tree: https://git.kernel.org/pub/scm/virt/kvm/kvm.git queue head: 0e67722dd743e8218b4fc7924a1ab4ffda781517 commit: 8de182e8f597f4ec81a6fca865fb709c0753ca53 [20/31] KVM: nVMX: expose VPID capability to L1 config: i386-randconfig-x006-201539 (attached as .config) reproduce: git checkout 8de182e8f597f4ec81a6fca865fb709c0753ca53 # save the attached .config to linux build tree make ARCH=i386 All warnings (new ones prefixed by >>): arch/x86/kvm/vmx.c: In function 'nested_vmx_setup_ctls_msrs': >> arch/x86/kvm/vmx.c:2502:78: warning: left shift count >= width of type [-Wshift-count-overflow] vmx->nested.nested_vmx_ept_vpid_caps |= (unsigned long)vmx_capability.vpid << 32; ^ vim +2502 arch/x86/kvm/vmx.c 2486 SECONDARY_EXEC_XSAVES; 2487 2488 if (enable_ept | enable_vpid) { 2489 /* nested EPT: emulate EPT also to L1 */ 2490 vmx->nested.nested_vmx_secondary_ctls_high |= 2491 SECONDARY_EXEC_ENABLE_EPT; 2492 vmx->nested.nested_vmx_ept_vpid_caps = VMX_EPT_PAGE_WALK_4_BIT | 2493 VMX_EPTP_WB_BIT | VMX_EPT_2MB_PAGE_BIT | 2494 VMX_EPT_INVEPT_BIT; 2495 vmx->nested.nested_vmx_ept_vpid_caps &= vmx_capability.ept; 2496 /* 2497 * For nested guests, we don't do anything specific 2498 * for single context invalidation. Hence, only advertise 2499 * support for global context invalidation. 2500 */ 2501 vmx->nested.nested_vmx_ept_vpid_caps |= VMX_EPT_EXTENT_GLOBAL_BIT; > 2502 vmx->nested.nested_vmx_ept_vpid_caps |= (unsigned long)vmx_capability.vpid << 32; 2503 } else 2504 vmx->nested.nested_vmx_ept_vpid_caps = 0; 2505 2506 if (enable_unrestricted_guest) 2507 vmx->nested.nested_vmx_secondary_ctls_high |= 2508 SECONDARY_EXEC_UNRESTRICTED_GUEST; 2509 2510 /* miscellaneous data */ --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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