[RFC PATCH 0/3] Add a new flag for ITS device to control indirect route

Majun
2016-12-01T07:45:57Z

From: MaJun <majun258@huawei.com>

For current ITS driver, two level table (indirect route) is enabled when the memory used
for LPI route table over the limit(64KB * 2) size. But this function impact the
performance of LPI interrupt actually because need more time to look up the table.

Although this function can save the memory needed, we'd better let the user
to decide enable or disable this function.

MaJun (3):
Binding: Add a new property string in ITS node to control the two-level route function
irqchip/gicv3-its:irqchip/gicv3-its: add a new flag to control indirect route in DT mode
irqchip/gicv3-its:irqchip/gicv3-its: Add a new flag to control indirect route function in ACPI mode.

.../bindings/interrupt-controller/arm,gic-v3.txt | 3 +++
drivers/irqchip/irq-gic-v3-its.c | 19 ++++++++++++++-----
include/acpi/actbl1.h | 3 ++-
3 files changed, 19 insertions(+), 6 deletions(-)

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1.7.12.4