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2012-10-28tcg: add tcg_reg_sync()Aurelien Jarno
Add a new function tcg_reg_sync() to synchronize the canonical location of a temp with the value in the associated register, but without freeing it. Rewrite tcg_reg_free() to first call tcg_reg_sync() and then to free the register. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-10-28tcg: add temp_dead()Aurelien Jarno
A lot of code is duplicated to mark a temporary as dead. Replace it by temp_dead(), which in addition marks the temp as saved in memory for globals and local temps, instead of doing this a posteriori in temp_save(). Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-10-28tcg/i386: remove ld/st third argument register constraintAurelien Jarno
On x86_64, remove the constraint on the third argument register which is not needed: - For loads the helper arguments are env, addr, mem_idx. The addr value should not be in the two first argument registers as they are used in tcg_out_tlb_load(). - For stores the helper arguments are env, addr, data, mem_idx. The addr and data values should not be in the two first argument registers as they are used in tcg_out_tlb_load(). The data value should also not be in the two first argument registers, but could be in the third argument register in which case it would be already loaded at the right location. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-10-28tcg/i386: remove suboptimal register shiftingAurelien Jarno
Now that CONFIG_TCG_PASS_AREG0 has been removed, it's easier to get an optimal code for the load/store functions. First swap the two registers used in tcg_out_tlb_load() so that the address end-up in the second register instead of the first one. Adjust tcg_out_qemu_ld() and tcg_out_qemu_st() to respectively call tcg_out_qemu_ld_direct() and tcg_out_qemu_st_direct() with the correct registers. Then replace the register shifting by direct load of the arguments. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-10-27hw/xtensa_sim: get rid of intermediate xtensa_sim_initMax Filippov
Remove xtensa_sim_init that only explodes machine init args, rename sim_init to xtensa_sim_init. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-10-27hw/xtensa_lx60: don't prematurely explode QEMUMachineInitArgsMax Filippov
Don't explode QEMUMachineInitArgs before passing it to lx_init. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-10-27Makefile: Forbid out-of-tree build from a source tree that has been built inPeter Maydell
If we try to do an out-of-tree build but the source tree we're building from has been used in the past for an in-tree build then things will go confusingly wrong. Specifically, some parts of the build process will pull in generated files from the old in-tree build (because SRC_PATH is on the vpath). Diagnose this situation so we can produce a useful error message and tell the user how to fix it (run distclean in the source tree). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-10-27tests/tcg: fix a few warningsCatalin Patulea
Signed-off-by: Catalin Patulea <catalinp@google.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-10-27target-sparc64: disable VGA cirrusAurelien Jarno
OpenBIOS on sparc64 only support Standard VGA and not Cirrus VGA. Don't build Cirrus VGA support so that it can't be selected. This fixes the breakage introduced by commit f2898771. Reported-by: Richard Henderson <rth@twiddle.net> Cc: Blue Swirl <blauwirbel@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Tested-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-10-27Merge branch 'target-arm.for-upstream' of ↵Blue Swirl
git://git.linaro.org/people/pmaydell/qemu-arm * 'target-arm.for-upstream' of git://git.linaro.org/people/pmaydell/qemu-arm: target-arm: Remove out of date FIXME regarding saturating arithmetic target-arm: Implement abs_i32 inline rather than as a helper target-arm: Use TCG operation for Neon 64 bit negation arm-semi.c: Handle get/put_user() failure accessing arguments
2012-10-27configure: avoid compiler warning in pipe2 detectionBruce Rogers
When building qemu-kvm for openSUSE:Factory, I am getting a warning in the pipe2 detection performed by configure, which prevents using --enable-werror. Change detection code to use return value of pipe2. Signed-off-by: Bruce Rogers <brogers@suse.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-10-27configure: Disable (clang) initializer-overrides warningsPeter Maydell
Disable clang's initializer-overrides warnings, as QEMU makes significant use of the pattern of initializing an array with a range-based default entry like [0 ... 0x1ff] = { GPIO_NONE, 0 } followed by specific entries which override that default, and clang would otherwise warn "initializer overrides prior initialization of this subobject" when it encountered the specific entry. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-10-24win32: fix broken build due to missing QEMU_MADV_HUGEPAGELuiz Capitulino
