Re: [PATCH v9 06/22] x86/cea: Export __this_cpu_ist_top_va() to KVM

[Dave Hansen]

On 10/26/25 13:18, Xin Li (Intel) wrote:
> Export __this_cpu_ist_top_va() to allow KVM to retrieve the per-CPU
> exception stack top.
> 
> 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 exception stacks for #DB, NMI and #DF.  KVM must populate these
> fields each time a vCPU is loaded onto a CPU.

Acked-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>