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xen-devel
[Xen-devel] Re: [PATCH 3/9] x86/paravirt: remove lazy mode in interrupts
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To: |
Zachary Amsden <zach@xxxxxxxxxx> |
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Subject: |
[Xen-devel] Re: [PATCH 3/9] x86/paravirt: remove lazy mode in interrupts |
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From: |
Jeremy Fitzhardinge <jeremy@xxxxxxxx> |
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Date: |
Wed, 18 Feb 2009 16:17:20 -0800 |
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Cc: |
Nick Piggin <npiggin@xxxxxxx>, Rusty Russell <rusty@xxxxxxxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, the arch/x86 maintainers <x86@xxxxxxxxxx>, Alok Kataria <akataria@xxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Marcelo Tosatti <mtosatti@xxxxxxxxxx>, Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Avi Kivity <avi@xxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> |
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Wed, 18 Feb 2009 16:17:49 -0800 |
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Zachary Amsden wrote:
On Wed, 2009-02-18 at 14:30 -0800, Jeremy Fitzhardinge wrote:
From: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
Make paravirt_lazy_mode() always return PARAVIRT_LAZY_NONE
when in an interrupt. This prevents interrupt code from
accidentally inheriting an outer lazy state, and instead
does everything synchronously. Outer batched operations
are left deferred.
This looks like a good solution, but can you make paravirt_lazy_mode()
inline? It doesn't need to be a function call.
Yeah. I'm not quite sure why it became out of line.
J
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