* [xinli-intel-fred-public:intel-lkp 15/34] arch/x86/kvm/vmx/vmx.c:1515:81: error: 'DB' undeclared; did you mean 'DS'?
@ 2024-08-19 16:09 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2024-08-19 16:09 UTC (permalink / raw)
To: Xin3 Li; +Cc: oe-kbuild-all
tree: https://github.com/xinli-intel/linux-fred-public.git intel-lkp
head: ae58d028f319b7fde38a21d188e30e46471e1e3c
commit: 4584c853845ae8950025fa5e40335060a2eec7a3 [15/34] KVM: VMX: Initialize VMCS FRED fields
config: i386-allmodconfig (https://download.01.org/0day-ci/archive/20240820/202408200026.ytNs3H4F-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240820/202408200026.ytNs3H4F-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202408200026.ytNs3H4F-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from arch/x86/include/asm/pgtable_32_areas.h:4,
from arch/x86/include/asm/pgtable_areas.h:5,
from arch/x86/include/asm/highmem.h:29,
from include/linux/highmem-internal.h:25,
from include/linux/highmem.h:14,
from arch/x86/kvm/vmx/vmx.c:17:
arch/x86/kvm/vmx/vmx.c: In function 'vmx_vcpu_load_vmcs':
>> arch/x86/include/asm/cpu_entry_area.h:148:9: error: implicit declaration of function 'CEA_ESTACK_TOP'; did you mean 'STACK_TOP'? [-Werror=implicit-function-declaration]
148 | CEA_ESTACK_TOP(__this_cpu_read(cea_exception_stacks), name)
| ^~~~~~~~~~~~~~
arch/x86/kvm/vmx/vmx.c:1515:59: note: in expansion of macro '__this_cpu_ist_top_va'
1515 | vmcs_write64(HOST_IA32_FRED_RSP1, __this_cpu_ist_top_va(DB));
| ^~~~~~~~~~~~~~~~~~~~~
>> arch/x86/kvm/vmx/vmx.c:1515:81: error: 'DB' undeclared (first use in this function); did you mean 'DS'?
1515 | vmcs_write64(HOST_IA32_FRED_RSP1, __this_cpu_ist_top_va(DB));
| ^~
arch/x86/include/asm/cpu_entry_area.h:148:63: note: in definition of macro '__this_cpu_ist_top_va'
148 | CEA_ESTACK_TOP(__this_cpu_read(cea_exception_stacks), name)
| ^~~~
arch/x86/kvm/vmx/vmx.c:1515:81: note: each undeclared identifier is reported only once for each function it appears in
1515 | vmcs_write64(HOST_IA32_FRED_RSP1, __this_cpu_ist_top_va(DB));
| ^~
arch/x86/include/asm/cpu_entry_area.h:148:63: note: in definition of macro '__this_cpu_ist_top_va'
148 | CEA_ESTACK_TOP(__this_cpu_read(cea_exception_stacks), name)
| ^~~~
>> arch/x86/kvm/vmx/vmx.c:1516:81: error: 'NMI' undeclared (first use in this function)
1516 | vmcs_write64(HOST_IA32_FRED_RSP2, __this_cpu_ist_top_va(NMI));
| ^~~
arch/x86/include/asm/cpu_entry_area.h:148:63: note: in definition of macro '__this_cpu_ist_top_va'
148 | CEA_ESTACK_TOP(__this_cpu_read(cea_exception_stacks), name)
| ^~~~
>> arch/x86/kvm/vmx/vmx.c:1517:81: error: 'DF' undeclared (first use in this function); did you mean 'DS'?
