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Re: [XEN PATCH v1 1/2] x86/intel: optional build of intel.c
- To: Jan Beulich <jbeulich@xxxxxxxx>
- From: Sergiy Kibrik <sergiy_kibrik@xxxxxxxx>
- Date: Thu, 15 Aug 2024 13:58:27 +0300
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Thu, 15 Aug 2024 10:58:46 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
13.08.24 10:40, Jan Beulich:
I'm okay-ish with the simple stubbing out for update_mcu_opt_ctrl(), but
set_in_mcu_opt_ctrl() imo requires more work. The call sites in spec_ctrl.c
shouldn't give the wrong impression of having some effect. Imo in
init_speculation_mitigations() an #endif wants to move down, while all of
gds_calculations() wants to be compiled out. And that likely extends to
further Intel-only functions there (with an early bail-out keyed to
boot_cpu_data.x86_vendor != X86_VENDOR_INTEL). Which overall likely means
there wants to be another separate patch dealing with that. (And then
maybe a counterpart one for AMD.)
Thanks for a suggestion, indeed there are many routines there that can
be put under CONFIG_{AMD,INTEL}.
-Sergiy
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