gpg: using RSA key 0xBFFBD25F78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" # Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1 # Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83 * remotes/bonzini/tags/for-upstream: (28 commits) replay: allow replay stopping and restarting replay: vmstate for replay module replay: move internal data to the structure cpus-common: lock-free fast path for cpu_exec_start/end tcg: Make tb_flush() thread safe cpus-common: Introduce async_safe_run_on_cpu() cpus-common: simplify locking for start_exclusive/end_exclusive cpus-common: remove redundant call to exclusive_idle() cpus-common: always defer async_run_on_cpu work items docs: include formal model for TCG exclusive sections cpus-common: move exclusive work infrastructure from linux-user cpus-common: fix uninitialized variable use in run_on_cpu cpus-common: move CPU work item management to common code cpus-common: move CPU list management to common code linux-user: Add qemu_cpu_is_self() and qemu_cpu_kick() linux-user: Use QemuMutex and QemuCond cpus: Rename flush_queued_work() cpus: Move common code out of {async_, }run_on_cpu() cpus: pass CPUState to run_on_cpu helpers build-sys: put glib_cflags in QEMU_CFLAGS ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-09-27qdisk - hw/block/xen_disk: grant copy implementationPaulina Szubarczyk
Copy data operated on during request from/to local buffers to/from the grant references. Before grant copy operation local buffers must be allocated what is done by calling ioreq_init_copy_buffers. For the 'read' operation, first, the qemu device invokes the read operation on local buffers and on the completion grant copy is called and buffers are freed. For the 'write' operation grant copy is performed before invoking write by qemu device. A new value 'feature_grant_copy' is added to recognize when the grant copy operation is supported by a guest. Signed-off-by: Paulina Szubarczyk <paulinaszubarczyk@gmail.com> Reviewed-by: Stefano Stabellini <sstabellini@kernel.org> Acked-by: Anthony PERARD <anthony.perard@citrix.com> Acked-by: Roger Pau Monné <roger.pau@citrix.com>
2016-09-27build-sys: put glib_cflags in QEMU_CFLAGSMarc-André Lureau
This way, overriding CFLAGS on make command line keeps glib-cflags and doesn't break the build. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20160925205748.6280-2-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-09-27build-sys: remove unused GLIB_CFLAGSMarc-André Lureau
Message-Id: <20160925205748.6280-1-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-09-23configure: Remove detection code for UUIDFam Zheng
All code now uses built-in UUID implementation. Remove the code of libuuid and make --enable-uuid and --disable-uuid only print a message. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com> Message-Id: <1474432046-325-9-git-send-email-famz@redhat.com>
2016-09-23vhdx: Use QEMU UUID APIFam Zheng
This removes our dependency to libuuid, so that the driver can always be built. Similar to how we handled data plane configure options, --enable-vhdx and --disable-vhdx are also changed to a nop with a message saying it's obsolete. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com> Message-Id: <1474432046-325-4-git-send-email-famz@redhat.com>
2016-09-20blockdev: Modularize nfs block driverColin Lord
Modularizes the nfs block driver so that it gets dynamically loaded. Signed-off-by: Colin Lord <clord@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1471008424-16465-5-git-send-email-clord@redhat.com Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-09-15win32: don't run subprocess tests on Mingw32 platformEduardo Habkost
On Tue, Jun 14, 2016 at 04:44:57PM +0100, Daniel P. Berrange wrote: > The g_test_trap_subprocess() method does not work on the > Mingw32 platform, causing the test-qdev-global-props > test case to abort > > (test-logging.exe:230): GLib-ERROR **: g_test_trap_subprocess() > failed: Failed to execute helper program (No such file or directory) > > This failure was introduced a while ago in > > commit 2177801a4899bf29108b3d471417a5b4d701ec29 > Author: Eduardo Habkost <ehabkost@redhat.com> > Date: Fri Aug 8 16:03:27 2014 -0300 > > test-qdev-global-props: Run tests on subprocess > > Modify the configure time check to avoid enabling this feature > on Mingw, rather than trying to rewrite the test to avoid this > feature. I would do the following instead, just in case we have extra code looking at $glib_subprocess one day. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2016-09-15Remove remainders of HPPA backendThomas Huth
