diff options
| author | Quan Zhou <zhouquan@iscas.ac.cn> | 2024-12-24 13:04:53 -0800 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2024-12-30 14:01:02 +0530 |
| commit | 51c58956732bb20c5782dea1b2966270827e3aa2 (patch) | |
| tree | d32e4898264f3e48579b50fd58cb6c34d4560d6b /arch/riscv/kvm | |
| parent | 144dfe4017bfe13cc2d459c2c4a7a4dc832c100c (diff) | |
RISC-V: KVM: Redirect instruction access fault trap to guest
The M-mode redirects an unhandled instruction access
fault trap back to S-mode when not delegating it to
VS-mode(hedeleg). However, KVM running in HS-mode
terminates the VS-mode software when back from M-mode.
The KVM should redirect the trap back to VS-mode, and
let VS-mode trap handler decide the next step.
Signed-off-by: Quan Zhou <zhouquan@iscas.ac.cn>
Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Atish Patra <atishp@rivosinc.com>
Link: https://lore.kernel.org/r/20241224-kvm_guest_stat-v2-1-08a77ac36b02@rivosinc.com
Signed-off-by: Anup Patel <anup@brainfault.org>
Diffstat (limited to 'arch/riscv/kvm')
| -rw-r--r-- | arch/riscv/kvm/vcpu_exit.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/riscv/kvm/vcpu_exit.c b/arch/riscv/kvm/vcpu_exit.c index fa98e5c024b2..c9f8b2094554 100644 --- a/arch/riscv/kvm/vcpu_exit.c +++ b/arch/riscv/kvm/vcpu_exit.c @@ -187,6 +187,7 @@ int kvm_riscv_vcpu_exit(struct kvm_vcpu *vcpu, struct kvm_run *run, case EXC_STORE_MISALIGNED: case EXC_LOAD_ACCESS: case EXC_STORE_ACCESS: + case EXC_INST_ACCESS: if (vcpu->arch.guest_context.hstatus & HSTATUS_SPV) { kvm_riscv_vcpu_trap_redirect(vcpu, trap); ret = 1; |