[v5,11/12] KVM: riscv: selftests: Change vcpu_has_ext to a common function

Commit Message

Xu, Haibo1 Jan. 22, 2024, 9:58 a.m. UTC

Move vcpu_has_ext to the processor.c and rename it to __vcpu_has_ext
so that other test cases can use it for vCPU extension check.

Signed-off-by: Haibo Xu <[e-mail]>
Reviewed-by: Andrew Jones <[e-mail]>
---
 tools/testing/selftests/kvm/include/riscv/processor.h |  2 ++
 tools/testing/selftests/kvm/lib/riscv/processor.c     | 10 ++++++++++
 tools/testing/selftests/kvm/riscv/get-reg-list.c      | 11 +----------
 3 files changed, 13 insertions(+), 10 deletions(-)

Comments

Atish Patra Feb. 20, 2024, 11:03 p.m. UTC | #1

On Mon, Jan 22, 2024 at 1:48 AM Haibo Xu <[e-mail]> wrote:
>
> Move vcpu_has_ext to the processor.c and rename it to __vcpu_has_ext
> so that other test cases can use it for vCPU extension check.
>
> Signed-off-by: Haibo Xu <[e-mail]>
> Reviewed-by: Andrew Jones <[e-mail]>
> ---
>  tools/testing/selftests/kvm/include/riscv/processor.h |  2 ++
>  tools/testing/selftests/kvm/lib/riscv/processor.c     | 10 ++++++++++
>  tools/testing/selftests/kvm/riscv/get-reg-list.c      | 11 +----------
>  3 files changed, 13 insertions(+), 10 deletions(-)
>
> diff --git a/tools/testing/selftests/kvm/include/riscv/processor.h b/tools/testing/selftests/kvm/include/riscv/processor.h
> index b68b1b731a34..bd27e1c67579 100644
> --- a/tools/testing/selftests/kvm/include/riscv/processor.h
> +++ b/tools/testing/selftests/kvm/include/riscv/processor.h
> @@ -42,6 +42,8 @@ static inline uint64_t __kvm_reg_id(uint64_t type, uint64_t idx,
>  #define RISCV_ISA_EXT_REG(idx) __kvm_reg_id(KVM_REG_RISCV_ISA_EXT, \
>                                              idx, KVM_REG_SIZE_ULONG)
>
> +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext);
> +
>  struct ex_regs {
>         unsigned long ra;
>         unsigned long sp;
> diff --git a/tools/testing/selftests/kvm/lib/riscv/processor.c b/tools/testing/selftests/kvm/lib/riscv/processor.c
> index 39a1e9902dec..dad73ce18164 100644
> --- a/tools/testing/selftests/kvm/lib/riscv/processor.c
> +++ b/tools/testing/selftests/kvm/lib/riscv/processor.c
> @@ -15,6 +15,16 @@
>
>  static vm_vaddr_t exception_handlers;
>
> +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext)
> +{
> +       unsigned long value = 0;
> +       int ret;
> +
> +       ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(ext), &value);
> +
> +       return !ret && !!value;
> +}
> +

Not sure what was the base patch on which this was rebased. The actual
commit in the queue branch looks different.

https://github.com/kvm-riscv/linux/commit/5563517cc2012e3326411b360c9924d3f2706c8d

Both seem to have the same bug though the tests fail now and require
the following fix.
The ext id should be uint64_t and we need to pass ext directly so that
SBI extension tests can also pass.


--- a/tools/testing/selftests/kvm/include/riscv/processor.h
+++ b/tools/testing/selftests/kvm/include/riscv/processor.h
@@ -48,7 +48,7 @@ static inline uint64_t __kvm_reg_id(uint64_t type,
uint64_t subtype,
KVM_REG_RISCV_SBI_SINGLE, \
idx, KVM_REG_SIZE_ULONG)

-bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext);
+bool __vcpu_has_ext(struct kvm_vcpu *vcpu, uint64_t ext);

struct ex_regs {
unsigned long ra;
diff --git a/tools/testing/selftests/kvm/lib/riscv/processor.c
b/tools/testing/selftests/kvm/lib/riscv/processor.c
index 282587cd4bbc..ec66d331a127 100644
--- a/tools/testing/selftests/kvm/lib/riscv/processor.c
+++ b/tools/testing/selftests/kvm/lib/riscv/processor.c
@@ -15,12 +15,12 @@

static vm_vaddr_t exception_handlers;

-bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext)
+bool __vcpu_has_ext(struct kvm_vcpu *vcpu, uint64_t ext)
{
unsigned long value = 0;
int ret;

- ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(ext), &value);
+ ret = __vcpu_get_reg(vcpu, ext, &value);

return !ret && !!value;
}

With the above the fix, Both SBI/ISA extension tests pass.
# ./get-reg-list
sbi-base: PASS
sbi-sta: PASS
sbi-pmu: PASS
sbi-dbcn: PASS
aia: PASS
fp_f: PASS
fp_d: PASS
1..0 # SKIP - h not available, skipping tests
smstateen: PASS
sscofpmf: PASS
sstc: PASS
1..0 # SKIP - svinval not available, skipping tests
1..0 # SKIP - svnapot not available, skipping tests
1..0 # SKIP - svpbmt not available, skipping tests
zba: PASS
zbb: PASS
zbc: PASS
1..0 # SKIP - zbkb not available, skipping tests
1..0 # SKIP - zbkc not available, skipping tests
1..0 # SKIP - zbkx not available, skipping tests
zbs: PASS
zfa: PASS
1..0 # SKIP - zfh not available, skipping tests
1..0 # SKIP - zfhmin not available, skipping tests
zicbom: PASS
zicboz: PASS
zicntr: PASS
1..0 # SKIP - zicond not available, skipping tests
zicsr: PASS
zifencei: PASS
zihintntl: PASS
zihintpause: PASS
zihpm: PASS


>  static uint64_t page_align(struct kvm_vm *vm, uint64_t v)
>  {
>         return (v + vm->page_size) & ~(vm->page_size - 1);
> diff --git a/tools/testing/selftests/kvm/riscv/get-reg-list.c b/tools/testing/selftests/kvm/riscv/get-reg-list.c
> index 25de4b8bc347..ed29ba45588c 100644
> --- a/tools/testing/selftests/kvm/riscv/get-reg-list.c
> +++ b/tools/testing/selftests/kvm/riscv/get-reg-list.c
> @@ -75,15 +75,6 @@ bool check_reject_set(int err)
>         return err == EINVAL;
>  }
>
> -static inline bool vcpu_has_ext(struct kvm_vcpu *vcpu, int ext)
> -{
> -       int ret;
> -       unsigned long value;
> -
> -       ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(ext), &value);
> -       return (ret) ? false : !!value;
> -}
> -
>  void finalize_vcpu(struct kvm_vcpu *vcpu, struct vcpu_reg_list *c)
>  {
>         unsigned long isa_ext_state[KVM_RISCV_ISA_EXT_MAX] = { 0 };
> @@ -111,7 +102,7 @@ void finalize_vcpu(struct kvm_vcpu *vcpu, struct vcpu_reg_list *c)
>                 __vcpu_set_reg(vcpu, RISCV_ISA_EXT_REG(s->feature), 1);
>
>                 /* Double check whether the desired extension was enabled */
> -               __TEST_REQUIRE(vcpu_has_ext(vcpu, s->feature),
> +               __TEST_REQUIRE(__vcpu_has_ext(vcpu, s->feature),
>                                "%s not available, skipping tests\n", s->name);
>         }
>  }
> --
> 2.34.1
>

