Re: [Xen-devel] [PATCH] minios: Correct HYPERVISOR_physdev_op()

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 27/01/14 17:18, Ian Campbell wrote:
> On Fri, 2014-01-24 at 18:28 +0000, Andrew Cooper wrote:
>> A physdev_op is a two argument hypercall, taking a command paramter and an
>> optional pointer to a structure.
>>
>> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
>> CC: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
>> CC: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>
> This hypercall is unused in minios and stubdoms I think? (Trying to
> gauge how critical the error is).

Correct.  I suppose it is more of a "nice to fix" than "must fix" at
this stage, although I was quite surprised that I needed to fix it.

~Andrew

>
>> ---
>>  extras/mini-os/include/x86/x86_32/hypercall-x86_32.h |    4 ++--
>>  extras/mini-os/include/x86/x86_64/hypercall-x86_64.h |    4 ++--
>>  2 files changed, 4 insertions(+), 4 deletions(-)
>>
>> diff --git a/extras/mini-os/include/x86/x86_32/hypercall-x86_32.h 
>> b/extras/mini-os/include/x86/x86_32/hypercall-x86_32.h
>> index ef52ecd..dcfbe41 100644
>> --- a/extras/mini-os/include/x86/x86_32/hypercall-x86_32.h
>> +++ b/extras/mini-os/include/x86/x86_32/hypercall-x86_32.h
>> @@ -255,9 +255,9 @@ HYPERVISOR_console_io(
>>  
>>  static inline int
>>  HYPERVISOR_physdev_op(
>> -    void *physdev_op)
>> +    int cmd, void *physdev_op)
>>  {
>> -    return _hypercall1(int, physdev_op, physdev_op);
>> +    return _hypercall2(int, physdev_op, cmd, physdev_op);
>>  }
>>  
>>  static inline int
>> diff --git a/extras/mini-os/include/x86/x86_64/hypercall-x86_64.h 
>> b/extras/mini-os/include/x86/x86_64/hypercall-x86_64.h
>> index 513d74e..7083763 100644
>> --- a/extras/mini-os/include/x86/x86_64/hypercall-x86_64.h
>> +++ b/extras/mini-os/include/x86/x86_64/hypercall-x86_64.h
>> @@ -256,9 +256,9 @@ HYPERVISOR_console_io(
>>  
>>  static inline int
>>  HYPERVISOR_physdev_op(
>> -    void *physdev_op)
>> +    int cmd, void *physdev_op)
>>  {
>> -    return _hypercall1(int, physdev_op, physdev_op);
>> +    return _hypercall2(int, physdev_op, cmd, physdev_op);
>>  }
>>  
>>  static inline int
>


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