6:23 p.m.
Hi Kechen,
[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on kvm/queue]
[also build test WARNING on mst-vhost/linux-next tip/master linux/master linus/master
v5.16-rc5]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url:
https://github.com/0day-ci/linux/commits/Kechen-Lu/KVM-x86-add-kvm-per-vC...
base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git queue
config: i386-buildonly-randconfig-r004-20211213
(https://download.01.org/0day-ci/archive/20211214/202112141509.dBVwl6Ux-lk...)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project
b6a2ddb6c8ac29412b1361810972e15221fa021c)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
chmod +x ~/bin/make.cross
#
https://github.com/0day-ci/linux/commit/08f20df47a09e327aee3e73a8d7c77b1f...
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review
Kechen-Lu/KVM-x86-add-kvm-per-vCPU-exits-disable-capability/20211214-113446
git checkout 08f20df47a09e327aee3e73a8d7c77b1ffc01bc0
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir
ARCH=i386 SHELL=/bin/bash arch/x86/kvm/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>):
> arch/x86/kvm/x86.c:5775:23: warning: shift count >= width of
type [-Wshift-count-overflow]
if (cap->args[0] &
~KVM_X86_DISABLE_VALID_EXITS)
^~~~~~~~~~~~~~~~~~~~~~~~~~~
include/uapi/linux/kvm.h:806:12: note: expanded from macro
'KVM_X86_DISABLE_VALID_EXITS'
KVM_X86_DISABLE_EXITS_PER_VCPU)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/uapi/linux/kvm.h:801:51: note: expanded from macro
'KVM_X86_DISABLE_EXITS_PER_VCPU'
#define KVM_X86_DISABLE_EXITS_PER_VCPU (1UL << 63)
^ ~~
arch/x86/kvm/x86.c:5787:23: warning: shift count >= width of type
[-Wshift-count-overflow]
if ((cap->args[0] & KVM_X86_DISABLE_EXITS_PER_VCPU) &&
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/uapi/linux/kvm.h:801:51: note: expanded from macro
'KVM_X86_DISABLE_EXITS_PER_VCPU'
#define KVM_X86_DISABLE_EXITS_PER_VCPU (1UL << 63)
^ ~~
arch/x86/kvm/x86.c:2335:19: warning: unused function 'gtod_is_based_on_tsc'
[-Wunused-function]
static inline int gtod_is_based_on_tsc(int mode)
^
3 warnings generated.
vim +5775 arch/x86/kvm/x86.c
23d43cf998275bc Christoffer Dall 2012-07-24 5724
e5d83c74a5800c2 Paolo Bonzini 2017-02-16 5725 int kvm_vm_ioctl_enable_cap(struct
kvm *kvm,
90de4a1875180f8 Nadav Amit 2015-04-13 5726 struct kvm_enable_cap *cap)
90de4a1875180f8 Nadav Amit 2015-04-13 5727 {
90de4a1875180f8 Nadav Amit 2015-04-13 5728 int r;
90de4a1875180f8 Nadav Amit 2015-04-13 5729
90de4a1875180f8 Nadav Amit 2015-04-13 5730 if (cap->flags)
90de4a1875180f8 Nadav Amit 2015-04-13 5731 return -EINVAL;
90de4a1875180f8 Nadav Amit 2015-04-13 5732
90de4a1875180f8 Nadav Amit 2015-04-13 5733 switch (cap->cap) {
90de4a1875180f8 Nadav Amit 2015-04-13 5734 case KVM_CAP_DISABLE_QUIRKS:
90de4a1875180f8 Nadav Amit 2015-04-13 5735 kvm->arch.disabled_quirks =
cap->args[0];
90de4a1875180f8 Nadav Amit 2015-04-13 5736 r = 0;
90de4a1875180f8 Nadav Amit 2015-04-13 5737 break;
49df6397edfc5a8 Steve Rutherford 2015-07-29 5738 case KVM_CAP_SPLIT_IRQCHIP: {
49df6397edfc5a8 Steve Rutherford 2015-07-29 5739 mutex_lock(&kvm->lock);
b053b2aef25d007 Steve Rutherford 2015-07-29 5740 r = -EINVAL;
b053b2aef25d007 Steve Rutherford 2015-07-29 5741 if (cap->args[0] >
MAX_NR_RESERVED_IOAPIC_PINS)
b053b2aef25d007 Steve Rutherford 2015-07-29 5742 goto split_irqchip_unlock;
49df6397edfc5a8 Steve Rutherford 2015-07-29 5743 r = -EEXIST;
49df6397edfc5a8 Steve Rutherford 2015-07-29 5744 if (irqchip_in_kernel(kvm))
49df6397edfc5a8 Steve Rutherford 2015-07-29 5745 goto split_irqchip_unlock;
557abc40d121358 Paolo Bonzini 2016-06-13 5746 if (kvm->created_vcpus)
49df6397edfc5a8 Steve Rutherford 2015-07-29 5747 goto split_irqchip_unlock;
49df6397edfc5a8 Steve Rutherford 2015-07-29 5748 r =
kvm_setup_empty_irq_routing(kvm);
5c0aea0e8d98e38 David Hildenbrand 2017-04-28 5749 if (r)
49df6397edfc5a8 Steve Rutherford 2015-07-29 5750 goto split_irqchip_unlock;
49df6397edfc5a8 Steve Rutherford 2015-07-29 5751 /* Pairs with irqchip_in_kernel.
*/
49df6397edfc5a8 Steve Rutherford 2015-07-29 5752 smp_wmb();
49776faf93f8074 Radim Krčmář 2016-12-16 5753 kvm->arch.irqchip_mode =
KVM_IRQCHIP_SPLIT;
b053b2aef25d007 Steve Rutherford 2015-07-29 5754
kvm->arch.nr_reserved_ioapic_pins = cap->args[0];
ef8b4b7203682cc Paolo Bonzini 2021-11-30 5755 kvm_request_apicv_update(kvm,
true, APICV_INHIBIT_REASON_ABSENT);
49df6397edfc5a8 Steve Rutherford 2015-07-29 5756 r = 0;
49df6397edfc5a8 Steve Rutherford 2015-07-29 5757 split_irqchip_unlock:
49df6397edfc5a8 Steve Rutherford 2015-07-29 5758 mutex_unlock(&kvm->lock);
49df6397edfc5a8 Steve Rutherford 2015-07-29 5759 break;
49df6397edfc5a8 Steve Rutherford 2015-07-29 5760 }
3713131345fbea2 Radim Krčmář 2016-07-12 5761 case KVM_CAP_X2APIC_API:
3713131345fbea2 Radim Krčmář 2016-07-12 5762 r = -EINVAL;
3713131345fbea2 Radim Krčmář 2016-07-12 5763 if (cap->args[0] &
~KVM_X2APIC_API_VALID_FLAGS)
3713131345fbea2 Radim Krčmář 2016-07-12 5764 break;
3713131345fbea2 Radim Krčmář 2016-07-12 5765
3713131345fbea2 Radim Krčmář 2016-07-12 5766 if (cap->args[0] &
KVM_X2APIC_API_USE_32BIT_IDS)
3713131345fbea2 Radim Krčmář 2016-07-12 5767 kvm->arch.x2apic_format =
true;
c519265f2aa348b Radim Krčmář 2016-07-12 5768 if (cap->args[0] &
KVM_X2APIC_API_DISABLE_BROADCAST_QUIRK)
c519265f2aa348b Radim Krčmář 2016-07-12 5769
kvm->arch.x2apic_broadcast_quirk_disabled = true;
3713131345fbea2 Radim Krčmář 2016-07-12 5770
3713131345fbea2 Radim Krčmář 2016-07-12 5771 r = 0;
3713131345fbea2 Radim Krčmář 2016-07-12 5772 break;
4d5422cea3b61f1 Wanpeng Li 2018-03-12 5773 case KVM_CAP_X86_DISABLE_EXITS:
4d5422cea3b61f1 Wanpeng Li 2018-03-12 5774 r = -EINVAL;
4d5422cea3b61f1 Wanpeng Li 2018-03-12 @5775 if (cap->args[0] &
~KVM_X86_DISABLE_VALID_EXITS)
4d5422cea3b61f1 Wanpeng Li 2018-03-12 5776 break;
4d5422cea3b61f1 Wanpeng Li 2018-03-12 5777
4d5422cea3b61f1 Wanpeng Li 2018-03-12 5778 if ((cap->args[0] &
KVM_X86_DISABLE_EXITS_MWAIT) &&
4d5422cea3b61f1 Wanpeng Li 2018-03-12 5779 kvm_can_mwait_in_guest())
4d5422cea3b61f1 Wanpeng Li 2018-03-12 5780 kvm->arch.mwait_in_guest =
true;
766d3571d8e50d3 Michael S. Tsirkin 2018-06-08 5781 if (cap->args[0] &
KVM_X86_DISABLE_EXITS_HLT)
caa057a2cad647f Wanpeng Li 2018-03-12 5782 kvm->arch.hlt_in_guest =
true;
b31c114b82b2b55 Wanpeng Li 2018-03-12 5783 if (cap->args[0] &
KVM_X86_DISABLE_EXITS_PAUSE)
b31c114b82b2b55 Wanpeng Li 2018-03-12 5784 kvm->arch.pause_in_guest =
true;
b51700632e0e532 Wanpeng Li 2019-05-21 5785 if (cap->args[0] &
KVM_X86_DISABLE_EXITS_CSTATE)
b51700632e0e532 Wanpeng Li 2019-05-21 5786 kvm->arch.cstate_in_guest =
true;
08f20df47a09e32 Kechen Lu 2021-12-13 5787 if ((cap->args[0] &
KVM_X86_DISABLE_EXITS_PER_VCPU) &&
08f20df47a09e32 Kechen Lu 2021-12-13 5788 cap->args[1])
08f20df47a09e32 Kechen Lu 2021-12-13 5789
