Moved in_delay_slot to DisasCtxt structure. #9
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Signed-off-by: Cupertino Miranda <cmiranda@synopsys.com>
The decoder and the disassembler inspired by ARC GNU binutils. Signed-off-by: Claudiu Zissulescu <claziss@synopsys.com>
Signed-off-by: Claudiu Zissulescu <claziss@synopsys.com>
Signed-off-by: Cupertino Miranda <cmiranda@synopsys.com>
Add the most generic parts of TCG constructions. It contains the basic infrastructure for fundamental ARC features, such as ZOL (zero overhead loops) and delay-slots. Also includes hand crafted TCG for more intricate instructions, such as vector instructions. Signed-off-by: Shahab Vahedi <shahab@synopsys.com>
TCG definitions as defined by our domain-specific-language (DSL) ISA infrastructure. Signed-off-by: Cupertino Miranda <cmiranda@synopsys.com>
Add the infrastructure to define build configuration (BCR) and auxiliary registers allowing independent modules (MMU, MPU, etc.) to use and extend them. Signed-off-by: Cupertino Miranda <cmiranda@synopsys.com>
Signed-off-by: Claudiu Zissulescu <claziss@synopsys.com>
Add Synopsys ARC MMU version 4 support. The implementation is restricted to 8K page size support. Signed-off-by: Cupertino Miranda <cmiranda@synopsys.com>
Add memory implementation for Synopsys MPU unit version 3. Synopsys MPU allows to create memory regions against unauthorized execution/read/writes accesses. Signed-off-by: Shahab Vahedi <shahab@synopsys.com>
Register layout for the target and the mechanisms to read and set them. Signed-off-by: Shahab Vahedi <shahab@synopsys.com>
Add the Synopsys ARC boards, arc_sim for testing, sim-hs main emulation board using standard UART and nsim which includes a Synopsys ARC specific UART implementation. Signed-off-by: Claudiu Zissulescu <claziss@synopsys.com>
Add remaining bits of the Synopsys ARCv2 (EM/HS) support into QEMU, configure bits, arch_init and configuration files for softmmu (hardware emulation). Signed-off-by: Shahab Vahedi <shahab@synopsys.com> Signed-off-by: Cupertino Miranda <cmiranda@synopsys.com>
The added tests verify basic instructions execution as well as more advanced features such as zero overhead loops interrupt system, memory management unit and memory protection unit. Signed-off-by: Claudiu Zissulescu <claziss@synopsys.com> Signed-off-by: Cupertino Miranda <cmiranda@synopsys.com>
Just an acceptance test with ARC Linux booting. Signed-off-by: Cupertino Miranda <cmiranda@synopsys.com>
Nuke the qemu internal translation cache on a TLBWriteNI cmd, otherwise we can end up with stale TLB entries. Linux does this on an ASID rollover (when 8-bit ASID overflows) The problem shows up on a kernel where TLB flush interfaces were dumbed down to actually flush the TLB (with the TLBWriteNi cmd) as opposed to more optimal ASID increment for large flush ranges as that is quicker on real hardware (vs. iterating through the TLB and nuking entries one page worth at a time). Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
shahab-vahedi approved these changes Jan 19, 2021
abrodkin added a commit that referenced this pull request Feb 6, 2021
AUX registers are used in ARC processors to deal with settings or internal states of different internals like built-in timers, interrupt controller(s), caches etc. Though for us here interrupts and timers are of the main interest as those are very good examples of IO operations and we do need explicitly allow it to make "icount" subsystem happy, as otherwise on the first attempt to set ARC built-in timer LIMIT register we see icount_get_raw_locked() barking: "qemu-system-arc: Bad icount read", and that's because: ------------------>8----------------- | gdb --args ./build/qemu-system-arc ... -icount auto | | ... | | (gdb) b icount.c:116 | Breakpoint 1 at 0x54178a: file ../softmmu/icount.c, line 116. | | (gdb) r | | Thread 3 "qemu-system-arc" hit Breakpoint 1, icount_get_raw_locked () at ../softmmu/icount.c:116 | 116 error_report("Bad icount read"); | (gdb) bt | #0 icount_get_raw_locked () at ../softmmu/icount.c:116 | #1 