Zhang, Yang wrote:
From 2cf75eff171ef823b3b17c945504d0233a6bd427 Mon Sep 17 00:00:00 2001 From: Yang Zhang <yang.zhang@xxxxxxxxx> Date: Mon, 23 Mar 2009 03:31:04 -0400 Subject: [PATCH] KVM: IA64: enable external interrupt in vmm In the previous version, the interrupt bit is cleared when in the vmm. This patch opens the bit and the externanl interrupt can be deal with when in the vmm. It will improve the I/O performance.
I'm surprised it doesn't work this way already. What happens now if the guest disables interrupts and spins?
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