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From: | Avi Kivity |
Subject: | Re: [Qemu-devel] [RFC v5 86/86] 440fx: fix PAM, PCI holes |
Date: | Mon, 25 Jul 2011 17:05:25 +0300 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.18) Gecko/20110621 Fedora/3.1.11-1.fc15 Thunderbird/3.1.11 |
On 07/25/2011 04:47 PM, Anthony Liguori wrote:
On 07/25/2011 08:38 AM, Avi Kivity wrote:On 07/25/2011 04:35 PM, Gleb Natapov wrote:> > That's the ISA TOM (15MB hole and friends). > Correct. What about: 3.2.19. DRB[0:7] DRAM ROW BOUNDARY REGISTERS from 440fx spec?Maybe. But we can't use that, since it ignores address line 31. (440fx supports only 1GB RAM, and we're ignoring that)What are we trying to do?Can't we just register highest RAM address under 4G to 4G as PCI memory and call it a day?Do we really need a guest visible register to do this?
Why not use 3.5GB and call it a day? It's safer for memory hotplug, if we ever get it.
The guest will never put a PCI BAR below that anyway. -- error compiling committee.c: too many arguments to function
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