Haibo Xu Feb. 21, 2024, 2:13 a.m. UTC | #2

On Wed, Feb 21, 2024 at 7:03 AM Atish Patra <[e-mail]> wrote:
>
> On Mon, Jan 22, 2024 at 1:48 AM Haibo Xu <[e-mail]> wrote:
> >
> > Move vcpu_has_ext to the processor.c and rename it to __vcpu_has_ext
> > so that other test cases can use it for vCPU extension check.
> >
> > Signed-off-by: Haibo Xu <[e-mail]>
> > Reviewed-by: Andrew Jones <[e-mail]>
> > ---
> >  tools/testing/selftests/kvm/include/riscv/processor.h |  2 ++
> >  tools/testing/selftests/kvm/lib/riscv/processor.c     | 10 ++++++++++
> >  tools/testing/selftests/kvm/riscv/get-reg-list.c      | 11 +----------
> >  3 files changed, 13 insertions(+), 10 deletions(-)
> >
> > diff --git a/tools/testing/selftests/kvm/include/riscv/processor.h b/tools/testing/selftests/kvm/include/riscv/processor.h
> > index b68b1b731a34..bd27e1c67579 100644
> > --- a/tools/testing/selftests/kvm/include/riscv/processor.h
> > +++ b/tools/testing/selftests/kvm/include/riscv/processor.h
> > @@ -42,6 +42,8 @@ static inline uint64_t __kvm_reg_id(uint64_t type, uint64_t idx,
> >  #define RISCV_ISA_EXT_REG(idx) __kvm_reg_id(KVM_REG_RISCV_ISA_EXT, \
> >                                              idx, KVM_REG_SIZE_ULONG)
> >
> > +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext);
> > +
> >  struct ex_regs {
> >         unsigned long ra;
> >         unsigned long sp;
> > diff --git a/tools/testing/selftests/kvm/lib/riscv/processor.c b/tools/testing/selftests/kvm/lib/riscv/processor.c
> > index 39a1e9902dec..dad73ce18164 100644
> > --- a/tools/testing/selftests/kvm/lib/riscv/processor.c
> > +++ b/tools/testing/selftests/kvm/lib/riscv/processor.c
> > @@ -15,6 +15,16 @@
> >
> >  static vm_vaddr_t exception_handlers;
> >
> > +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext)
> > +{
> > +       unsigned long value = 0;
> > +       int ret;
> > +
> > +       ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(ext), &value);
> > +
> > +       return !ret && !!value;
> > +}
> > +
>
> Not sure what was the base patch on which this was rebased. The actual
> commit in the queue branch looks different.
>

This patch set was based on 6.7-rc8.

> https://github.com/kvm-riscv/linux/commit/5563517cc2012e3326411b360c9924d3f2706c8d
>
> Both seem to have the same bug though the tests fail now and require
> the following fix.
> The ext id should be uint64_t and we need to pass ext directly so that
> SBI extension tests can also pass.
>

It's weird that 6.7-rc8 has already included Andrew's change on the ISA ext reg,
but this patch was not generated against his change.

commit bdf6aa328f137e184b0fce607fd585354c3742f1
Author: Andrew Jones <[e-mail]>
Date:   Wed Dec 13 18:09:58 2023 +0100

    RISC-V: KVM: selftests: Treat SBI ext regs like ISA ext regs

Anyway, your changes were right. Please go ahead to include them when merging.

Thanks,
Haibo

>
> --- a/tools/testing/selftests/kvm/include/riscv/processor.h
> +++ b/tools/testing/selftests/kvm/include/riscv/processor.h
> @@ -48,7 +48,7 @@ static inline uint64_t __kvm_reg_id(uint64_t type,
> uint64_t subtype,
> KVM_REG_RISCV_SBI_SINGLE, \
> idx, KVM_REG_SIZE_ULONG)
>
> -bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext);
> +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, uint64_t ext);
>
> struct ex_regs {
> unsigned long ra;
> diff --git a/tools/testing/selftests/kvm/lib/riscv/processor.c
> b/tools/testing/selftests/kvm/lib/riscv/processor.c
> index 282587cd4bbc..ec66d331a127 100644
> --- a/tools/testing/selftests/kvm/lib/riscv/processor.c
> +++ b/tools/testing/selftests/kvm/lib/riscv/processor.c
> @@ -15,12 +15,12 @@
>
> static vm_vaddr_t exception_handlers;
>
> -bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext)
> +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, uint64_t ext)
> {
> unsigned long value = 0;
> int ret;
>
> - ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(ext), &value);
> + ret = __vcpu_get_reg(vcpu, ext, &value);
>
> return !ret && !!value;
> }
>
> With the above the fix, Both SBI/ISA extension tests pass.
> # ./get-reg-list
> sbi-base: PASS
> sbi-sta: PASS
> sbi-pmu: PASS
> sbi-dbcn: PASS
> aia: PASS
> fp_f: PASS
> fp_d: PASS
> 1..0 # SKIP - h not available, skipping tests
> smstateen: PASS
> sscofpmf: PASS
> sstc: PASS
> 1..0 # SKIP - svinval not available, skipping tests
> 1..0 # SKIP - svnapot not available, skipping tests
> 1..0 # SKIP - svpbmt not available, skipping tests
> zba: PASS
> zbb: PASS
> zbc: PASS
> 1..0 # SKIP - zbkb not available, skipping tests
> 1..0 # SKIP - zbkc not available, skipping tests
> 1..0 # SKIP - zbkx not available, skipping tests
> zbs: PASS
> zfa: PASS
> 1..0 # SKIP - zfh not available, skipping tests
> 1..0 # SKIP - zfhmin not available, skipping tests
> zicbom: PASS
> zicboz: PASS
> zicntr: PASS
> 1..0 # SKIP - zicond not available, skipping tests
> zicsr: PASS
> zifencei: PASS
> zihintntl: PASS
> zihintpause: PASS
> zihpm: PASS
>
>
> >  static uint64_t page_align(struct kvm_vm *vm, uint64_t v)
> >  {
> >         return (v + vm->page_size) & ~(vm->page_size - 1);
> > diff --git a/tools/testing/selftests/kvm/riscv/get-reg-list.c b/tools/testing/selftests/kvm/riscv/get-reg-list.c
> > index 25de4b8bc347..ed29ba45588c 100644
> > --- a/tools/testing/selftests/kvm/riscv/get-reg-list.c
> > +++ b/tools/testing/selftests/kvm/riscv/get-reg-list.c
> > @@ -75,15 +75,6 @@ bool check_reject_set(int err)
> >         return err == EINVAL;
> >  }
> >
> > -static inline bool vcpu_has_ext(struct kvm_vcpu *vcpu, int ext)
> > -{
> > -       int ret;
> > -       unsigned long value;
> > -
> > -       ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(ext), &value);
> > -       return (ret) ? false : !!value;
> > -}
> > -
> >  void finalize_vcpu(struct kvm_vcpu *vcpu, struct vcpu_reg_list *c)
> >  {
> >         unsigned long isa_ext_state[KVM_RISCV_ISA_EXT_MAX] = { 0 };
> > @@ -111,7 +102,7 @@ void finalize_vcpu(struct kvm_vcpu *vcpu, struct vcpu_reg_list *c)
> >                 __vcpu_set_reg(vcpu, RISCV_ISA_EXT_REG(s->feature), 1);
> >
> >                 /* Double check whether the desired extension was enabled */
> > -               __TEST_REQUIRE(vcpu_has_ext(vcpu, s->feature),
> > +               __TEST_REQUIRE(__vcpu_has_ext(vcpu, s->feature),
> >                                "%s not available, skipping tests\n", s->name);
> >         }
> >  }
> > --
> > 2.34.1
> >
>
>
> --
> Regards,
> Atish

Atish Kumar Patra Feb. 21, 2024, 8:37 a.m. UTC | #3

On 2/20/24 18:13, Haibo Xu wrote:
> On Wed, Feb 21, 2024 at 7:03 AM Atish Patra <[e-mail]> wrote:
>>
>> On Mon, Jan 22, 2024 at 1:48 AM Haibo Xu <[e-mail]> wrote:
>>>
>>> Move vcpu_has_ext to the processor.c and rename it to __vcpu_has_ext
>>> so that other test cases can use it for vCPU extension check.
>>>
>>> Signed-off-by: Haibo Xu <[e-mail]>
>>> Reviewed-by: Andrew Jones <[e-mail]>
>>> ---
>>>   tools/testing/selftests/kvm/include/riscv/processor.h |  2 ++
>>>   tools/testing/selftests/kvm/lib/riscv/processor.c     | 10 ++++++++++
>>>   tools/testing/selftests/kvm/riscv/get-reg-list.c      | 11 +----------
>>>   3 files changed, 13 insertions(+), 10 deletions(-)
>>>
>>> diff --git a/tools/testing/selftests/kvm/include/riscv/processor.h b/tools/testing/selftests/kvm/include/riscv/processor.h
>>> index b68b1b731a34..bd27e1c67579 100644
>>> --- a/tools/testing/selftests/kvm/include/riscv/processor.h
>>> +++ b/tools/testing/selftests/kvm/include/riscv/processor.h
>>> @@ -42,6 +42,8 @@ static inline uint64_t __kvm_reg_id(uint64_t type, uint64_t idx,
>>>   #define RISCV_ISA_EXT_REG(idx) __kvm_reg_id(KVM_REG_RISCV_ISA_EXT, \
>>>                                               idx, KVM_REG_SIZE_ULONG)
>>>
>>> +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext);
>>> +
>>>   struct ex_regs {
>>>          unsigned long ra;
>>>          unsigned long sp;
>>> diff --git a/tools/testing/selftests/kvm/lib/riscv/processor.c b/tools/testing/selftests/kvm/lib/riscv/processor.c
>>> index 39a1e9902dec..dad73ce18164 100644
>>> --- a/tools/testing/selftests/kvm/lib/riscv/processor.c
>>> +++ b/tools/testing/selftests/kvm/lib/riscv/processor.c
>>> @@ -15,6 +15,16 @@
>>>
>>>   static vm_vaddr_t exception_handlers;
>>>
>>> +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext)
>>> +{
>>> +       unsigned long value = 0;
>>> +       int ret;
>>> +
>>> +       ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(ext), &value);
>>> +
>>> +       return !ret && !!value;
>>> +}
>>> +
>>
>> Not sure what was the base patch on which this was rebased. The actual
>> commit in the queue branch looks different.
>>
> 
> This patch set was based on 6.7-rc8.
> 
>> https://github.com/kvm-riscv/linux/commit/5563517cc2012e3326411b360c9924d3f2706c8d
>>
>> Both seem to have the same bug though the tests fail now and require
>> the following fix.
>> The ext id should be uint64_t and we need to pass ext directly so that
>> SBI extension tests can also pass.
>>
> 
> It's weird that 6.7-rc8 has already included Andrew's change on the ISA ext reg,
> but this patch was not generated against his change.
> 
> commit bdf6aa328f137e184b0fce607fd585354c3742f1
> Author: Andrew Jones <[e-mail]>
> Date:   Wed Dec 13 18:09:58 2023 +0100
> 
>      RISC-V: KVM: selftests: Treat SBI ext regs like ISA ext regs
> 
> Anyway, your changes were right. Please go ahead to include them when merging.
> 

I am not sure what happened. Probably, a merge conflict issue.

I just realized I forgot to copy paste another fix in arch timer

+++ b/tools/testing/selftests/kvm/riscv/arch_timer.c
@@ -85,7 +85,7 @@ struct kvm_vm *test_vm_create(void)
         int nr_vcpus = test_args.nr_vcpus;

         vm = vm_create_with_vcpus(nr_vcpus, guest_code, vcpus);
-       __TEST_REQUIRE(__vcpu_has_ext(vcpus[0], KVM_RISCV_ISA_EXT_SSTC),
+       __TEST_REQUIRE(__vcpu_has_ext(vcpus[0], 
RISCV_ISA_EXT_REG(KVM_RISCV_ISA_EXT_SSTC)),


> Thanks,
> Haibo
> 
>>
>> --- a/tools/testing/selftests/kvm/include/riscv/processor.h
>> +++ b/tools/testing/selftests/kvm/include/riscv/processor.h
>> @@ -48,7 +48,7 @@ static inline uint64_t __kvm_reg_id(uint64_t type,
>> uint64_t subtype,
>> KVM_REG_RISCV_SBI_SINGLE, \
>> idx, KVM_REG_SIZE_ULONG)
>>
>> -bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext);
>> +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, uint64_t ext);
>>
>> struct ex_regs {
>> unsigned long ra;
>> diff --git a/tools/testing/selftests/kvm/lib/riscv/processor.c
>> b/tools/testing/selftests/kvm/lib/riscv/processor.c
>> index 282587cd4bbc..ec66d331a127 100644
>> --- a/tools/testing/selftests/kvm/lib/riscv/processor.c
>> +++ b/tools/testing/selftests/kvm/lib/riscv/processor.c
>> @@ -15,12 +15,12 @@
>>
>> static vm_vaddr_t exception_handlers;
>>
>> -bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext)
>> +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, uint64_t ext)
>> {
>> unsigned long value = 0;
>> int ret;
>>
>> - ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(ext), &value);
>> + ret = __vcpu_get_reg(vcpu, ext, &value);
>>
>> return !ret && !!value;
>> }
>>
>> With the above the fix, Both SBI/ISA extension tests pass.
>> # ./get-reg-list
>> sbi-base: PASS
>> sbi-sta: PASS
>> sbi-pmu: PASS
>> sbi-dbcn: PASS
>> aia: PASS
>> fp_f: PASS
>> fp_d: PASS
>> 1..0 # SKIP - h not available, skipping tests
>> smstateen: PASS
>> sscofpmf: PASS
>> sstc: PASS
>> 1..0 # SKIP - svinval not available, skipping tests
>> 1..0 # SKIP - svnapot not available, skipping tests
>> 1..0 # SKIP - svpbmt not available, skipping tests
>> zba: PASS
>> zbb: PASS
>> zbc: PASS
>> 1..0 # SKIP - zbkb not available, skipping tests
>> 1..0 # SKIP - zbkc not available, skipping tests
>> 1..0 # SKIP - zbkx not available, skipping tests
>> zbs: PASS
>> zfa: PASS
>> 1..0 # SKIP - zfh not available, skipping tests
>> 1..0 # SKIP - zfhmin not available, skipping tests
>> zicbom: PASS
>> zicboz: PASS
>> zicntr: PASS
>> 1..0 # SKIP - zicond not available, skipping tests
>> zicsr: PASS
>> zifencei: PASS
>> zihintntl: PASS
>> zihintpause: PASS
>> zihpm: PASS
>>
>>
>>>   static uint64_t page_align(struct kvm_vm *vm, uint64_t v)
>>>   {
>>>          return (v + vm->page_size) & ~(vm->page_size - 1);
>>> diff --git a/tools/testing/selftests/kvm/riscv/get-reg-list.c b/tools/testing/selftests/kvm/riscv/get-reg-list.c
>>> index 25de4b8bc347..ed29ba45588c 100644
>>> --- a/tools/testing/selftests/kvm/riscv/get-reg-list.c
>>> +++ b/tools/testing/selftests/kvm/riscv/get-reg-list.c
>>> @@ -75,15 +75,6 @@ bool check_reject_set(int err)
>>>          return err == EINVAL;
>>>   }
>>>
>>> -static inline bool vcpu_has_ext(struct kvm_vcpu *vcpu, int ext)
>>> -{
>>> -       int ret;
>>> -       unsigned long value;
>>> -
>>> -       ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(ext), &value);
>>> -       return (ret) ? false : !!value;
>>> -}
>>> -
>>>   void finalize_vcpu(struct kvm_vcpu *vcpu, struct vcpu_reg_list *c)
>>>   {
>>>          unsigned long isa_ext_state[KVM_RISCV_ISA_EXT_MAX] = { 0 };
>>> @@ -111,7 +102,7 @@ void finalize_vcpu(struct kvm_vcpu *vcpu, struct vcpu_reg_list *c)
>>>                  __vcpu_set_reg(vcpu, RISCV_ISA_EXT_REG(s->feature), 1);
>>>
>>>                  /* Double check whether the desired extension was enabled */
>>> -               __TEST_REQUIRE(vcpu_has_ext(vcpu, s->feature),
>>> +               __TEST_REQUIRE(__vcpu_has_ext(vcpu, s->feature),
>>>                                 "%s not available, skipping tests\n", s->name);
>>>          }
>>>   }
>>> --
>>> 2.34.1
>>>
>>
>>
>> --
>> Regards,
>> Atish

Haibo Xu Feb. 21, 2024, 1:08 p.m. UTC | #4

On Wed, Feb 21, 2024 at 4:37 PM Atish Patra <[e-mail]> wrote:
>
> On 2/20/24 18:13, Haibo Xu wrote:
> > On Wed, Feb 21, 2024 at 7:03 AM Atish Patra <[e-mail]> wrote:
> >>
> >> On Mon, Jan 22, 2024 at 1:48 AM Haibo Xu <[e-mail]> wrote:
> >>>
> >>> Move vcpu_has_ext to the processor.c and rename it to __vcpu_has_ext
> >>> so that other test cases can use it for vCPU extension check.
> >>>
> >>> Signed-off-by: Haibo Xu <[e-mail]>
> >>> Reviewed-by: Andrew Jones <[e-mail]>
> >>> ---
> >>>   tools/testing/selftests/kvm/include/riscv/processor.h |  2 ++
> >>>   tools/testing/selftests/kvm/lib/riscv/processor.c     | 10 ++++++++++
> >>>   tools/testing/selftests/kvm/riscv/get-reg-list.c      | 11 +----------
> >>>   3 files changed, 13 insertions(+), 10 deletions(-)
> >>>
> >>> diff --git a/tools/testing/selftests/kvm/include/riscv/processor.h b/tools/testing/selftests/kvm/include/riscv/processor.h
> >>> index b68b1b731a34..bd27e1c67579 100644
> >>> --- a/tools/testing/selftests/kvm/include/riscv/processor.h
> >>> +++ b/tools/testing/selftests/kvm/include/riscv/processor.h
> >>> @@ -42,6 +42,8 @@ static inline uint64_t __kvm_reg_id(uint64_t type, uint64_t idx,
> >>>   #define RISCV_ISA_EXT_REG(idx) __kvm_reg_id(KVM_REG_RISCV_ISA_EXT, \
> >>>                                               idx, KVM_REG_SIZE_ULONG)
> >>>
> >>> +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext);
> >>> +
> >>>   struct ex_regs {
> >>>          unsigned long ra;
> >>>          unsigned long sp;
> >>> diff --git a/tools/testing/selftests/kvm/lib/riscv/processor.c b/tools/testing/selftests/kvm/lib/riscv/processor.c
> >>> index 39a1e9902dec..dad73ce18164 100644
> >>> --- a/tools/testing/selftests/kvm/lib/riscv/processor.c
> >>> +++ b/tools/testing/selftests/kvm/lib/riscv/processor.c
> >>> @@ -15,6 +15,16 @@
> >>>
> >>>   static vm_vaddr_t exception_handlers;
> >>>
> >>> +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext)
> >>> +{
> >>> +       unsigned long value = 0;
> >>> +       int ret;
> >>> +
> >>> +       ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(ext), &value);
> >>> +
> >>> +       return !ret && !!value;
> >>> +}
> >>> +
> >>
> >> Not sure what was the base patch on which this was rebased. The actual
> >> commit in the queue branch looks different.
> >>
> >
> > This patch set was based on 6.7-rc8.
> >
> >> https://github.com/kvm-riscv/linux/commit/5563517cc2012e3326411b360c9924d3f2706c8d
> >>
> >> Both seem to have the same bug though the tests fail now and require
> >> the following fix.
> >> The ext id should be uint64_t and we need to pass ext directly so that
> >> SBI extension tests can also pass.
> >>
> >
> > It's weird that 6.7-rc8 has already included Andrew's change on the ISA ext reg,
> > but this patch was not generated against his change.
> >
> > commit bdf6aa328f137e184b0fce607fd585354c3742f1
> > Author: Andrew Jones <[e-mail]>
> > Date:   Wed Dec 13 18:09:58 2023 +0100
> >
> >      RISC-V: KVM: selftests: Treat SBI ext regs like ISA ext regs
> >
> > Anyway, your changes were right. Please go ahead to include them when merging.
> >
>
> I am not sure what happened. Probably, a merge conflict issue.
>
> I just realized I forgot to copy paste another fix in arch timer
>
> +++ b/tools/testing/selftests/kvm/riscv/arch_timer.c
> @@ -85,7 +85,7 @@ struct kvm_vm *test_vm_create(void)
>          int nr_vcpus = test_args.nr_vcpus;
>
>          vm = vm_create_with_vcpus(nr_vcpus, guest_code, vcpus);
> -       __TEST_REQUIRE(__vcpu_has_ext(vcpus[0], KVM_RISCV_ISA_EXT_SSTC),
> +       __TEST_REQUIRE(__vcpu_has_ext(vcpus[0],
> RISCV_ISA_EXT_REG(KVM_RISCV_ISA_EXT_SSTC)),
>

Right Fix!
Please let me know if I need to rebase this patch series on your tree
and resent it.

Thanks,
Haibo

Atish Kumar Patra Feb. 21, 2024, 8:29 p.m. UTC | #5

On 2/21/24 05:08, Haibo Xu wrote:
> On Wed, Feb 21, 2024 at 4:37 PM Atish Patra <[e-mail]> wrote:
>>
>> On 2/20/24 18:13, Haibo Xu wrote:
>>> On Wed, Feb 21, 2024 at 7:03 AM Atish Patra <[e-mail]> wrote:
>>>>
>>>> On Mon, Jan 22, 2024 at 1:48 AM Haibo Xu <[e-mail]> wrote:
>>>>>
>>>>> Move vcpu_has_ext to the processor.c and rename it to __vcpu_has_ext
>>>>> so that other test cases can use it for vCPU extension check.
>>>>>
>>>>> Signed-off-by: Haibo Xu <[e-mail]>
>>>>> Reviewed-by: Andrew Jones <[e-mail]>
>>>>> ---
>>>>>    tools/testing/selftests/kvm/include/riscv/processor.h |  2 ++
>>>>>    tools/testing/selftests/kvm/lib/riscv/processor.c     | 10 ++++++++++
>>>>>    tools/testing/selftests/kvm/riscv/get-reg-list.c      | 11 +----------
>>>>>    3 files changed, 13 insertions(+), 10 deletions(-)
>>>>>
>>>>> diff --git a/tools/testing/selftests/kvm/include/riscv/processor.h b/tools/testing/selftests/kvm/include/riscv/processor.h
>>>>> index b68b1b731a34..bd27e1c67579 100644
>>>>> --- a/tools/testing/selftests/kvm/include/riscv/processor.h
>>>>> +++ b/tools/testing/selftests/kvm/include/riscv/processor.h
>>>>> @@ -42,6 +42,8 @@ static inline uint64_t __kvm_reg_id(uint64_t type, uint64_t idx,
>>>>>    #define RISCV_ISA_EXT_REG(idx) __kvm_reg_id(KVM_REG_RISCV_ISA_EXT, \
>>>>>                                                idx, KVM_REG_SIZE_ULONG)
>>>>>
>>>>> +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext);
>>>>> +
>>>>>    struct ex_regs {
>>>>>           unsigned long ra;
>>>>>           unsigned long sp;
>>>>> diff --git a/tools/testing/selftests/kvm/lib/riscv/processor.c b/tools/testing/selftests/kvm/lib/riscv/processor.c
>>>>> index 39a1e9902dec..dad73ce18164 100644
>>>>> --- a/tools/testing/selftests/kvm/lib/riscv/processor.c
>>>>> +++ b/tools/testing/selftests/kvm/lib/riscv/processor.c
>>>>> @@ -15,6 +15,16 @@
>>>>>
>>>>>    static vm_vaddr_t exception_handlers;
>>>>>
>>>>> +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext)
>>>>> +{
>>>>> +       unsigned long value = 0;
>>>>> +       int ret;
>>>>> +
>>>>> +       ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(ext), &value);
>>>>> +
>>>>> +       return !ret && !!value;
>>>>> +}
>>>>> +
>>>>
>>>> Not sure what was the base patch on which this was rebased. The actual
>>>> commit in the queue branch looks different.
>>>>
>>>
>>> This patch set was based on 6.7-rc8.
>>>
>>>> https://github.com/kvm-riscv/linux/commit/5563517cc2012e3326411b360c9924d3f2706c8d
>>>>
>>>> Both seem to have the same bug though the tests fail now and require
>>>> the following fix.
>>>> The ext id should be uint64_t and we need to pass ext directly so that
>>>> SBI extension tests can also pass.
>>>>
>>>
>>> It's weird that 6.7-rc8 has already included Andrew's change on the ISA ext reg,
>>> but this patch was not generated against his change.
>>>
>>> commit bdf6aa328f137e184b0fce607fd585354c3742f1
>>> Author: Andrew Jones <[e-mail]>
>>> Date:   Wed Dec 13 18:09:58 2023 +0100
>>>
>>>       RISC-V: KVM: selftests: Treat SBI ext regs like ISA ext regs
>>>
>>> Anyway, your changes were right. Please go ahead to include them when merging.
>>>
>>
>> I am not sure what happened. Probably, a merge conflict issue.
>>
>> I just realized I forgot to copy paste another fix in arch timer
>>
>> +++ b/tools/testing/selftests/kvm/riscv/arch_timer.c
>> @@ -85,7 +85,7 @@ struct kvm_vm *test_vm_create(void)
>>           int nr_vcpus = test_args.nr_vcpus;
>>
>>           vm = vm_create_with_vcpus(nr_vcpus, guest_code, vcpus);
>> -       __TEST_REQUIRE(__vcpu_has_ext(vcpus[0], KVM_RISCV_ISA_EXT_SSTC),
>> +       __TEST_REQUIRE(__vcpu_has_ext(vcpus[0],
>> RISCV_ISA_EXT_REG(KVM_RISCV_ISA_EXT_SSTC)),
>>
> 
> Right Fix!
> Please let me know if I need to rebase this patch series on your tree
> and resent it.
> 

That's Anup's call.

> Thanks,
> Haibo
> 
> _______________________________________________
> linux-riscv mailing list
> [e-mail]
> http://lists.infradead.org/mailman/listinfo/linux-riscv

Anup Patel Feb. 26, 2024, 5:19 a.m. UTC | #6

On Wed, Feb 21, 2024 at 2:07 PM Atish Patra <[e-mail]> wrote:
>
> On 2/20/24 18:13, Haibo Xu wrote:
> > On Wed, Feb 21, 2024 at 7:03 AM Atish Patra <[e-mail]> wrote:
> >>
> >> On Mon, Jan 22, 2024 at 1:48 AM Haibo Xu <[e-mail]> wrote:
> >>>
> >>> Move vcpu_has_ext to the processor.c and rename it to __vcpu_has_ext
> >>> so that other test cases can use it for vCPU extension check.
> >>>
> >>> Signed-off-by: Haibo Xu <[e-mail]>
> >>> Reviewed-by: Andrew Jones <[e-mail]>
> >>> ---
> >>>   tools/testing/selftests/kvm/include/riscv/processor.h |  2 ++
> >>>   tools/testing/selftests/kvm/lib/riscv/processor.c     | 10 ++++++++++
> >>>   tools/testing/selftests/kvm/riscv/get-reg-list.c      | 11 +----------
> >>>   3 files changed, 13 insertions(+), 10 deletions(-)
> >>>
> >>> diff --git a/tools/testing/selftests/kvm/include/riscv/processor.h b/tools/testing/selftests/kvm/include/riscv/processor.h
> >>> index b68b1b731a34..bd27e1c67579 100644
> >>> --- a/tools/testing/selftests/kvm/include/riscv/processor.h
> >>> +++ b/tools/testing/selftests/kvm/include/riscv/processor.h
> >>> @@ -42,6 +42,8 @@ static inline uint64_t __kvm_reg_id(uint64_t type, uint64_t idx,
> >>>   #define RISCV_ISA_EXT_REG(idx) __kvm_reg_id(KVM_REG_RISCV_ISA_EXT, \
> >>>                                               idx, KVM_REG_SIZE_ULONG)
> >>>
> >>> +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext);
> >>> +
> >>>   struct ex_regs {
> >>>          unsigned long ra;
> >>>          unsigned long sp;
> >>> diff --git a/tools/testing/selftests/kvm/lib/riscv/processor.c b/tools/testing/selftests/kvm/lib/riscv/processor.c
> >>> index 39a1e9902dec..dad73ce18164 100644
> >>> --- a/tools/testing/selftests/kvm/lib/riscv/processor.c
> >>> +++ b/tools/testing/selftests/kvm/lib/riscv/processor.c
> >>> @@ -15,6 +15,16 @@
> >>>
> >>>   static vm_vaddr_t exception_handlers;
> >>>
> >>> +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext)
> >>> +{
> >>> +       unsigned long value = 0;
> >>> +       int ret;
> >>> +
> >>> +       ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(ext), &value);
> >>> +
> >>> +       return !ret && !!value;
> >>> +}
> >>> +
> >>
> >> Not sure what was the base patch on which this was rebased. The actual
> >> commit in the queue branch looks different.
> >>
> >
> > This patch set was based on 6.7-rc8.
> >
> >> https://github.com/kvm-riscv/linux/commit/5563517cc2012e3326411b360c9924d3f2706c8d
> >>
> >> Both seem to have the same bug though the tests fail now and require
> >> the following fix.
> >> The ext id should be uint64_t and we need to pass ext directly so that
> >> SBI extension tests can also pass.
> >>
> >
> > It's weird that 6.7-rc8 has already included Andrew's change on the ISA ext reg,
> > but this patch was not generated against his change.
> >
> > commit bdf6aa328f137e184b0fce607fd585354c3742f1
> > Author: Andrew Jones <[e-mail]>
> > Date:   Wed Dec 13 18:09:58 2023 +0100
> >
> >      RISC-V: KVM: selftests: Treat SBI ext regs like ISA ext regs
> >
> > Anyway, your changes were right. Please go ahead to include them when merging.
> >
>
> I am not sure what happened. Probably, a merge conflict issue.
>
> I just realized I forgot to copy paste another fix in arch timer
>
> +++ b/tools/testing/selftests/kvm/riscv/arch_timer.c
> @@ -85,7 +85,7 @@ struct kvm_vm *test_vm_create(void)
>          int nr_vcpus = test_args.nr_vcpus;
>
>          vm = vm_create_with_vcpus(nr_vcpus, guest_code, vcpus);
> -       __TEST_REQUIRE(__vcpu_has_ext(vcpus[0], KVM_RISCV_ISA_EXT_SSTC),
> +       __TEST_REQUIRE(__vcpu_has_ext(vcpus[0],
> RISCV_ISA_EXT_REG(KVM_RISCV_ISA_EXT_SSTC)),

I have squashed this change into an existing commit in riscv_kvm_queue.

Thanks,
Anup

>
>
> > Thanks,
> > Haibo
> >
> >>
> >> --- a/tools/testing/selftests/kvm/include/riscv/processor.h
> >> +++ b/tools/testing/selftests/kvm/include/riscv/processor.h
> >> @@ -48,7 +48,7 @@ static inline uint64_t __kvm_reg_id(uint64_t type,
> >> uint64_t subtype,
> >> KVM_REG_RISCV_SBI_SINGLE, \
> >> idx, KVM_REG_SIZE_ULONG)
> >>
> >> -bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext);
> >> +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, uint64_t ext);
> >>
> >> struct ex_regs {
> >> unsigned long ra;
> >> diff --git a/tools/testing/selftests/kvm/lib/riscv/processor.c
> >> b/tools/testing/selftests/kvm/lib/riscv/processor.c
> >> index 282587cd4bbc..ec66d331a127 100644
> >> --- a/tools/testing/selftests/kvm/lib/riscv/processor.c
> >> +++ b/tools/testing/selftests/kvm/lib/riscv/processor.c
> >> @@ -15,12 +15,12 @@
> >>
> >> static vm_vaddr_t exception_handlers;
> >>
> >> -bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext)
> >> +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, uint64_t ext)
> >> {
> >> unsigned long value = 0;
> >> int ret;
> >>
> >> - ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(ext), &value);
> >> + ret = __vcpu_get_reg(vcpu, ext, &value);
> >>
> >> return !ret && !!value;
> >> }
> >>
> >> With the above the fix, Both SBI/ISA extension tests pass.
> >> # ./get-reg-list
> >> sbi-base: PASS
> >> sbi-sta: PASS
> >> sbi-pmu: PASS
> >> sbi-dbcn: PASS
> >> aia: PASS
> >> fp_f: PASS
> >> fp_d: PASS
> >> 1..0 # SKIP - h not available, skipping tests
> >> smstateen: PASS
> >> sscofpmf: PASS
> >> sstc: PASS
> >> 1..0 # SKIP - svinval not available, skipping tests
> >> 1..0 # SKIP - svnapot not available, skipping tests
> >> 1..0 # SKIP - svpbmt not available, skipping tests
> >> zba: PASS
> >> zbb: PASS
> >> zbc: PASS
> >> 1..0 # SKIP - zbkb not available, skipping tests
> >> 1..0 # SKIP - zbkc not available, skipping tests
> >> 1..0 # SKIP - zbkx not available, skipping tests
> >> zbs: PASS
> >> zfa: PASS
> >> 1..0 # SKIP - zfh not available, skipping tests
> >> 1..0 # SKIP - zfhmin not available, skipping tests
> >> zicbom: PASS
> >> zicboz: PASS
> >> zicntr: PASS
> >> 1..0 # SKIP - zicond not available, skipping tests
> >> zicsr: PASS
> >> zifencei: PASS
> >> zihintntl: PASS
> >> zihintpause: PASS
> >> zihpm: PASS
> >>
> >>
> >>>   static uint64_t page_align(struct kvm_vm *vm, uint64_t v)
> >>>   {
> >>>          return (v + vm->page_size) & ~(vm->page_size - 1);
> >>> diff --git a/tools/testing/selftests/kvm/riscv/get-reg-list.c b/tools/testing/selftests/kvm/riscv/get-reg-list.c
> >>> index 25de4b8bc347..ed29ba45588c 100644
> >>> --- a/tools/testing/selftests/kvm/riscv/get-reg-list.c
> >>> +++ b/tools/testing/selftests/kvm/riscv/get-reg-list.c
> >>> @@ -75,15 +75,6 @@ bool check_reject_set(int err)
> >>>          return err == EINVAL;
> >>>   }
> >>>
> >>> -static inline bool vcpu_has_ext(struct kvm_vcpu *vcpu, int ext)
> >>> -{
> >>> -       int ret;
> >>> -       unsigned long value;
> >>> -
> >>> -       ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(ext), &value);
> >>> -       return (ret) ? false : !!value;
> >>> -}
> >>> -
> >>>   void finalize_vcpu(struct kvm_vcpu *vcpu, struct vcpu_reg_list *c)
> >>>   {
> >>>          unsigned long isa_ext_state[KVM_RISCV_ISA_EXT_MAX] = { 0 };
> >>> @@ -111,7 +102,7 @@ void finalize_vcpu(struct kvm_vcpu *vcpu, struct vcpu_reg_list *c)
> >>>                  __vcpu_set_reg(vcpu, RISCV_ISA_EXT_REG(s->feature), 1);
> >>>
> >>>                  /* Double check whether the desired extension was enabled */
> >>> -               __TEST_REQUIRE(vcpu_has_ext(vcpu, s->feature),
> >>> +               __TEST_REQUIRE(__vcpu_has_ext(vcpu, s->feature),
> >>>                                 "%s not available, skipping tests\n", s->name);
> >>>          }
> >>>   }
> >>> --
> >>> 2.34.1
> >>>
> >>
> >>
> >> --
> >> Regards,
> >> Atish
>

Haibo Xu Feb. 26, 2024, 5:47 a.m. UTC | #7

On Mon, Feb 26, 2024 at 1:20 PM Anup Patel <[e-mail]> wrote:
>
> On Wed, Feb 21, 2024 at 2:07 PM Atish Patra <[e-mail]> wrote:
> >
> > On 2/20/24 18:13, Haibo Xu wrote:
> > > On Wed, Feb 21, 2024 at 7:03 AM Atish Patra <[e-mail]> wrote:
> > >>
> > >> On Mon, Jan 22, 2024 at 1:48 AM Haibo Xu <[e-mail]> wrote:
> > >>>
> > >>> Move vcpu_has_ext to the processor.c and rename it to __vcpu_has_ext
> > >>> so that other test cases can use it for vCPU extension check.
> > >>>
> > >>> Signed-off-by: Haibo Xu <[e-mail]>
> > >>> Reviewed-by: Andrew Jones <[e-mail]>
> > >>> ---
> > >>>   tools/testing/selftests/kvm/include/riscv/processor.h |  2 ++
> > >>>   tools/testing/selftests/kvm/lib/riscv/processor.c     | 10 ++++++++++
> > >>>   tools/testing/selftests/kvm/riscv/get-reg-list.c      | 11 +----------
> > >>>   3 files changed, 13 insertions(+), 10 deletions(-)
> > >>>
> > >>> diff --git a/tools/testing/selftests/kvm/include/riscv/processor.h b/tools/testing/selftests/kvm/include/riscv/processor.h
> > >>> index b68b1b731a34..bd27e1c67579 100644
> > >>> --- a/tools/testing/selftests/kvm/include/riscv/processor.h
> > >>> +++ b/tools/testing/selftests/kvm/include/riscv/processor.h
> > >>> @@ -42,6 +42,8 @@ static inline uint64_t __kvm_reg_id(uint64_t type, uint64_t idx,
> > >>>   #define RISCV_ISA_EXT_REG(idx) __kvm_reg_id(KVM_REG_RISCV_ISA_EXT, \
> > >>>                                               idx, KVM_REG_SIZE_ULONG)
> > >>>
> > >>> +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext);
> > >>> +
> > >>>   struct ex_regs {
> > >>>          unsigned long ra;
> > >>>          unsigned long sp;
> > >>> diff --git a/tools/testing/selftests/kvm/lib/riscv/processor.c b/tools/testing/selftests/kvm/lib/riscv/processor.c
> > >>> index 39a1e9902dec..dad73ce18164 100644
> > >>> --- a/tools/testing/selftests/kvm/lib/riscv/processor.c
> > >>> +++ b/tools/testing/selftests/kvm/lib/riscv/processor.c
> > >>> @@ -15,6 +15,16 @@
> > >>>
> > >>>   static vm_vaddr_t exception_handlers;
> > >>>
> > >>> +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext)
> > >>> +{
> > >>> +       unsigned long value = 0;
> > >>> +       int ret;
> > >>> +
> > >>> +       ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(ext), &value);
> > >>> +
> > >>> +       return !ret && !!value;
> > >>> +}
> > >>> +
> > >>
> > >> Not sure what was the base patch on which this was rebased. The actual
> > >> commit in the queue branch looks different.
> > >>
> > >
> > > This patch set was based on 6.7-rc8.
> > >
> > >> https://github.com/kvm-riscv/linux/commit/5563517cc2012e3326411b360c9924d3f2706c8d
> > >>
> > >> Both seem to have the same bug though the tests fail now and require
> > >> the following fix.
> > >> The ext id should be uint64_t and we need to pass ext directly so that
> > >> SBI extension tests can also pass.
> > >>
> > >
> > > It's weird that 6.7-rc8 has already included Andrew's change on the ISA ext reg,
> > > but this patch was not generated against his change.
> > >
> > > commit bdf6aa328f137e184b0fce607fd585354c3742f1
> > > Author: Andrew Jones <[e-mail]>
> > > Date:   Wed Dec 13 18:09:58 2023 +0100
> > >
> > >      RISC-V: KVM: selftests: Treat SBI ext regs like ISA ext regs
> > >
> > > Anyway, your changes were right. Please go ahead to include them when merging.
> > >
> >
> > I am not sure what happened. Probably, a merge conflict issue.
> >
> > I just realized I forgot to copy paste another fix in arch timer
> >
> > +++ b/tools/testing/selftests/kvm/riscv/arch_timer.c
> > @@ -85,7 +85,7 @@ struct kvm_vm *test_vm_create(void)
> >          int nr_vcpus = test_args.nr_vcpus;
> >
> >          vm = vm_create_with_vcpus(nr_vcpus, guest_code, vcpus);
> > -       __TEST_REQUIRE(__vcpu_has_ext(vcpus[0], KVM_RISCV_ISA_EXT_SSTC),
> > +       __TEST_REQUIRE(__vcpu_has_ext(vcpus[0],
> > RISCV_ISA_EXT_REG(KVM_RISCV_ISA_EXT_SSTC)),
>
> I have squashed this change into an existing commit in riscv_kvm_queue.
>
> Thanks,
> Anup
>

Thanks a lot, Anup!