The HPPA backend has been removed by the following commit: 802b5081233a6b643a8b135a5facaf14bafaa77d tcg-hppa: Remove tcg backend But some small pieces of the HPPA backend still survived until today. Since we also do not have support for a HPPA target in QEMU, we can nowadays safely remove the remaining HPPA parts (like the disassembler code, or the detection of HPPA in the configure script). Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2016-09-15Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell
* minor patches here and there * MTTCG: lock-free TB lookup * SCSI: bugfixes for MPTSAS, MegaSAS, LSI53c, vmw_pvscsi * buffer_is_zero rewrite (except for one patch) * chardev: qemu_chr_fe_write checks * checkpatch improvement for markdown preformatted text * default-configs cleanups * atomics cleanups # gpg: Signature made Tue 13 Sep 2016 18:14:30 BST # gpg: using RSA key 0xBFFBD25F78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" # Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1 # Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83 * remotes/bonzini/tags/for-upstream: (58 commits) cutils: Add generic prefetch cutils: Add SSE4 version cutils: Add test for buffer_is_zero cutils: Remove ppc buffer zero checking cutils: Remove aarch64 buffer zero checking cutils: Rearrange buffer_is_zero acceleration cutils: Export only buffer_is_zero cutils: Remove SPLAT macro cutils: Move buffer_is_zero and subroutines to a new file ppc: do not redefine CPUPPCState x86/lapic: Load LAPIC state at post_load optionrom: do not rely on compiler's bswap optimization checkpatch: Fix whitespace checks for documentation code blocks atomics: Use __atomic_*_n() variant primitives atomics: Remove redundant barrier()'s kvm-all: drop kvm_setup_guest_memory i8257: Make device "i8257" unavailable with -device Revert "megasas: remove useless check for cmd->frame" char: convert qemu_chr_fe_write to qemu_chr_fe_write_all hw: replace most use of qemu_chr_fe_write with qemu_chr_fe_write_all ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Conflicts: cpus.c tests/Makefile.include
2016-09-13cutils: Rearrange buffer_is_zero accelerationRichard Henderson
Allow selection of several acceleration functions based on the size and alignment of the buffer. Do not require ifunc support for AVX2 acceleration. Signed-off-by: Richard Henderson <rth@twiddle.net> Message-Id: <1472496380-19706-5-git-send-email-rth@twiddle.net> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-09-13configure: Always compile with -fwrapvPeter Maydell
QEMU's code relies on left shifts of signed integers always being defined behaviour with the obvious 2s-complement semantics. The only way to tell the compiler (and any associated undefined-behaviour sanitizer) that we require a C dialect with these semantics is to use the -fwrapv option. This is a bit of a heavy hammer for the job as it also gives us guaranteed semantics on integer arithmetic overflow which in theory we don't require. In an ideal world this would allow us to drop the warning flag -Wno-shift-negative-value, but we must retain this to avoid spurious warnings on clang versions predating the fix to https://llvm.org/bugs/show_bug.cgi?id=25552. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Markus Armbruster <armbru@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1473685808-9629-1-git-send-email-peter.maydell@linaro.org
2016-09-13configure: support replicationChanglong Xie
configure --(enable/disable)-replication to switch replication support on/off, and it is on by default. We later introduce replation support. Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> Signed-off-by: Changlong Xie <xiecl.fnst@cn.fujitsu.com> Signed-off-by: Wang WeiWei <wangww.fnst@cn.fujitsu.com> Message-id: 1469602913-20979-8-git-send-email-xiecl.fnst@cn.fujitsu.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-09-10vhost-vsock: add virtio sockets deviceStefan Hajnoczi
Implement the new virtio sockets device for host<->guest communication using the Sockets API. Most of the work is done in a vhost kernel driver so that virtio-vsock can hook into the AF_VSOCK address family. The QEMU vhost-vsock device handles configuration and live migration while the rx/tx happens in the vhost_vsock.ko Linux kernel driver. The vsock device must be given a CID (host-wide unique address): # qemu -device vhost-vsock-pci,id=vhost-vsock-pci0,guest-cid=3 ... For more information see: http://qemu-project.org/Features/VirtioVsock [Endianness fixes and virtio-ccw support by Claudio Imbrenda <imbrenda@linux.vnet.ibm.com>] Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> [mst: rebase to master] Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-09-05trace: add syslog tracing backendPaul Durrant
