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RISC-V: KVM: Allow Guest use Svinval extension

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We should advertise Svinval ISA extension to KVM user-space whenever
host supports it. This will allow KVM user-space (i.e. QEMU or KVMTOOL)
to pass on this information to Guest via ISA string.

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 2022-10-02 10:18:42 +05:30 committed by Anup Patel
parent 5ff112484f
commit bad6ea07c8
2 changed files with 3 additions and 0 deletions
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1
arch/riscv/include/uapi/asm/kvm.h
View File

@ -98,6 +98,7 @@ enum KVM_RISCV_ISA_EXT_ID {
KVM_RISCV_ISA_EXT_M,
KVM_RISCV_ISA_EXT_SVPBMT,
KVM_RISCV_ISA_EXT_SSTC,
KVM_RISCV_ISA_EXT_SVINVAL,
KVM_RISCV_ISA_EXT_MAX,
};

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

@ -53,6 +53,7 @@ static const unsigned long kvm_isa_ext_arr[] = {
RISCV_ISA_EXT_m,
RISCV_ISA_EXT_SVPBMT,
RISCV_ISA_EXT_SSTC,
RISCV_ISA_EXT_SVINVAL,
};
static unsigned long kvm_riscv_vcpu_base2isa_ext(unsigned long base_ext)
@ -87,6 +88,7 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext)
case KVM_RISCV_ISA_EXT_I:
case KVM_RISCV_ISA_EXT_M:
case KVM_RISCV_ISA_EXT_SSTC:
case KVM_RISCV_ISA_EXT_SVINVAL:
return false;
default:
break;