On Mon, Aug 25, 2025 at 11:55:44AM +0530, Upadhyay, Neeraj wrote:
> Ok. Below is the updated description:
>
> Virtual GIF (VGIF) providing masking capability for when virtual interrupts
> (virtual maskable interrupts, virtual NMIs) can be taken by the guest vCPU.
> Secure AVIC hardware reads VGIF state from the vCPU's VMSA. So, set VGIF for
> secondary CPUs (the configuration for boot CPU is done by the hypervisor),
> to unmask delivery of virtual interrupts to the vCPU.
Yap.
> I also don't see an explicit mention. I will check on documenting it in the
> APM. However, there are references to virtual interrupts (V_NMI, V_INTR)
> (which requires VGIF support)
Oh, I don't doubt that SAVIC requires VGIF - I just spotted a documentation
hole here so let's start the process of documenting this internally.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
