Recent dtc/libfdt can use either Make or meson as the build system.
By using a subproject, our own meson.build can remove the hard
coded list of source files.
This is also the first step towards managing downloads with .wrap
files instead of submodule.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
fdt_opt == 'disabled' is going to give an error if libfdt is required
by any target, so catch that immediately. For fdt_opt == 'enabled',
instead, do not check immediately whether the internal libfdt is present.
Instead do the check after ascertaining that libfdt is absent or too old.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The VirtioInfoList is already allocated by QAPI_LIST_PREPEND and
need not be allocated by the caller.
Fixes Coverity CID 1508724.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
It is recommended to use SSIZE_T for ssize_t on win32, but the commit
that is being used for slirp.wrap uses int. Update to include the fix
as well as the other bugfix commit "ip: Enforce strict aliasing".
Reported-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
We recently moved glib detection code to meson but this changes the
linker command line from -lglib-2.0 to using a path to libglib-2.0.so.
This does not work for static linking, which is used by stress.c:
$ make V=1 tests/migration/initrd-stress.img
cc -m64 -mcx16 -o tests/migration/stress ... -static -Wl,--start-group
/usr/lib64/libglib-2.0.so -Wl,--end-group
...
bin/ld: attempted static link of dynamic object `/usr/lib64/libglib-2.0.so'
Add a specific dependency for stress.c, which is linked statically.
The compiler command line is now:
cc -m64 -mcx16 -o tests/migration/stress ... -static -pthread
-Wl,--start-group -lm /usr/lib64/libpcre.a -lglib-2.0 -Wl,--end-group
Fixes: fc9a809e0d ("build: move glib detection and workarounds to meson")
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Message-Id: <20230525212044.30222-3-farosas@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Apart from CLICOLOR_FORCE and GREP_OPTIONS, there are other variables
that are listed in the Autoconf manual. While Autoconf neutralizes them
very early, and assumes it does not (yet) run in a shell that has "unset",
QEMU assumes that the user invoked configure under a POSIX shell, and
therefore can simply use "unset" to clear them.
CDPATH is particularly nasty because it messes up "cd ... && pwd".
Reported-by: Juan Quintela <quintela@redhat.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
It is now the same as $(PYTHON), since the latter always points at pyvenv/bin/python3.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
ARCH is always empty, so just define HOST_ARCH as the result of uname.
The incorrect definition was not being used because the "ifeq" statement
is wrong; replace it with the same idiom based on $(realpath) that the
main Makefile uses.
With this change, vm-build-netbsd in a configured tree will not use
the PYTHONPATH hack.
Reported-by: John Snow <jsnow@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
ARCH is always empty, so just define HOST_ARCH as the result of uname.
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
- Constant formation improvements
- Replace MIPS_BE with HOST_BIG_ENDIAN
- General cleanups
tcg/riscv:
- Improve setcond
- Support movcond
- Support Zbb, Zba
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Merge tag 'pull-tcg-20230525' of https://gitlab.com/rth7680/qemu into staging
tcg/mips:
- Constant formation improvements
- Replace MIPS_BE with HOST_BIG_ENDIAN
- General cleanups
tcg/riscv:
- Improve setcond
- Support movcond
- Support Zbb, Zba
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# gpg: Signature made Thu 25 May 2023 11:07:21 AM PDT
# gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg: issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [ultimate]
* tag 'pull-tcg-20230525' of https://gitlab.com/rth7680/qemu: (23 commits)
tcg/riscv: Support CTZ, CLZ from Zbb
tcg/riscv: Implement movcond
tcg/riscv: Improve setcond expansion
tcg/riscv: Support CPOP from Zbb
tcg/riscv: Support REV8 from Zbb
tcg/riscv: Support rotates from Zbb
tcg/riscv: Use ADD.UW for guest address generation
tcg/riscv: Support ADD.UW, SEXT.B, SEXT.H, ZEXT.H from Zba+Zbb
tcg/riscv: Support ANDN, ORN, XNOR from Zbb
tcg/riscv: Probe for Zba, Zbb, Zicond extensions
disas/riscv: Decode czero.{eqz,nez}
tcg/mips: Replace MIPS_BE with HOST_BIG_ENDIAN
tcg/mips: Use qemu_build_not_reached for LO/HI_OFF
tcg/mips: Try three insns with shift and add in tcg_out_movi
tcg/mips: Try tb-relative addresses in tcg_out_movi
tcg/mips: Aggressively use the constant pool for n64 calls
tcg/mips: Use the constant pool for 64-bit constants
tcg/mips: Split out tcg_out_movi_two
tcg/mips: Split out tcg_out_movi_one
tcg/mips: Create and use TCG_REG_TB
...
