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authorHuacai Chen <chenhc@lemote.com>2020-05-23 15:56:35 +0800
committerPaolo Bonzini <pbonzini@redhat.com>2020-06-04 13:49:08 -0400
commit49bb96003fb19b77a0116d9330bdfd61aa41244b (patch)
treeaea9a36dc7775654b32769411c58b9dc1dc28e49 /arch/mips
parent52c07e1cbb6e16a0fe70646b4bc63f714caa0f3b (diff)
downloadlinux-49bb96003fb19b77a0116d9330bdfd61aa41244b.tar.bz2
KVM: MIPS: Let indexed cacheops cause guest exit on Loongson-3
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. Reviewed-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com> Signed-off-by: Huacai Chen <chenhc@lemote.com> Co-developed-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Message-Id: <1590220602-3547-9-git-send-email-chenhc@lemote.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/kvm/vz.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/mips/kvm/vz.c b/arch/mips/kvm/vz.c
index 6e62154ed09b..20f69855f164 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);