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2613c15b0c
Charlie Jenkins <charlie@rivosinc.com> says:
xtheadvector is a custom extension that is based upon riscv vector
version 0.7.1 [1]. All of the vector routines have been modified to
support this alternative vector version based upon whether xtheadvector
was determined to be supported at boot.
vlenb is not supported on the existing xtheadvector hardware, so a
devicetree property thead,vlenb is added to provide the vlenb to Linux.
There is a new hwprobe key RISCV_HWPROBE_KEY_VENDOR_EXT_THEAD_0 that is
used to request which thead vendor extensions are supported on the
current platform. This allows future vendors to allocate hwprobe keys
for their vendor.
Support for xtheadvector is also added to the vector kselftests.
[1] 95358cb2cc/xtheadvector.adoc
* b4-shazam-merge:
riscv: Add ghostwrite vulnerability
selftests: riscv: Support xtheadvector in vector tests
selftests: riscv: Fix vector tests
riscv: hwprobe: Document thead vendor extensions and xtheadvector extension
riscv: hwprobe: Add thead vendor extension probing
riscv: vector: Support xtheadvector save/restore
riscv: Add xtheadvector instruction definitions
riscv: csr: Add CSR encodings for CSR_VXRM/CSR_VXSAT
RISC-V: define the elements of the VCSR vector CSR
riscv: vector: Use vlenb from DT for thead
riscv: Add thead and xtheadvector as a vendor extension
riscv: dts: allwinner: Add xtheadvector to the D1/D1s devicetree
dt-bindings: cpus: add a thead vlen register length property
dt-bindings: riscv: Add xtheadvector ISA extension description
Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Link: https://lore.kernel.org/r/20241113-xtheadvector-v11-0-236c22791ef9@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
128 lines
3.6 KiB
Makefile
128 lines
3.6 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0-only
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#
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# Makefile for the RISC-V Linux kernel
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#
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ifdef CONFIG_FTRACE
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CFLAGS_REMOVE_ftrace.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_patch.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_sbi.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_return_address.o = $(CC_FLAGS_FTRACE)
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endif
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CFLAGS_syscall_table.o += $(call cc-option,-Wno-override-init,)
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CFLAGS_compat_syscall_table.o += $(call cc-option,-Wno-override-init,)
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ifdef CONFIG_KEXEC_CORE
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AFLAGS_kexec_relocate.o := -mcmodel=medany $(call cc-option,-mno-relax)
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endif
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# cmodel=medany and notrace when patching early
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ifdef CONFIG_RISCV_ALTERNATIVE_EARLY
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CFLAGS_alternative.o := -mcmodel=medany
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CFLAGS_cpufeature.o := -mcmodel=medany
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CFLAGS_sbi_ecall.o := -mcmodel=medany
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ifdef CONFIG_FTRACE
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CFLAGS_REMOVE_alternative.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_cpufeature.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_sbi_ecall.o = $(CC_FLAGS_FTRACE)
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endif
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ifdef CONFIG_RELOCATABLE
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CFLAGS_alternative.o += -fno-pie
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CFLAGS_cpufeature.o += -fno-pie
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CFLAGS_sbi_ecall.o += -fno-pie
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endif
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ifdef CONFIG_KASAN
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KASAN_SANITIZE_alternative.o := n
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KASAN_SANITIZE_cpufeature.o := n
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KASAN_SANITIZE_sbi_ecall.o := n
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endif
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ifdef CONFIG_FORTIFY_SOURCE
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CFLAGS_alternative.o += -D__NO_FORTIFY
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CFLAGS_cpufeature.o += -D__NO_FORTIFY
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CFLAGS_sbi_ecall.o += -D__NO_FORTIFY
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endif
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endif
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extra-y += vmlinux.lds
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obj-y += head.o
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obj-y += soc.o
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obj-$(CONFIG_RISCV_ALTERNATIVE) += alternative.o
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obj-y += cpu.o
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obj-y += cpufeature.o
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obj-y += entry.o
