1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0 2*4882a593Smuzhiyun #include <asm/uv.h> 3*4882a593Smuzhiyun #include <asm/facility.h> 4*4882a593Smuzhiyun #include <asm/sections.h> 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun /* will be used in arch/s390/kernel/uv.c */ 7*4882a593Smuzhiyun #ifdef CONFIG_PROTECTED_VIRTUALIZATION_GUEST 8*4882a593Smuzhiyun int __bootdata_preserved(prot_virt_guest); 9*4882a593Smuzhiyun #endif 10*4882a593Smuzhiyun #if IS_ENABLED(CONFIG_KVM) 11*4882a593Smuzhiyun int __bootdata_preserved(prot_virt_host); 12*4882a593Smuzhiyun #endif 13*4882a593Smuzhiyun struct uv_info __bootdata_preserved(uv_info); 14*4882a593Smuzhiyun uv_query_info(void)15*4882a593Smuzhiyunvoid uv_query_info(void) 16*4882a593Smuzhiyun { 17*4882a593Smuzhiyun struct uv_cb_qui uvcb = { 18*4882a593Smuzhiyun .header.cmd = UVC_CMD_QUI, 19*4882a593Smuzhiyun .header.len = sizeof(uvcb) 20*4882a593Smuzhiyun }; 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun if (!test_facility(158)) 23*4882a593Smuzhiyun return; 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun /* rc==0x100 means that there is additional data we do not process */ 26*4882a593Smuzhiyun if (uv_call(0, (uint64_t)&uvcb) && uvcb.header.rc != 0x100) 27*4882a593Smuzhiyun return; 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun if (IS_ENABLED(CONFIG_KVM)) { 30*4882a593Smuzhiyun memcpy(uv_info.inst_calls_list, uvcb.inst_calls_list, sizeof(uv_info.inst_calls_list)); 31*4882a593Smuzhiyun uv_info.uv_base_stor_len = uvcb.uv_base_stor_len; 32*4882a593Smuzhiyun uv_info.guest_base_stor_len = uvcb.conf_base_phys_stor_len; 33*4882a593Smuzhiyun uv_info.guest_virt_base_stor_len = uvcb.conf_base_virt_stor_len; 34*4882a593Smuzhiyun uv_info.guest_virt_var_stor_len = uvcb.conf_virt_var_stor_len; 35*4882a593Smuzhiyun uv_info.guest_cpu_stor_len = uvcb.cpu_stor_len; 36*4882a593Smuzhiyun uv_info.max_sec_stor_addr = ALIGN(uvcb.max_guest_stor_addr, PAGE_SIZE); 37*4882a593Smuzhiyun uv_info.max_num_sec_conf = uvcb.max_num_sec_conf; 38*4882a593Smuzhiyun uv_info.max_guest_cpu_id = uvcb.max_guest_cpu_id; 39*4882a593Smuzhiyun uv_info.uv_feature_indications = uvcb.uv_feature_indications; 40*4882a593Smuzhiyun } 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun #ifdef CONFIG_PROTECTED_VIRTUALIZATION_GUEST 43*4882a593Smuzhiyun if (test_bit_inv(BIT_UVC_CMD_SET_SHARED_ACCESS, (unsigned long *)uvcb.inst_calls_list) && 44*4882a593Smuzhiyun test_bit_inv(BIT_UVC_CMD_REMOVE_SHARED_ACCESS, (unsigned long *)uvcb.inst_calls_list)) 45*4882a593Smuzhiyun prot_virt_guest = 1; 46*4882a593Smuzhiyun #endif 47*4882a593Smuzhiyun } 48