See lines 5185 and 5186. julia ---------- Forwarded message ---------- Date: Wed, 1 Jan 2020 14:03:47 +0800 From: kbuild test robot <lkp@xxxxxxxxx> To: kbuild@xxxxxxxxxxxx Cc: Julia Lawall <julia.lawall@xxxxxxx> Subject: Re: [PATCH v10 05/10] x86: spp: Introduce user-space SPP IOCTLs CC: kbuild-all@xxxxxxxxxxxx In-Reply-To: <20191231065043.2209-6-weijiang.yang@xxxxxxxxx> References: <20191231065043.2209-6-weijiang.yang@xxxxxxxxx> TO: Yang Weijiang <weijiang.yang@xxxxxxxxx> CC: kvm@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, pbonzini@xxxxxxxxxx, jmattson@xxxxxxxxxx, sean.j.christopherson@xxxxxxxxx CC: yu.c.zhang@xxxxxxxxxxxxxxx, alazar@xxxxxxxxxxxxxxx, edwin.zhai@xxxxxxxxx, Yang Weijiang <weijiang.yang@xxxxxxxxx> Hi Yang, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on kvm/linux-next] [also build test WARNING on vhost/linux-next tip/auto-latest linux/master linus/master v5.5-rc4 next-20191220] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Yang-Weijiang/Enable-Sub-Page-Write-Protection-Support/20191231-145254 base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next :::::: branch date: 23 hours ago :::::: commit date: 23 hours ago If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> Reported-by: Julia Lawall <julia.lawall@xxxxxxx> >> arch/x86/kvm/x86.c:5186:6-11: ERROR: reference preceded by free on line 5185 # https://github.com/0day-ci/linux/commit/148f2ec985f4ef45bcde3f5a787394f23a18e800 git remote add linux-review https://github.com/0day-ci/linux git remote update linux-review git checkout 148f2ec985f4ef45bcde3f5a787394f23a18e800 vim +5186 arch/x86/kvm/x86.c 90de4a1875180f arch/x86/kvm/x86.c Nadav Amit 2015-04-13 4844 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4845 long kvm_arch_vm_ioctl(struct file *filp, 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4846 unsigned int ioctl, unsigned long arg) 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4847 { 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4848 struct kvm *kvm = filp->private_data; 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4849 void __user *argp = (void __user *)arg; 367e1319b22911 arch/x86/kvm/x86.c Avi Kivity 2009-08-26 4850 int r = -ENOTTY; f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 4851 /* f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 4852 * This union makes it completely explicit to gcc-3.x f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 4853 * that these two variables' stack usage should be f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 4854 * combined, not added together. f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 4855 */ f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 4856 union { f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 4857 struct kvm_pit_state ps; e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 4858 struct kvm_pit_state2 ps2; c5ff41ce66382d arch/x86/kvm/x86.c Jan Kiszka 2009-05-14 4859 struct kvm_pit_config pit_config; f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 4860 } u; 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4861 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4862 switch (ioctl) { 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4863 