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[Qemu-arm] [RFC PATCH v1 0/2] Live migration optimization for Thunderx p
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From: |
vijay . kilari |
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Subject: |
[Qemu-arm] [RFC PATCH v1 0/2] Live migration optimization for Thunderx platform |
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Date: |
Tue, 2 Aug 2016 15:50:14 +0530 |
From: Vijaya Kumar K <address@hidden>
The CPU MIDR_EL1 register is exposed to userspace for arm64
with the below patch.
https://lkml.org/lkml/2016/7/8/467
Thunderx platform requires explicit prefetch instruction to
provide prefetch hint. Using MIDR_EL1 information, provided
by above kernel patch, prefetch is executed if the platform
is Thunderx.
The results of live migration time improvement is provided
in commit message of patch 2.
Vijaya Kumar K (2):
utils: Add helper to read arm MIDR_EL1 register
utils: Add prefetch for Thunderx platform
include/qemu-common.h | 2 ++
util/Makefile.objs | 1 +
util/cpuinfo.c | 90 +++++++++++++++++++++++++++++++++++++++++++++++++
util/cutils.c | 22 ++++++++++++
4 files changed, 115 insertions(+)
create mode 100644 util/cpuinfo.c
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1.7.9.5