Commit ad0b5321f1f797274603ebbe20108b0750baee94 forgot to add QEMU_MADV_HUGEPAGE macros for when CONFIG_MADVISE is not defined. This broke the build for Windows. Fix it. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-10-24Merge remote-tracking branch 'bonzini/nbd-next' into stagingAnthony Liguori
* bonzini/nbd-next: (30 commits) qmp: add NBD server commands block: add close notifiers block: prepare code for adding block notifiers qemu-sockets: add socket_listen, socket_connect, socket_parse tests: do not include tools-obj-y Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> qemu-sockets: return InetSocketAddress from inet_parse qapi: add socket address types build: add QAPI files to the tools vnc: drop QERR_VNC_SERVER_FAILED qemu-sockets: add error propagation to Unix socket functions qemu-sockets: add error propagation to inet_parse qemu-sockets: add error propagation to inet_dgram_opts qemu-sockets: add error propagation to inet_connect_addr qemu-sockets: include strerror or gai_strerror output in error messages vnc: add error propagation to vnc_display_open vnc: reorganize code for reverse mode vnc: introduce a single label for error returns vnc: avoid Yoda conditionals qemu-ga: ask and print error information from qemu-sockets nbd: ask and print error information from qemu-sockets ...
2012-10-24target-arm: Remove out of date FIXME regarding saturating arithmeticPeter Maydell
Remove an out of date FIXME regarding the saturating arithmetic helpers: we now do pass a pointer to CPUARMState to these helpers, and since the AREG0 changes went in there is no difference between helper.c and op_helper.c and therefore no point in moving the functions. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2012-10-24target-arm: Implement abs_i32 inline rather than as a helperPeter Maydell
Implement abs_i32 inline (with movcond) rather than using a helper function. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2012-10-24target-arm: Use TCG operation for Neon 64 bit negationPeter Maydell
Use the TCG operation to do Neon 64 bit negations rather than calling a helper routine for it. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2012-10-24arm-semi.c: Handle get/put_user() failure accessing argumentsPeter Maydell
Rework the handling of arguments to ARM semihosting calls so that we handle a possible failure return from get_user_ual() or put_user_ual(). (This incidentally silences a lot of warnings from clang about "expression result unused"). Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2012-10-23qmp: add NBD server commandsPaolo Bonzini
Adding an NBD server inside QEMU is trivial, since all the logic is in nbd.c and can be shared easily between qemu-nbd and QEMU itself. The main difference is that qemu-nbd serves a single unnamed export, while QEMU serves named exports. Acked-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23block: add close notifiersPaolo Bonzini
The first user of close notifiers will be the embedded NBD server. It would be possible to use them to do some of the ad hoc processing (e.g. for block jobs and I/O limits) that is currently done by bdrv_close. Acked-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23block: prepare code for adding block notifiersPaolo Bonzini
There is no reason in principle to skip job cancellation and draining of pending I/O when there is no medium in the disk. Do these unconditionally, which also prepares the code for the next patch. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qemu-sockets: add socket_listen, socket_connect, socket_parsePaolo Bonzini
These are QAPI-friendly versions of the qemu-sockets functions. They support IP sockets, Unix sockets, and named file descriptors, using a QAPI union to dispatch to the correct function. Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23tests: do not include tools-obj-yPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qemu-sockets: return InetSocketAddress from inet_parsePaolo Bonzini
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qapi: add socket address typesPaolo Bonzini
Acked-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23build: add QAPI files to the toolsPaolo Bonzini
We need them because qemu-sockets will soon be using SocketAddress. Acked-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23Rename target_phys_addr_t to hwaddrAvi Kivity
