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2018-03-13target/m68k: implement fcoshLaurent Vivier
Using a local m68k floatx80_cosh() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180312202728.23790-12-laurent@vivier.eu>
2018-03-13target/m68k: implement fsinhLaurent Vivier
Using a local m68k floatx80_sinh() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180312202728.23790-11-laurent@vivier.eu>
2018-03-13target/m68k: implement ftanhLaurent Vivier
Using local m68k floatx80_tanh() and floatx80_etoxm1() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180312202728.23790-10-laurent@vivier.eu>
2018-03-13target/m68k: implement fatanhLaurent Vivier
Using a local m68k floatx80_atanh() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180312202728.23790-9-laurent@vivier.eu>
2018-03-13target/m68k: implement facosLaurent Vivier
Using a local m68k floatx80_acos() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180312202728.23790-8-laurent@vivier.eu>
2018-03-13target/m68k: implement fasinLaurent Vivier
Using a local m68k floatx80_asin() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180312202728.23790-7-laurent@vivier.eu>
2018-03-13target/m68k: implement fatanLaurent Vivier
Using a local m68k floatx80_atan() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180312202728.23790-6-laurent@vivier.eu>
2018-03-13target/m68k: implement fsincosLaurent Vivier
using floatx80_sin() and floatx80_cos() Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180312202728.23790-5-laurent@vivier.eu>
2018-03-13target/m68k: implement fcosLaurent Vivier
Using a local m68k floatx80_cos() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180312202728.23790-4-laurent@vivier.eu>
2018-03-13target/m68k: implement fsinLaurent Vivier
Using a local m68k floatx80_sin() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180312202728.23790-3-laurent@vivier.eu>
2018-03-13target/m68k: implement ftanLaurent Vivier
Using a local m68k floatx80_tan() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180312202728.23790-2-laurent@vivier.eu>
2018-03-13linux-user: init_guest_space: Add a comment about search strategyLuke Shumaker
Signed-off-by: Luke Shumaker <lukeshu@parabola.nu> Message-Id: <20171228180814.9749-10-lukeshu@lukeshu.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-03-13Merge remote-tracking branch 'remotes/ehabkost/tags/x86-next-pull-request' ↵Peter Maydell
into staging x86 queue, 2018-03-12 * Intel Processor Trace support * KVM_HINTS_DEDICATED # gpg: Signature made Mon 12 Mar 2018 19:58:39 GMT # gpg: using RSA key 2807936F984DC5A6 # gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" # Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6 * remotes/ehabkost/tags/x86-next-pull-request: i386: Add support to get/set/migrate Intel Processor Trace feature i386: Add Intel Processor Trace feature support target-i386: add KVM_HINTS_DEDICATED performance hint Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-03-13linux-user: init_guest_space: Don't try to align if we'll reject itLuke Shumaker
If the ensure-alignment code gets triggered, then the "if (host_start && real_start != current_start)" check will always trigger, so save 2 syscalls and put that check first. Note that we can't just switch to using MAP_FIXED for that check, because then we couldn't differentiate between a failure because "there isn't enough space" and "there isn't enough space *here*". Signed-off-by: Luke Shumaker <lukeshu@parabola.nu> Message-Id: <20171228180814.9749-9-lukeshu@lukeshu.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-03-13linux-user: init_guest_space: Clean up control flow a bitLuke Shumaker
Instead of doing if (check1) { if (check2) { success; } } retry; Do a clearer if (!check1) { goto try_again; } if (!check2) { goto try_again; } success; try_again: retry; Besides being clearer, this makes it easier to insert more checks that need to trigger a retry on check failure, or rearrange them, or anything like that. Because some indentation is changing, "ignore space change" may be useful for viewing this patch. Signed-off-by: Luke Shumaker <lukeshu@parabola.nu> Message-Id: <20171228180814.9749-8-lukeshu@lukeshu.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> [lv: modified to try again fi valid == 0, not valid == -1 (error case)] Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-03-13block: include original filename when reporting invalid URIsDaniel P. Berrangé
Consider passing a JSON based block driver to "qemu-img commit" $ qemu-img commit 'json:{"driver":"qcow2","file":{"driver":"gluster",\ "volume":"gv0","path":"sn1.qcow2", "server":[{"type":\ "tcp","host":"10.73.199.197","port":"24007"}]},}' Currently it will commit the content and then report an incredibly useless error message when trying to re-open the committed image: qemu-img: invalid URI Usage: file=gluster[+transport]://[host[:port]]volume/path[?socket=...][,file.debug=N][,file.logfile=/path/filename.log] With this fix we get: qemu-img: invalid URI json:{"server.0.host": "10.73.199.197", "driver": "gluster", "path": "luks.qcow2", "server.0.type": "tcp", "server.0.port": "24007", "volume": "gv0"} Of course the root cause problem still exists, but now we know what actually needs fixing. Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 20180206105204.14817-1-berrange@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2018-03-13Merge remote-tracking branch 'remotes/famz/tags/staging-pull-request' into ↵Peter Maydell
