On 06.02.2026 17:15, Alejandro Vallejo wrote: > --- a/xen/arch/x86/Kconfig.cpu > +++ b/xen/arch/x86/Kconfig.cpu > @@ -19,4 +19,47 @@ config INTEL > May be turned off in builds targetting other vendors. Otherwise, > must be enabled for Xen to work suitably on Intel platforms. > > +config HYGON > + bool "Support Hygon CPUs" > + select AMD > + default y > + help > + Detection, tunings and quirks for Hygon platforms. > + > + May be turned off in builds targetting other vendors. Otherwise, > + must be enabled for Xen to work suitably on Hygon platforms. > + > + > +config CENTAUR > + bool "Support Centaur CPUs" > + select INTEL > + default y > + help > + Detection, tunings and quirks for Centaur platforms. > + > + May be turned off in builds targetting other vendors. Otherwise, > + must be enabled for Xen to work suitably on Centaur platforms. > + > +config SHANGHAI > + bool "Support Shanghai CPUs" > + select INTEL > + default y > + help > + Detection, tunings and quirks for Shanghai platforms. > + > + May be turned off in builds targetting other vendors. Otherwise, > + must be enabled for Xen to work suitably on Shanghai platforms. > + > +config UNKNOWN_CPU_VENDOR > + bool "Support unknown CPU vendors" > + default y > + help > + This option prevents a panic on boot when the host CPU vendor isn't > + supported by going into a legacy compatibility mode and not applying > + any relevant tunings or quirks. > + > + Not selecting this options while selecting multiple vendors doesn't > have > + any major effect on code size, but selecting a single vendor with this > + option cleared produces a much smaller build.
Shouldn't this option's prompt be suppressed when all other vendors were selected off? Else the degenerate case can result that I mentioned in reply to patch 03. Jan
