|
From: | Avi Kivity |
Subject: | Re: [Qemu-devel] Re: [PATCHv2] qemu: target library, use it in msix |
Date: | Sun, 27 Sep 2009 16:26:33 +0200 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.1) Gecko/20090814 Fedora/3.0-2.6.b3.fc11 Lightning/1.0pre Thunderbird/3.0b3 |
On 09/27/2009 04:21 PM, Michael S. Tsirkin wrote:
How can the caller (except in your special case) know if it has a quantity that will fit in 32 bits?It's actually not unusual for devices to limit addressing to 32 bit, whatever the bus supports. For example, the value might come from a 32 bit pci bar, even on a 64 bit system this will get values 0 to 4G.
What if the caller is a device that doesn't intentionally cripple itself? -- Do not meddle in the internals of kernels, for they are subtle and quick to panic.
[Prev in Thread] | Current Thread | [Next in Thread] |