Re: [PATCH v10 57/59] hw/xen: Support MSI mapping to PIRQ

2023-02-14 Thread Paul Durrant
On 01/02/2023 14:31, David Woodhouse wrote: From: David Woodhouse The way that Xen handles MSI PIRQs is kind of awful. There is a special MSI message which targets a PIRQ. The vector in the low bits of data must be zero. The low 8 bits of the PIRQ# are in the destination ID field, the extended

[PATCH v10 57/59] hw/xen: Support MSI mapping to PIRQ

2023-02-01 Thread David Woodhouse
From: David Woodhouse The way that Xen handles MSI PIRQs is kind of awful. There is a special MSI message which targets a PIRQ. The vector in the low bits of data must be zero. The low 8 bits of the PIRQ# are in the destination ID field, the extended destination ID field is unused, and instead t