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List:       kvm
Subject:    Re: [PATCH 2/3] device-assignment: Always use slow mapping for PCI
From:       Chris Wright <chrisw () redhat ! com>
Date:       2010-07-31 16:55:35
Message-ID: 20100731165535.GB28601 () x200 ! localdomain
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* Alex Williamson (alex.williamson@redhat.com) wrote:
> KVM doesn't support read-only mappings for MMIO space.  Performance isn't
> an issue for the option ROM mapping, so always use slow mapping.  kvm.git
> cset b4f8c249 will make kvm hang with a "Bad address" fault without this.
> We can also then drop the extraneous mprotects since the guest has no way
> to write to these regions.

Acked-by: Chris Wright <chrisw@redhat.com>
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