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| From: | Avi Kivity |
| Subject: | Re: [Qemu-devel] Physical address debugging |
| Date: | Wed, 31 Aug 2011 08:20:38 +0300 |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:6.0) Gecko/20110816 Thunderbird/6.0 |
On 08/30/2011 09:31 PM, Blue Swirl wrote:
>> >> Since KVM can handle MMIO, I think it should also be able to handle >> watchpoints. >> > > Not on RAM areas. But isn't it possible to unmap one page of RAM and replace that by MMIO page on KVM, is this because of the memory slots?
It is possible. Currently kvm won't execute code from mmio, but that's easy to fix. Of course, the kvm instruction emulator isn't 100% complete (or even close, when considering vector extensions).
Does your memory work help?
It does, you an add an overlay page and then remove it when done. -- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.
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