target_phys_addr_t is unwieldly, violates the C standard (_t suffixes are reserved) and its purpose doesn't match the name (most target_phys_addr_t addresses are not target specific). Replace it with a finger-friendly, standards conformant hwaddr. Outstanding patchsets can be fixed up with the command git rebase -i --exec 'find -name "*.[ch]" | xargs s/target_phys_addr_t/hwaddr/g' origin Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-10-23vnc: drop QERR_VNC_SERVER_FAILEDPaolo Bonzini
We now always return "nice" error messages in errp when we goto fail. Drop the default error message. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qemu-sockets: add error propagation to Unix socket functionsPaolo Bonzini
Before: $ qemu-system-x86_64 -monitor unix:/vvv,server=off connect(unix:/vvv): No such file or directory chardev: opening backend "socket" failed After: $ x86_64-softmmu/qemu-system-x86_64 -monitor unix:/vvv,server=off qemu-system-x86_64: -monitor unix:/vvv,server=off: Failed to connect to socket: No such file or directory chardev: opening backend "socket" failed Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qemu-sockets: add error propagation to inet_parsePaolo Bonzini
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qemu-sockets: add error propagation to inet_dgram_optsPaolo Bonzini
Before: $ qemu-system-x86_64 -monitor udp:localhost:631@localhost:631 inet_dgram_opts: bind(ipv4,127.0.0.1,631): OK inet_dgram_opts failed chardev: opening backend "udp" failed After: $ x86_64-softmmu/qemu-system-x86_64 -monitor udp:localhost:631@localhost:631 qemu-system-x86_64: -monitor udp:localhost:631@localhost:631: Failed to bind socket: Address already in use chardev: opening backend "udp" failed Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qemu-sockets: add error propagation to inet_connect_addrPaolo Bonzini
perror and fprintf can be removed because all clients can now consume Errors properly. However, we'll need to change the non-blocking connect handlers to take an Error, in order to improve error handling for migration with the TCP protocol. This is a minor degradation in error reporting for outgoing migration. However, until 1.2 this case just failed without even attempting to connect, so it is still an improvement as far as overall QoI is concerned. Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qemu-sockets: include strerror or gai_strerror output in error messagesPaolo Bonzini
Among others, before: $ qemu-system-x86_64 -chardev socket,port=12345,id=char inet_connect: host and/or port not specified chardev: opening backend "socket" failed After: $ x86_64-softmmu/qemu-system-x86_64 -chardev socket,port=12345,id=char qemu-system-x86_64: -chardev socket,port=12345,id=char: host and/or port not specified chardev: opening backend "socket" failed perror and fprintf can be removed because all clients can now consume Errors properly. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23vnc: add error propagation to vnc_display_openPaolo Bonzini
Before: $ qemu-system-x86_64 -vnc foo.bar:12345 getaddrinfo(foo.bar,18245): Name or service not known Failed to start VNC server on `foo.bar:12345' $ qemu-system-x86_64 -vnc localhost:12345,reverse=on inet_connect_opts: connect(ipv4,yakj.usersys.redhat.com,127.0.0.1,12345): Connection refused Failed to start VNC server on `localhost:12345,reverse=on' After: $ x86_64-softmmu/qemu-system-x86_64 -vnc foo.bar:12345 Failed to start VNC server on `foo.bar:12345': address resolution failed for foo.bar:18245: Name or service not known $ x86_64-softmmu/qemu-system-x86_64 -vnc localhost:12345,reverse=on Failed to start VNC server on `localhost:12345,reverse=on': Failed to connect to socket: Connection refused Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23vnc: reorganize code for reverse modePaolo Bonzini
Avoid the dance between csock and vs->lsock. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23vnc: introduce a single label for error returnsPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23vnc: avoid Yoda conditionalsPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qemu-ga: ask and print error information from qemu-socketsPaolo Bonzini
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23nbd: ask and print error information from qemu-socketsPaolo Bonzini
Before: $ qemu-system-x86_64 nbd:localhost:12345 inet_connect_opts: connect(ipv4,yakj.usersys.redhat.com,127.0.0.1,12345): Connection refused qemu-system-x86_64: could not open disk image nbd:localhost:12345: Connection refused After: $ x86_64-softmmu/qemu-system-x86_64 nbd:localhost:12345 qemu-system-x86_64: Failed to connect to socket: Connection refused qemu-system-x86_64: could not open disk image nbd:localhost:12345: Connection refused Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qemu-char: ask and print error information from qemu-socketsPaolo Bonzini
