x86/kernel/sev.c

916 static int snp_set_vmsa(void *va, bool vmsa)
928 	if (vmsa)
965 static void snp_cleanup_vmsa(struct sev_es_save_area *vmsa)
969 	err = snp_set_vmsa(vmsa, false);
973 		free_page((unsigned long)vmsa);
978 	struct sev_es_save_area *cur_vmsa, *vmsa;
1022 	vmsa = (struct sev_es_save_area *)snp_alloc_vmsa_page(cpu);
1023 	if (!vmsa)
1031 	vmsa->cs.base		= sipi_vector << 12;
1032 	vmsa->cs.limit		= AP_INIT_CS_LIMIT;
1033 	vmsa->cs.attrib		= INIT_CS_ATTRIBS;
1034 	vmsa->cs.selector	= sipi_vector << 8;
1037 	vmsa->rip		= start_ip & 0xfff;
1040 	vmsa->ds.limit		= AP_INIT_DS_LIMIT;
1041 	vmsa->ds.attrib		= INIT_DS_ATTRIBS;
1042 	vmsa->es		= vmsa->ds;
1043 	vmsa->fs		= vmsa->ds;
1044 	vmsa->gs		= vmsa->ds;
1045 	vmsa->ss		= vmsa->ds;
1047 	vmsa->gdtr.limit	= AP_INIT_GDTR_LIMIT;
1048 	vmsa->ldtr.limit	= AP_INIT_LDTR_LIMIT;
1049 	vmsa->ldtr.attrib	= INIT_LDTR_ATTRIBS;
1050 	vmsa->idtr.limit	= AP_INIT_IDTR_LIMIT;
1051 	vmsa->tr.limit		= AP_INIT_TR_LIMIT;
1052 	vmsa->tr.attrib		= INIT_TR_ATTRIBS;
1054 	vmsa->cr4		= cr4;
1055 	vmsa->cr0		= AP_INIT_CR0_DEFAULT;
1056 	vmsa->dr7		= DR7_RESET_VALUE;
1057 	vmsa->dr6		= AP_INIT_DR6_DEFAULT;
1058 	vmsa->rflags		= AP_INIT_RFLAGS_DEFAULT;
1059 	vmsa->g_pat		= AP_INIT_GPAT_DEFAULT;
1060 	vmsa->xcr0		= AP_INIT_XCR0_DEFAULT;
1061 	vmsa->mxcsr		= AP_INIT_MXCSR_DEFAULT;
1062 	vmsa->x87_ftw		= AP_INIT_X87_FTW_DEFAULT;
1063 	vmsa->x87_fcw		= AP_INIT_X87_FCW_DEFAULT;
1066 	vmsa->efer		= EFER_SVME;
1073 	vmsa->vmpl		= 0;
1074 	vmsa->sev_features	= sev_status >> 2;
1077 	ret = snp_set_vmsa(vmsa, true);
1080 		free_page((unsigned long)vmsa);
1091 	ghcb_set_rax(ghcb, vmsa->sev_features);
1094 	ghcb_set_sw_exit_info_2(ghcb, __pa(vmsa));
1111 		snp_cleanup_vmsa(vmsa);
1112 		vmsa = NULL;
1120 	per_cpu(sev_vmsa, cpu) = vmsa;