0x0000555555a957d5 in icount_get_locked () at ../softmmu/icount.c:128 | #2 0x0000555555a9586d in icount_get () at ../softmmu/icount.c:154 | #3 0x0000555555a901fd in tcg_get_virtual_clock () at ../accel/tcg/tcg-cpus.c:524 | #4 0x0000555555a0fe05 in cpus_get_virtual_clock () at ../softmmu/cpus.c:211 | #5 0x0000555555c88fd4 in qemu_clock_get_ns (type=QEMU_CLOCK_VIRTUAL) at ../util/qemu-timer.c:638 | #6 0x00005555559aa8eb in cpu_arc_timer_update (env=0x5555565280a0, timer=0) at ../target/arc/timer.c:42 | #7 0x00005555559ab272 in cpu_arc_store_limit (env=0x5555565280a0, timer=0, value=500000) at ../target/arc/timer.c:246 | #8 0x00005555559aba04 in aux_timer_set (aux_reg_detail=0x5555562eedb0 <arc_aux_regs_detail+2352>, val=500000, data=0x5555565280a0) at ../target/arc/timer.c:436 | #9 0x00005555559a4cb2 in helper_sr (env=0x5555565280a0, val=500000, aux=35) at ../target/arc/op_helper.c:209 | #10 0x00007fffb041dc6a in code_gen_buffer () | #11 0x0000555555a2f6c8 in cpu_tb_exec (cpu=0x55555651f960, itb=0x7fffb041db00 <code_gen_buffer+4315859>) at ../accel/tcg/cpu-exec.c:178 | #12 0x0000555555a304ae in cpu_loop_exec_tb (cpu=0x55555651f960, tb=0x7fffb041db00 <code_gen_buffer+4315859>, last_tb=0x7ffff6013928, tb_exit=0x7ffff6013920) | at ../accel/tcg/cpu-exec.c:658 | #13 0x0000555555a307a6 in cpu_exec (cpu=0x55555651f960) at ../accel/tcg/cpu-exec.c:771 | #14 0x0000555555a8f911 in tcg_cpu_exec (cpu=0x55555651f960) at ../accel/tcg/tcg-cpus.c:243 | #15 0x0000555555a8fc12 in tcg_rr_cpu_thread_fn (arg=0x55555651f960) at ../accel/tcg/tcg-cpus.c:346 | #16 0x0000555555c9562e in qemu_thread_start (args=0x5555565339e0) at ../util/qemu-thread-posix.c:521 | #17 0x00007ffff7899609 in start_thread (arg=<optimized out>) at pthread_create.c:477 | #18 0x00007ffff77c0293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 ------------------>8----------------- Fix that, hinting QEMU about possible IO on access of AUX regs, which are only possible via LR & SR instructions. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> abrodkin added a commit that referenced this pull request Feb 6, 2021
AUX registers are used in ARC processors to deal with settings or internal states of different internals like built-in timers, interrupt controller(s), caches etc. Though for us here interrupts and timers are of the main interest as those are very good examples of IO operations and we do need explicitly allow it to make "icount" subsystem happy, as otherwise on the first attempt to set ARC built-in timer LIMIT register we see icount_get_raw_locked() barking: "qemu-system-arc: Bad icount read", and that's because: ------------------>8----------------- | gdb --args ./build/qemu-system-arc ... -icount auto | | ... | | (gdb) b icount.c:116 | Breakpoint 1 at 0x54178a: file ../softmmu/icount.c, line 116. | | (gdb) r | | Thread 3 "qemu-system-arc" hit Breakpoint 1, icount_get_raw_locked () at ../softmmu/icount.c:116 | 116 error_report("Bad icount read"); | (gdb) bt | #0 icount_get_raw_locked () at ../softmmu/icount.c:116 | #1 0x0000555555a957d5 in icount_get_locked () at ../softmmu/icount.c:128 | #2 0x0000555555a9586d in icount_get () at ../softmmu/icount.c:154 | #3 0x0000555555a901fd in tcg_get_virtual_clock () at ../accel/tcg/tcg-cpus.c:524 | #4 0x0000555555a0fe05 in cpus_get_virtual_clock () at ../softmmu/cpus.c:211 | #5 0x0000555555c88fd4 in qemu_clock_get_ns (type=QEMU_CLOCK_VIRTUAL) at ../util/qemu-timer.c:638 | #6 0x00005555559aa8eb in cpu_arc_timer_update (env=0x5555565280a0, timer=0) at ../target/arc/timer.c:42 | #7 0x00005555559ab272 in cpu_arc_store_limit (env=0x5555565280a0, timer=0, value=500000) at ../target/arc/timer.c:246 | #8 0x00005555559aba04 in aux_timer_set (aux_reg_detail=0x5555562eedb0 <arc_aux_regs_detail+2352>, val=500000, data=0x5555565280a0) at ../target/arc/timer.c:436 | #9 0x00005555559a4cb2 in helper_sr (env=0x5555565280a0, val=500000, aux=35) at ../target/arc/op_helper.c:209 | #10 0x00007fffb041dc6a in code_gen_buffer () | #11 0x0000555555a2f6c8 in cpu_tb_exec (cpu=0x55555651f960, itb=0x7fffb041db00 <code_gen_buffer+4315859>) at ../accel/tcg/cpu-exec.c:178 | #12 0x0000555555a304ae in cpu_loop_exec_tb (cpu=0x55555651f960, tb=0x7fffb041db00 <code_gen_buffer+4315859>, last_tb=0x7ffff6013928, tb_exit=0x7ffff6013920) | at ../accel/tcg/cpu-exec.c:658 | #13 0x0000555555a307a6 in cpu_exec (cpu=0x55555651f960) at ../accel/tcg/cpu-exec.c:771 | #14 0x0000555555a8f911 in tcg_cpu_exec (cpu=0x55555651f960) at ../accel/tcg/tcg-cpus.c:243 | #15 0x0000555555a8fc12 in tcg_rr_cpu_thread_fn (arg=0x55555651f960) at ../accel/tcg/tcg-cpus.c:346 | #16 0x0000555555c9562e in qemu_thread_start (args=0x5555565339e0) at ../util/qemu-thread-posix.c:521 | #17 0x00007ffff7899609 in start_thread (arg=<optimized out>) at pthread_create.c:477 | #18 0x00007ffff77c0293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 ------------------>8----------------- Fix that, hinting QEMU about possible IO on access of AUX regs, which are only possible via LR & SR instructions. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> 
cupertinomiranda force-pushed the master branch 2 times, most recently from 3bd198c to aed9f67 Compare cupertinomiranda pushed a commit that referenced this pull request Apr 5, 2021
Commit v5.2.0-190-g0546c0609c ("vl: split various early command line options to a separate function") moved the trace backend init code to the qemu_process_early_options(). Which is now being called before os_daemonize() via qemu_maybe_daemonize(). Turns out that this change of order causes a problem when executing QEMU in daemon mode and with CONFIG_TRACE_SIMPLE. The trace thread is now being created by the parent, and the parent is left waiting for a trace file flush that was registered via st_init(). The result is that the parent process never exits. To reproduce, fire up a QEMU process with -daemonize and with CONFIG_TRACE_SIMPLE enabled. Two QEMU process will be left in the host: $ sudo ./x86_64-softmmu/qemu-system-x86_64 -S -no-user-config -nodefaults \ -nographic -machine none,accel=kvm:tcg -daemonize $ ps axf | grep qemu 529710 pts/3 S+ 0:00 | \_ grep --color=auto qemu 529697 ? Ssl 0:00 \_ ./x86_64-softmmu/qemu-system-x86_64 -S -no-user-config -nodefaults -nographic -machine none,accel=kvm:tcg -daemonize 529699 ? Sl 0:00 \_ ./x86_64-softmmu/qemu-system-x86_64 -S -no-user-config -nodefaults -nographic -machine none,accel=kvm:tcg -daemonize The parent thread is hang in flush_trace_file: $ sudo gdb ./x86_64-softmmu/qemu-system-x86_64 529697 (..) (gdb) bt #0 0x00007f9dac6a137d in syscall () at /lib64/libc.so.6 #1 0x00007f9dacc3c4f3 in g_cond_wait () at /lib64/libglib-2.0.so.0 #2 0x0000555d12f952da in flush_trace_file (wait=true) at ../trace/simple.c:140 #3 0x0000555d12f95b4c in st_flush_trace_buffer () at ../trace/simple.c:383 #4 0x00007f9dac5e43a7 in __run_exit_handlers () at /lib64/libc.so.6 #5 0x00007f9dac5e4550 in on_exit () at /lib64/libc.so.6 #6 0x0000555d12d454de in os_daemonize () at ../os-posix.c:255 #7 0x0000555d12d0bd5c in qemu_maybe_daemonize (pid_file=0x0) at ../softmmu/vl.c:2408 #8 0x0000555d12d0e566 in qemu_init (argc=8, argv=0x7fffc594d9b8, envp=0x7fffc594da00) at ../softmmu/vl.c:3459 #9 0x0000555d128edac1 in main (argc=8, argv=0x7fffc594d9b8, envp=0x7fffc594da00) at ../softmmu/main.c:49 (gdb) Aside from the 'zombie' process in the host, this is directly impacting Libvirt. Libvirt waits for the parent process to exit to be sure that the QMP monitor is available in the daemonized process to fetch QEMU capabilities, and as is now Libvirt hangs at daemon start waiting for the parent thread to exit. The fix is simple: just move the trace backend related code back to be executed after daemonizing. Fixes: 0546c06 Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> Message-Id: <20210105181437.538366-2-danielhb413@gmail.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> cupertinomiranda pushed a commit that referenced this pull request Apr 5, 2021
