Hollis Blanchard wrote:
Hi Avi, here's the latest batch of PowerPC kernel patches.
The first set dramatically improve performance. Most importantly, we add
support for large host pages with KVM (i.e. PAGE_SHIFT > 12). (Large *guest*
pages have already been supported since day 1, since the guest kernel uses
them for the linear map.) Followup patches further improve performance by
changing how we manage the shadow TLB.
The last two add some accounting code to easily discover performance
bottlenecks. This is especially important since the 440 core lacks performance
monitoring hardware.
These patches, in conjunction with 64KB pages on guest and host, get us to 96%
of native performance for compute-bound workloads, which I'm pretty happy
with. See http://kvm.qumranet.com/kvmwiki/PowerPC_Exittimings for more
details (those statistics were gathered using the accounting patches).
These have been tested pretty thoroughly for several weeks. Please apply for
2.6.29. Thanks!
Applied all, thanks.
I'm not thrilled about the private exit timing statistics gathering,
hopefully it can be morphed into the more general framework.
--
error compiling committee.c: too many arguments to function
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