From 0bba48978f6b63aee0fa4ee3a8097ec94e75f7f2 Mon Sep 17 00:00:00 2001 From: Mayuresh Chitale Date: Sun, 2 Oct 2022 10:18:48 +0530 Subject: RISC-V: KVM: Allow Guest use Zihintpause extension We should advertise Zihintpause 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: Mayuresh Chitale Reviewed-by: Andrew Jones Signed-off-by: Anup Patel --- arch/riscv/kvm/vcpu.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/riscv/kvm') diff --git a/arch/riscv/kvm/vcpu.c b/arch/riscv/kvm/vcpu.c index 901bb5c0cb50..0de0dd22e734 100644 --- a/arch/riscv/kvm/vcpu.c +++ b/arch/riscv/kvm/vcpu.c @@ -54,6 +54,7 @@ static const unsigned long kvm_isa_ext_arr[] = { RISCV_ISA_EXT_SVPBMT, RISCV_ISA_EXT_SSTC, RISCV_ISA_EXT_SVINVAL, + RISCV_ISA_EXT_ZIHINTPAUSE, }; static unsigned long kvm_riscv_vcpu_base2isa_ext(unsigned long base_ext) @@ -89,6 +90,7 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext) case KVM_RISCV_ISA_EXT_M: case KVM_RISCV_ISA_EXT_SSTC: case KVM_RISCV_ISA_EXT_SVINVAL: + case KVM_RISCV_ISA_EXT_ZIHINTPAUSE: return false; default: break; -- cgit v1.2.3