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authorSheng Yang <sheng@linux.intel.com>2010-05-14 12:40:51 +0100
committerJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2010-07-22 16:45:59 -0700
commit38e20b07efd541a959de367dc90a17f92ce2e8a6 (patch)
treebb087e243bf6e707dd063be2024a3b90de2f9413 /drivers/tc/Makefile
parentbee6ab53e652a414af20392899879b58cd80d033 (diff)
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 <stefano.stabellini@eu.citrix.com> Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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