On 18/02/2015 11:41, Julien Grall wrote:
Hi Ian,
On 18/02/2015 11:27, Ian Campbell wrote:
On Thu, 2015-02-12 at 06:34 +0000, Julien Grall wrote:
The function irq_of_parse_and_map returns 0 when the IRQ is not found.
Furthermore xen_events_irq is only read when the CPU is bring up, so
it's not necessary to use the attribute __read_mostly.
Part of the purpose of __read_mostly is to move such things out of
sharing cachelines with other more hot read/write things, as much as it
is to group all the "read only" things together.
Hmmm... You are right. I didn't understand this macro like that.
I will resend the series with this patch drop and add Ard's patch [1].
Actually I'm stupid... This patch is still useful except the __read_mostly.
Regards,
[1] https://patches.linaro.org/44633/
--
Julien Grall
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