This patch adds a tracing backend which sends output using syslog(). The syslog backend is limited to POSIX compliant systems. openlog() is called with facility set to LOG_DAEMON, with the LOG_PID option. Trace events are logged at level LOG_INFO. Signed-off-by: Paul Durrant <paul.durrant@citrix.com> Message-id: 1470318254-29989-1-git-send-email-paul.durrant@citrix.com Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-08-15pc-bios/optionrom: Fix OpenBSD build with better detection of linker emulationPeter Maydell
The various host OSes are irritatingly variable about the name of the linker emulation we need to pass to ld's -m option to build the i386 option ROMs. Instead of doing this via a CONFIG ifdef, check in configure whether any of the emulation names we know about will work and pass the right answer through to the makefile. If we can't find one, we fall back to not trying to build the option ROMs, in the same way we would for a non-x86 host platform. This is in particular necessary to unbreak the build on OpenBSD, since it wants a different answer to FreeBSD and we don't have an existing CONFIG_ variable that distinguishes the two. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Sean Bruno <sbruno@freebsd.org> Message-id: 1470672688-6754-1-git-send-email-peter.maydell@linaro.org
2016-08-09Disable warn about left shifts of negative valuesPranith Kumar
It seems like there's no good reason for the compiler to exploit the undefinedness of left shifts. GCC explicitly documents that they do not use at all this possibility and, while they also say this is subject to change, they have been saying this for 10 years (since the wording appeared in the GCC 4.0 manual). Disable these warnings by passing in -Wno-shift-negative-value. Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Markus Armbruster <armbru@redhat.com> Cc: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> [pranith: forward-port part of patch to 2.7] Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
2016-07-29avx2 configure: Disable if static buildAaron Lindsay
This avoids a segfault like the following for at least some 4.8 versions of gcc when configured with --static if avx2 instructions are also enabled: Program received signal SIGSEGV, Segmentation fault. buffer_find_nonzero_offset_ifunc () at ./util/cutils.c:333 333 { (gdb) bt #0 buffer_find_nonzero_offset_ifunc () at ./util/cutils.c:333 #1 0x0000000000939c58 in __libc_start_main () #2 0x0000000000419337 in _start () Signed-off-by: Aaron Lindsay <alindsay@codeaurora.org> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-07-25configure: mark qemu-ga VSS includes as system headersMichael Roth
As of e4650c81, we do w32 builds with -Werror enabled. Unfortunately for cases where we enable VSS support in qemu-ga, we still have warnings generated by VSS includes that ship as part of the Microsoft VSS SDK. We can selectively address a number of these warnings using #pragma GCC diagnostic ignored ... but at least one of these: warning: ‘typedef’ was ignored in this declaration resulting from declarations of the form: typedef struct Blah { ... }; does not provide a specific command-line/pragma option to disable warnings of the sort. To allow VSS builds to succeed, the next-best option is disabling these warnings on a per-file basis. pragmas like #pragma GCC system_header can be used to declare subsequent includes/declarations as being exempt from normal warnings, but this must be done within a header file. Since we don't control the VSS SDK, we'd need to rely on a intermediate header include to accomplish this, and since different objects in the VSS link target rely on different headers from the VSS SDK, this would become somewhat of a rat's nest (though not totally unmanageable). The next step up in granularity is just marking the entire VSS SDK include path as system headers via -isystem. This is a bit more heavy-handed, but since this SDK hasn't changed since 2005, there's likely little to be gained from selectively disabling warnings anyway, so we implement that approach here. This fixes the -Werror failures in both the configure test and the qga build due to shared reliance on $vss_win32_include. For the same reason, this also enforces a new dependency on -isystem support in the C/C++ compiler when building QGA with VSS enabled. Cc: Thomas Huth <thuth@redhat.com> Cc: Stefan Weil <sw@weilnetz.de> Cc: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2016-07-25build-sys: link tests/dataMarc-André Lureau
