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| From: | Paolo Bonzini |
| Subject: | Re: [RFC PATCH v2 12/22] hw/xen: Add xen_overlay device for emulating shared xenheap pages |
| Date: | Mon, 12 Dec 2022 18:14:45 +0100 |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.5.0 |
On 12/9/22 10:56, David Woodhouse wrote:
Expecting some heckling at the use of xen_overlay_singleton. What is the best way to do that? Using qemu_find_recursive() every time seemed a bit wrong. But I suppose mapping it into the*guest* isn't a fast path, and if the actual grant table code is allowed to just stash the pointer it gets from xen_overlay_page_ptr() for later use then that isn't a fast path for device I/O either.
Nah, it's fine. However I'll reply to patch 2 as to how to handle Xen vs. KVM mode.
Paolo
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