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Commit1f7efaf89f("package/qemu: do not support x86_steamroller or x86_core_avx2") excluded BR2_x86_steamroller from BR2_PACKAGE_HOST_QEMU_ARCH_SUPPORTS. This is still needed, but for a different reason than AVX, and the exclusion is incomplete. steamroller is bdver3, and what the Qemu TCG engine cannot emulate there is not AVX, but the Bulldozer-specific XOP, FMA4, TBM and LWP extensions. In Qemu 11.0.0 (the version we currently package) and 11.1.1, target/i386/cpu.c has: #define TCG_EXT3_FEATURES (CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM | \ CPUID_EXT3_CR8LEG | CPUID_EXT3_ABM | CPUID_EXT3_SSE4A | \ CPUID_EXT3_3DNOWPREFETCH | CPUID_EXT3_KERNEL_FEATURES | \ CPUID_EXT3_CMP_LEG) CPUID_EXT3_XOP, CPUID_EXT3_FMA4, CPUID_EXT3_TBM and CPUID_EXT3_LWP are defined in target/i386/cpu.h, but are not part of that mask, i.e. TCG does not implement them. Binaries using those instructions therefore die with: qemu: uncaught target signal 4 (Illegal instruction) - core dumped This affects the whole Bulldozer family, not only steamroller: bulldozer (bdver1), piledriver (bdver2) and excavator (bdver4) are equally unsupported, but were never excluded. Use the newly introduced BR2_X86_CPU_HAS_XOP symbol, which covers all four variants, instead of listing BR2_x86_steamroller alone. As for AVX512, this disables gobject-introspection and nodejs, which are the two packages needing host-qemu in user mode. Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com> Assisted-by: Claude:claude-opus-5 Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> (cherry picked from commit22c0ec4fcf) Signed-off-by: Raphaël Mélotte <raphael.melotte@mind.be>
110 lines
3.4 KiB
Plaintext
110 lines
3.4 KiB
Plaintext
config BR2_PACKAGE_HOST_QEMU_ARCH_SUPPORTS
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bool
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default y if BR2_arm
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default y if BR2_armeb
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default y if BR2_aarch64
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default y if BR2_i386
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default y if BR2_m68k
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default y if BR2_microblazeel
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default y if BR2_microblazebe
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default y if BR2_mips
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default y if BR2_mipsel
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default y if BR2_or1k
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default y if BR2_powerpc
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default y if BR2_powerpc64
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default y if BR2_powerpc64le
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default y if BR2_riscv
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default y if BR2_s390x
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default y if BR2_sh
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default y if BR2_sparc
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default y if BR2_sparc64
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default y if BR2_xtensa
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default y if BR2_x86_64
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# The Qemu TCG engine implements neither the XOP instruction set
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# nor the other Bulldozer-specific extensions (FMA4, TBM, LWP),
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# and it does not implement the AVX512 instruction set either,
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# so binaries built for such CPUs cannot be emulated.
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depends on !BR2_X86_CPU_HAS_XOP
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depends on !BR2_X86_CPU_HAS_AVX512
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depends on !BR2_powerpc_620 && !BR2_powerpc_630
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config BR2_PACKAGE_HOST_QEMU_SYSTEM_ARCH_SUPPORTS
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bool
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default y if BR2_PACKAGE_HOST_QEMU_ARCH_SUPPORTS
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default y if BR2_mips64
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default y if BR2_mips64el
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config BR2_PACKAGE_HOST_QEMU_USER_ARCH_SUPPORTS
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bool
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default y if BR2_PACKAGE_HOST_QEMU_ARCH_SUPPORTS
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comment "host-qemu needs a host gcc >= 8"
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depends on BR2_PACKAGE_HOST_QEMU_SYSTEM_ARCH_SUPPORTS || \
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BR2_PACKAGE_HOST_QEMU_USER_ARCH_SUPPORT
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depends on !BR2_HOST_GCC_AT_LEAST_8
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config BR2_PACKAGE_HOST_QEMU
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bool "host qemu"
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depends on BR2_PACKAGE_HOST_QEMU_SYSTEM_ARCH_SUPPORTS || BR2_PACKAGE_HOST_QEMU_USER_ARCH_SUPPORTS
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depends on BR2_HOST_GCC_AT_LEAST_8
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select BR2_PACKAGE_HOST_QEMU_LINUX_USER_MODE \
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if !BR2_PACKAGE_HOST_QEMU_SYSTEM_MODE && BR2_PACKAGE_HOST_QEMU_USER_ARCH_SUPPORTS
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select BR2_PACKAGE_HOST_QEMU_SYSTEM_MODE \
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if !BR2_PACKAGE_HOST_QEMU_USER_ARCH_SUPPORTS
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help
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QEMU is a generic and open source machine emulator and
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virtualizer.
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This option builds an emulator for your selected architecture.
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http://www.qemu.org
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if BR2_PACKAGE_HOST_QEMU
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comment "Emulators selection"
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config BR2_PACKAGE_HOST_QEMU_SYSTEM_MODE
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bool "Enable system emulation"
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depends on BR2_PACKAGE_HOST_QEMU_SYSTEM_ARCH_SUPPORTS
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help
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Enables the build of the system emulator, which allows to
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boot an entire system in Qemu.
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config BR2_PACKAGE_HOST_QEMU_LINUX_USER_MODE
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bool "Enable Linux user-land emulation"
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depends on BR2_PACKAGE_HOST_QEMU_USER_ARCH_SUPPORTS
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help
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Enables the build of the user-land emulator, which allows to
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run user-space applications.
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Note that system calls made by the emulated user-land are
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serviced by the running host kernel. Therefore, if the
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kernel headers used by your target are more recent than
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the running host kernel, you may run into invalid system
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calls, which may yield surprising effects.
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config BR2_PACKAGE_HOST_QEMU_USER_MODE_ARGS
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string
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default "-cpu Nehalem,check=false" if BR2_x86_corei7
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config BR2_PACKAGE_HOST_QEMU_VDE2
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bool "VDE2 support"
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help
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Enables VDE2 support. VDE2 stands for Virtual Distributed
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Ethernet and can be used to create virtual switches to
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"plug" both physical and virtual machines in them.
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config BR2_PACKAGE_HOST_QEMU_VIRTFS
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bool "Virtual filesystem support"
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depends on BR2_PACKAGE_HOST_QEMU_SYSTEM_MODE
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help
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Enables support for virtual filesystem in Qemu allowing
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shared filesystem between Qemu and its emulated target.
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config BR2_PACKAGE_HOST_QEMU_USB
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bool "USB passthrough support"
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help
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Enables USB passthrough support from guest to host.
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endif
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