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Re: [RFC 01/10] x86: introduce AMD-V and Intel VT-x Kconfig options
- To: Xenia Ragiadakou <burzalodowa@xxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Mon, 13 Feb 2023 17:41:52 +0100
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Paul Durrant <paul@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
- Delivery-date: Mon, 13 Feb 2023 16:42:10 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 13.02.2023 17:30, Xenia Ragiadakou wrote:
> On 2/13/23 17:11, Jan Beulich wrote:
>> On 13.02.2023 15:57, Xenia Ragiadakou wrote:
>>> --- a/xen/arch/x86/cpu/Makefile
>>> +++ b/xen/arch/x86/cpu/Makefile
>>> @@ -10,4 +10,6 @@ obj-y += intel.o
>>> obj-y += intel_cacheinfo.o
>>> obj-y += mwait-idle.o
>>> obj-y += shanghai.o
>>> -obj-y += vpmu.o vpmu_amd.o vpmu_intel.o
>>> +obj-y += vpmu.o
>>> +obj-$(CONFIG_AMD_SVM) += vpmu_amd.o
>>> +obj-$(CONFIG_INTEL_VMX) += vpmu_intel.o
>>
>> This code was moved from hvm/ to cpu/ for the specific reason of also
>> being used by PV guests. (Sadly the comments at the top weren't
>> corrected at that time.)
>
> Hmm, the init functions are prefixed with svm/vmx.
> Does vpmu depend on svm/vmx support?
There are interactions, but I don't think there's a dependency. You
may want to ask Boris (whom I have now added to Cc).
Jan
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