Link a common tests data directory to the build directory. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2016-07-22tests: introduce a framework for testing migration performanceDaniel P. Berrange
This introduces a moderately general purpose framework for testing performance of migration. The initial guest workload is provided by the included 'stress' program, which is configured to spawn one thread per guest CPU and run a maximally memory intensive workload. It will loop over GB of memory, xor'ing each byte with data from a 4k array of random bytes. This ensures heavy read and write load across all of guest memory to stress the migration performance. While running the 'stress' program will record how long it takes to xor each GB of memory and print this data for later reporting. The test engine will spawn a pair of QEMU processes, either on the same host, or with the target on a remote host via ssh, using the host kernel and a custom initrd built with 'stress' as the /init binary. Kernel command line args are set to ensure a fast kernel boot time (< 1 second) between launching QEMU and the stress program starting execution. None the less, the test engine will initially wait N seconds for the guest workload to stablize, before starting the migration operation. When migration is running, the engine will use pause, post-copy, autoconverge, xbzrle compression and multithread compression features, as well as downtime & bandwidth tuning to encourage completion. If migration completes, the test engine will wait N seconds again for the guest workooad to stablize on the target host. If migration does not complete after a preset number of iterations, it will be aborted. While the QEMU process is running on the source host, the test engine will sample the host CPU usage of QEMU as a whole, and each vCPU thread. While migration is running, it will record all the stats reported by 'query-migration'. Finally, it will capture the output of the stress program running in the guest. All the data produced from a single test execution is recorded in a structured JSON file. A separate program is then able to create interactive charts using the "plotly" python + javascript libraries, showing the characteristics of the migration. The data output provides visualization of the effect on guest vCPU workloads from the migration process, the corresponding vCPU utilization on the host, and the overall CPU hit from QEMU on the host. This is correlated from statistics from the migration process, such as downtime, vCPU throttling and iteration number. While the tests can be run individually with arbitrary parameters, there is also a facility for producing batch reports for a number of pre-defined scenarios / comparisons, in order to be able to get standardized results across different hardware configurations (eg TCP vs RDMA, or comparing different VCPU counts / memory sizes, etc). To use this, first you must build the initrd image $ make tests/migration/initrd-stress.img To run a a one-shot test with all default parameters $ ./tests/migration/guestperf.py > result.json This has many command line args for varying its behaviour. For example, to increase the RAM size and CPU count and bind it to specific host NUMA nodes $ ./tests/migration/guestperf.py \ --mem 4 --cpus 2 \ --src-mem-bind 0 --src-cpu-bind 0,1 \ --dst-mem-bind 1 --dst-cpu-bind 2,3 \ > result.json Using mem + cpu binding is strongly recommended on NUMA machines, otherwise the guest performance results will vary wildly between runs of the test due to lucky/unlucky NUMA placement, making sensible data analysis impossible. To make it run across separate hosts: $ ./tests/migration/guestperf.py \ --dst-host somehostname > result.json To request that post-copy is enabled, with switchover after 5 iterations $ ./tests/migration/guestperf.py \ --post-copy --post-copy-iters 5 > result.json Once a result.json file is created, a graph of the data can be generated, showing guest workload performance per thread and the migration iteration points: $ ./tests/migration/guestperf-plot.py --output result.html \ --migration-iters --split-guest-cpu result.json To further include host vCPU utilization and overall QEMU utilization $ ./tests/migration/guestperf-plot.py --output result.html \ --migration-iters --split-guest-cpu \ --qemu-cpu --vcpu-cpu result.json NB, the 'guestperf-plot.py' command requires that you have the plotly python library installed. eg you must do $ pip install --user plotly Viewing the result.html file requires that you have the plotly.min.js file in the same directory as the HTML output. This js file is installed as part of the plotly python library, so can be found in $HOME/.local/lib/python2.7/site-packages/plotly/offline/plotly.min.js The guestperf-plot.py program can accept multiple json files to plot, enabling results from different configurations to be compared. Finally, to run the entire standardized set of comparisons $ ./tests/migration/guestperf-batch.py \ --dst-host somehost \ --mem 4 --cpus 2 \ --src-mem-bind 0 --src-cpu-bind 0,1 \ --dst-mem-bind 1 --dst-cpu-bind 2,3 --output tcp-somehost-4gb-2cpu will store JSON files from all scenarios in the directory named tcp-somehost-4gb-2cpu Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-Id: <1469020993-29426-7-git-send-email-berrange@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
