Now that we use a functional interface to query whether the opcode
is supported, we can drop the TCG_OPF_NOT_PRESENT bit mapping from
TCG_TARGET_HAS_foo in tcg-opc.h
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Pass TCGOp.type to the output function.
For aarch64 and tci, use this instead of testing TCG_OPF_64BIT.
For s390x, use this instead of testing INDEX_op_deposit_i64.
For i386, use this to initialize rexw.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Allow the backend to make constraint choices based on more parameters.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The br, mb, goto_tb and exit_tb opcodes do not have
register operands, only constants, flags, or labels.
Remove the special case in opcode_args_ct by including
TCG_OPF_NOT_PRESENT in the flags for these opcodes.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
We should have checked that the op is supported before
emitting it. The backend cannot be expected to have a
constraint set for unsupported ops.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Now that we're no longer assigning to TCGOpDef.args_ct,
we can make the array constant.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Introduce a new function, opcode_args_ct, to look up the argument
set for an opcode. We lose the ability to assert the correctness
of the map from TCGOpcode to constraint sets at startup, but we can
still validate at runtime upon lookup.
Rename process_op_defs to process_constraint_sets, as it now does
nothing to TCGOpDef.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Process each TCGConstraintSetIndex first. Allocate TCGArgConstraint
arrays based on those. Only afterward process the TCGOpcodes and
share those TCGArgConstraint arrays.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Test each vector type, not just lumping them all together.
Add tests for I32 (always true) and I64 (64-bit hosts).
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Return C_NotImplemented instead of asserting for opcodes
not implemented by the backend. For now, the assertion
moves to process_op_defs.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
TCG_TARGET_HAS_* definitions don't need to be exposed
by "tcg/tcg.h". Only include 'tcg-has.h' when necessary.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250108215156.8731-15-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250108215156.8731-14-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250108215156.8731-13-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250108215156.8731-12-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250108215156.8731-11-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250108215156.8731-10-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250108215156.8731-9-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250108215156.8731-8-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250108215156.8731-7-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250108215156.8731-6-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250108215156.8731-5-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250108215156.8731-4-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250108215156.8731-3-philmd@linaro.org>
Don't reference TCG_TARGET_MAYBE_vec in a public header.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Now that tcg-target-opc.h.inc is unconditional,
we can move these out of the generic header.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
In addition, add empty files for mips, sparc64 and tci.
Make the include unconditional within tcg-opc.h.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Make these features unconditional, as they're used by most
tcg backends anyway. Merge tcg-ldst.c.inc and tcg-pool.c.inc
into tcg.c and mark some of the functions unused, so that
when the features are not used we won't get Werrors.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Do not reference TCG_TARGET_HAS_* directly.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Avoid direct usage of TCG_TARGET_deposit_*_valid.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Do not reference TCG_TARGET_HAS_* directly.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Do not reference TCG_TARGET_HAS_* directly.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Rely on tcg-op-vec.c to expand the opcode if missing.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
To be used by some integer operations instead of,
or in addition to, a trailing constant argument.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Simplify use within the optimizers by defaulting the
new opcode to the same type as the old opcode.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
These are not particularly useful outside of optimization passes.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
In the replacement, drop the TCGType - TCG_TYPE_V64 adjustment,
except for the call to tcg_out_vec_op. Pass type to tcg_gen_op[1-6],
so that all integer opcodes gain the type.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
These defines are not required outside of tcg/tcg.c,
which includes tcg-target.c.inc before use.
Reduces the exported symbol set of tcg-target.h.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
For riscv host, it will set dec->cfg to zero. Thus we shuld guard
the dec->cfg deference for riscv host disassemble.
And in general, we should only use dec->cfg for target in three cases:
1) For not incompatible encodings, such as zcmp/zcmt/zfinx.
2) For maybe-ops encodings, they are better to be disassembled to
the "real" extensions, such as zicfiss. The guard of dec->zimop
and dec->zcmop is for comment and avoid check for every extension
that encoded in maybe-ops area.
3) For custom encodings, we have to use dec->cfg to disassemble
custom encodings using the same encoding area.
