Re: [PATCH v4 06/18] x86/apic: Add update_vector callback for Secure AVIC

[Neeraj Upadhyay <Neeraj.Upadhyay@amd.com>]

On 4/17/2025 4:22 PM, Thomas Gleixner wrote:
> On Thu, Apr 17 2025 at 14:46, Neeraj Upadhyay wrote:
>> +
>> +static inline void update_vector(unsigned int cpu, unsigned int offset,
>> +				 unsigned int vector, bool set)
>> +{
>> +	unsigned long *reg = get_reg_bitmap(cpu, offset);
>> +	unsigned int bit = get_vec_bit(vector);
>> +
>> +	if (set)
>> +		set_bit(bit, reg);
>> +	else
>> +		clear_bit(bit, reg);
>> +}
>   
>> +static void savic_update_vector(unsigned int cpu, unsigned int vector, bool set)
>> +{
>> +	update_vector(cpu, SAVIC_ALLOWED_IRR, vector, set);
> 
> This indirection is required because otherwise the code is too simple to
> follow?
> 

update_vector() is used by send_ipi_dest() in Patch 7. From your comment
on v3 https://lore.kernel.org/lkml/87y0whv57k.ffs@tglx/ , what I understood
was that you wanted update_vector() to be defined in the patch where that code
is added (i.e. this patch) and not at a later patch. Is that not correct
understanding?


- Neeraj