2016-07-10build: Use $(AS) for optionrom explicitlyRichard Henderson
For clang before 3.5, -fno-integrated-as does not exist, so the workaround in 5f6f0e27fb24 fails to build. Use clang's default assembler for linux-user/safe-syscall.S, and explicitly change to use the system assembler for the option roms. Tested-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2016-07-05build: Use $(CCAS) for compiling .S filesRichard Henderson
We fail to pass to $(AS) all of the different flags that may be required for a given set of CFLAGS. Rather than figuring out the host-specific mapping, it's better to allow the compiler driver to do that. However, simply using $(CC) runs afoul of clang trying to build the option roms. C.f. 3dd46c78525a30e98c68, wherein we changed from using $(CC) to using $(AS) in the first place. Work around this by passing -fno-integrated-as to clang, so that we use the external assembler, and the clang driver still passes along all of the options that the assembler might require. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net> Message-Id: <1466703558-7723-1-git-send-email-rth@twiddle.net>
2016-07-04crypto: allow default TLS priority to be chosen at build timeDaniel P. Berrange
Modern gnutls can use a global config file to control the crypto priority settings for TLS connections. For example the priority string "@SYSTEM" instructs gnutls to find the priority setting named "SYSTEM" in the global config file. Latest gnutls GIT codebase gained the ability to reference multiple priority strings in the config file, with the first one that is found to existing winning. This means it is now possible to configure QEMU out of the box with a default priority of "@QEMU,SYSTEM", which says to look for the settings "QEMU" first, and if not found, use the "SYSTEM" settings. To make use of this facility, we introduce the ability to set the QEMU default priority at build time via a new configure argument. It is anticipated that distro vendors will set this when building QEMU to a suitable value for use with distro crypto policy setup. eg current Fedora would run ./configure --tls-priority=@SYSTEM while future Fedora would run ./configure --tls-priority=@QEMU,SYSTEM Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2016-07-04crypto: switch hash code to use nettle/gcrypt directlyDaniel P. Berrange
Currently the internal hash code is using the gnutls hash APIs. GNUTLS in turn is wrapping either nettle or gcrypt. Not only were the GNUTLS hash APIs not added until GNUTLS 2.9.10, but they don't expose support for all the algorithms QEMU needs to use with LUKS. Address this by directly wrapping nettle/gcrypt in QEMU and avoiding GNUTLS's extra layer of indirection. This gives us support for hash functions on a much wider range of platforms and opens up ability to support more hash functions. It also avoids a GNUTLS bug which would not correctly handle hashing of large data blocks if int != size_t. Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2016-06-29Merge remote-tracking branch 'remotes/riku/tags/pull-linux-user-20160628' ↵Peter Maydell
into staging Drop building linux-user targets on HPPA or m68k host systems and add safe_syscall support for i386, aarch64, arm, ppc64 and s390x. # gpg: Signature made Tue 28 Jun 2016 19:31:16 BST # gpg: using RSA key 0xB44890DEDE3C9BC0 # gpg: Good signature from "Riku Voipio <riku.voipio@iki.fi>" # gpg: aka "Riku Voipio <riku.voipio@linaro.org>" # Primary key fingerprint: FF82 03C8 C391 98AE 0581 41EF B448 90DE DE3C 9BC0 * remotes/riku/tags/pull-linux-user-20160628: (24 commits) linux-user: Provide safe_syscall for ppc64 linux-user: Provide safe_syscall for s390x linux-user: Provide safe_syscall for aarch64 linux-user: Provide safe_syscall for arm linux-user: Provide safe_syscall for i386 linux-user: fix x86_64 safe_syscall linux-user: don't swap NLMSG_DATA() fields linux-user: fd_trans_host_to_target_data() must process only received data linux-user: add missing return in