case KVM_SET_TSS_ADDR: 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4864 r = kvm_vm_ioctl_set_tss_addr(kvm, arg); 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4865 break; b927a3cec081a6 arch/x86/kvm/x86.c Sheng Yang 2009-07-21 4866 case KVM_SET_IDENTITY_MAP_ADDR: { b927a3cec081a6 arch/x86/kvm/x86.c Sheng Yang 2009-07-21 4867 u64 ident_addr; b927a3cec081a6 arch/x86/kvm/x86.c Sheng Yang 2009-07-21 4868 1af1ac910bb339 arch/x86/kvm/x86.c David Hildenbrand 2017-08-24 4869 mutex_lock(&kvm->lock); 1af1ac910bb339 arch/x86/kvm/x86.c David Hildenbrand 2017-08-24 4870 r = -EINVAL; 1af1ac910bb339 arch/x86/kvm/x86.c David Hildenbrand 2017-08-24 4871 if (kvm->created_vcpus) 1af1ac910bb339 arch/x86/kvm/x86.c David Hildenbrand 2017-08-24 4872 goto set_identity_unlock; b927a3cec081a6 arch/x86/kvm/x86.c Sheng Yang 2009-07-21 4873 r = -EFAULT; 0e96f31ea4249b arch/x86/kvm/x86.c Jordan Borgner 2018-10-28 4874 if (copy_from_user(&ident_addr, argp, sizeof(ident_addr))) 1af1ac910bb339 arch/x86/kvm/x86.c David Hildenbrand 2017-08-24 4875 goto set_identity_unlock; b927a3cec081a6 arch/x86/kvm/x86.c Sheng Yang 2009-07-21 4876 r = kvm_vm_ioctl_set_identity_map_addr(kvm, ident_addr); 1af1ac910bb339 arch/x86/kvm/x86.c David Hildenbrand 2017-08-24 4877 set_identity_unlock: 1af1ac910bb339 arch/x86/kvm/x86.c David Hildenbrand 2017-08-24 4878 mutex_unlock(&kvm->lock); b927a3cec081a6 arch/x86/kvm/x86.c Sheng Yang 2009-07-21 4879 break; b927a3cec081a6 arch/x86/kvm/x86.c Sheng Yang 2009-07-21 4880 } 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4881 case KVM_SET_NR_MMU_PAGES: 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4882 r = kvm_vm_ioctl_set_nr_mmu_pages(kvm, arg); 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4883 break; 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4884 case KVM_GET_NR_MMU_PAGES: 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4885 r = kvm_vm_ioctl_get_nr_mmu_pages(kvm); 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4886 break; 3ddea128ad75bd arch/x86/kvm/x86.c Marcelo Tosatti 2009-10-29 4887 case KVM_CREATE_IRQCHIP: { 3ddea128ad75bd arch/x86/kvm/x86.c Marcelo Tosatti 2009-10-29 4888 mutex_lock(&kvm->lock); 099413664c71fc arch/x86/kvm/x86.c Radim Krčmář 2016-12-16 4889 3ddea128ad75bd arch/x86/kvm/x86.c Marcelo Tosatti 2009-10-29 4890 r = -EEXIST; 35e6eaa3df5582 arch/x86/kvm/x86.c Radim Krčmář 2016-12-16 4891 if (irqchip_in_kernel(kvm)) 3ddea128ad75bd arch/x86/kvm/x86.c Marcelo Tosatti 2009-10-29 4892 goto create_irqchip_unlock; 099413664c71fc arch/x86/kvm/x86.c Radim Krčmář 2016-12-16 4893 3e515705a1f46b arch/x86/kvm/x86.c Avi Kivity 2012-03-05 4894 r = -EINVAL; 557abc40d12135 arch/x86/kvm/x86.c Paolo Bonzini 2016-06-13 4895 if (kvm->created_vcpus) 3e515705a1f46b arch/x86/kvm/x86.c Avi Kivity 2012-03-05 4896 goto create_irqchip_unlock; 099413664c71fc arch/x86/kvm/x86.c Radim Krčmář 2016-12-16 4897 099413664c71fc arch/x86/kvm/x86.c Radim Krčmář 2016-12-16 4898 r = kvm_pic_init(kvm); 099413664c71fc arch/x86/kvm/x86.c Radim Krčmář 2016-12-16 4899 if (r) 099413664c71fc arch/x86/kvm/x86.c Radim Krčmář 2016-12-16 4900 goto create_irqchip_unlock; 099413664c71fc arch/x86/kvm/x86.c Radim Krčmář 2016-12-16 4901 