262 static int snp_set_vmsa(void *va, bool vmsa)  in snp_set_vmsa()  argument
267 	 * Running at VMPL0 allows the kernel to change the VMSA bit for a page  in snp_set_vmsa()
274 	if (vmsa)  in snp_set_vmsa()
280 static void snp_cleanup_vmsa(struct sev_es_save_area *vmsa)  in snp_cleanup_vmsa()  argument
284 	err = snp_set_vmsa(vmsa, false);  in snp_cleanup_vmsa()
286 		pr_err("clear VMSA page failed (%u), leaking page\n", err);  in snp_cleanup_vmsa()
288 		free_page((unsigned long)vmsa);  in snp_cleanup_vmsa()
293 	struct sev_es_save_area *vmsa = (struct sev_es_save_area *)  in hv_snp_boot_ap()  local
301 	if (!vmsa)  in hv_snp_boot_ap()
306 	vmsa->gdtr.base = gdtr.address;  in hv_snp_boot_ap()
307 	vmsa->gdtr.limit = gdtr.size;  in hv_snp_boot_ap()
309 	asm volatile("movl %%es, %%eax;" : "=a" (vmsa->es.selector));  in hv_snp_boot_ap()
310 	hv_populate_vmcb_seg(vmsa->es, vmsa->gdtr.base);  in hv_snp_boot_ap()
312 	asm volatile("movl %%cs, %%eax;" : "=a" (vmsa->cs.selector));  in hv_snp_boot_ap()
313 	hv_populate_vmcb_seg(vmsa->cs, vmsa->gdtr.base);  in hv_snp_boot_ap()
315 	asm volatile("movl %%ss, %%eax;" : "=a" (vmsa->ss.selector));  in hv_snp_boot_ap()
316 	hv_populate_vmcb_seg(vmsa->ss, vmsa->gdtr.base);  in hv_snp_boot_ap()
318 	asm volatile("movl %%ds, %%eax;" : "=a" (vmsa->ds.selector));  in hv_snp_boot_ap()
319 	hv_populate_vmcb_seg(vmsa->ds, vmsa->gdtr.base);  in hv_snp_boot_ap()
321 	vmsa->efer = native_read_msr(MSR_EFER);  in hv_snp_boot_ap()
323 	vmsa->cr4 = native_read_cr4();  in hv_snp_boot_ap()
324 	vmsa->cr3 = __native_read_cr3();  in hv_snp_boot_ap()
325 	vmsa->cr0 = native_read_cr0();  in hv_snp_boot_ap()
327 	vmsa->xcr0 = 1;  in hv_snp_boot_ap()
328 	vmsa->g_pat = HV_AP_INIT_GPAT_DEFAULT;  in hv_snp_boot_ap()
329 	vmsa->rip = (u64)secondary_startup_64_no_verify;  in hv_snp_boot_ap()
330 	vmsa->rsp = (u64)&ap_start_stack[PAGE_SIZE];  in hv_snp_boot_ap()
333 	 * Set the SNP-specific fields for this VMSA:  in hv_snp_boot_ap()
337 	vmsa->vmpl = 0;  in hv_snp_boot_ap()
338 	vmsa->sev_features = sev_status >> 2;  in hv_snp_boot_ap()
340 	ret = snp_set_vmsa(vmsa, true);  in hv_snp_boot_ap()
342 		pr_err("RMPADJUST(%llx) failed: %llx\n", (u64)vmsa, ret);  in hv_snp_boot_ap()
343 		free_page((u64)vmsa);  in hv_snp_boot_ap()
353 	*(u64 *)&start_vp_input->vp_context = __pa(vmsa) | 1;  in hv_snp_boot_ap()
364 		snp_cleanup_vmsa(vmsa);  in hv_snp_boot_ap()
365 		vmsa = NULL;  in hv_snp_boot_ap()
369 	/* Free up any previous VMSA page */  in hv_snp_boot_ap()
373 	/* Record the current VMSA page */  in hv_snp_boot_ap()
374 	per_cpu(hv_sev_vmsa, cpu) = vmsa;  in hv_snp_boot_ap()