PRMD and ERA register is only meaningful on the beginning stage of exception entry, and it can be overwritten for nested irq or exception. When CPU runs in VM mode, interrupt need be enabled on host. And the mode for host had better be kernel mode rather than random. Signed-off-by: Bibo Mao <maobibo@xxxxxxxxxxx> --- arch/loongarch/kvm/switch.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/loongarch/kvm/switch.S b/arch/loongarch/kvm/switch.S index 0c292f818492..1be185e94807 100644 --- a/arch/loongarch/kvm/switch.S +++ b/arch/loongarch/kvm/switch.S @@ -85,7 +85,7 @@ * Guest CRMD comes from separate GCSR_CRMD register */ ori t0, zero, CSR_PRMD_PIE - csrxchg t0, t0, LOONGARCH_CSR_PRMD + csrwr t0, LOONGARCH_CSR_PRMD /* Set PVM bit to setup ertn to guest context */ ori t0, zero, CSR_GSTAT_PVM -- 2.39.3