staging docker patches # gpg: Signature made Mon 12 Mar 2018 17:25:57 GMT # gpg: using RSA key CA35624C6A9171C6 # gpg: Good signature from "Fam Zheng <famz@redhat.com>" # Primary key fingerprint: 5003 7CB7 9706 0F76 F021 AD56 CA35 624C 6A91 71C6 * remotes/famz/tags/staging-pull-request: tests: make docker-test-debug@fedora run sanitizers Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-03-13include: add psp-sev.h header fileBrijesh Singh
The header file provide the ioctl command and structure to communicate with /dev/sev device. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
2018-03-13sev/i386: qmp: add query-sev commandBrijesh Singh
The QMP query command can used to retrieve the SEV information when memory encryption is enabled on AMD platform. Cc: Eric Blake <eblake@redhat.com> Cc: "Daniel P. Berrangé" <berrange@redhat.com> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Cc: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-03-13target/i386: add Secure Encrypted Virtualization (SEV) objectBrijesh Singh
Add a new memory encryption object 'sev-guest'. The object will be used to create encrypted VMs on AMD EPYC CPU. The object provides the properties to pass guest owner's public Diffie-hellman key, guest policy and session information required to create the memory encryption context within the SEV firmware. e.g to launch SEV guest # $QEMU \ -object sev-guest,id=sev0 \ -machine ....,memory-encryption=sev0 Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-03-13kvm: introduce memory encryption APIsBrijesh Singh
Inorder to integerate the Secure Encryption Virtualization (SEV) support add few high-level memory encryption APIs which can be used for encrypting the guest memory region. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: kvm@vger.kernel.org Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-03-13kvm: add memory encryption contextBrijesh Singh
Split from a patch by Brijesh Singh (brijesh.singh@amd.com). Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
2018-03-13docs: add AMD Secure Encrypted Virtualization (SEV)Brijesh Singh
Create a documentation entry to describe the AMD Secure Encrypted Virtualization (SEV) feature. Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-03-13machine: add memory-encryption optionBrijesh Singh
When CPU supports memory encryption feature, the property can be used to specify the encryption object to use when launching an encrypted guest. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Marcel Apfelbaum <marcel@redhat.com> Cc: Stefan Hajnoczi <stefanha@gmail.com> Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-03-13KVM: x86: Add support for save/load MSR_SMI_COUNTLiran Alon
This MSR returns the number of #SMIs that occurred on CPU since boot. KVM commit 52797bf9a875 ("KVM: x86: Add emulation of MSR_SMI_COUNT") introduced support for emulating this MSR. This commit adds support for QEMU to save/load this MSR for migration purposes. Signed-off-by: Liran Alon <liran.alon@oracle.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-03-13update Linux headers to 4.16-rc5Paolo Bonzini
Note that VIRTIO_GPU_CAPSET_VIRGL2 was added manually so it has to be added manually after re-running scripts/update-linux-headers.sh. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-03-13Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into ↵Peter Maydell
staging # gpg: Signature made Mon 12 Mar 2018 16:01:16 GMT # gpg: using RSA key 9CA4ABB381AB73C8 # gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" # gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>" # Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35 775A 9CA4 ABB3 81AB 73C8 * remotes/stefanha/tags/block-pull-request: block: make BDRV_POLL_WHILE() re-entrancy safe Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-03-13Merge remote-tracking branch 'remotes/stefanha/tags/tracing-pull-request' ↵Peter Maydell
into staging # gpg: Signature made Mon 12 Mar 2018 15:59:54 GMT # gpg: using RSA key 9CA4ABB381AB73C8 # gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" # gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>" # Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35 775A 9CA4 ABB3 81AB 73C8 * remotes/stefanha/tags/tracing-pull-request: trace: only permit standard C types and fixed size integer types trace: remove use of QEMU specific types from trace probes trace: include filename when printing parser error messages simpletrace: fix timestamp argument type log-for-trace.h: Split out parts of log.h used by trace.h Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-03-12device-crash-test: Use 'python' binaryEduardo Habkost
Now the script works with Python 3, so we can use the 'python' binary provided by the system. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <20180312185503.5746-4-ehabkost@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2018-03-12qmp.py: Encode json data before sendingEduardo Habkost
