From: Hollis Blanchard <hollisb@xxxxxxxxxx> Date: Tue, 23 Sep 2008 11:07:31 -0500 > As far as I can see, you have a hypervisor privilege mode which allows > your guests to execute privileged instructions like WRPR without > trapping. Sure. > Without that hardware support (with only 2 privilege levels), you'd be > forced to run the guest kernel in user mode, trapping on every WRPR (for > example). That's what I mean by hardware helping you to avoid traps. Understood. Actually, we'll likely need to interpret instructions or rewrite some of them when executing privileged mode code, because, as stated, several 32-bit V8 Sparc instructions which were privileged became non-privileged instructions for 64-bit V9. -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