1517 | vmcs_write64(HOST_IA32_FRED_RSP3, __this_cpu_ist_top_va(DF));
| ^~
arch/x86/include/asm/cpu_entry_area.h:148:63: note: in definition of macro '__this_cpu_ist_top_va'
148 | CEA_ESTACK_TOP(__this_cpu_read(cea_exception_stacks), name)
| ^~~~
cc1: some warnings being treated as errors
vim +1515 arch/x86/kvm/vmx/vmx.c
1449
1450 void vmx_vcpu_load_vmcs(struct kvm_vcpu *vcpu, int cpu,
1451 struct loaded_vmcs *buddy)
1452 {
1453 struct vcpu_vmx *vmx = to_vmx(vcpu);
1454 bool already_loaded = vmx->loaded_vmcs->cpu == cpu;
1455 struct vmcs *prev;
1456
1457 if (!already_loaded) {
1458 loaded_vmcs_clear(vmx->loaded_vmcs);
1459 local_irq_disable();
1460
1461 /*
1462 * Ensure loaded_vmcs->cpu is read before adding loaded_vmcs to
1463 * this cpu's percpu list, otherwise it may not yet be deleted
1464 * from its previous cpu's percpu list. Pairs with the
1465 * smb_wmb() in __loaded_vmcs_clear().
1466 */
1467 smp_rmb();
1468
1469 list_add(&vmx->loaded_vmcs->loaded_vmcss_on_cpu_link,
1470 &per_cpu(loaded_vmcss_on_cpu, cpu));
1471 local_irq_enable();
1472 }
1473
1474 prev = per_cpu(current_vmcs, cpu);
1475 if (prev != vmx->loaded_vmcs->vmcs) {
1476 per_cpu(current_vmcs, cpu) = vmx->loaded_vmcs->vmcs;
1477 vmcs_load(vmx->loaded_vmcs->vmcs);
1478
1479 /*
1480 * No indirect branch prediction barrier needed when switching
1481 * the active VMCS within a vCPU, unless IBRS is advertised to
1482 * the vCPU. To minimize the number of IBPBs executed, KVM
1483 * performs IBPB on nested VM-Exit (a single nested transition
1484 * may switch the active VMCS multiple times).
1485 */
1486 if (!buddy || WARN_ON_ONCE(buddy->vmcs != prev))
1487 indirect_branch_prediction_barrier();
1488 }
1489
1490 if (!already_loaded) {
1491 void *gdt = get_current_gdt_ro();
1492
1493 /*
1494 * Flush all EPTP/VPID contexts, the new pCPU may have stale
1495 * TLB entries from its previous association with the vCPU.
1496 */
1497 kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
1498
1499 /*
1500 * Linux uses per-cpu TSS and GDT, so set these when switching
1501 * processors. See 22.2.4.
1502 */
1503 vmcs_writel(HOST_TR_BASE,
1504 (unsigned long)&get_cpu_entry_area(cpu)->tss.x86_tss);
1505 vmcs_writel(HOST_GDTR_BASE, (unsigned long)gdt); /* 22.2.4 */
1506
1507 if (IS_ENABLED(CONFIG_IA32_EMULATION) || IS_ENABLED(CONFIG_X86_32)) {
1508 /* 22.2.3 */
1509 vmcs_writel(HOST_IA32_SYSENTER_ESP,
1510 (unsigned long)(cpu_entry_stack(cpu) + 1));
1511 }
1512
1513 /* Per-CPU FRED MSRs */
1514 if (kvm_cpu_cap_has(X86_FEATURE_FRED)) {
> 1515 vmcs_write64(HOST_IA32_FRED_RSP1, __this_cpu_ist_top_va(DB));
> 1516 vmcs_write64(HOST_IA32_FRED_RSP2, __this_cpu_ist_top_va(NMI));
> 1517 vmcs_write64(HOST_IA32_FRED_RSP3, __this_cpu_ist_top_va(DF));
1518 vmcs_write64(HOST_IA32_FRED_SSP1, 0);
1519 vmcs_write64(HOST_IA32_FRED_SSP2, 0);
1520 vmcs_write64(HOST_IA32_FRED_SSP3, 0);
1521 }
1522
1523 vmx->loaded_vmcs->cpu = cpu;
1524 }
1525 }
1526
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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