On Mon, Sep 08, 2025 at 11:37:03AM +0300, Mykola Kvach wrote: > > --- a/xen/common/emul/vuart/Kconfig > > +++ b/xen/common/emul/vuart/Kconfig > > @@ -3,4 +3,23 @@ config VUART_FRAMEWORK > > > > menu "UART Emulation" > > > > +config VUART_NS16X50 > > + bool "NS16550-compatible UART Emulator" if EXPERT > > + depends on X86 && HVM > > Currently VUART_NS16X50 depends on X86, so the code is only > usable on x86. Are there any plans to support this vUART on non-x86 > architectures (e.g. ARM, where some UARTs are also ns16550-compatible)?
The plan is to add MMIO-based implementation for x86 first. > > If not, wouldn’t it be more appropriate to move the ns16x50-specific > implementation into x86-specific directories instead of common? There was discussion on that and the agreement is to move all vUARTs into common/emul/vuart and start using common/emul as a placeholder for common emulation code, including vPCI.
