On 2/3/25 04:18, Richard Henderson wrote:
v1: 20250128004254.33442-1-richard.hender...@linaro.org
For v2, immediately disable 64-on-32 TCG.
I *suspect* that we should disable 64-on-32 for *all* accelerators.
The idea that an i686 binary on an x86_64 host may be used to spawn
an x86_64 guest via kvm is silly and a bit more than niche.
At least Xen used to be commonly used with 32-bit dom0, because it saved
memory and dom0 would map in guest buffers as needed. I'm not sure how
common that is these days, perhaps Stefano knows.
For KVM however I don't think anyone cares.
Paolo
Similarly for mips32 spawning mips64 and ppc32 spawning ppc64.
But in the meantime, jump through a couple of hoops to keep these
kvm and xen cases building, while disabling tcg in the same binaries.
Richard Henderson (14):
meson: Drop tcg as a module
tcg: Move stubs in tcg/perf.h to tcg/perf-stubs.c
plugins: Uninline qemu_plugin_add_opts
meson: Introduce CONFIG_TCG_TARGET
tcg: Link only when required in system mode
plugins: Link only when required in system mode
accel/stubs: Expand stubs for TCG
target/mips: Protect objects with CONFIG_TCG
gitlab: Replace aarch64 with arm in cross-i686-tci build
configure: Define TARGET_LONG_BITS in configs/targets/*.mak
target/*: Remove TARGET_LONG_BITS from cpu-param.h
meson: Disallow 64-bit on 32-bit TCG emulation
meson: Deprecate 32-bit host support
tcg: Remove TCG_OVERSIZED_GUEST
include/qemu/atomic.h | 18 ++------
include/qemu/osdep.h | 7 +++
include/qemu/plugin.h | 9 +---
include/tcg/oversized-guest.h | 23 ----------
include/tcg/perf.h | 23 ----------
target/alpha/cpu-param.h | 2 -
target/arm/cpu-param.h | 2 -
target/avr/cpu-param.h | 1 -
target/hexagon/cpu-param.h | 1 -
target/hppa/cpu-param.h | 2 -
target/i386/cpu-param.h | 2 -
target/loongarch/cpu-param.h | 1 -
target/m68k/cpu-param.h | 1 -
target/microblaze/cpu-param.h | 2 -
target/mips/cpu-param.h | 5 ---
target/openrisc/cpu-param.h | 1 -
target/ppc/cpu-param.h | 2 -
target/riscv/cpu-param.h | 2 -
target/rx/cpu-param.h | 1 -
target/s390x/cpu-param.h | 1 -
target/sh4/cpu-param.h | 1 -
target/sparc/cpu-param.h | 2 -
target/tricore/cpu-param.h | 1 -
target/xtensa/cpu-param.h | 1 -
accel/stubs/tcg-stub.c | 24 ++++++++++
accel/tcg/cputlb.c | 7 ---
accel/tcg/tcg-all.c | 9 ++--
plugins/loader.c | 7 ++-
plugins/stubs.c | 49 +++++++++++++++++++++
target/arm/ptw.c | 34 --------------
target/riscv/cpu_helper.c | 13 +-----
tcg/perf-stubs.c | 26 +++++++++++
.gitlab-ci.d/crossbuilds.yml | 2 +-
accel/tcg/meson.build | 11 ++---
configs/targets/aarch64-bsd-user.mak | 1 +
configs/targets/aarch64-linux-user.mak | 1 +
configs/targets/aarch64-softmmu.mak | 1 +
configs/targets/aarch64_be-linux-user.mak | 1 +
configs/targets/alpha-linux-user.mak | 1 +
configs/targets/alpha-softmmu.mak | 1 +
configs/targets/arm-bsd-user.mak | 1 +
configs/targets/arm-linux-user.mak | 1 +
configs/targets/arm-softmmu.mak | 1 +
