diff options
| author | Anup Patel <apatel@ventanamicro.com> | 2022-10-02 06:48:42 +0200 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2022-10-02 06:48:42 +0200 |
| commit | bad6ea07c876a67c4d8f46b0c565ab500150720f (patch) | |
| tree | aac7956d7c598c90f86f07a9ca826ddbcc7a51ab /arch/riscv | |
| parent | RISC-V: KVM: Use Svinval for local TLB maintenance when available (diff) | |
| download | linux-bad6ea07c876a67c4d8f46b0c565ab500150720f.tar.xz linux-bad6ea07c876a67c4d8f46b0c565ab500150720f.zip | |
RISC-V: KVM: Allow Guest use Svinval extension
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>
Diffstat (limited to 'arch/riscv')
| -rw-r--r-- | arch/riscv/include/uapi/asm/kvm.h | 1 | ||||
| -rw-r--r-- | arch/riscv/kvm/vcpu.c | 2 |
2 files changed, 3 insertions, 0 deletions
diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h index 7351417afd62..b6770ee08872 100644 --- a/arch/riscv/include/uapi/asm/kvm.h +++ b/arch/riscv/include/uapi/asm/kvm.h @@ -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, }; diff --git a/arch/riscv/kvm/vcpu.c b/arch/riscv/kvm/vcpu.c index d0f08d5b4282..901bb5c0cb50 100644 --- a/arch/riscv/kvm/vcpu.c +++ b/arch/riscv/kvm/vcpu.c @@ -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; |