Before: $ qemu-system-x86_64 -monitor tcp:localhost:6000 (starts despite error) $ qemu-system-x86_64 -monitor tcp:foo.bar:12345 getaddrinfo(foo.bar,12345): Name or service not known chardev: opening backend "socket" failed $ qemu-system-x86_64 -monitor tcp:localhost:443,server=on inet_listen_opts: bind(ipv4,127.0.0.1,443): Permission denied inet_listen_opts: FAILED chardev: opening backend "socket" failed After: $ x86_64-softmmu/qemu-system-x86_64 -monitor tcp:localhost:6000 x86_64-softmmu/qemu-system-x86_64: -monitor tcp:localhost:6000: Failed to connect to socket: Connection refused chardev: opening backend "socket" failed $ x86_64-softmmu/qemu-system-x86_64 -monitor tcp:foo.bar:12345 qemu-system-x86_64: -monitor tcp:foo.bar:12345: address resolution failed for foo.bar:12345: Name or service not known chardev: opening backend "socket" failed $ x86_64-softmmu/qemu-system-x86_64 -monitor tcp:localhost:443,server=on qemu-system-x86_64: -monitor tcp:localhost:443,server=on: Failed to bind socket: Permission denied chardev: opening backend "socket" failed Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23migration (incoming): add error propagation to fd and exec protocolsPaolo Bonzini
And remove the superfluous integer return value. Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23migration (outgoing): add error propagation for all protocolsPaolo Bonzini
Error propagation is already there for socket backends. Add it to other protocols, simplifying code that tests for errors that will never happen. With all protocols understanding Error, the code can be simplified further by removing the return value. Unfortunately, the quality of error messages varies depending on where the error is detected, because no Error is passed to the NonBlockingConnectHandler. Thus, the exact error message still cannot be sent to the user if the OS reports it asynchronously via SO_ERROR. If NonBlockingConnectHandler received an Error**, we could for example report the error class and/or message via a new field of the query-migration command even if it is reported asynchronously. Before: (qemu) migrate fd:ffff migrate: An undefined error has occurred (qemu) info migrate (qemu) After: (qemu) migrate fd:ffff migrate: File descriptor named 'ffff' has not been found (qemu) info migrate capabilities: xbzrle: off Migration status: failed total time: 0 milliseconds Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23migration: use qemu-sockets to establish Unix socketsPaolo Bonzini
This makes migration-unix.c again a cut-and-paste job from migration-tcp.c, exactly as it was in the beginning. :) Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23migration: centralize call to migrate_fd_error()Paolo Bonzini
The call to migrate_fd_error() was missing for non-socket backends, so centralize it in qmp_migrate(). Before: (qemu) migrate fd:ffff migrate: An undefined error has occurred (qemu) info migrate (qemu) After: (qemu) migrate fd:ffff migrate: An undefined error has occurred (qemu) info migrate capabilities: xbzrle: off Migration status: failed total time: 0 milliseconds (The awful error message will be fixed later in the series). Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23migration: avoid using error_is_set and thus relying on errp != NULLPaolo Bonzini
The migration code is using errp to detect "internal" errors, this means that it relies on errp being non-NULL. No impact so far because our only QMP clients (the QMP marshaller and HMP) never pass a NULL Error **. But if we had others, this patch would make sure that migration can work with a NULL Error **. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qemu-sockets: add nonblocking connect for Unix socketsPaolo Bonzini
This patch mostly mimics what was done to TCP sockets, but simpler because there is only one address to try. It also includes a free EINTR bug fix. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qemu-sockets: unix_listen and unix_connect are portablePaolo Bonzini
They are just wrappers and do not need a Win32-specific version. Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qemu-sockets: add Error ** to all functionsPaolo Bonzini
This lets me adjust the clients to do proper error propagation first, thus avoiding temporary regressions in the quality of the error messages. Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23error: add error_set_errno and error_setg_errnoPaolo Bonzini
These functions help maintaining homogeneous formatting of error messages that include strerror values. Acked-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-22Merge remote-tracking branch 'qemu-kvm/memory/urgent' into stagingAnthony Liguori
* qemu-kvm/memory/urgent: memory: abort if a memory region is destroyed during a transaction i440fx: avoid destroying memory regions within a transaction memory: Make eventfd adhere to device endianness
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