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obj-y += irq.o
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obj-y += process.o
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obj-y += ptrace.o
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obj-y += reset.o
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obj-y += return_address.o
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obj-y += setup.o
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obj-y += signal.o
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obj-y += syscall_table.o
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obj-y += sys_riscv.o
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obj-y += sys_hwprobe.o
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obj-y += time.o
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obj-y += traps.o
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obj-y += riscv_ksyms.o
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obj-y += stacktrace.o
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obj-y += cacheinfo.o
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obj-y += patch.o
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obj-y += vendor_extensions.o
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obj-y += vendor_extensions/
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obj-y += probes/
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obj-y += tests/
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obj-$(CONFIG_MMU) += vdso.o vdso/
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obj-$(CONFIG_RISCV_MISALIGNED) += traps_misaligned.o
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obj-$(CONFIG_RISCV_MISALIGNED) += unaligned_access_speed.o
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obj-$(CONFIG_RISCV_PROBE_UNALIGNED_ACCESS) += copy-unaligned.o
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obj-$(CONFIG_RISCV_PROBE_VECTOR_UNALIGNED_ACCESS) += vec-copy-unaligned.o
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obj-$(CONFIG_FPU) += fpu.o
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obj-$(CONFIG_FPU) += kernel_mode_fpu.o
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obj-$(CONFIG_RISCV_ISA_V) += vector.o
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obj-$(CONFIG_RISCV_ISA_V) += kernel_mode_vector.o
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obj-$(CONFIG_SMP) += smpboot.o
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obj-$(CONFIG_SMP) += smp.o
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obj-$(CONFIG_SMP) += cpu_ops.o
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obj-$(CONFIG_RISCV_BOOT_SPINWAIT) += cpu_ops_spinwait.o
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obj-$(CONFIG_MODULES) += module.o
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obj-$(CONFIG_MODULE_SECTIONS) += module-sections.o
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obj-$(CONFIG_CPU_PM) += suspend_entry.o suspend.o
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obj-$(CONFIG_HIBERNATION) += hibernate.o hibernate-asm.o
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obj-$(CONFIG_FUNCTION_TRACER) += mcount.o ftrace.o
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obj-$(CONFIG_DYNAMIC_FTRACE) += mcount-dyn.o
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obj-$(CONFIG_PERF_EVENTS) += perf_callchain.o
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obj-$(CONFIG_HAVE_PERF_REGS) += perf_regs.o
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obj-$(CONFIG_RISCV_SBI) += sbi.o sbi_ecall.o
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ifeq ($(CONFIG_RISCV_SBI), y)
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obj-$(CONFIG_SMP) += sbi-ipi.o
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obj-$(CONFIG_SMP) += cpu_ops_sbi.o
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endif
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obj-$(CONFIG_HOTPLUG_CPU) += cpu-hotplug.o
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obj-$(CONFIG_PARAVIRT) += paravirt.o
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obj-$(CONFIG_KGDB) += kgdb.o
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obj-$(CONFIG_KEXEC_CORE) += kexec_relocate.o crash_save_regs.o machine_kexec.o
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obj-$(CONFIG_KEXEC_FILE) += elf_kexec.o machine_kexec_file.o
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obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
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obj-$(CONFIG_VMCORE_INFO) += vmcore_info.o
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obj-$(CONFIG_JUMP_LABEL) += jump_label.o
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obj-$(CONFIG_CFI_CLANG) += cfi.o
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obj-$(CONFIG_EFI) += efi.o
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obj-$(CONFIG_COMPAT) += compat_syscall_table.o
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obj-$(CONFIG_COMPAT) += compat_signal.o
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obj-$(CONFIG_COMPAT) += compat_vdso/
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obj-$(CONFIG_64BIT) += pi/
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obj-$(CONFIG_ACPI) += acpi.o
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obj-$(CONFIG_ACPI_NUMA) += acpi_numa.o
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obj-$(CONFIG_GENERIC_CPU_VULNERABILITIES) += bugs.o
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