Incoming enabled bitmaps are busy, because we do bdrv_dirty_bitmap_create_successor() for them. But disabled bitmaps being migrated are not marked busy, and user can remove them during the incoming migration. Then we may crash in cancel_incoming_locked() when try to remove the bitmap that was already removed by user, like this: #0 qemu_mutex_lock_impl (mutex=0x5593d88c50d1, file=0x559680554b20 "../block/dirty-bitmap.c", line=64) at ../util/qemu-thread-posix.c:77 #1 bdrv_dirty_bitmaps_lock (bs=0x5593d88c0ee9) at ../block/dirty-bitmap.c:64 #2 bdrv_release_dirty_bitmap (bitmap=0x5596810e9570) at ../block/dirty-bitmap.c:362 #3 cancel_incoming_locked (s=0x559680be8208 <dbm_state+40>) at ../migration/block-dirty-bitmap.c:918 #4 dirty_bitmap_load (f=0x559681d02b10, opaque=0x559680be81e0 <dbm_state>, version_id=1) at ../migration/block-dirty-bitmap.c:1194 #5 vmstate_load (f=0x559681d02b10, se=0x559680fb5810) at ../migration/savevm.c:908 #6 qemu_loadvm_section_part_end (f=0x559681d02b10, mis=0x559680fb4a30) at ../migration/savevm.c:2473 #7 qemu_loadvm_state_main (f=0x559681d02b10, mis=0x559680fb4a30) at ../migration/savevm.c:2626 #8 postcopy_ram_listen_thread (opaque=0x0) at ../migration/savevm.c:1871 #9 qemu_thread_start (args=0x5596817ccd10) at ../util/qemu-thread-posix.c:521 #10 start_thread () at /lib64/libpthread.so.0 #11 clone () at /lib64/libc.so.6 Note bs pointer taken from bitmap: it's definitely bad aligned. That's because we are in use after free, bitmap is already freed. So, let's make disabled bitmaps (being migrated) busy during incoming migration. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20210322094906.5079-2-vsementsov@virtuozzo.com>
cupertinomiranda pushed a commit that referenced this pull request Apr 5, 2021
When building with --enable-sanitizers we get: Direct leak of 32 byte(s) in 2 object(s) allocated from: #0 0x5618479ec7cf in malloc (qemu-system-aarch64+0x233b7cf) #1 0x7f675745f958 in g_malloc (/lib64/libglib-2.0.so.0+0x58958) #2 0x561847f02ca2 in usb_packet_init hw/usb/core.c:531:5 #3 0x561848df4df4 in usb_ehci_init hw/usb/hcd-ehci.c:2575:5 #4 0x561847c119ac in ehci_sysbus_init hw/usb/hcd-ehci-sysbus.c:73:5 #5 0x56184a5bdab8 in object_init_with_type qom/object.c:375:9 #6 0x56184a5bd955 in object_init_with_type qom/object.c:371:9 #7 0x56184a5a2bda in object_initialize_with_type qom/object.c:517:5 #8 0x56184a5a24d5 in object_initialize qom/object.c:536:5 #9 0x56184a5a2f6c in object_initialize_child_with_propsv qom/object.c:566:5 #10 0x56184a5a2e60 in object_initialize_child_with_props qom/object.c:549:10 #11 0x56184a5a3a1e in object_initialize_child_internal qom/object.c:603:5 #12 0x561849542d18 in npcm7xx_init hw/arm/npcm7xx.c:427:5 Similarly to commit d710e1e ("usb: ehci: fix memory leak in ehci"), fix by calling usb_ehci_finalize() to free the USBPacket. Fixes: 7341ea0 Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-Id: <20210323183701.281152-1-f4bug@amsat.org> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
cupertinomiranda pushed a commit that referenced this pull request Apr 5, 2021
When building with --enable-sanitizers we get: Direct leak of 16 byte(s) in 1 object(s) allocated from: #0 0x5618479ec7cf in malloc (qemu-system-aarch64+0x233b7cf) #1 0x7f675745f958 in g_malloc (/lib64/libglib-2.0.so.0+0x58958) #2 0x561847c2dcc9 in xlnx_dp_init hw/display/xlnx_dp.c:1259:5 #3 0x56184a5bdab8 in object_init_with_type qom/object.c:375:9 #4 0x56184a5a2bda in object_initialize_with_type qom/object.c:517:5 #5 0x56184a5a24d5 in object_initialize qom/object.c:536:5 #6 0x56184a5a2f6c in object_initialize_child_with_propsv qom/object.c:566:5 #7 0x56184a5a2e60 in object_initialize_child_with_props qom/object.c:549:10 #8 0x56184a5a3a1e in object_initialize_child_internal qom/object.c:603:5 #9 0x5618495aa431 in xlnx_zynqmp_init hw/arm/xlnx-zynqmp.c:273:5 The RX/TX FIFOs are created in xlnx_dp_init(), add xlnx_dp_finalize() to destroy them. Fixes: 58ac482 ("introduce xlnx-dp") Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20210323182958.277654-1-f4bug@amsat.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Contributor
| Is this still valid, otherwise propose to close it ! |
Author
| Closing it. Delayslot implementation is already changing anyway. |