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4902 r = kvm_ioapic_init(kvm); 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4903 if (r) { 099413664c71fc arch/x86/kvm/x86.c Radim Krčmář 2016-12-16 4904 kvm_pic_destroy(kvm); 3ddea128ad75bd arch/x86/kvm/x86.c Marcelo Tosatti 2009-10-29 4905 goto create_irqchip_unlock; 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4906 } 099413664c71fc arch/x86/kvm/x86.c Radim Krčmář 2016-12-16 4907 399ec807ddc38e arch/x86/kvm/x86.c Avi Kivity 2008-11-19 4908 r = kvm_setup_default_irq_routing(kvm); 399ec807ddc38e arch/x86/kvm/x86.c Avi Kivity 2008-11-19 4909 if (r) { 72bb2fcd23afe8 arch/x86/kvm/x86.c Wei Yongjun 2010-02-09 4910 kvm_ioapic_destroy(kvm); 099413664c71fc arch/x86/kvm/x86.c Radim Krčmář 2016-12-16 4911 kvm_pic_destroy(kvm); 71ba994c94a81c arch/x86/kvm/x86.c Paolo Bonzini 2015-07-29 4912 goto create_irqchip_unlock; 399ec807ddc38e arch/x86/kvm/x86.c Avi Kivity 2008-11-19 4913 } 49776faf93f807 arch/x86/kvm/x86.c Radim Krčmář 2016-12-16 4914 /* Write kvm->irq_routing before enabling irqchip_in_kernel. */ 71ba994c94a81c arch/x86/kvm/x86.c Paolo Bonzini 2015-07-29 4915 smp_wmb(); 49776faf93f807 arch/x86/kvm/x86.c Radim Krčmář 2016-12-16 4916 kvm->arch.irqchip_mode = KVM_IRQCHIP_KERNEL; 3ddea128ad75bd arch/x86/kvm/x86.c Marcelo Tosatti 2009-10-29 4917 create_irqchip_unlock: 3ddea128ad75bd arch/x86/kvm/x86.c Marcelo Tosatti 2009-10-29 4918 mutex_unlock(&kvm->lock); 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4919 break; 3ddea128ad75bd arch/x86/kvm/x86.c Marcelo Tosatti 2009-10-29 4920 } 7837699fa6d7ad arch/x86/kvm/x86.c Sheng Yang 2008-01-28 4921 case KVM_CREATE_PIT: c5ff41ce66382d arch/x86/kvm/x86.c Jan Kiszka 2009-05-14 4922 u.pit_config.flags = KVM_PIT_SPEAKER_DUMMY; c5ff41ce66382d arch/x86/kvm/x86.c Jan Kiszka 2009-05-14 4923 goto create_pit; c5ff41ce66382d arch/x86/kvm/x86.c Jan Kiszka 2009-05-14 4924 case KVM_CREATE_PIT2: c5ff41ce66382d arch/x86/kvm/x86.c Jan Kiszka 2009-05-14 4925 r = -EFAULT; c5ff41ce66382d arch/x86/kvm/x86.c Jan Kiszka 2009-05-14 4926 if (copy_from_user(&u.pit_config, argp, c5ff41ce66382d arch/x86/kvm/x86.c Jan Kiszka 2009-05-14 4927 sizeof(struct kvm_pit_config))) c5ff41ce66382d arch/x86/kvm/x86.c Jan Kiszka 2009-05-14 4928 goto out; c5ff41ce66382d arch/x86/kvm/x86.c Jan Kiszka 2009-05-14 4929 create_pit: 250715a6171a07 arch/x86/kvm/x86.c Paolo Bonzini 2016-06-01 4930 mutex_lock(&kvm->lock); 269e05e48502f1 arch/x86/kvm/x86.c Avi Kivity 2009-01-05 4931 r = -EEXIST; 269e05e48502f1 arch/x86/kvm/x86.c Avi Kivity 2009-01-05 4932 if (kvm->arch.vpit) 269e05e48502f1 arch/x86/kvm/x86.c Avi Kivity 2009-01-05 4933 goto create_pit_unlock; 7837699fa6d7ad arch/x86/kvm/x86.c Sheng Yang 2008-01-28 4934 r = -ENOMEM; c5ff41ce66382d arch/x86/kvm/x86.c Jan Kiszka 2009-05-14 4935 kvm->arch.vpit = kvm_create_pit(kvm, u.pit_config.flags); 7837699fa6d7ad arch/x86/kvm/x86.c Sheng Yang 2008-01-28 4936 if (kvm->arch.vpit) 7837699fa6d7ad arch/x86/kvm/x86.c Sheng Yang 2008-01-28 4937 r = 0; 269e05e48502f1 arch/x86/kvm/x86.c Avi Kivity 2009-01-05 4938 create_pit_unlock: 250715a6171a07 arch/x86/kvm/x86.c Paolo Bonzini 2016-06-01 4939 mutex_unlock(&kvm->lock); 7837699fa6d7ad arch/x86/kvm/x86.c Sheng Yang 2008-01-28 4940 break; 