Messages in this thread | | | Date | Wed, 8 Dec 2021 10:55:20 +0800 | From | kernel test robot <> | Subject | [intel-tdx:guest 2/4] arch/x86/kernel/tdx-tests.c:85: Error: bad register name `%rax' |
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tree: https://github.com/intel/tdx.git guest head: 99ee592fd433c9c999684d873636c3764019dd08 commit: 857f6deb3a90f4d3a0ad94433929d017f31e2efd [2/4] x86/tdx-tests: Add a port of a kvm unit test config: i386-buildonly-randconfig-r006-20211207 (https://download.01.org/0day-ci/archive/20211208/202112081039.hxR5noCJ-lkp@intel.com/config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/intel/tdx/commit/857f6deb3a90f4d3a0ad94433929d017f31e2efd git remote add intel-tdx https://github.com/intel/tdx.git git fetch --no-tags intel-tdx guest git checkout 857f6deb3a90f4d3a0ad94433929d017f31e2efd # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
arch/x86/kernel/tdx-tests.c:66:12: warning: no previous prototype for 'kvm_unit_test_debug_init' [-Wmissing-prototypes] 66 | int __init kvm_unit_test_debug_init(void) | ^~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/kernel/tdx-tests.c: Assembler messages: >> arch/x86/kernel/tdx-tests.c:85: Error: bad register name `%rax' arch/x86/kernel/tdx-tests.c:86: Error: bad register name `%rax' arch/x86/kernel/tdx-tests.c:87: Error: bad register name `%rax' arch/x86/kernel/tdx-tests.c:88: Error: bad register name `%rax' arch/x86/kernel/tdx-tests.c:89: Error: bad register name `%rax' >> arch/x86/kernel/tdx-tests.c:90: Error: bad register name `%rip)' arch/x86/kernel/tdx-tests.c:111: Error: bad register name `%rax' arch/x86/kernel/tdx-tests.c:112: Error: bad register name `%rax' arch/x86/kernel/tdx-tests.c:113: Error: bad register name `%rax' arch/x86/kernel/tdx-tests.c:114: Error: bad register name `%rax' arch/x86/kernel/tdx-tests.c:115: Error: bad register name `%rax' arch/x86/kernel/tdx-tests.c:116: Error: bad register name `%rip)' arch/x86/kernel/tdx-tests.c:118: Error: bad register name `%rax' arch/x86/kernel/tdx-tests.c:133: Error: bad register name `%rax' arch/x86/kernel/tdx-tests.c:134: Error: bad register name `%rax' arch/x86/kernel/tdx-tests.c:135: Error: bad register name `%rax' arch/x86/kernel/tdx-tests.c:136: Error: bad register name `%rax' arch/x86/kernel/tdx-tests.c:137: Error: bad register name `%rax' arch/x86/kernel/tdx-tests.c:138: Error: bad register name `%rip)'
vim +85 arch/x86/kernel/tdx-tests.c
65 66 int __init kvm_unit_test_debug_init(void) 67 { 68 unsigned long start; 69 70 register_die_notifier(&kvm_unit_test_debug_notifier); 71 72 /* 73 * cpuid and rdmsr (among others) trigger VM exits and are then 74 * emulated. Test that single stepping works on emulated instructions. 75 * 76 * With TDX, there are 2 possibilities: instruction is either emulated 77 * by the TDX module or the #VE handler. In the former case, it's the 78 * job of the TDX module to raise #DB. 79 */ 80 n = 0; 81 82 set_debugreg(0, 6); 83 /* First, test #VE emulated instructions: CPUID 0x5 and RDMSR 0x8b */ 84 asm volatile( > 85 "pushf\n\t" 86 "pop %%rax\n\t" 87 "and $~(1<<8),%%rax\n\t" 88 "push %%rax\n\t" 89 "or $(1<<8),%%rax\n\t" > 90 "push %%rax\n\t"
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