Hi Ian,
On 15/07/2015 10:32, Ian Campbell wrote:
and save 2 byte if not more with the alignment per irq_desc.
If this is a concern then I would say we would either want a separate
array of per-pLPI information which we do not want in irq_desc because
it is irq specific, or do add a pointer to its_desc which points to an
array of per-event information.
I noticed that we have a field msi_desc in the structure irq_desc. On
ARM, the structure msi_desc is not defined at all but still waste a 8
byte for the pointer in the irq_desc.
Given that LPI is an MSI, I'm wondering if we could move all LPI related
data in this msi_desc. This would avoid to introduce new field in the
irq_desc structure.
The msi_desc would look like:
struct msi_desc
{
its_device *dev;
unsigned int eventID;
};
Regards,
--
Julien Grall
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