Hi, Bibo, On Fri, Feb 7, 2025 at 11:26 AM Bibo Mao <maobibo@xxxxxxxxxxx> wrote: > > PRMD and ERA register is only meaningful on the beginning stage > of exception entry, and it can be overwritten for nested irq or > exception. The code doesn't touch ERA, so ERA in the commit message is a typo? Huacai > > 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 >
