From: Sheng Yang Date: Fri, 14 May 2010 11:40:51 +0000 (+0100) Subject: x86/xen: event channels delivery on HVM. X-Git-Tag: v2.6.36-rc1~551^2~1^2~11 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=38e20b07efd541a959de367dc90a17f92ce2e8a6;p=pandora-kernel.git x86/xen: event channels delivery on HVM. Set the callback to receive evtchns from Xen, using the callback vector delivery mechanism. The traditional way for receiving event channel notifications from Xen is via the interrupts from the platform PCI device. The callback vector is a newer alternative that allow us to receive notifications on any vcpu and doesn't need any PCI support: we allocate a vector exclusively to receive events, in the vector handler we don't need to interact with the vlapic, therefore we avoid a VMEXIT. Signed-off-by: Stefano Stabellini Signed-off-by: Sheng Yang Signed-off-by: Jeremy Fitzhardinge --- Reading git-diff-tree failed