x86/hyperv/ivm.c

263 static int snp_set_vmsa(void *va, bool vmsa)
275 	if (vmsa)
281 static void snp_cleanup_vmsa(struct sev_es_save_area *vmsa)
285 	err = snp_set_vmsa(vmsa, false);
289 		free_page((unsigned long)vmsa);
294 	struct sev_es_save_area *vmsa = (struct sev_es_save_area *)
302 	if (!vmsa)
307 	vmsa->gdtr.base = gdtr.address;
308 	vmsa->gdtr.limit = gdtr.size;
310 	asm volatile("movl %%es, %%eax;" : "=a" (vmsa->es.selector));
311 	hv_populate_vmcb_seg(vmsa->es, vmsa->gdtr.base);
313 	asm volatile("movl %%cs, %%eax;" : "=a" (vmsa->cs.selector));
314 	hv_populate_vmcb_seg(vmsa->cs, vmsa->gdtr.base);
316 	asm volatile("movl %%ss, %%eax;" : "=a" (vmsa->ss.selector));
317 	hv_populate_vmcb_seg(vmsa->ss, vmsa->gdtr.base);
319 	asm volatile("movl %%ds, %%eax;" : "=a" (vmsa->ds.selector));
320 	hv_populate_vmcb_seg(vmsa->ds, vmsa->gdtr.base);
322 	vmsa->efer = native_read_msr(MSR_EFER);
324 	asm volatile("movq %%cr4, %%rax;" : "=a" (vmsa->cr4));
325 	asm volatile("movq %%cr3, %%rax;" : "=a" (vmsa->cr3));
326 	asm volatile("movq %%cr0, %%rax;" : "=a" (vmsa->cr0));
328 	vmsa->xcr0 = 1;
329 	vmsa->g_pat = HV_AP_INIT_GPAT_DEFAULT;
330 	vmsa->rip = (u64)secondary_startup_64_no_verify;
331 	vmsa->rsp = (u64)&ap_start_stack[PAGE_SIZE];
338 	vmsa->vmpl = 0;
339 	vmsa->sev_features = sev_status >> 2;
341 	ret = snp_set_vmsa(vmsa, true);
343 		pr_err("RMPADJUST(%llx) failed: %llx\n", (u64)vmsa, ret);
344 		free_page((u64)vmsa);
354 	*(u64 *)&start_vp_input->vp_context = __pa(vmsa) | 1;
365 		snp_cleanup_vmsa(vmsa);
366 		vmsa = NULL;
375 	per_cpu(hv_sev_vmsa, cpu) = vmsa;