On 08/25/2009 07:13 AM, Marcelo Tosatti wrote:
Commit b8bcfe997e4 made paravirt pte updates synchronous in interrupt context. Unfortunately the KVM pv mmu code caches the lazy/nonlazy mode internally, so a pte update from interrupt context during a lazy mmu operation can be batched while it should be performed synchronously. https://bugzilla.redhat.com/show_bug.cgi?id=518022 Drop the internal mode variable and use paravirt_get_lazy_mode(), which returns the correct state.
It looks good and I'd like to get it into 2.6.31. Do we have any reports it fixes the problem?
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