|
From: | Avi Kivity |
Subject: | Re: [Qemu-devel] [RFC] Memory API |
Date: | Fri, 20 May 2011 11:58:21 +0300 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110428 Fedora/3.1.10-1.fc14 Thunderbird/3.1.10 |
On 05/19/2011 07:49 PM, Jan Kiszka wrote:
> > If you have overlapping BARs, the PCI bus will always send the request > to a single device based on something that's implementation specific. > This works because each PCI device advertises the BAR locations and > sizes in it's config space. That's not a use case for priorities at all. Priorities are useful for PAM and SMRAM-like scenarios.
Correct. Priorities are also useful to decide if BARs hide RAM or vice-versa (determined by the PCI container's priority vs. the RAM container priorities, not individual BARs' priorities).
-- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.
[Prev in Thread] | Current Thread | [Next in Thread] |