On Python 3, json.dumps() return a str object, which can't be sent directly through a socket and must be encoded into a bytes object. Use .encode('utf-8'), which will work on both Python 2 and Python 3. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <20180312185503.5746-3-ehabkost@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2018-03-12qemu.py: Use items() instead of iteritems()Eduardo Habkost
items() is less efficient on Python 2.x, but makes the code work on both Python 2 and Python 3. Cc: Lukáš Doktor <ldoktor@redhat.com> Cc: Philippe Mathieu-Daudé <f4bug@amsat.org> Cc: Cleber Rosa <crosa@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <20180312185503.5746-2-ehabkost@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2018-03-12device-crash-test: New known crashesEduardo Habkost
We are not running the script on "make check" yet, and additional bugs were introduced recently in the tree. Whitelist the new crashes while we investigate, to allow us to run device-crash-test on "make check" as soon as possible to prevent new bugs. Cc: Pavel Pisa <pisa@cmp.felk.cvut.cz> Cc: John Snow <jsnow@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <20180309202827.12085-5-ehabkost@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2018-03-12Merge remote-tracking branch 'remotes/kraxel/tags/usb-20180312-pull-request' ↵Peter Maydell
into staging usbredir: reorder fields in USBRedirDevice to reduce padding # gpg: Signature made Mon 12 Mar 2018 11:05:19 GMT # gpg: using RSA key 4CB6D8EED3E87138 # 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/usb-20180312-pull-request: usbredir: reorder fields in USBRedirDevice to reduce padding Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-03-12i386: Add support to get/set/migrate Intel Processor Trace featureChao Peng
Add Intel Processor Trace related definition. It also add corresponding part to kvm_get/set_msr and vmstate. Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com> Signed-off-by: Luwei Kang <luwei.kang@intel.com> Message-Id: <1520182116-16485-2-git-send-email-luwei.kang@intel.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2018-03-12i386: Add Intel Processor Trace feature supportChao Peng
Expose Intel Processor Trace feature to guest. To make Intel PT live migration safe and get same CPUID information with same CPU model on diffrent host. CPUID[14] is constant in this patch. Intel PT use EPT is first supported in IceLake, the CPUID[14] get on this machine as default value. Intel PT would be disabled if any machine don't support this minial feature list. Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com> Signed-off-by: Luwei Kang <luwei.kang@intel.com> Message-Id: <1520182116-16485-1-git-send-email-luwei.kang@intel.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2018-03-12target-i386: add KVM_HINTS_DEDICATED performance hintWanpeng Li
Add KVM_HINTS_DEDICATED performance hint, guest checks this feature bit to determine if they run on dedicated vCPUs, allowing optimizations such as usage of qspinlocks. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Wanpeng Li <wanpengli@tencent.com> Message-Id: <1518185725-69559-1-git-send-email-wanpengli@tencent.com> [ehabkost: Renamed property to kvm-hint-dedicated] Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2018-03-12Merge remote-tracking branch 'remotes/kraxel/tags/vga-20180312-pull-request' ↵Peter Maydell
into staging 7cdc61becd vga: fix region calculation # gpg: Signature made Mon 12 Mar 2018 10:59:24 GMT # gpg: using RSA key 4CB6D8EED3E87138 # 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/vga-20180312-pull-request: vga: fix region calculation Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-03-13tests: make docker-test-debug@fedora run sanitizersMarc-André Lureau
Since --enable-debug no longer enable sanitizers, we need explicit --enable-sanitizers. llvm package is required for llvm-symbolizer, to get symbols in backtraces. Add make V=1 to get details about failing tests. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20180312120849.20073-1-marcandre.lureau@redhat.com> Signed-off-by: Fam Zheng <famz@redhat.com>
2018-03-12Merge remote-tracking branch ↵Peter Maydell
'remotes/kraxel/tags/audio-20180312-pull-request' into staging modules: use gmodule-export. audio: add driver registry, enable module builds. # gpg: Signature made Mon 12 Mar 2018 10:42:19 GMT # gpg: using RSA key 4CB6D8EED3E87138 # 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/audio-20180312-pull-request: audio/sdl: build as module audio/pulseaudio: build as module audio/oss: build as module audio/alsa: build as module build: enable audio modules audio: add module loading support audio: add driver registry modules: use gmodule-export Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-03-12tcg: fix cpu_io_recompilePavel Dovgalyuk
cpu_io_recompile() function was broken by the commit 9b990ee5a3cc6aa38f81266fb0c6ef37a36c45b9. Instead of regenerating the block starting from PC of the original block, it just set the instruction counter for TCG. In most cases this was unnoticed, but in icount mode there was an exception for incorrect usage of CF_LAST_IO flag. This patch recovers recompilation of the original block and also configures translation for executing single IO instruction which caused a recompilation. Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru> Message-Id: <20180227095338.1060.27385.stgit@pasha-VirtualBox> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
