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| /openbmc/linux/drivers/irqchip/ |
| H A D | irq-gic-v3-its.c | 2fd632a0 Wed Jan 25 21:51:41 CST 2017 Shanker Donthineni <shankerd@codeaurora.org> irqchip/gic-v3-its: Enable cacheable attribute Read-allocate hints
Read-allocation hints are not enabled for both the GIC-ITS and GICR
tables. This forces the hardware to always read the table contents
from an external memory (DDR) which is slow compared to cache memory.
Most of the tables are often read by hardware. So, it's better to
enable Read-allocate hints in addition to Write-allocate hints in
order to improve the GICR_PEND, GICR_PROP, Collection, Device, and
vCPU tables lookup time.
Signed-off-by: Shanker Donthineni <shankerd@codeaurora.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2fd632a0 Wed Jan 25 21:51:41 CST 2017 Shanker Donthineni <shankerd@codeaurora.org> irqchip/gic-v3-its: Enable cacheable attribute Read-allocate hints
Read-allocation hints are not enabled for both the GIC-ITS and GICR
tables. This forces the hardware to always read the table contents
from an external memory (DDR) which is slow compared to cache memory.
Most of the tables are often read by hardware. So, it's better to
enable Read-allocate hints in addition to Write-allocate hints in
order to improve the GICR_PEND, GICR_PROP, Collection, Device, and
vCPU tables lookup time.
Signed-off-by: Shanker Donthineni <shankerd@codeaurora.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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