Signed-off-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20241206032411.52528-1-zhiwei_liu@linux.alibaba.com>
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Merge tag 'pull-xenfv-20250116' of git://git.infradead.org/users/dwmw2/qemu into staging
Xen regression fixes and cleanups
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# gpg: Signature made Thu 16 Jan 2025 03:40:55 EST
# gpg: using RSA key 314B08ACD0DE481133A5F2869BE980FD0AC01544
# gpg: issuer "dwmw@amazon.co.uk"
# gpg: Good signature from "David Woodhouse <dwmw@amazon.co.uk>" [unknown]
# gpg: aka "David Woodhouse <dwmw@amazon.com>" [unknown]
# gpg: WARNING: The key's User ID is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 314B 08AC D0DE 4811 33A5 F286 9BE9 80FD 0AC0 1544
* tag 'pull-xenfv-20250116' of git://git.infradead.org/users/dwmw2/qemu:
system/runstate: Fix regression, clarify BQL status of exit notifiers
hw/xen: Fix errp handling in xen_console
hw/xen: Use xs_node_read() from xenstore_read_str() instead of open-coding it
hw/xen: Use xs_node_read() from xen_netdev_get_name()
hw/xen: Use xs_node_read() from xen_console_get_name()
hw/xen: Use xs_node_read() from xs_node_vscanf()
xen: do not use '%ms' scanf specifier
hw/xen: Add xs_node_read() helper function
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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Merge tag 'pull-loongarch-20250116' of https://gitlab.com/bibo-mao/qemu into staging
loongarch queue
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# gpg: Signature made Wed 15 Jan 2025 20:46:37 EST
# gpg: using EDDSA key 0D8642A3A2659F80B0B3D1A41F7B0C1251ACE7D1
# gpg: Good signature from "bibo mao <maobibo@loongson.cn>" [unknown]
# 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: 7044 3A00 19C0 E97A 31C7 13C4 8E86 8FB7 A176 9D4C
# Subkey fingerprint: 0D86 42A3 A265 9F80 B0B3 D1A4 1F7B 0C12 51AC E7D1
* tag 'pull-loongarch-20250116' of https://gitlab.com/bibo-mao/qemu:
hw/intc/loongarch_ipi: Use alternative implemation for cpu_by_arch_id
hw/intc/loongson_ipi: Add more input parameter for cpu_by_arch_id
hw/intc/loongarch_ipi: Remove property num-cpu
hw/intc/loongarch_ipi: Get cpu number from possible_cpu_arch_ids
hw/intc/loongson_ipi: Remove property num_cpu from loongson_ipi_common
hw/intc/loongson_ipi: Remove num_cpu from loongson_ipi_common
hw/intc/loongarch_ipi: Implement realize interface
target/loongarch: Add page table walker support for debugger usage
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The big thing here are:
stage-1 translation in vtd
internal migration in vhost-user
ghes driver preparation for error injection
new resource uuid feature in virtio gpu
new vmclock device
And as usual, fixes and cleanups.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging
virtio,pc,pci: features, fixes, cleanups
The big thing here are:
stage-1 translation in vtd
internal migration in vhost-user
ghes driver preparation for error injection
new resource uuid feature in virtio gpu
new vmclock device
And as usual, fixes and cleanups.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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# gpg: Signature made Wed 15 Jan 2025 17:43:46 EST
# gpg: using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg: issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>" [full]
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67
# Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469
* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (49 commits)
hw/acpi: Add vmclock device
virtio-net: vhost-user: Implement internal migration
vhost: Add stubs for the migration state transfer interface
hw/cxl: Fix msix_notify: Assertion `vector < dev->msix_entries_nr`
tests: acpi: update expected blobs
pci: acpi: Windows 'PCI Label Id' bug workaround
tests: acpi: whitelist expected blobs
docs: acpi_hest_ghes: fix documentation for CPER size
acpi/ghes: Change ghes fill logic to work with only one source
acpi/ghes: move offset calculus to a separate function
acpi/ghes: better name the offset of the hardware error firmware
acpi/ghes: rename etc/hardware_error file macros
acpi/ghes: don't crash QEMU if ghes GED is not found
acpi/ghes: better name GHES memory error function
acpi/ghes: make the GHES record generation more generic
acpi/ghes: don't check if physical_address is not zero
acpi/ghes: Change the type for source_id
acpi/ghes: Remove a duplicated out of bounds check
acpi/ghes: Fix acpi_ghes_record_errors() argument
acpi/ghes: better handle source_id and notification
...
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The vmclock device addresses the problem of live migration with
precision clocks. The tolerances of a hardware counter (e.g. TSC) are
typically around ±50PPM. A guest will use NTP/PTP/PPS to discipline that
counter against an external source of 'real' time, and track the precise
frequency of the counter as it changes with environmental conditions.
When a guest is live migrated, anything it knows about the frequency of
the underlying counter becomes invalid. It may move from a host where
the counter running at -50PPM of its nominal frequency, to a host where
it runs at +50PPM. There will also be a step change in the value of the
counter, as the correctness of its absolute value at migration is
limited by the accuracy of the source and destination host's time
synchronization.
The device exposes a shared memory region to guests, which can be mapped
all the way to userspace. In the first phase, this merely advertises a
'disruption_marker', which indicates that the guest should throw away any
NTP synchronization it thinks it has, and start again.
Because the region can be exposed all the way to userspace, applications
can still use time from a fast vDSO 'system call', and check the
disruption marker to be sure that their timestamp is indeed truthful.
The structure also allows for the precise time, as known by the host, to
be exposed directly to guests so that they don't have to wait for NTP to
resync from scratch.
The values and fields are based on the nascent virtio-rtc specification,
and the intent is that a version (hopefully precisely this version) of
this structure will be included as an optional part of that spec. In the
meantime, a simple ACPI device along the lines of VMGENID is perfectly
sufficient and is compatible with what's being shipped in certain
commercial hypervisors.
Linux guest support was merged into the 6.13-rc1 kernel:
https://git.kernel.org/torvalds/c/205032724226
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
Message-Id: <07fd5e2f529098ad4d7cab1423fe9f4a03a9cc14.camel@infradead.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Add support of VHOST_USER_PROTOCOL_F_DEVICE_STATE in virtio-net
with vhost-user backend.
Cc: Hanna Czenczek <hreitz@redhat.com>
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Message-Id: <20250115135044.799698-3-lvivier@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Migration state transfer interface is only used by vhost-user-fs,
so the interface needs to be defined only when vhost is built.
But I need to use this interface with virtio-net and vhost is not always
enabled, and to avoid undefined reference error during build, define stub
functions for vhost_supports_device_state(), vhost_save_backend_state() and
vhost_load_backend_state().
Cc: Hanna Czenczek <hreitz@redhat.com>
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Message-Id: <20250115135044.799698-2-lvivier@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
