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RISC-V: KVM: Allow Zimop extension for Guest/VM 

Extend the KVM ISA extension ONE_REG interface to allow KVM user space
to detect and enable Zimop extension for Guest/VM.

Signed-off-by: Clément Léger <cleger@rivosinc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Acked-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20240619113529.676940-5-cleger@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
pull/815/merge
Clément Léger 2024-06-19 13:35:14 +02:00 committed by Palmer Dabbelt
parent 36f8960de8
commit fb2a3d63ef
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2 changed files with 3 additions and 0 deletions
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1
arch/riscv/include/uapi/asm/kvm.h
View File

@ -168,6 +168,7 @@ enum KVM_RISCV_ISA_EXT_ID {
KVM_RISCV_ISA_EXT_ZTSO,
KVM_RISCV_ISA_EXT_ZACAS,
KVM_RISCV_ISA_EXT_SSCOFPMF,
KVM_RISCV_ISA_EXT_ZIMOP,
KVM_RISCV_ISA_EXT_MAX,
};

2
arch/riscv/kvm/vcpu_onereg.c
View File

@ -61,6 +61,7 @@ static const unsigned long kvm_isa_ext_arr[] = {
KVM_ISA_EXT_ARR(ZIHINTNTL),
KVM_ISA_EXT_ARR(ZIHINTPAUSE),
KVM_ISA_EXT_ARR(ZIHPM),
KVM_ISA_EXT_ARR(ZIMOP),
KVM_ISA_EXT_ARR(ZKND),
KVM_ISA_EXT_ARR(ZKNE),
KVM_ISA_EXT_ARR(ZKNH),
@ -143,6 +144,7 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext)
case KVM_RISCV_ISA_EXT_ZIHINTNTL:
case KVM_RISCV_ISA_EXT_ZIHINTPAUSE:
case KVM_RISCV_ISA_EXT_ZIHPM:
case KVM_RISCV_ISA_EXT_ZIMOP:
case KVM_RISCV_ISA_EXT_ZKND:
case KVM_RISCV_ISA_EXT_ZKNE:
case KVM_RISCV_ISA_EXT_ZKNH: