2019-07-12 12:06:03

by Zhenzhong Duan

[permalink] [raw]
Subject: [PATCH v7 4/5] x86/paravirt: Remove const mark from x86_hyper_xen_hvm variable

.. as "nopv" support needs it to be changeable at boot up stage.

Checkpatch report warning, so move variable declarations from
hypervisor.c to hypervisor.h

Signed-off-by: Zhenzhong Duan <[email protected]>
Cc: Boris Ostrovsky <[email protected]>
Cc: Juergen Gross <[email protected]>
Cc: Stefano Stabellini <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Borislav Petkov <[email protected]>
---
arch/x86/include/asm/hypervisor.h | 8 ++++++++
arch/x86/kernel/cpu/hypervisor.c | 8 --------
2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/arch/x86/include/asm/hypervisor.h b/arch/x86/include/asm/hypervisor.h
index f7b4c53..e41cbf2 100644
--- a/arch/x86/include/asm/hypervisor.h
+++ b/arch/x86/include/asm/hypervisor.h
@@ -58,6 +58,14 @@ struct hypervisor_x86 {
bool ignore_nopv;
};

+extern const struct hypervisor_x86 x86_hyper_vmware;
+extern const struct hypervisor_x86 x86_hyper_ms_hyperv;
+extern const struct hypervisor_x86 x86_hyper_xen_pv;
+extern const struct hypervisor_x86 x86_hyper_kvm;
+extern const struct hypervisor_x86 x86_hyper_jailhouse;
+extern const struct hypervisor_x86 x86_hyper_acrn;
+extern struct hypervisor_x86 x86_hyper_xen_hvm;
+
extern bool nopv;
extern enum x86_hypervisor_type x86_hyper_type;
extern void init_hypervisor_platform(void);
diff --git a/arch/x86/kernel/cpu/hypervisor.c b/arch/x86/kernel/cpu/hypervisor.c
index 7eaad41..553bfbf 100644
--- a/arch/x86/kernel/cpu/hypervisor.c
+++ b/arch/x86/kernel/cpu/hypervisor.c
@@ -26,14 +26,6 @@
#include <asm/processor.h>
#include <asm/hypervisor.h>

-extern const struct hypervisor_x86 x86_hyper_vmware;
-extern const struct hypervisor_x86 x86_hyper_ms_hyperv;
-extern const struct hypervisor_x86 x86_hyper_xen_pv;
-extern const struct hypervisor_x86 x86_hyper_xen_hvm;
-extern const struct hypervisor_x86 x86_hyper_kvm;
-extern const struct hypervisor_x86 x86_hyper_jailhouse;
-extern const struct hypervisor_x86 x86_hyper_acrn;
-
static const __initconst struct hypervisor_x86 * const hypervisors[] =
{
#ifdef CONFIG_XEN_PV
--
1.8.3.1


2019-07-16 10:58:55

by Jürgen Groß

[permalink] [raw]
Subject: Re: [PATCH v7 4/5] x86/paravirt: Remove const mark from x86_hyper_xen_hvm variable

On 11.07.19 14:02, Zhenzhong Duan wrote:
> .. as "nopv" support needs it to be changeable at boot up stage.
>
> Checkpatch report warning, so move variable declarations from
> hypervisor.c to hypervisor.h
>
> Signed-off-by: Zhenzhong Duan <[email protected]>
> Cc: Boris Ostrovsky <[email protected]>
> Cc: Juergen Gross <[email protected]>
> Cc: Stefano Stabellini <[email protected]>
> Cc: Thomas Gleixner <[email protected]>
> Cc: Ingo Molnar <[email protected]>
> Cc: Borislav Petkov <[email protected]>
> ---
> arch/x86/include/asm/hypervisor.h | 8 ++++++++
> arch/x86/kernel/cpu/hypervisor.c | 8 --------
> 2 files changed, 8 insertions(+), 8 deletions(-)
>
> diff --git a/arch/x86/include/asm/hypervisor.h b/arch/x86/include/asm/hypervisor.h
> index f7b4c53..e41cbf2 100644
> --- a/arch/x86/include/asm/hypervisor.h
> +++ b/arch/x86/include/asm/hypervisor.h
> @@ -58,6 +58,14 @@ struct hypervisor_x86 {
> bool ignore_nopv;
> };
>
> +extern const struct hypervisor_x86 x86_hyper_vmware;
> +extern const struct hypervisor_x86 x86_hyper_ms_hyperv;
> +extern const struct hypervisor_x86 x86_hyper_xen_pv;
> +extern const struct hypervisor_x86 x86_hyper_kvm;
> +extern const struct hypervisor_x86 x86_hyper_jailhouse;
> +extern const struct hypervisor_x86 x86_hyper_acrn;
> +extern struct hypervisor_x86 x86_hyper_xen_hvm;

This should either stay const and be changed in patch 5, or you
should adapt its definition in arch/x86/xen/enlighten_hvm.c in
this patch.


Juergen

2019-07-17 02:12:30

by Zhenzhong Duan

[permalink] [raw]
Subject: Re: [PATCH v7 4/5] x86/paravirt: Remove const mark from x86_hyper_xen_hvm variable


On 2019/7/16 18:57, Juergen Gross wrote:
> On 11.07.19 14:02, Zhenzhong Duan wrote:
>> .. as "nopv" support needs it to be changeable at boot up stage.
>>
>> Checkpatch report warning, so move variable declarations from
>> hypervisor.c to hypervisor.h
>>
>> Signed-off-by: Zhenzhong Duan <[email protected]>
>> Cc: Boris Ostrovsky <[email protected]>
>> Cc: Juergen Gross <[email protected]>
>> Cc: Stefano Stabellini <[email protected]>
>> Cc: Thomas Gleixner <[email protected]>
>> Cc: Ingo Molnar <[email protected]>
>> Cc: Borislav Petkov <[email protected]>
>> ---
>>   arch/x86/include/asm/hypervisor.h | 8 ++++++++
>>   arch/x86/kernel/cpu/hypervisor.c  | 8 --------
>>   2 files changed, 8 insertions(+), 8 deletions(-)
>>
>> diff --git a/arch/x86/include/asm/hypervisor.h
>> b/arch/x86/include/asm/hypervisor.h
>> index f7b4c53..e41cbf2 100644
>> --- a/arch/x86/include/asm/hypervisor.h
>> +++ b/arch/x86/include/asm/hypervisor.h
>> @@ -58,6 +58,14 @@ struct hypervisor_x86 {
>>       bool ignore_nopv;
>>   };
>>   +extern const struct hypervisor_x86 x86_hyper_vmware;
>> +extern const struct hypervisor_x86 x86_hyper_ms_hyperv;
>> +extern const struct hypervisor_x86 x86_hyper_xen_pv;
>> +extern const struct hypervisor_x86 x86_hyper_kvm;
>> +extern const struct hypervisor_x86 x86_hyper_jailhouse;
>> +extern const struct hypervisor_x86 x86_hyper_acrn;
>> +extern struct hypervisor_x86 x86_hyper_xen_hvm;
>
> This should either stay const and be changed in patch 5, or you
> should adapt its definition in arch/x86/xen/enlighten_hvm.c in
> this patch.

Ok, thanks for your suggestion.

I'll choose 2nd opinion as I don't need to change descripton with that.

Zhenzhong

2019-07-17 03:35:58

by Jürgen Groß

[permalink] [raw]
Subject: Re: [PATCH v7 4/5] x86/paravirt: Remove const mark from x86_hyper_xen_hvm variable

On 17.07.19 04:09, Zhenzhong Duan wrote:
>
> On 2019/7/16 18:57, Juergen Gross wrote:
>> On 11.07.19 14:02, Zhenzhong Duan wrote:
>>> .. as "nopv" support needs it to be changeable at boot up stage.
>>>
>>> Checkpatch report warning, so move variable declarations from
>>> hypervisor.c to hypervisor.h
>>>
>>> Signed-off-by: Zhenzhong Duan <[email protected]>
>>> Cc: Boris Ostrovsky <[email protected]>
>>> Cc: Juergen Gross <[email protected]>
>>> Cc: Stefano Stabellini <[email protected]>
>>> Cc: Thomas Gleixner <[email protected]>
>>> Cc: Ingo Molnar <[email protected]>
>>> Cc: Borislav Petkov <[email protected]>
>>> ---
>>>   arch/x86/include/asm/hypervisor.h | 8 ++++++++
>>>   arch/x86/kernel/cpu/hypervisor.c  | 8 --------
>>>   2 files changed, 8 insertions(+), 8 deletions(-)
>>>
>>> diff --git a/arch/x86/include/asm/hypervisor.h
>>> b/arch/x86/include/asm/hypervisor.h
>>> index f7b4c53..e41cbf2 100644
>>> --- a/arch/x86/include/asm/hypervisor.h
>>> +++ b/arch/x86/include/asm/hypervisor.h
>>> @@ -58,6 +58,14 @@ struct hypervisor_x86 {
>>>       bool ignore_nopv;
>>>   };
>>>   +extern const struct hypervisor_x86 x86_hyper_vmware;
>>> +extern const struct hypervisor_x86 x86_hyper_ms_hyperv;
>>> +extern const struct hypervisor_x86 x86_hyper_xen_pv;
>>> +extern const struct hypervisor_x86 x86_hyper_kvm;
>>> +extern const struct hypervisor_x86 x86_hyper_jailhouse;
>>> +extern const struct hypervisor_x86 x86_hyper_acrn;
>>> +extern struct hypervisor_x86 x86_hyper_xen_hvm;
>>
>> This should either stay const and be changed in patch 5, or you
>> should adapt its definition in arch/x86/xen/enlighten_hvm.c in
>> this patch.
>
> Ok, thanks for your suggestion.
>
> I'll choose 2nd opinion as I don't need to change descripton with that.

Just resend the last two modified patches then, please.


Juergen