[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] hvm iret [also xen interrupt handling deltails]
thanks for the response. i understand the concept of events and xen event injection process. but what i'd like to know is what happens when a guest(hvm) OS krnl executes iret? does it trap to xen? would it _always_ trap to xen in paravirtualized environment ( i.e. no hardware assisted virtualization)? also, i understand that when a physical interrupt comes, xen sets bits in some event bitmask to inject events (or virtual interrupts) into guest VMs, but when does xen send EOI to the IOAPIC? does it send after all the guest VMs have executed their ISRs or does it send immediately upon receiving a physical interrupt? thanks again. On 10/21/07, Cui, Dexuan <dexuan.cui@xxxxxxxxx> wrote:
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