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4941 case KVM_GET_IRQCHIP: { 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4942 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */ ff5c2c0316ff0e arch/x86/kvm/x86.c Sasha Levin 2011-12-04 4943 struct kvm_irqchip *chip; 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4944 ff5c2c0316ff0e arch/x86/kvm/x86.c Sasha Levin 2011-12-04 4945 chip = memdup_user(argp, sizeof(*chip)); ff5c2c0316ff0e arch/x86/kvm/x86.c Sasha Levin 2011-12-04 4946 if (IS_ERR(chip)) { ff5c2c0316ff0e arch/x86/kvm/x86.c Sasha Levin 2011-12-04 4947 r = PTR_ERR(chip); 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4948 goto out; ff5c2c0316ff0e arch/x86/kvm/x86.c Sasha Levin 2011-12-04 4949 } ff5c2c0316ff0e arch/x86/kvm/x86.c Sasha Levin 2011-12-04 4950 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4951 r = -ENXIO; 826da32140dada arch/x86/kvm/x86.c Radim Krčmář 2016-12-16 4952 if (!irqchip_kernel(kvm)) f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 4953 goto get_irqchip_out; f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 4954 r = kvm_vm_ioctl_get_irqchip(kvm, chip); 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4955 if (r) f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 4956 goto get_irqchip_out; 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4957 r = -EFAULT; 0e96f31ea4249b arch/x86/kvm/x86.c Jordan Borgner 2018-10-28 4958 if (copy_to_user(argp, chip, sizeof(*chip))) f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 4959 goto get_irqchip_out; 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4960 r = 0; f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 4961 get_irqchip_out: f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 4962 kfree(chip); 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4963 break; 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4964 } 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4965 case KVM_SET_IRQCHIP: { 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4966 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */ ff5c2c0316ff0e arch/x86/kvm/x86.c Sasha Levin 2011-12-04 4967 struct kvm_irqchip *chip; 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4968 ff5c2c0316ff0e arch/x86/kvm/x86.c Sasha Levin 2011-12-04 4969 chip = memdup_user(argp, sizeof(*chip)); ff5c2c0316ff0e arch/x86/kvm/x86.c Sasha Levin 2011-12-04 4970 if (IS_ERR(chip)) { ff5c2c0316ff0e arch/x86/kvm/x86.c Sasha Levin 2011-12-04 4971 r = PTR_ERR(chip); 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4972 goto out; ff5c2c0316ff0e arch/x86/kvm/x86.c Sasha Levin 2011-12-04 4973 } ff5c2c0316ff0e arch/x86/kvm/x86.c Sasha Levin 2011-12-04 4974 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4975 r = -ENXIO; 826da32140dada arch/x86/kvm/x86.c Radim Krčmář 2016-12-16 4976 if (!irqchip_kernel(kvm)) f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 4977 goto set_irqchip_out; f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 4978 r = kvm_vm_ioctl_set_irqchip(kvm, chip); f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 4979 set_irqchip_out: f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 4980 kfree(chip); 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4981 