cupertinomiranda pushed a commit that referenced this pull request Jul 21, 2021
Incoming enabled bitmaps are busy, because we do bdrv_dirty_bitmap_create_successor() for them. But disabled bitmaps being migrated are not marked busy, and user can remove them during the incoming migration. Then we may crash in cancel_incoming_locked() when try to remove the bitmap that was already removed by user, like this: #0 qemu_mutex_lock_impl (mutex=0x5593d88c50d1, file=0x559680554b20 "../block/dirty-bitmap.c", line=64) at ../util/qemu-thread-posix.c:77 #1 bdrv_dirty_bitmaps_lock (bs=0x5593d88c0ee9) at ../block/dirty-bitmap.c:64 #2 bdrv_release_dirty_bitmap (bitmap=0x5596810e9570) at ../block/dirty-bitmap.c:362 #3 cancel_incoming_locked (s=0x559680be8208 <dbm_state+40>) at ../migration/block-dirty-bitmap.c:918 #4 dirty_bitmap_load (f=0x559681d02b10, opaque=0x559680be81e0 <dbm_state>, version_id=1) at ../migration/block-dirty-bitmap.c:1194 #5 vmstate_load (f=0x559681d02b10, se=0x559680fb5810) at ../migration/savevm.c:908 #6 qemu_loadvm_section_part_end (f=0x559681d02b10, mis=0x559680fb4a30) at ../migration/savevm.c:2473 #7 qemu_loadvm_state_main (f=0x559681d02b10, mis=0x559680fb4a30) at ../migration/savevm.c:2626 #8 postcopy_ram_listen_thread (opaque=0x0) at ../migration/savevm.c:1871 #9 qemu_thread_start (args=0x5596817ccd10) at ../util/qemu-thread-posix.c:521 #10 start_thread () at /lib64/libpthread.so.0 #11 clone () at /lib64/libc.so.6 Note bs pointer taken from bitmap: it's definitely bad aligned. That's because we are in use after free, bitmap is already freed. So, let's make disabled bitmaps (being migrated) busy during incoming migration. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20210322094906.5079-2-vsementsov@virtuozzo.com>
cupertinomiranda pushed a commit that referenced this pull request Jul 21, 2021
When building with --enable-sanitizers we get: Direct leak of 32 byte(s) in 2 object(s) allocated from: #0 0x5618479ec7cf in malloc (qemu-system-aarch64+0x233b7cf) #1 0x7f675745f958 in g_malloc (/lib64/libglib-2.0.so.0+0x58958) #2 0x561847f02ca2 in usb_packet_init hw/usb/core.c:531:5 #3 0x561848df4df4 in usb_ehci_init hw/usb/hcd-ehci.c:2575:5 #4 0x561847c119ac in ehci_sysbus_init hw/usb/hcd-ehci-sysbus.c:73:5 #5 0x56184a5bdab8 in object_init_with_type qom/object.c:375:9 #6 0x56184a5bd955 in object_init_with_type qom/object.c:371:9 #7 0x56184a5a2bda in object_initialize_with_type qom/object.c:517:5 #8 0x56184a5a24d5 in object_initialize qom/object.c:536:5 #9 0x56184a5a2f6c in object_initialize_child_with_propsv qom/object.c:566:5 #10 0x56184a5a2e60 in object_initialize_child_with_props qom/object.c:549:10 #11 0x56184a5a3a1e in object_initialize_child_internal qom/object.c:603:5 #12 0x561849542d18 in npcm7xx_init hw/arm/npcm7xx.c:427:5 Similarly to commit d710e1e ("usb: ehci: fix memory leak in ehci"), fix by calling usb_ehci_finalize() to free the USBPacket. Fixes: 7341ea0 Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-Id: <20210323183701.281152-1-f4bug@amsat.org> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
cupertinomiranda pushed a commit that referenced this pull request Jul 21, 2021
When building with --enable-sanitizers we get: Direct leak of 16 byte(s) in 1 object(s) allocated from: #0 0x5618479ec7cf in malloc (qemu-system-aarch64+0x233b7cf) #1 0x7f675745f958 in g_malloc (/lib64/libglib-2.0.so.0+0x58958) #2 0x561847c2dcc9 in xlnx_dp_init hw/display/xlnx_dp.c:1259:5 #3 0x56184a5bdab8 in object_init_with_type qom/object.c:375:9 #4 0x56184a5a2bda in object_initialize_with_type qom/object.c:517:5 #5 0x56184a5a24d5 in object_initialize qom/object.c:536:5 #6 0x56184a5a2f6c in object_initialize_child_with_propsv qom/object.c:566:5 #7 0x56184a5a2e60 in object_initialize_child_with_props qom/object.c:549:10 #8 0x56184a5a3a1e in object_initialize_child_internal qom/object.c:603:5 #9 0x5618495aa431 in xlnx_zynqmp_init hw/arm/xlnx-zynqmp.c:273:5 The RX/TX FIFOs are created in xlnx_dp_init(), add xlnx_dp_finalize() to destroy them. Fixes: 58ac482 ("introduce xlnx-dp") Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20210323182958.277654-1-f4bug@amsat.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
