On Wed Feb 11, 2026 at 5:06 PM CET, Jan Beulich wrote: > 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
You mean having the option disappear when any explicit vendor is enabled? I guess we could. It wouldn't be very obvious to the user this can be toggled, but now again, if they are unticking vendors they would end up noticing. Cheers, Alejandro