break; 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 4982 } e0f63cb9277b64 arch/x86/kvm/x86.c Sheng Yang 2008-03-04 4983 case KVM_GET_PIT: { e0f63cb9277b64 arch/x86/kvm/x86.c Sheng Yang 2008-03-04 4984 r = -EFAULT; f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 4985 if (copy_from_user(&u.ps, argp, sizeof(struct kvm_pit_state))) e0f63cb9277b64 arch/x86/kvm/x86.c Sheng Yang 2008-03-04 4986 goto out; e0f63cb9277b64 arch/x86/kvm/x86.c Sheng Yang 2008-03-04 4987 r = -ENXIO; e0f63cb9277b64 arch/x86/kvm/x86.c Sheng Yang 2008-03-04 4988 if (!kvm->arch.vpit) e0f63cb9277b64 arch/x86/kvm/x86.c Sheng Yang 2008-03-04 4989 goto out; f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 4990 r = kvm_vm_ioctl_get_pit(kvm, &u.ps); e0f63cb9277b64 arch/x86/kvm/x86.c Sheng Yang 2008-03-04 4991 if (r) e0f63cb9277b64 arch/x86/kvm/x86.c Sheng Yang 2008-03-04 4992 goto out; e0f63cb9277b64 arch/x86/kvm/x86.c Sheng Yang 2008-03-04 4993 r = -EFAULT; f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 4994 if (copy_to_user(argp, &u.ps, sizeof(struct kvm_pit_state))) e0f63cb9277b64 arch/x86/kvm/x86.c Sheng Yang 2008-03-04 4995 goto out; e0f63cb9277b64 arch/x86/kvm/x86.c Sheng Yang 2008-03-04 4996 r = 0; e0f63cb9277b64 arch/x86/kvm/x86.c Sheng Yang 2008-03-04 4997 break; e0f63cb9277b64 arch/x86/kvm/x86.c Sheng Yang 2008-03-04 4998 } e0f63cb9277b64 arch/x86/kvm/x86.c Sheng Yang 2008-03-04 4999 case KVM_SET_PIT: { e0f63cb9277b64 arch/x86/kvm/x86.c Sheng Yang 2008-03-04 5000 r = -EFAULT; 0e96f31ea4249b arch/x86/kvm/x86.c Jordan Borgner 2018-10-28 5001 if (copy_from_user(&u.ps, argp, sizeof(u.ps))) e0f63cb9277b64 arch/x86/kvm/x86.c Sheng Yang 2008-03-04 5002 goto out; e0f63cb9277b64 arch/x86/kvm/x86.c Sheng Yang 2008-03-04 5003 r = -ENXIO; e0f63cb9277b64 arch/x86/kvm/x86.c Sheng Yang 2008-03-04 5004 if (!kvm->arch.vpit) e0f63cb9277b64 arch/x86/kvm/x86.c Sheng Yang 2008-03-04 5005 goto out; f0d662759a2465 arch/x86/kvm/x86.c Dave Hansen 2008-08-11 5006 r = kvm_vm_ioctl_set_pit(kvm, &u.ps); e0f63cb9277b64 arch/x86/kvm/x86.c Sheng Yang 2008-03-04 5007 break; e0f63cb9277b64 arch/x86/kvm/x86.c Sheng Yang 2008-03-04 5008 } e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5009 case KVM_GET_PIT2: { e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5010 r = -ENXIO; e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5011 if (!kvm->arch.vpit) e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5012 goto out; e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5013 r = kvm_vm_ioctl_get_pit2(kvm, &u.ps2); e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5014 if (r) e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5015 goto out; e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5016 r = -EFAULT; e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5017 if (copy_to_user(argp, &u.ps2, sizeof(u.ps2))) e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5018 goto out; e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5019 r = 0; e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5020 break; e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5021 } e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5022 case KVM_SET_PIT2: { e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5023 r = -EFAULT; e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5024 if (copy_from_user(&u.ps2, argp, sizeof(u.ps2))) e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5025 goto out; e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5026 r = -ENXIO; e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5027 if (!kvm->arch.vpit) e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5028 goto out; e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5029 r = kvm_vm_ioctl_set_pit2(kvm, &u.ps2); e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5030 break; e9f4275732add0 arch/x86/kvm/x86.c Beth Kon 2009-07-07 5031 } 52d939a0bf4408 arch/x86/kvm/x86.c Marcelo Tosatti 2008-12-30 5032 case KVM_REINJECT_CONTROL: { 52d939a0bf4408 arch/x86/kvm/x86.c Marcelo Tosatti 2008-12-30 5033 struct kvm_reinject_control control; 52d939a0bf4408 arch/x86/kvm/x86.c Marcelo Tosatti 2008-12-30 5034 r = -EFAULT; 52d939a0bf4408 arch/x86/kvm/x86.c Marcelo Tosatti 2008-12-30 5035 if (copy_from_user(&control, argp, sizeof(control))) 52d939a0bf4408 arch/x86/kvm/x86.c Marcelo Tosatti 2008-12-30 5036 goto out; 52d939a0bf4408 arch/x86/kvm/x86.c Marcelo Tosatti 2008-12-30 5037 r = kvm_vm_ioctl_reinject(kvm, &control); 52d939a0bf4408 arch/x86/kvm/x86.c Marcelo Tosatti 2008-12-30 5038 break; 52d939a0bf4408 arch/x86/kvm/x86.c Marcelo Tosatti 2008-12-30 5039 } d71ba788345c2b arch/x86/kvm/x86.c Paolo Bonzini 2015-07-29 5040 case KVM_SET_BOOT_CPU_ID: d71ba788345c2b arch/x86/kvm/x86.c Paolo Bonzini 2015-07-29 5041 r = 0; d71ba788345c2b arch/x86/kvm/x86.c Paolo Bonzini 2015-07-29 5042 mutex_lock(&kvm->lock); 557abc40d12135 arch/x86/kvm/x86.c Paolo Bonzini 2016-06-13 5043 if (kvm->created_vcpus) d71ba788345c2b arch/x86/kvm/x86.c Paolo Bonzini 2015-07-29 5044 r = -EBUSY; d71ba788345c2b arch/x86/kvm/x86.c Paolo Bonzini 2015-07-29 5045 else d71ba788345c2b arch/x86/kvm/x86.c Paolo Bonzini 2015-07-29 5046 kvm->arch.bsp_vcpu_id = arg; d71ba788345c2b arch/x86/kvm/x86.c Paolo Bonzini 2015-07-29 5047 mutex_unlock(&kvm->lock); d71ba788345c2b arch/x86/kvm/x86.c Paolo Bonzini 2015-07-29 5048 break; ffde22ac53b6d6 arch/x86/kvm/x86.c Ed Swierk 2009-10-15 5049 case KVM_XEN_HVM_CONFIG: { 51776043afa415 arch/x86/kvm/x86.c Paolo Bonzini 2017-10-26 5050 struct kvm_xen_hvm_config xhc; ffde22ac53b6d6 arch/x86/kvm/x86.c Ed Swierk 2009-10-15 5051 r = -EFAULT; 51776043afa415 arch/x86/kvm/x86.c Paolo Bonzini 2017-10-26 5052 if (copy_from_user(&xhc, argp, sizeof(xhc))) ffde22ac53b6d6 arch/x86/kvm/x86.c Ed Swierk 2009-10-15 5053 goto out; ffde22ac53b6d6 arch/x86/kvm/x86.c Ed Swierk 2009-10-15 5054 r = -EINVAL; 51776043afa415 arch/x86/kvm/x86.c Paolo Bonzini 2017-10-26 5055 if (xhc.flags) ffde22ac53b6d6 arch/x86/kvm/x86.c Ed Swierk 2009-10-15 5056 goto out; 51776043afa415 arch/x86/kvm/x86.c Paolo Bonzini 2017-10-26 5057 memcpy(&kvm->arch.xen_hvm_config, &xhc, sizeof(xhc)); ffde22ac53b6d6 arch/x86/kvm/x86.c Ed Swierk 2009-10-15 5058 r = 0; ffde22ac53b6d6 arch/x86/kvm/x86.c Ed Swierk 2009-10-15 5059 break; ffde22ac53b6d6 arch/x86/kvm/x86.c Ed Swierk 2009-10-15 5060 } afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5061 case KVM_SET_CLOCK: { afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5062 