Re: [PATCH v3 02/17] x86/apic: Initialize Secure AVIC APIC backing page

[Thomas Gleixner]

On Tue, Apr 01 2025 at 17:06, Neeraj Upadhyay wrote:
> +enum es_result savic_register_gpa(u64 gpa)
> +{
> +	struct ghcb_state state;
> +	struct es_em_ctxt ctxt;
> +	unsigned long flags;
> +	enum es_result res;
> +	struct ghcb *ghcb;
> +
> +	local_irq_save(flags);

        guard(irqsave)();

> +	ghcb = __sev_get_ghcb(&state);
> +
> +	vc_ghcb_invalidate(ghcb);
> +
> +	/* Register GPA for the local CPU */
> +	ghcb_set_rax(ghcb, -1ULL);
> +	ghcb_set_rbx(ghcb, gpa);
> +	res = sev_es_ghcb_hv_call(ghcb, &ctxt, SVM_VMGEXIT_SECURE_AVIC,
> +			SVM_VMGEXIT_SECURE_AVIC_REGISTER_GPA, 0);

https://www.kernel.org/doc/html/latest/process/maintainer-tip.html#line-breaks