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RISC-V: KVM: Allow Zfh[min] extensions for Guest/VM

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We extend the KVM ISA extension ONE_REG interface to allow KVM
user space to detect and enable Zfh[min] extensions for Guest/VM.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Anup Patel 2023-11-27 22:01:55 +05:30 committed by Anup Patel
parent 2ddf79070f
commit f3901ece5b
2 changed files with 6 additions and 0 deletions
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2
arch/riscv/include/uapi/asm/kvm.h
View File

@ -160,6 +160,8 @@ enum KVM_RISCV_ISA_EXT_ID {
KVM_RISCV_ISA_EXT_ZVKSED,
KVM_RISCV_ISA_EXT_ZVKSH,
KVM_RISCV_ISA_EXT_ZVKT,
KVM_RISCV_ISA_EXT_ZFH,
KVM_RISCV_ISA_EXT_ZFHMIN,
KVM_RISCV_ISA_EXT_MAX,
};

4
arch/riscv/kvm/vcpu_onereg.c
View File

@ -47,6 +47,8 @@ static const unsigned long kvm_isa_ext_arr[] = {
KVM_ISA_EXT_ARR(ZBKC),
KVM_ISA_EXT_ARR(ZBKX),
KVM_ISA_EXT_ARR(ZBS),
KVM_ISA_EXT_ARR(ZFH),
KVM_ISA_EXT_ARR(ZFHMIN),
KVM_ISA_EXT_ARR(ZICBOM),
KVM_ISA_EXT_ARR(ZICBOZ),
KVM_ISA_EXT_ARR(ZICNTR),
@ -118,6 +120,8 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext)
case KVM_RISCV_ISA_EXT_ZBKC:
case KVM_RISCV_ISA_EXT_ZBKX:
case KVM_RISCV_ISA_EXT_ZBS:
case KVM_RISCV_ISA_EXT_ZFH:
case KVM_RISCV_ISA_EXT_ZFHMIN:
case KVM_RISCV_ISA_EXT_ZICNTR:
case KVM_RISCV_ISA_EXT_ZICOND:
case KVM_RISCV_ISA_EXT_ZICSR: