Re: [PATCH 5/8] x86: remove dependencies on CONFIG_M... CPU options
"Arnd Bergmann" <[email protected]>
| Newsgroups | gmane.linux.uml.devel,gmane.linux.kernel |
|---|---|
| Message-ID | <[email protected]> |
On Fri, May 22, 2026, at 17:46, Juergen Gross wrote:
> On 22.05.26 16:19, Arnd Bergmann wrote:
>>
>> --- a/arch/x86/xen/Kconfig
>> +++ b/arch/x86/xen/Kconfig
>> @@ -10,8 +10,7 @@ config XEN
>> select X86_HV_CALLBACK_VECTOR
>> select HIBERNATE_CALLBACKS
>> depends on X86_64 || (X86_32 && X86_PAE)
>> - depends on X86_64 || (X86_GENERIC || MPENTIUM4 || MATOM)
>> - depends on X86_LOCAL_APIC && X86_TSC
>> + depends on X86_LOCAL_APIC
>
> This is problematic. See commit 93cd05976498.
>
> Maybe use "depends on X86_LOCAL_APIC && X86_L1_CACHE_SHIFT >= 6" instead?
After patch 6/8, this is always true, so I suppose it would
if that came first, right?
On a related note, are there still remaining Xen users on new
32-bit guest kernels? I understand that one could still run
modern kernels on 32-bit Xen-4.2 (EOL in 2015), and that 64-bit
Xen still supports older 32-bit guest operating systems for
compatibility, but I'm not sure if there is any reason to
legitimately run a 32-bit linux-7.x kernel on a 64-bit Xen
instead of running a better supported 64-bit guest kernel.
Arnd