kvm->arch.exits_disable_vcpu_mask = cap->args[1];
4d5422cea3b61f1 Wanpeng Li 2018-03-12 5790 r = 0;
4d5422cea3b61f1 Wanpeng Li 2018-03-12 5791 break;
6fbbde9a1969dfb Drew Schmitt 2018-08-20 5792 case KVM_CAP_MSR_PLATFORM_INFO:
6fbbde9a1969dfb Drew Schmitt 2018-08-20 5793
kvm->arch.guest_can_read_msr_platform_info = cap->args[0];
6fbbde9a1969dfb Drew Schmitt 2018-08-20 5794 r = 0;
c4f55198c7c2b87 Jim Mattson 2018-10-16 5795 break;
c4f55198c7c2b87 Jim Mattson 2018-10-16 5796 case KVM_CAP_EXCEPTION_PAYLOAD:
c4f55198c7c2b87 Jim Mattson 2018-10-16 5797
kvm->arch.exception_payload_enabled = cap->args[0];
c4f55198c7c2b87 Jim Mattson 2018-10-16 5798 r = 0;
6fbbde9a1969dfb Drew Schmitt 2018-08-20 5799 break;
1ae099540e8c7f1 Alexander Graf 2020-09-25 5800 case KVM_CAP_X86_USER_SPACE_MSR:
1ae099540e8c7f1 Alexander Graf 2020-09-25 5801 kvm->arch.user_space_msr_mask =
cap->args[0];
1ae099540e8c7f1 Alexander Graf 2020-09-25 5802 r = 0;
1ae099540e8c7f1 Alexander Graf 2020-09-25 5803 break;
fe6b6bc802b4008 Chenyi Qiang 2020-11-06 5804 case KVM_CAP_X86_BUS_LOCK_EXIT:
fe6b6bc802b4008 Chenyi Qiang 2020-11-06 5805 r = -EINVAL;
fe6b6bc802b4008 Chenyi Qiang 2020-11-06 5806 if (cap->args[0] &
~KVM_BUS_LOCK_DETECTION_VALID_MODE)
fe6b6bc802b4008 Chenyi Qiang 2020-11-06 5807 break;
fe6b6bc802b4008 Chenyi Qiang 2020-11-06 5808
fe6b6bc802b4008 Chenyi Qiang 2020-11-06 5809 if ((cap->args[0] &
KVM_BUS_LOCK_DETECTION_OFF) &&
fe6b6bc802b4008 Chenyi Qiang 2020-11-06 5810 (cap->args[0] &
KVM_BUS_LOCK_DETECTION_EXIT))
fe6b6bc802b4008 Chenyi Qiang 2020-11-06 5811 break;
fe6b6bc802b4008 Chenyi Qiang 2020-11-06 5812
fe6b6bc802b4008 Chenyi Qiang 2020-11-06 5813 if (kvm_has_bus_lock_exit
&&
fe6b6bc802b4008 Chenyi Qiang 2020-11-06 5814 cap->args[0] &
KVM_BUS_LOCK_DETECTION_EXIT)
fe6b6bc802b4008 Chenyi Qiang 2020-11-06 5815
kvm->arch.bus_lock_detection_enabled = true;
fe6b6bc802b4008 Chenyi Qiang 2020-11-06 5816 r = 0;
fe6b6bc802b4008 Chenyi Qiang 2020-11-06 5817 break;
fe7e948837f312d Sean Christopherson 2021-04-12 5818 #ifdef CONFIG_X86_SGX_KVM
fe7e948837f312d Sean Christopherson 2021-04-12 5819 case KVM_CAP_SGX_ATTRIBUTE: {
fe7e948837f312d Sean Christopherson 2021-04-12 5820 unsigned long allowed_attributes =
0;
fe7e948837f312d Sean Christopherson 2021-04-12 5821
fe7e948837f312d Sean Christopherson 2021-04-12 5822 r =
sgx_set_attribute(&allowed_attributes, cap->args[0]);
fe7e948837f312d Sean Christopherson 2021-04-12 5823 if (r)
fe7e948837f312d Sean Christopherson 2021-04-12 5824 break;
fe7e948837f312d Sean Christopherson 2021-04-12 5825
fe7e948837f312d Sean Christopherson 2021-04-12 5826 /* KVM only supports the
PROVISIONKEY privileged attribute. */
fe7e948837f312d Sean Christopherson 2021-04-12 5827 if ((allowed_attributes &
SGX_ATTR_PROVISIONKEY) &&