configs/targets/armeb-linux-user.mak | 1 +
configs/targets/avr-softmmu.mak | 1 +
configs/targets/hexagon-linux-user.mak | 1 +
configs/targets/hppa-linux-user.mak | 2 +
configs/targets/hppa-softmmu.mak | 1 +
configs/targets/i386-bsd-user.mak | 1 +
configs/targets/i386-linux-user.mak | 1 +
configs/targets/i386-softmmu.mak | 1 +
configs/targets/loongarch64-linux-user.mak | 1 +
configs/targets/loongarch64-softmmu.mak | 1 +
configs/targets/m68k-linux-user.mak | 1 +
configs/targets/m68k-softmmu.mak | 1 +
configs/targets/microblaze-linux-user.mak | 1 +
configs/targets/microblaze-softmmu.mak | 3 ++
configs/targets/microblazeel-linux-user.mak | 1 +
configs/targets/microblazeel-softmmu.mak | 3 ++
configs/targets/mips-linux-user.mak | 1 +
configs/targets/mips-softmmu.mak | 1 +
configs/targets/mips64-linux-user.mak | 1 +
configs/targets/mips64-softmmu.mak | 1 +
configs/targets/mips64el-linux-user.mak | 1 +
configs/targets/mips64el-softmmu.mak | 1 +
configs/targets/mipsel-linux-user.mak | 1 +
configs/targets/mipsel-softmmu.mak | 1 +
configs/targets/mipsn32-linux-user.mak | 1 +
configs/targets/mipsn32el-linux-user.mak | 1 +
configs/targets/or1k-linux-user.mak | 1 +
configs/targets/or1k-softmmu.mak | 1 +
configs/targets/ppc-linux-user.mak | 1 +
configs/targets/ppc-softmmu.mak | 1 +
configs/targets/ppc64-linux-user.mak | 1 +
configs/targets/ppc64-softmmu.mak | 1 +
configs/targets/ppc64le-linux-user.mak | 1 +
configs/targets/riscv32-linux-user.mak | 1 +
configs/targets/riscv32-softmmu.mak | 1 +
configs/targets/riscv64-bsd-user.mak | 1 +
configs/targets/riscv64-linux-user.mak | 1 +
configs/targets/riscv64-softmmu.mak | 1 +
configs/targets/rx-softmmu.mak | 1 +
configs/targets/s390x-linux-user.mak | 1 +
configs/targets/s390x-softmmu.mak | 1 +
configs/targets/sh4-linux-user.mak | 1 +
configs/targets/sh4-softmmu.mak | 1 +
configs/targets/sh4eb-linux-user.mak | 1 +
configs/targets/sh4eb-softmmu.mak | 1 +
configs/targets/sparc-linux-user.mak | 1 +
configs/targets/sparc-softmmu.mak | 1 +
configs/targets/sparc32plus-linux-user.mak | 1 +
configs/targets/sparc64-linux-user.mak | 1 +
configs/targets/sparc64-softmmu.mak | 1 +
configs/targets/tricore-softmmu.mak | 1 +
configs/targets/x86_64-bsd-user.mak | 1 +
configs/targets/x86_64-linux-user.mak | 1 +
configs/targets/x86_64-softmmu.mak | 1 +
configs/targets/xtensa-linux-user.mak | 1 +
configs/targets/xtensa-softmmu.mak | 1 +
configs/targets/xtensaeb-linux-user.mak | 1 +
configs/targets/xtensaeb-softmmu.mak | 1 +
docs/about/deprecated.rst | 7 +++
docs/devel/multi-thread-tcg.rst | 1 -
meson.build | 47 +++++++++-----------
plugins/meson.build | 5 ++-
target/mips/tcg/meson.build | 4 +-
target/mips/tcg/system/meson.build | 6 +--
tcg/meson.build | 8 +++-
108 files changed, 241 insertions(+), 202 deletions(-)
delete mode 100644 include/tcg/oversized-guest.h
create mode 100644 plugins/stubs.c
create mode 100644 tcg/perf-stubs.c
