KVM: riscv: selftests: Fix ISA_EXT register handling in get-reg-list

Same set of ISA_EXT registers are not present on all host because
ISA_EXT registers are visible to the KVM user space based on the
ISA extensions available on the host. Also, disabling an ISA
extension using corresponding ISA_EXT register does not affect
the visibility of the ISA_EXT register itself.

Based on the above, we should filter-out all ISA_EXT registers.

Fixes: 477069398ed6 ("KVM: riscv: selftests: Add get-reg-list test")
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Anup Patel <anup@brainfault.org>

diff --git a/tools/testing/selftests/kvm/riscv/get-reg-list.c b/tools/testing/selftests/kvm/riscv/get-reg-list.c
index d8ecacd..76c0ad1 100644 (file)
--- a/tools/testing/selftests/kvm/riscv/get-reg-list.c
+++ b/tools/testing/selftests/kvm/riscv/get-reg-list.c
@@ -14,17 +14,33 @@
 
 bool filter_reg(__u64 reg)
 {
+       switch (reg & ~REG_MASK) {
        /*
-        * Some ISA extensions are optional and not present on all host,
-        * but they can't be disabled through ISA_EXT registers when present.
-        * So, to make life easy, just filtering out these kind of registers.
+        * Same set of ISA_EXT registers are not present on all host because
+        * ISA_EXT registers are visible to the KVM user space based on the
+        * ISA extensions available on the host. Also, disabling an ISA
+        * extension using corresponding ISA_EXT register does not affect
+        * the visibility of the ISA_EXT register itself.
+        *
+        * Based on above, we should filter-out all ISA_EXT registers.
         */
-       switch (reg & ~REG_MASK) {
+       case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_A:
+       case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_C:
+       case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_D:
+       case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_F:
+       case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_H:
+       case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_I:
+       case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_M:
+       case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_SVPBMT:
        case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_SSTC:
        case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_SVINVAL:
        case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_ZIHINTPAUSE:
+       case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_ZICBOM:
+       case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_ZICBOZ:
        case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_ZBB:
        case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_SSAIA:
+       case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_V:
+       case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_SVNAPOT:
        case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_ZBA:
        case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_ZBS:
        case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_ZICNTR:
@@ -50,12 +66,7 @@ static inline bool vcpu_has_ext(struct kvm_vcpu *vcpu, int ext)
        unsigned long value;
 
        ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(ext), &value);
-       if (ret) {
-               printf("Failed to get ext %d", ext);
-               return false;
-       }
-
-       return !!value;
+       return (ret) ? false : !!value;
 }
 
 void finalize_vcpu(struct kvm_vcpu *vcpu, struct vcpu_reg_list *c)
@@ -506,10 +517,6 @@ static __u64 base_regs[] = {
        KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_TIMER | KVM_REG_RISCV_TIMER_REG(time),
        KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_TIMER | KVM_REG_RISCV_TIMER_REG(compare),
        KVM_REG_RISCV | KVM_REG_SIZE_U64 | KVM_REG_RISCV_TIMER | KVM_REG_RISCV_TIMER_REG(state),
-       KVM_REG_RISCV | KVM_REG_SIZE_ULONG | KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_A,
-       KVM_REG_RISCV | KVM_REG_SIZE_ULONG | KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_C,
-       KVM_REG_RISCV | KVM_REG_SIZE_ULONG | KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_I,
-       KVM_REG_RISCV | KVM_REG_SIZE_ULONG | KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_M,
        KVM_REG_RISCV | KVM_REG_SIZE_ULONG | KVM_REG_RISCV_SBI_EXT | KVM_REG_RISCV_SBI_SINGLE | KVM_RISCV_SBI_EXT_V01,
        KVM_REG_RISCV | KVM_REG_SIZE_ULONG | KVM_REG_RISCV_SBI_EXT | KVM_REG_RISCV_SBI_SINGLE | KVM_RISCV_SBI_EXT_TIME,
        KVM_REG_RISCV | KVM_REG_SIZE_ULONG | KVM_REG_RISCV_SBI_EXT | KVM_REG_RISCV_SBI_SINGLE | KVM_RISCV_SBI_EXT_IPI,