> >
> >
> > > Thanks,
> > > Haibo
> > >
> > >>
> > >> --- a/tools/testing/selftests/kvm/include/riscv/processor.h
> > >> +++ b/tools/testing/selftests/kvm/include/riscv/processor.h
> > >> @@ -48,7 +48,7 @@ static inline uint64_t __kvm_reg_id(uint64_t type,
> > >> uint64_t subtype,
> > >> KVM_REG_RISCV_SBI_SINGLE, \
> > >> idx, KVM_REG_SIZE_ULONG)
> > >>
> > >> -bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext);
> > >> +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, uint64_t ext);
> > >>
> > >> struct ex_regs {
> > >> unsigned long ra;
> > >> diff --git a/tools/testing/selftests/kvm/lib/riscv/processor.c
> > >> b/tools/testing/selftests/kvm/lib/riscv/processor.c
> > >> index 282587cd4bbc..ec66d331a127 100644
> > >> --- a/tools/testing/selftests/kvm/lib/riscv/processor.c
> > >> +++ b/tools/testing/selftests/kvm/lib/riscv/processor.c
> > >> @@ -15,12 +15,12 @@
> > >>
> > >> static vm_vaddr_t exception_handlers;
> > >>
> > >> -bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext)
> > >> +bool __vcpu_has_ext(struct kvm_vcpu *vcpu, uint64_t ext)
> > >> {
> > >> unsigned long value = 0;
> > >> int ret;
> > >>
> > >> - ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(ext), &value);
> > >> + ret = __vcpu_get_reg(vcpu, ext, &value);
> > >>
> > >> return !ret && !!value;
> > >> }
> > >>
> > >> With the above the fix, Both SBI/ISA extension tests pass.
> > >> # ./get-reg-list
> > >> sbi-base: PASS
> > >> sbi-sta: PASS
> > >> sbi-pmu: PASS
> > >> sbi-dbcn: PASS
> > >> aia: PASS
> > >> fp_f: PASS
> > >> fp_d: PASS
> > >> 1..0 # SKIP - h not available, skipping tests
> > >> smstateen: PASS
> > >> sscofpmf: PASS
> > >> sstc: PASS
> > >> 1..0 # SKIP - svinval not available, skipping tests
> > >> 1..0 # SKIP - svnapot not available, skipping tests
> > >> 1..0 # SKIP - svpbmt not available, skipping tests
> > >> zba: PASS
> > >> zbb: PASS
> > >> zbc: PASS
> > >> 1..0 # SKIP - zbkb not available, skipping tests
> > >> 1..0 # SKIP - zbkc not available, skipping tests
> > >> 1..0 # SKIP - zbkx not available, skipping tests
> > >> zbs: PASS
> > >> zfa: PASS
> > >> 1..0 # SKIP - zfh not available, skipping tests
> > >> 1..0 # SKIP - zfhmin not available, skipping tests
> > >> zicbom: PASS
> > >> zicboz: PASS
> > >> zicntr: PASS
> > >> 1..0 # SKIP - zicond not available, skipping tests
> > >> zicsr: PASS
> > >> zifencei: PASS
> > >> zihintntl: PASS
> > >> zihintpause: PASS
> > >> zihpm: PASS
> > >>
> > >>
> > >>>   static uint64_t page_align(struct kvm_vm *vm, uint64_t v)
> > >>>   {
> > >>>          return (v + vm->page_size) & ~(vm->page_size - 1);
> > >>> diff --git a/tools/testing/selftests/kvm/riscv/get-reg-list.c b/tools/testing/selftests/kvm/riscv/get-reg-list.c
> > >>> index 25de4b8bc347..ed29ba45588c 100644
> > >>> --- a/tools/testing/selftests/kvm/riscv/get-reg-list.c
> > >>> +++ b/tools/testing/selftests/kvm/riscv/get-reg-list.c
> > >>> @@ -75,15 +75,6 @@ bool check_reject_set(int err)
> > >>>          return err == EINVAL;
> > >>>   }
> > >>>
> > >>> -static inline bool vcpu_has_ext(struct kvm_vcpu *vcpu, int ext)
> > >>> -{
> > >>> -       int ret;
> > >>> -       unsigned long value;
> > >>> -
> > >>> -       ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(ext), &value);
> > >>> -       return (ret) ? false : !!value;
> > >>> -}
> > >>> -
> > >>>   void finalize_vcpu(struct kvm_vcpu *vcpu, struct vcpu_reg_list *c)
> > >>>   {
> > >>>          unsigned long isa_ext_state[KVM_RISCV_ISA_EXT_MAX] = { 0 };
> > >>> @@ -111,7 +102,7 @@ void finalize_vcpu(struct kvm_vcpu *vcpu, struct vcpu_reg_list *c)
> > >>>                  __vcpu_set_reg(vcpu, RISCV_ISA_EXT_REG(s->feature), 1);
> > >>>
> > >>>                  /* Double check whether the desired extension was enabled */
> > >>> -               __TEST_REQUIRE(vcpu_has_ext(vcpu, s->feature),
> > >>> +               __TEST_REQUIRE(__vcpu_has_ext(vcpu, s->feature),
> > >>>                                 "%s not available, skipping tests\n", s->name);
> > >>>          }
> > >>>   }
> > >>> --
> > >>> 2.34.1
> > >>>
> > >>
> > >>
> > >> --
> > >> Regards,
> > >> Atish
> >

Patch

diff --git a/tools/testing/selftests/kvm/include/riscv/processor.h b/tools/testing/selftests/kvm/include/riscv/processor.h
index b68b1b731a34..bd27e1c67579 100644
--- a/tools/testing/selftests/kvm/include/riscv/processor.h
+++ b/tools/testing/selftests/kvm/include/riscv/processor.h
@@ -42,6 +42,8 @@  static inline uint64_t __kvm_reg_id(uint64_t type, uint64_t idx,
 #define RISCV_ISA_EXT_REG(idx)	__kvm_reg_id(KVM_REG_RISCV_ISA_EXT, \
 					     idx, KVM_REG_SIZE_ULONG)
 
+bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext);
+
 struct ex_regs {
 	unsigned long ra;
 	unsigned long sp;
diff --git a/tools/testing/selftests/kvm/lib/riscv/processor.c b/tools/testing/selftests/kvm/lib/riscv/processor.c
index 39a1e9902dec..dad73ce18164 100644
--- a/tools/testing/selftests/kvm/lib/riscv/processor.c
+++ b/tools/testing/selftests/kvm/lib/riscv/processor.c
@@ -15,6 +15,16 @@ 
 
 static vm_vaddr_t exception_handlers;
 
+bool __vcpu_has_ext(struct kvm_vcpu *vcpu, int ext)
+{
+	unsigned long value = 0;
+	int ret;
+
+	ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(ext), &value);
+
+	return !ret && !!value;
+}
+
 static uint64_t page_align(struct kvm_vm *vm, uint64_t v)
 {
 	return (v + vm->page_size) & ~(vm->page_size - 1);
diff --git a/tools/testing/selftests/kvm/riscv/get-reg-list.c b/tools/testing/selftests/kvm/riscv/get-reg-list.c
index 25de4b8bc347..ed29ba45588c 100644
--- a/tools/testing/selftests/kvm/riscv/get-reg-list.c
+++ b/tools/testing/selftests/kvm/riscv/get-reg-list.c
@@ -75,15 +75,6 @@  bool check_reject_set(int err)
 	return err == EINVAL;
 }
 
-static inline bool vcpu_has_ext(struct kvm_vcpu *vcpu, int ext)
-{
-	int ret;
-	unsigned long value;
-
-	ret = __vcpu_get_reg(vcpu, RISCV_ISA_EXT_REG(ext), &value);
-	return (ret) ? false : !!value;
-}
-
 void finalize_vcpu(struct kvm_vcpu *vcpu, struct vcpu_reg_list *c)
 {
 	unsigned long isa_ext_state[KVM_RISCV_ISA_EXT_MAX] = { 0 };
@@ -111,7 +102,7 @@  void finalize_vcpu(struct kvm_vcpu *vcpu, struct vcpu_reg_list *c)
 		__vcpu_set_reg(vcpu, RISCV_ISA_EXT_REG(s->feature), 1);
 
 		/* Double check whether the desired extension was enabled */
-		__TEST_REQUIRE(vcpu_has_ext(vcpu, s->feature),
+		__TEST_REQUIRE(__vcpu_has_ext(vcpu, s->feature),
 			       "%s not available, skipping tests\n", s->name);
 	}
 }