1 // SPDX-License-Identifier: GPL-2.0 2 #include <asm/uv.h> 3 #include <asm/facility.h> 4 #include <asm/sections.h> 5 6 int __bootdata_preserved(prot_virt_guest); 7 8 void uv_query_info(void) 9 { 10 struct uv_cb_qui uvcb = { 11 .header.cmd = UVC_CMD_QUI, 12 .header.len = sizeof(uvcb) 13 }; 14 15 if (!test_facility(158)) 16 return; 17 18 /* rc==0x100 means that there is additional data we do not process */ 19 if (uv_call(0, (uint64_t)&uvcb) && uvcb.header.rc != 0x100) 20 return; 21 22 if (test_bit_inv(BIT_UVC_CMD_SET_SHARED_ACCESS, (unsigned long *)uvcb.inst_calls_list) && 23 test_bit_inv(BIT_UVC_CMD_REMOVE_SHARED_ACCESS, (unsigned long *)uvcb.inst_calls_list)) 24 prot_virt_guest = 1; 25 } 26