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[Qemu-ppc] [PATCH 1.7 v2 0/2] PPC: Fix BookE timer performance regressio
From: |
Alexander Graf |
Subject: |
[Qemu-ppc] [PATCH 1.7 v2 0/2] PPC: Fix BookE timer performance regression |
Date: |
Mon, 25 Nov 2013 22:46:53 +0100 |
Thanks to the new timer infrastructure we are now able to trigger timer events
and ridiculous granularities in sub-microsecond orders.
However, the BookE targets were quite unhappy about that change, showing up
to x10 slowdown on a simple Linux guest bootup test.
This patch set makes the constant timer facilities in BookE more lazy and less
fine grained than they could be. That way we're at least as good as we were in
QEMU 1.6.
---
v1 -> v2:
- add parenthesis
- use QEMUTimer *
- s/microsecond/millisecond/g
Alexander Graf (2):
PPC: Make BookE FIT/WDT timers more lazy
PPC: BookE: Make FIT/WDT timers at best millisecond grained
hw/ppc/ppc_booke.c | 49 ++++++++++++++++++++++++++++++++++++++++++++-----
1 file changed, 44 insertions(+), 5 deletions(-)
--
1.8.1.4
- [Qemu-ppc] [PATCH 1.7 v2 0/2] PPC: Fix BookE timer performance regression,
Alexander Graf <=