kolerov pushed a commit that referenced this pull request Jul 13, 2024
Otherwise tcg_handle_interrupt() triggers an assertion failure: #5 0x0000555555c97369 in tcg_handle_interrupt (cpu=0x555557434cb0, mask=2) at ../accel/tcg/tcg-accel-ops.c:83 #6 tcg_handle_interrupt (cpu=0x555557434cb0, mask=2) at ../accel/tcg/tcg-accel-ops.c:81 #7 0x0000555555b4d58b in pic_irq_request (opaque=<optimized out>, irq=<optimized out>, level=1) at ../hw/i386/x86.c:555 #8 0x0000555555b4f218 in gsi_handler (opaque=0x5555579423d0, n=13, level=1) at ../hw/i386/x86.c:611 #9 0x00007fffa42bde14 in code_gen_buffer () #10 0x0000555555c724bb in cpu_tb_exec (cpu=cpu@entry=0x555557434cb0, itb=<optimized out>, tb_exit=tb_exit@entry=0x7fffe9bfd658) at ../accel/tcg/cpu-exec.c:457 Cc: qemu-stable@nongnu.org Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1808 Reported-by: NyanCatTW1 <https://gitlab.com/a0939712328> Co-developed-by: Richard Henderson <richard.henderson@linaro.org>' Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> (cherry picked from commit c1f27a0) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
kolerov pushed a commit that referenced this pull request Jul 13, 2024
virtio_load() as a whole should run in coroutine context because it reads from the migration stream and we don't want this to block. However, it calls virtio_set_features_nocheck() and devices don't expect their .set_features callback to run in a coroutine and therefore call functions that may not be called in coroutine context. To fix this, drop out of coroutine context for calling virtio_set_features_nocheck(). Without this fix, the following crash was reported: #0 __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0) at pthread_kill.c:44 #1 0x00007efc738c05d3 in __pthread_kill_internal (signo=6, threadid=<optimized out>) at pthread_kill.c:78 #2 0x00007efc73873d26 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26 #3 0x00007efc738477f3 in __GI_abort () at abort.c:79 #4 0x00007efc7384771b in __assert_fail_base (fmt=0x7efc739dbcb8 "", assertion=assertion@entry=0x560aebfbf5cf "!qemu_in_coroutine()", file=file@entry=0x560aebfcd2d4 "../block/graph-lock.c", line=line@entry=275, function=function@entry=0x560aebfcd34d "void bdrv_graph_rdlock_main_loop(void)") at assert.c:92 #5 0x00007efc7386ccc6 in __assert_fail (assertion=0x560aebfbf5cf "!qemu_in_coroutine()", file=0x560aebfcd2d4 "../block/graph-lock.c", line=275, function=0x560aebfcd34d "void bdrv_graph_rdlock_main_loop(void)") at assert.c:101 #6 0x0000560aebcd8dd6 in bdrv_register_buf () #7 0x0000560aeb97ed97 in ram_block_added.llvm () #8 0x0000560aebb8303f in ram_block_add.llvm () #9 0x0000560aebb834fa in qemu_ram_alloc_internal.llvm () #10 0x0000560aebb2ac98 in vfio_region_mmap () #11 0x0000560aebb3ea0f in vfio_bars_register () #12 0x0000560aebb3c628 in vfio_realize () #13 0x0000560aeb90f0c2 in pci_qdev_realize () #14 0x0000560aebc40305 in device_set_realized () #15 0x0000560aebc48e07 in property_set_bool.llvm () #16 0x0000560aebc46582 in object_property_set () #17 0x0000560aebc4cd58 in object_property_set_qobject () #18 0x0000560aebc46ba7 in object_property_set_bool () #19 0x0000560aeb98b3ca in qdev_device_add_from_qdict () #20 0x0000560aebb1fbaf in virtio_net_set_features () #21 0x0000560aebb46b51 in virtio_set_features_nocheck () #22 0x0000560aebb47107 in virtio_load () #23 0x0000560aeb9ae7ce in vmstate_load_state () #24 0x0000560aeb9d2ee9 in qemu_loadvm_state_main () #25 0x0000560aeb9d45e1 in qemu_loadvm_state () #26 0x0000560aeb9bc32c in process_incoming_migration_co.llvm () #27 0x0000560aebeace56 in coroutine_trampoline.llvm () Cc: qemu-stable@nongnu.org Buglink: https://issues.redhat.com/browse/RHEL-832 Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-ID: <20230905145002.46391-3-kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> (cherry picked from commit 92e2e6a) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
kolerov pushed a commit that referenced this pull request Jul 13, 2024