netlink switch statement linux-user: update get_thread_area/set_thread_area strace linux-user: fix clone() strace linux-user: add socket() strace linux-user: add socketcall() strace linux-user: Support F_GETPIPE_SZ and F_SETPIPE_SZ fcntls linux-user: Fix wrong type used for argument to rt_sigqueueinfo linux-user: Create a hostdep.h for each host architecture user-exec: Remove unused code for OSX hosts user-exec: Delete now-unused hppa and m68k cpu_signal_handler() code configure: Don't allow user-only targets for unknown CPU architectures configure: Don't override ARCH=unknown if enabling TCI ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-06-28configure: Make AVX2 test robust to non-ELF systemsPeter Maydell
The AVX2 optimization test assumes that the object format is ELF and the system has the readelf utility. If this isn't true then configure might fail or emit a warning (since in a pipe "foo | bar >/dev/null 2>&1" does not redirect the stderr of foo, only of bar). Adjust the check so that if we don't have readelf or don't have an ELF object then we just don't enable the AVX2 optimization. Reported-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Stefan Weil <sw@weilnetz.de> Message-id: 1466287502-18730-3-git-send-email-pmaydell@chiark.greenend.org.uk
2016-06-28configure: Improve usermode relocation linker option probePeter Maydell
The probe we do to determine what flags to use to make the usermode executables use a non-default text address has some flaws: * we run it even if we're not building the user binaries * we don't expect "ld --verbose" to fail The combination of these two results in a harmless but ugly "ld: unknown option: --verbose" message when running configure on OSX. Improve the probe to only run when we need it and to fail nicely when even the backstop 'ld --verbose' approach fails. Reported-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Stefan Weil <sw@weilnetz.de> Message-id: 1466287502-18730-2-git-send-email-pmaydell@chiark.greenend.org.uk
2016-06-26configure: Don't allow user-only targets for unknown CPU architecturesPeter Maydell
For the user-only targets, we need to know something about the host CPU architecture even if we are using the TCI interpreter rather than TCG. (In particular user-exec.c has code for handling signals that needs to know about that host's context structures.) Specifically forbid building the user-only targets on unknown CPU architectures, rather than allowing them to configure but then fail when building user-exec.c. This change drops supports for two configurations which were theoretically possible before: * linux-user targets on M68K hosts using TCI * linux-user targets on HPPA hosts using TCI We don't think anybody is actually trying to use these in practice, though: * interpreted TCG on a slow host CPU would be unusably slow * the m68k user-exec.c support is missing is_write detection so guest code which writes to the same page it is executing from was broken (will include any guest program using signals) * HPPA TCG backend support was dropped two and a half years ago with no complaints Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2016-06-26configure: Don't override ARCH=unknown if enabling TCIPeter Maydell
At the moment if configure finds an unknown CPU it will set ARCH to 'unknown', and then later either bail out or set it to 'tci' (depending on whether the user passed configure the --enable-tcg-interpreter switch). This is unnecessarily confusing, because we could be using TCI in two cases: * a known host architecture (in which case ARCH is set to the actual host architecture, like 'i386') * an unknown host architecture (in which case ARCH is set to 'tci') so nothing can rely on ARCH=tci to mean "using TCI". Remove the line setting ARCH, so we leave it as "unknown", which is what the actual situation is. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2016-06-20seccomp: Add support for ppc/ppc64Michael Strosaker
Support for ppc/ppc64 is official in libseccomp 2.3.0, so modify the configuration script to allow qemuu to enable seccomp for those platforms. Signed-off-by: Michael Strosaker <strosake@linux.vnet.ibm.com>
2016-06-16configure: Remove unused CONFIG_SIGEV_THREAD_ID switchThomas Huth
The CONFIG_SIGEV_THREAD_ID switch is unused since the related code has been removed by commit 6d327171551a12b937c5718073b9848d0274c74d ("aio / timers: Remove alarm timers"), so it can safely be removed nowadays. Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <1465571084-19885-1-git-send-email-thuth@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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