linux-kernel - Re: [PATCHv4 0/5] apic: eoi optimization support

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Message-ID: <20120516154103.GA10320@redhat.com>
Date:	Wed, 16 May 2012 18:41:04 +0300
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	x86@...nel.org, kvm@...r.kernel.org
Cc:	Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>,
	Avi Kivity <avi@...hat.com>,
	Marcelo Tosatti <mtosatti@...hat.com>, gleb@...hat.com,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCHv4 0/5] apic: eoi optimization support

On Wed, May 16, 2012 at 02:45:50PM +0300, Michael S. Tsirkin wrote:
> I'm looking at reducing the interrupt overhead for virtualized guests:
> some workloads spend a large part of their time processing interrupts.
> This patchset supplies infrastructure to reduce the IRQ ack overhead on
> x86: the idea is to add an eoi_write callback that we can then optimize
> without touching other apic functionality.

Ugh. I lost first part of the patchset.
Sorry.
Will send a fixed one now.
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