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Diffstat (limited to 'arch/loongarch/kvm/vcpu.c')
-rw-r--r--arch/loongarch/kvm/vcpu.c33
1 files changed, 26 insertions, 7 deletions
diff --git a/arch/loongarch/kvm/vcpu.c b/arch/loongarch/kvm/vcpu.c
index 36106922b5..3a8779065f 100644
--- a/arch/loongarch/kvm/vcpu.c
+++ b/arch/loongarch/kvm/vcpu.c
@@ -304,11 +304,18 @@ static int _kvm_get_cpucfg_mask(int id, u64 *v)
return -EINVAL;
switch (id) {
- case 2:
+ case LOONGARCH_CPUCFG0:
+ *v = GENMASK(31, 0);
+ return 0;
+ case LOONGARCH_CPUCFG1:
+ /* CPUCFG1_MSGINT is not supported by KVM */
+ *v = GENMASK(25, 0);
+ return 0;
+ case LOONGARCH_CPUCFG2:
/* CPUCFG2 features unconditionally supported by KVM */
*v = CPUCFG2_FP | CPUCFG2_FPSP | CPUCFG2_FPDP |
CPUCFG2_FPVERS | CPUCFG2_LLFTP | CPUCFG2_LLFTPREV |
- CPUCFG2_LAM;
+ CPUCFG2_LSPW | CPUCFG2_LAM;
/*
* For the ISA extensions listed below, if one is supported
* by the host, then it is also supported by KVM.
@@ -319,13 +326,25 @@ static int _kvm_get_cpucfg_mask(int id, u64 *v)
*v |= CPUCFG2_LASX;
return 0;
+ case LOONGARCH_CPUCFG3:
+ *v = GENMASK(16, 0);
+ return 0;
+ case LOONGARCH_CPUCFG4:
+ case LOONGARCH_CPUCFG5:
+ *v = GENMASK(31, 0);
+ return 0;
+ case LOONGARCH_CPUCFG16:
+ *v = GENMASK(16, 0);
+ return 0;
+ case LOONGARCH_CPUCFG17 ... LOONGARCH_CPUCFG20:
+ *v = GENMASK(30, 0);
+ return 0;
default:
/*
- * No restrictions on other valid CPUCFG IDs' values, but
- * CPUCFG data is limited to 32 bits as the LoongArch ISA
- * manual says (Volume 1, Section 2.2.10.5 "CPUCFG").
+ * CPUCFG bits should be zero if reserved by HW or not
+ * supported by KVM.
*/
- *v = U32_MAX;
+ *v = 0;
return 0;
}
}
@@ -344,7 +363,7 @@ static int kvm_check_cpucfg(int id, u64 val)
return -EINVAL;
switch (id) {
- case 2:
+ case LOONGARCH_CPUCFG2:
if (!(val & CPUCFG2_LLFTP))
/* Guests must have a constant timer */
return -EINVAL;