On 06/06/2013 05:41 PM, David Gibson wrote: > On Wed, Jun 05, 2013 at 05:39:58PM +1000, Alexey Kardashevskiy wrote: >> From: David Gibson <da...@gibson.dropbear.id.au> >> >> Recent (host) kernels support emulating the PAPR defined "XICS" interrupt >> controller system within KVM. This patch allows qemu to initialize and >> configure the in-kernel XICS, and keep its state in sync with qemu's XICS >> state as necessary. >> >> This should give considerable performance improvements. e.g. on a simple >> IPI ping-pong test between hardware threads, using qemu XICS gives us >> around 5,000 irqs/second, whereas the in-kernel XICS gives us around >> 70,000 irqs/s on the same hardware configuration. >> >> [Mike Qiu <qiud...@linux.vnet.ibm.com>: fixed mistype which caused >> ics_set_kvm_state() to fail] >> Signed-off-by: David Gibson <da...@gibson.dropbear.id.au> >> Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru> > > I think this one also needs the headers update for qemu first, yes?
Yes, my bad, I sent headers patch + one patch which Scott Wood already posted. -- Alexey