If there is a pending DMA operation during ide_bus_reset(), the fact that the IDEState is already reset before the operation is canceled can be problematic. In particular, ide_dma_cb() might be called and then use the reset IDEState which contains the signature after the reset. When used to construct the IO operation this leads to ide_get_sector() returning 0 and nsector being 1. This is particularly bad, because a write command will thus destroy the first sector which often contains a partition table or similar. Traces showing the unsolicited write happening with IDEState 0x5595af6949d0 being used after reset: > ahci_port_write ahci(0x5595af6923f0)[0]: port write [reg:PxSCTL] @ 0x2c: 0x00000300 > ahci_reset_port ahci(0x5595af6923f0)[0]: reset port > ide_reset IDEstate 0x5595af6949d0 > ide_reset IDEstate 0x5595af694da8 > ide_bus_reset_aio aio_cancel > dma_aio_cancel dbs=0x7f64600089a0 > dma_blk_cb dbs=0x7f64600089a0 ret=0 > dma_complete dbs=0x7f64600089a0 ret=0 cb=0x5595acd40b30 > ahci_populate_sglist ahci(0x5595af6923f0)[0] > ahci_dma_prepare_buf ahci(0x5595af6923f0)[0]: prepare buf limit=512 prepared=512 > ide_dma_cb IDEState 0x5595af6949d0; sector_num=0 n=1 cmd=DMA WRITE > dma_blk_io dbs=0x7f6420802010 bs=0x5595ae2c6c30 offset=0 to_dev=1 > dma_blk_cb dbs=0x7f6420802010 ret=0 > (gdb) p *qiov > $11 = {iov = 0x7f647c76d840, niov = 1, {{nalloc = 1, local_iov = {iov_base = 0x0, > iov_len = 512}}, {__pad = "\001\000\000\000\000\000\000\000\000\000\000", > size = 512}}} > (gdb) bt > #0 blk_aio_pwritev (blk=0x5595ae2c6c30, offset=0, qiov=0x7f6420802070, flags=0, > cb=0x5595ace6f0b0 <dma_blk_cb>, opaque=0x7f6420802010) > at ../block/block-backend.c:1682 > #1 0x00005595ace6f185 in dma_blk_cb (opaque=0x7f6420802010, ret=<optimized out>) > at ../softmmu/dma-helpers.c:179 > #2 0x00005595ace6f778 in dma_blk_io (ctx=0x5595ae0609f0, > sg=sg@entry=0x5595af694d00, offset=offset@entry=0, align=align@entry=512, > io_func=io_func@entry=0x5595ace6ee30 <dma_blk_write_io_func>, > io_func_opaque=io_func_opaque@entry=0x5595ae2c6c30, > cb=0x5595acd40b30 <ide_dma_cb>, opaque=0x5595af6949d0, > dir=DMA_DIRECTION_TO_DEVICE) at ../softmmu/dma-helpers.c:244 > #3 0x00005595ace6f90a in dma_blk_write (blk=0x5595ae2c6c30, > sg=sg@entry=0x5595af694d00, offset=offset@entry=0, align=align@entry=512, > cb=cb@entry=0x5595acd40b30 <ide_dma_cb>, opaque=opaque@entry=0x5595af6949d0) > at ../softmmu/dma-helpers.c:280 > #4 0x00005595acd40e18 in ide_dma_cb (opaque=0x5595af6949d0, ret=<optimized out>) > at ../hw/ide/core.c:953 > #5 0x00005595ace6f319 in dma_complete (ret=0, dbs=0x7f64600089a0) > at ../softmmu/dma-helpers.c:107 > #6 dma_blk_cb (opaque=0x7f64600089a0, ret=0) at ../softmmu/dma-helpers.c:127 > #7 0x00005595ad12227d in blk_aio_complete (acb=0x7f6460005b10) > at ../block/block-backend.c:1527 > #8 blk_aio_complete (acb=0x7f6460005b10) at ../block/block-backend.c:1524 > #9 blk_aio_write_entry (opaque=0x7f6460005b10) at ../block/block-backend.c:1594 > #10 0x00005595ad258cfb in coroutine_trampoline (i0=<optimized out>, > i1=<optimized out>) at ../util/coroutine-ucontext.c:177 Signed-off-by: Fiona Ebner <f.ebner@proxmox.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Tested-by: simon.rowe@nutanix.com Message-ID: <20230906130922.142845-1-f.ebner@proxmox.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> (cherry picked from commit 7d75120) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> kolerov pushed a commit that referenced this pull request Jul 13, 2024
