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Re: [PATCH v8 1/2] xen/vpci: header: status register handler


  • To: Stewart Hildebrand <stewart.hildebrand@xxxxxxx>
  • From: Jan Beulich <jbeulich@xxxxxxxx>
  • Date: Thu, 30 Nov 2023 09:40:14 +0100
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  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx, Wei Liu <wl@xxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
  • Delivery-date: Thu, 30 Nov 2023 08:40:50 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 29.11.2023 16:18, Stewart Hildebrand wrote:
> On 11/29/23 06:03, Roger Pau Monné wrote:
>> On Tue, Nov 28, 2023 at 02:44:24PM -0500, Stewart Hildebrand wrote:
>>> @@ -407,26 +445,26 @@ uint32_t vpci_read(pci_sbdf_t sbdf, unsigned int reg, 
>>> unsigned int size)
>>>  
>>>  /*
>>>   * Perform a maybe partial write to a register.
>>> - *
>>> - * Note that this will only work for simple registers, if Xen needs to
>>> - * trap accesses to rw1c registers (like the status PCI header register)
>>> - * the logic in vpci_write will have to be expanded in order to correctly
>>> - * deal with them.
>>>   */
>>>  static void vpci_write_helper(const struct pci_dev *pdev,
>>>                                const struct vpci_register *r, unsigned int 
>>> size,
>>>                                unsigned int offset, uint32_t data)
>>>  {
>>> +    uint32_t val = 0;
>>
>> Nit: might be clearer to name this 'current': it's easy to get
>> confused whether val or data holds the user-provided input.
> 
> The name 'current' shadows an existing global variable/macro. How about 
> current_val?

Or curval? Or just cur (to not collide with our common use of curr)?

Jan



 


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