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* purge qatomic_mb_read/set from monitor
* build system fixes
* OHCI fix from gitlab
* provide EPYC-Rome CPU model not susceptible to XSAVES erratum
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging
* hot-unplug fixes for ioport
* purge qatomic_mb_read/set from monitor
* build system fixes
* OHCI fix from gitlab
* provide EPYC-Rome CPU model not susceptible to XSAVES erratum
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# gpg: Signature made Thu 25 May 2023 01:21:37 AM PDT
# gpg: using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg: issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [undefined]
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [undefined]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# 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
* tag 'for-upstream' of https://gitlab.com/bonzini/qemu:
monitor: do not use mb_read/mb_set
monitor: extract request dequeuing to a new function
monitor: introduce qmp_dispatcher_co_wake
monitor: cleanup fetching of QMP requests
monitor: cleanup detection of qmp_dispatcher_co shutting down
monitor: do not use mb_read/mb_set for suspend_cnt
monitor: add more *_locked() functions
monitor: allow calling monitor_resume under mon_lock
monitor: use QEMU_LOCK_GUARD a bit more
softmmu/ioport.c: make MemoryRegionPortioList owner of portio_list MemoryRegions
softmmu/ioport.c: QOMify MemoryRegionPortioList
softmmu/ioport.c: allocate MemoryRegionPortioList ports on the heap
usb/ohci: Set pad to 0 after frame update
meson: move -no-pie from linker to compiler
meson: fix rule for qemu-ga installer
meson.build: Fix glib -Wno-unused-function workaround
target/i386: EPYC-Rome model without XSAVES
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Implement with and without Zicond. Without Zicond, we were letting
the middle-end expand to a 5 insn sequence; better to use a branch
over a single insn.
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Split out a helper function, tcg_out_setcond_int, which does not
always produce the complete boolean result, but returns a set of
flags to do so.
Based on 21af161984, the same improvement for loongarch64.
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The instruction is a combined zero-extend and add.
Use it for exactly that.
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Define a useful subset of the extensions. Probe for them
via compiler pre-processor feature macros and SIGILL.
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Since e03b56863d, which replaced HOST_WORDS_BIGENDIAN
with HOST_BIG_ENDIAN, there is no need to define a second
symbol which is [0,1].
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
These sequences are inexpensive to test. Maxing out at three insns
results in the same space as a load plus the constant pool entry.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
These addresses are often loaded by the qemu_ld/st slow path,
for loading the retaddr value.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Repeated calls to a single helper are common -- especially
the ones for softmmu memory access. Prefer the constant pool
to longer sequences to increase sharing.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
During normal processing, the constant pool is accessible via
TCG_REG_TB. During the prologue, it is accessible via TCG_REG_T9.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Emit all constants that can be loaded in exactly one insn.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This vastly reduces the size of code generated for 64-bit addresses.
The code for exit_tb, for instance, where we load a (tagged) pointer
to the current TB, goes from
0x400aa9725c: li v0,64
0x400aa97260: dsll v0,v0,0x10
0x400aa97264: ori v0,v0,0xaa9
0x400aa97268: dsll v0,v0,0x10
0x400aa9726c: j 0x400aa9703c
0x400aa97270: ori v0,v0,0x7083
to
0x400aa97240: j 0x400aa97040
0x400aa97244: daddiu v0,s6,-189
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
In tcg_out_qemu_ld/st, we already check for guest_base matching int16_t.
Mirror that when setting up TCG_GUEST_BASE_REG in the prologue.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
No functional change; just moving the saved reserved regs to the end.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
No functional change; just moving the saved reserved regs to the end.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Instead of relying on magic memory barriers, document the pattern that
is being used. It is the one based on Dekker's algorithm, and in this
case it is embodied as follows:
enqueue request; sleeping = true;
smp_mb(); smp_mb();
if (sleeping) kick(); if (!have a request) yield();
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Use a continue statement so that "after going to sleep" is treated the same
way as "after processing a request". Pull the monitor_lock critical
section out of monitor_qmp_requests_pop_any_with_lock() and protect
qmp_dispatcher_co_shutdown with the monitor_lock.