fe7e948837f312d Sean Christopherson 2021-04-12 5828 !(allowed_attributes &
~SGX_ATTR_PROVISIONKEY))
fe7e948837f312d Sean Christopherson 2021-04-12 5829
kvm->arch.sgx_provisioning_allowed = true;
fe7e948837f312d Sean Christopherson 2021-04-12 5830 else
fe7e948837f312d Sean Christopherson 2021-04-12 5831 r = -EINVAL;
fe7e948837f312d Sean Christopherson 2021-04-12 5832 break;
fe7e948837f312d Sean Christopherson 2021-04-12 5833 }
fe7e948837f312d Sean Christopherson 2021-04-12 5834 #endif
54526d1fd59338f Nathan Tempelman 2021-04-08 5835 case
KVM_CAP_VM_COPY_ENC_CONTEXT_FROM:
54526d1fd59338f Nathan Tempelman 2021-04-08 5836 r = -EINVAL;
54526d1fd59338f Nathan Tempelman 2021-04-08 5837 if
(kvm_x86_ops.vm_copy_enc_context_from)
54526d1fd59338f Nathan Tempelman 2021-04-08 5838 r =
kvm_x86_ops.vm_copy_enc_context_from(kvm, cap->args[0]);
54526d1fd59338f Nathan Tempelman 2021-04-08 5839 return r;
b56639318bb2be6 Peter Gonda 2021-10-21 5840 case
KVM_CAP_VM_MOVE_ENC_CONTEXT_FROM:
b56639318bb2be6 Peter Gonda 2021-10-21 5841 r = -EINVAL;
b56639318bb2be6 Peter Gonda 2021-10-21 5842 if
(kvm_x86_ops.vm_move_enc_context_from)
b56639318bb2be6 Peter Gonda 2021-10-21 5843 r =
kvm_x86_ops.vm_move_enc_context_from(
b56639318bb2be6 Peter Gonda 2021-10-21 5844 kvm, cap->args[0]);
b56639318bb2be6 Peter Gonda 2021-10-21 5845 return r;
0dbb11230437895 Ashish Kalra 2021-06-08 5846 case KVM_CAP_EXIT_HYPERCALL:
0dbb11230437895 Ashish Kalra 2021-06-08 5847 if (cap->args[0] &
~KVM_EXIT_HYPERCALL_VALID_MASK) {
0dbb11230437895 Ashish Kalra 2021-06-08 5848 r = -EINVAL;
0dbb11230437895 Ashish Kalra 2021-06-08 5849 break;
0dbb11230437895 Ashish Kalra 2021-06-08 5850 }
0dbb11230437895 Ashish Kalra 2021-06-08 5851
kvm->arch.hypercall_exit_enabled = cap->args[0];
0dbb11230437895 Ashish Kalra 2021-06-08 5852 r = 0;
0dbb11230437895 Ashish Kalra 2021-06-08 5853 break;
19238e75bd8ed8f Aaron Lewis 2021-05-10 5854 case
KVM_CAP_EXIT_ON_EMULATION_FAILURE:
19238e75bd8ed8f Aaron Lewis 2021-05-10 5855 r = -EINVAL;
19238e75bd8ed8f Aaron Lewis 2021-05-10 5856 if (cap->args[0] & ~1)
19238e75bd8ed8f Aaron Lewis 2021-05-10 5857 break;
19238e75bd8ed8f Aaron Lewis 2021-05-10 5858
kvm->arch.exit_on_emulation_error = cap->args[0];
19238e75bd8ed8f Aaron Lewis 2021-05-10 5859 r = 0;
19238e75bd8ed8f Aaron Lewis 2021-05-10 5860 break;
90de4a1875180f8 Nadav Amit 2015-04-13 5861 default:
90de4a1875180f8 Nadav Amit 2015-04-13 5862 r = -EINVAL;
90de4a1875180f8 Nadav Amit 2015-04-13 5863 break;
90de4a1875180f8 Nadav Amit 2015-04-13 5864 }
90de4a1875180f8 Nadav Amit 2015-04-13 5865 return r;
90de4a1875180f8 Nadav Amit 2015-04-13 5866 }
90de4a1875180f8 Nadav Amit 2015-04-13 5867
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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