[PATCH] RISC-V: KVM: Delegate illegal instruction fault
Radim Krčmář
rkrcmar at ventanamicro.com
Fri Jun 20 05:04:28 PDT 2025
2025-06-20T17:17:20+08:00, Xu Lu <luxu.kernel at bytedance.com>:
> Delegate illegal instruction fault to VS mode in default to avoid such
> exceptions being trapped to HS and redirected back to VS.
>
> Signed-off-by: Xu Lu <luxu.kernel at bytedance.com>
> ---
> diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h
> @@ -48,6 +48,7 @@
> + BIT(EXC_INST_ILLEGAL) | \
You should also remove the dead code in kvm_riscv_vcpu_exit.
And why not delegate the others as well?
(EXC_LOAD_MISALIGNED, EXC_STORE_MISALIGNED, EXC_LOAD_ACCESS,
EXC_STORE_ACCESS, and EXC_INST_ACCESS.)
Thanks.
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