Re: [Xen-devel] [PATCH v3 2/4] xen/arm: io: Distinguish unhandled IO from aborted one

2018-02-02 Thread Julien Grall
On 02/02/18 14:34, Andre Przywara wrote: Hi, Hi, On 02/02/18 10:14, Julien Grall wrote: Currently, Xen is considering that an IO could either be handled or unhandled. When unhandled, the stage-2 abort function will try another way to resolve the abort. However, the MMIO emulation may retu

Re: [Xen-devel] [PATCH v3 2/4] xen/arm: io: Distinguish unhandled IO from aborted one

2018-02-02 Thread Andre Przywara
Hi, On 02/02/18 10:14, Julien Grall wrote: > Currently, Xen is considering that an IO could either be handled or > unhandled. When unhandled, the stage-2 abort function will try another > way to resolve the abort. > > However, the MMIO emulation may return unhandled when the address > belongs to

[Xen-devel] [PATCH v3 2/4] xen/arm: io: Distinguish unhandled IO from aborted one

2018-02-02 Thread Julien Grall
Currently, Xen is considering that an IO could either be handled or unhandled. When unhandled, the stage-2 abort function will try another way to resolve the abort. However, the MMIO emulation may return unhandled when the address belongs to an emulated range but was not correct. In that case, Xen