2018-03-12replay: update documentationPavel Dovgalyuk
This patch clarifies the description of the record/replay feature in docs/replay.txt Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru> Message-Id: <20180227095333.1060.1331.stgit@pasha-VirtualBox> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
2018-03-12replay: save vmstate of the asynchronous eventsPavel Dovgalyuk
This patch fixes saving and loading the snapshots in the replay mode. It is required for the snapshots created in the moment when the header of the asynchronous event is read. This information was not saved in the snapshot. After loading the vmstate replay continued with the file offset passed the event header. The event header is lost in this case and replay hangs. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> Message-Id: <20180227095322.1060.53929.stgit@pasha-VirtualBox> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-03-12replay: don't process async events when warping the clockPavel Dovgalyuk
Virtual clock is warped from iothread and vcpu thread. When the hardware events associated with warp checkpoint, then interrupt delivering may be non-deterministic if checkpoint is processed in different threads in record and replay. This patch disables event processing for clock warp checkpoint and leaves all hardware events to other checkpoints (e.g., virtual clock). Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru> Message-Id: <20180227095316.1060.4134.stgit@pasha-VirtualBox> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
2018-03-12scripts/replay-dump.py: replay log dumperAlex Bennée
This script is a debugging tool for looking through the contents of a replay log file. It is incomplete but should fail gracefully at events it doesn't understand. It currently understands two different log formats as the audio record/replay support was merged during since MTTCG. It was written to help debug what has caused the BQL changes to break replay support. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20180227095310.1060.14500.stgit@pasha-VirtualBox> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-03-12replay: avoid recursive call of checkpointsPavel Dovgalyuk
This patch adds a flag which denies recursive call of replay_checkpoint function. Checkpoints may be accompanied by the hardware events. When event is processed, virtual device may invoke timer modification functions that also invoke the checkpoint function. This leads to infinite loop. Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru> Message-Id: <20180227095305.1060.56463.stgit@pasha-VirtualBox> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
2018-03-12replay: check return values of fwritePavel Dovgalyuk
This patch adds error reporting when fwrite cannot completely save the buffer to the file. Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru> Message-Id: <20180227095259.1060.86410.stgit@pasha-VirtualBox> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
2018-03-12replay: push replay_mutex_lock up the call treeAlex Bennée
Now instead of using the replay_lock to guard the output of the log we now use it to protect the whole execution section. This replaces what the BQL used to do when it was held during TCG execution. We also introduce some rules for locking order - mainly that you cannot take the replay_mutex while holding the BQL. This leads to some slight sophistry during start-up and extending the replay_mutex_destroy function to unlock the mutex without checking for the BQL condition so it can be cleanly dropped in the non-replay case. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru> Tested-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru> Message-Id: <20180227095248.1060.40374.stgit@pasha-VirtualBox> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2018-03-12replay: don't destroy mutex at exitPavel Dovgalyuk
Replay mutex is held by vCPU thread and destroy function is called from atexit of the main thread. Therefore we cannot destroy it safely. Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20180227095254.1060.96971.stgit@pasha-VirtualBox> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
2018-03-12replay: make locking visible outside replay codeAlex Bennée
The replay_mutex_lock/unlock/locked functions are now going to be used for ensuring lock-step behaviour between the two threads. Make them public API functions and also provide stubs for non-QEMU builds on common paths. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru> Message-Id: <20180227095242.1060.16601.stgit@pasha-VirtualBox> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-03-12replay/replay-internal.c: track holding of replay_lockAlex Bennée
This is modelled after the iothread mutex lock. We keep a TLS flag to indicate when that thread has acquired the lock and assert we don't double-lock or release when we shouldn't have. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Tested-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru> Message-Id: <20180227095237.1060.44661.stgit@pasha-VirtualBox> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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