On Thu, 17 Mar 2022, Ayan Kumar Halder wrote: > When the data abort is caused due to cache maintenance for an address, > there are three scenarios:- > > 1. Address belonging to a non emulated region - For this, Xen should > set the corresponding bit in the translation table entry to valid and > return to the guest to retry the instruction. This can happen sometimes > as Xen need to set the translation table entry to invalid. (for eg > 'Break-Before-Make' sequence). Xen returns to the guest to retry the > instruction. > > 2. Address belongs to an emulated region - Xen should ignore the > instruction (ie increment the PC) and return to the guest. > > 3. Address is invalid - Xen should forward the data abort to the guest. > > Signed-off-by: Ayan Kumar Halder <ayank...@xilinx.com>
Tested-by: Stefano Stabellini <sstabell...@kernel.org> Reviewed-by: Stefano Stabellini <sstabell...@kernel.org>
