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Re: [Qemu-devel] [PATCH, RESEND] kvm: Fix dirty tracking with large kern
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From: |
Jan Kiszka |
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Subject: |
Re: [Qemu-devel] [PATCH, RESEND] kvm: Fix dirty tracking with large kernel page size |
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Date: |
Wed, 04 Apr 2012 12:58:37 +0200 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
On 2012-04-04 03:12, David Gibson wrote:
>> Also, what's about coalesced MMIO? I see that the ring definition
>> depends on [TARGET_]PAGE_SIZE. What page size does the power kernel use
>> for it, and does it make a relevant difference for space?
>
> Hr, so the HV variant of Power KVM doesn't do coalesced mmio. The PR
> variant does, but I don't know enough about it to easily answer that.
> If there's a bug there, it hasn't bitten yet, so how about we fix that
> another day.
Not really a smart approach, specifically now that we are aware of a
potential problem here.
Jan
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