| Date | Thu, 10 Apr 2025 01:53:46 -0700 | | From | Christoph Hellwig <> | | Subject | Re: [PATCH v4 04/19] x86/cea: Export per CPU array 'cea_exception_stacks' for KVM to use |
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On Fri, Mar 28, 2025 at 10:11:50AM -0700, Xin Li (Intel) wrote: > The per CPU array 'cea_exception_stacks' points to per CPU stacks > +/* > + * FRED introduced new fields in the host-state area of the VMCS for > + * stack levels 1->3 (HOST_IA32_FRED_RSP[123]), each respectively > + * corresponding to per CPU stacks for #DB, NMI and #DF. KVM must > + * populate these each time a vCPU is loaded onto a CPU. > + */ > +EXPORT_PER_CPU_SYMBOL(cea_exception_stacks);
Exporting data vs accessors for it is usually a bad idea. Doing a non-_GPl for such a very low level data struture is even worse.
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