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Re: [Qemu-devel] [PATCH rebased for-1.8] i386: pc: align gpa<->hpa on 1G


From: Paolo Bonzini
Subject: Re: [Qemu-devel] [PATCH rebased for-1.8] i386: pc: align gpa<->hpa on 1GB boundary (v6)
Date: Wed, 11 Dec 2013 16:41:08 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130923 Thunderbird/17.0.9

Il 11/12/2013 16:39, Michael S. Tsirkin ha scritto:
> > 2GB low memory for q35 is a bit wasteful,
> > but we have some time to fix that before release.
> 
> How would you fix that?

Just use 1GB, coupled with reducing the default MMCONFIG size to 128
buses.  That's already ~40 PCIe devices if you count upstream/downstream
ports in addition to the actual device, and you can also use PCIe-to-PCI
bridges if you need more room.

Paolo



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