Loongson-3's indexed cache operations need a node-id in the address,
but in KVM guest the node-id may be incorrect. So, let indexed cache
operations cause guest exit on Loongson-3.
Signed-off-by: Huacai Chen <chenhc@xxxxxxxxxx>
Co-developed-by: Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx>
---
arch/mips/kvm/vz.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/arch/mips/kvm/vz.c b/arch/mips/kvm/vz.c
index e30ebb2..9a228dc 100644
--- a/arch/mips/kvm/vz.c
+++ b/arch/mips/kvm/vz.c
@@ -2853,8 +2853,12 @@ static int kvm_vz_hardware_enable(void)
write_c0_guestctl0(MIPS_GCTL0_CP0 |
(MIPS_GCTL0_AT_GUEST << MIPS_GCTL0_AT_SHIFT) |
MIPS_GCTL0_CG | MIPS_GCTL0_CF);
- if (cpu_has_guestctl0ext)
- set_c0_guestctl0ext(MIPS_GCTL0EXT_CGI);
+ if (cpu_has_guestctl0ext) {
+ if (current_cpu_type() != CPU_LOONGSON64)
+ set_c0_guestctl0ext(MIPS_GCTL0EXT_CGI);
+ else
+ clear_c0_guestctl0ext(MIPS_GCTL0EXT_CGI);
+ }
if (cpu_has_guestid) {
write_c0_guestctl1(0);
--
2.7.0