There is no architectural requirement that SME implies SVE, but our implementation currently assumes it. (FEAT_SME_FA64 does imply SVE.) So if you try to run a CPU with eg "-cpu max,sve=off" you quickly run into an assert when the guest tries to write to SMCR_EL1: #6 0x00007ffff4b38e96 in __GI___assert_fail (assertion=0x5555566e69cb "sm", file=0x5555566e5b24 "../../target/arm/helper.c", line=6865, function=0x5555566e82f0 <__PRETTY_FUNCTION__.31> "sve_vqm1_for_el_sm") at ./assert/assert.c:101 #7 0x0000555555ee33aa in sve_vqm1_for_el_sm (env=0x555557d291f0, el=2, sm=false) at ../../target/arm/helper.c:6865 #8 0x0000555555ee3407 in sve_vqm1_for_el (env=0x555557d291f0, el=2) at ../../target/arm/helper.c:6871 #9 0x0000555555ee3724 in smcr_write (env=0x555557d291f0, ri=0x555557da23b0, value=2147483663) at ../../target/arm/helper.c:6995 #10 0x0000555555fd1dba in helper_set_cp_reg64 (env=0x555557d291f0, rip=0x555557da23b0, value=2147483663) at ../../target/arm/tcg/op_helper.c:839 #11 0x00007fff60056781 in code_gen_buffer () Avoid this unsupported and slightly odd combination by disabling SME when SVE is not present. Cc: qemu-stable@nongnu.org Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2005 Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20231127173318.674758-1-peter.maydell@linaro.org (cherry picked from commit f7767ca) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
kolerov pushed a commit that referenced this pull request Jul 13, 2024
…ock_status Using fleecing backup like in [0] on a qcow2 image (with metadata preallocation) can lead to the following assertion failure: > bdrv_co_do_block_status: Assertion `!(ret & BDRV_BLOCK_ZERO)' failed. In the reproducer [0], it happens because the BDRV_BLOCK_RECURSE flag will be set by the qcow2 driver, so the caller will recursively check the file child. Then the BDRV_BLOCK_ZERO set too. Later up the call chain, in bdrv_co_do_block_status() for the snapshot-access driver, the assertion failure will happen, because both flags are set. To fix it, clear the recurse flag after the recursive check was done. In detail: > #0 qcow2_co_block_status Returns 0x45 = BDRV_BLOCK_RECURSE | BDRV_BLOCK_DATA | BDRV_BLOCK_OFFSET_VALID. > #1 bdrv_co_do_block_status Because of the data flag, bdrv_co_do_block_status() will now also set BDRV_BLOCK_ALLOCATED. Because of the recurse flag, bdrv_co_do_block_status() for the bdrv_file child will be called, which returns 0x16 = BDRV_BLOCK_ALLOCATED | BDRV_BLOCK_OFFSET_VALID | BDRV_BLOCK_ZERO. Now the return value inherits the zero flag. Returns 0x57 = BDRV_BLOCK_RECURSE | BDRV_BLOCK_DATA | BDRV_BLOCK_OFFSET_VALID | BDRV_BLOCK_ALLOCATED | BDRV_BLOCK_ZERO. > #2 bdrv_co_common_block_status_above > #3 bdrv_co_block_status_above > #4 bdrv_co_block_status > #5 cbw_co_snapshot_block_status > #6 bdrv_co_snapshot_block_status > #7 snapshot_access_co_block_status > #8 bdrv_co_do_block_status Return value is propagated all the way up to here, where the assertion failure happens, because BDRV_BLOCK_RECURSE and BDRV_BLOCK_ZERO are both set. > #9 bdrv_co_common_block_status_above > #10 bdrv_co_block_status_above > #11 block_copy_block_status > #12 block_copy_dirty_clusters > #13 block_copy_common > #14 block_copy_async_co_entry > #15 coroutine_trampoline [0]: > #!/bin/bash > rm /tmp/disk.qcow2 > ./qemu-img create /tmp/disk.qcow2 -o preallocation=metadata -f qcow2 1G > ./qemu-img create /tmp/fleecing.qcow2 -f qcow2 1G > ./qemu-img create /tmp/backup.qcow2 -f qcow2 1G > ./qemu-system-x86_64 --qmp stdio \ > --blockdev qcow2,node-name=node0,file.driver=file,file.filename=/tmp/disk.qcow2 \ > --blockdev qcow2,node-name=node1,file.driver=file,file.filename=/tmp/fleecing.qcow2 \ > --blockdev qcow2,node-name=node2,file.driver=file,file.filename=/tmp/backup.qcow2 \ > <<EOF > {"execute": "qmp_capabilities"} > {"execute": "blockdev-add", "arguments": { "driver": "copy-before-write", "file": "node0", "target": "node1", "node-name": "node3" } } > {"execute": "blockdev-add", "arguments": { "driver": "snapshot-access", "file": "node3", "node-name": "snap0" } } > {"execute": "blockdev-backup", "arguments": { "device": "snap0", "target": "node1", "sync": "full", "job-id": "backup0" } } > EOF Signed-off-by: Fiona Ebner <f.ebner@proxmox.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru> Message-id: 20240116154839.401030-1-f.ebner@proxmox.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> (cherry picked from commit 8a9be79) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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With this code Vladimir could execute full glibc testsuite.