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Re: [PATCH] x86/vrtc: Use a real type for rtc_ioport_write()
- To: Jan Beulich <jbeulich@xxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Tue, 28 Jul 2026 13:39:22 +0100
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger@xxxxxxxxxxxxxx>, Teddy Astie <teddy.astie@xxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Tue, 28 Jul 2026 12:39:33 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 28/07/2026 1:36 pm, Jan Beulich wrote:
> On 28.07.2026 14:31, Andrew Cooper wrote:
>> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
Thanks.
>
>> --- a/xen/arch/x86/hvm/rtc.c
>> +++ b/xen/arch/x86/hvm/rtc.c
>> @@ -469,9 +469,8 @@ static void cf_check rtc_alarm_cb(void *opaque)
>> spin_unlock(&s->lock);
>> }
>>
>> -static int rtc_ioport_write(void *opaque, uint32_t addr, uint32_t data)
>> +static int rtc_ioport_write(RTCState *s, uint32_t addr, uint32_t data)
>> {
>> - RTCState *s = opaque;
>> struct domain *d = vrtc_domain(s);
>> uint32_t orig;
> It's entirely unclear why it was ever done like this. Even in 3.2 it could
> already have been done the type-correct way.
There are a whole bunch of callbacks which use this pattern. They must
continue to use void * for the function types to work.
I wonder if at any point in the past rtc_ioport_write() was used
directly as a pointee, but I haven't gone looking.
~Andrew
|