The two changes are complex to separate because monitor_qmp_dispatcher_co()
previously had a complicated logic to check for shutdown both before
and after going to sleep.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Instead of overloading qmp_dispatcher_co_busy, make the coroutine
pointer NULL. This will make things break spectacularly if somebody
tries to start a request after monitor_cleanup().
AIO_WAIT_WHILE_UNLOCKED() does not need qatomic_mb_read(), because
the macro contains all the necessary memory barriers.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Clean up monitor_event to just use monitor_suspend/monitor_resume,
using mon->mux_out to protect against incorrect nesting (especially
on startup).
The only remaining case of reading suspend_cnt is in the can_read
callback, which is just advisory and can use qatomic_read.
As an extra benefit, mux_out is now simply protected by mon_lock.
Also, moving the prompt to the beginning of the main loop removes
it from the output in some error cases where QEMU does not actually
start successfully. It is not a full fix and it would be nice to
also remove the monitor heading, but this is already a small (though
unintentional) improvement.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Allow flushing and printing to the monitor while mon->mon_lock is
held. This will help cleaning up the locking of mon->mux_out and
mon->suspend_cnt.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Move monitor_resume()'s call to readline_show_prompt() outside the
potentially locked section. Reuse the existing monitor_accept_input()
bottom half for this purpose.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Currently when portio_list MemoryRegions are freed using portio_list_destroy() the RCU
thread segfaults generating a backtrace similar to that below:
#0 0x5555599a34b6 in phys_section_destroy ../softmmu/physmem.c:996
#1 0x5555599a37a3 in phys_sections_free ../softmmu/physmem.c:1011
#2 0x5555599b24aa in address_space_dispatch_free ../softmmu/physmem.c:2430
#3 0x55555996a283 in flatview_destroy ../softmmu/memory.c:292
#4 0x55555a2cb9fb in call_rcu_thread ../util/rcu.c:284
#5 0x55555a29b71d in qemu_thread_start ../util/qemu-thread-posix.c:541
#6 0x7ffff4a0cea6 in start_thread nptl/pthread_create.c:477
#7 0x7ffff492ca2e in __clone (/lib/x86_64-linux-gnu/libc.so.6+0xfca2e)
The problem here is that portio_list_destroy() unparents the portio_list
MemoryRegions causing them to be freed immediately, however the flatview
still has a reference to the MemoryRegion and so causes a use-after-free
segfault when the RCU thread next updates the flatview.
Solve the lifetime issue by making MemoryRegionPortioList the owner of the
portio_list MemoryRegions, and then reparenting them to the portio_list
owner. This ensures that they can be accessed as QOM children via the
portio_list owner, yet the MemoryRegionPortioList owns the refcount.
Update portio_list_destroy() to unparent the MemoryRegion from the
portio_list owner (while keeping mrpio->mr live until finalization of the
MemoryRegionPortioList), so that the portio_list MemoryRegions remain
allocated until flatview_destroy() removes the final refcount upon the
next flatview update.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230419151652.362717-4-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The aim of QOMification is so that the lifetime of the MemoryRegionPortioList
structure can be managed using QOM's in-built refcounting instead of having to
handle this manually.
Due to the use of an opaque pointer it isn't possible to model the new
TYPE_MEMORY_REGION_PORTIO_LIST directly using QOM properties, however since
use of the new object is restricted to the portio API we can simply set the
opaque pointer (and the heap-allocated port list) internally.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230419151652.362717-3-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
In order to facilitate a conversion of MemoryRegionPortioList to a QOM object
move the allocation of MemoryRegionPortioList ports to the heap instead of
using a variable-length member at the end of the MemoryRegionPortioList
structure.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230419151652.362717-2-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
When the OHCI controller's framenumber is incremented, HccaPad1 register
should be set to zero (Ref OHCI Spec 4.4)
ReactOS uses hccaPad1 to determine if the OHCI hardware is running,
consequently it fails this check in current qemu master.
Signed-off-by: Ryan Wendland <wendland@live.com.au>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1048
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The large comment in the patch says it all; the -no-pie flag is broken and
this is why it was not included in QEMU_LDFLAGS before commit a988b4c561
("build: move remaining compiler flag tests to meson", 2023-05-18). And
some distros made things even worse, so we have to add it to the compiler
command line.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1664
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The bindir variable is not available in the "glib" variable, which is an internal
dependency (created with "declare_dependency"). Use glib_pc instead, which contains
the variable as it is instantiated from glib-2.0.pc.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