struct kvm_clock_data user_ns; afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5063 u64 now_ns; afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5064 afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5065 r = -EFAULT; afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5066 if (copy_from_user(&user_ns, argp, sizeof(user_ns))) afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5067 goto out; afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5068 afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5069 r = -EINVAL; afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5070 if (user_ns.flags) afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5071 goto out; afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5072 afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5073 r = 0; 0bc48bea36d178 arch/x86/kvm/x86.c Radim Krčmář 2017-05-16 5074 /* 0bc48bea36d178 arch/x86/kvm/x86.c Radim Krčmář 2017-05-16 5075 * TODO: userspace has to take care of races with VCPU_RUN, so 0bc48bea36d178 arch/x86/kvm/x86.c Radim Krčmář 2017-05-16 5076 * kvm_gen_update_masterclock() can be cut down to locked 0bc48bea36d178 arch/x86/kvm/x86.c Radim Krčmář 2017-05-16 5077 * pvclock_update_vm_gtod_copy(). 0bc48bea36d178 arch/x86/kvm/x86.c Radim Krčmář 2017-05-16 5078 */ 0bc48bea36d178 arch/x86/kvm/x86.c Radim Krčmář 2017-05-16 5079 kvm_gen_update_masterclock(kvm); e891a32e7ae0c6 arch/x86/kvm/x86.c Marcelo Tosatti 2017-04-17 5080 now_ns = get_kvmclock_ns(kvm); 108b249c453dd7 arch/x86/kvm/x86.c Paolo Bonzini 2016-09-01 5081 kvm->arch.kvmclock_offset += user_ns.clock - now_ns; 0bc48bea36d178 arch/x86/kvm/x86.c Radim Krčmář 2017-05-16 5082 kvm_make_all_cpus_request(kvm, KVM_REQ_CLOCK_UPDATE); afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5083 break; afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5084 } afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5085 case KVM_GET_CLOCK: { afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5086 struct kvm_clock_data user_ns; afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5087 u64 now_ns; afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5088 e891a32e7ae0c6 arch/x86/kvm/x86.c Marcelo Tosatti 2017-04-17 5089 now_ns = get_kvmclock_ns(kvm); 108b249c453dd7 arch/x86/kvm/x86.c Paolo Bonzini 2016-09-01 5090 user_ns.clock = now_ns; e3fd9a93a12a10 arch/x86/kvm/x86.c Paolo Bonzini 2016-11-09 5091 user_ns.flags = kvm->arch.use_master_clock ? KVM_CLOCK_TSC_STABLE : 0; 97e69aa62f8b5d arch/x86/kvm/x86.c Vasiliy Kulikov 2010-10-30 5092 memset(&user_ns.pad, 0, sizeof(user_ns.pad)); afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5093 afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5094 r = -EFAULT; afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5095 if (copy_to_user(argp, &user_ns, sizeof(user_ns))) afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5096 goto out; afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5097 r = 0; afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5098 break; afbcf7ab8d1bc8 arch/x86/kvm/x86.c Glauber Costa 2009-10-16 5099 } 5acc5c063196b4 arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5100 case KVM_MEMORY_ENCRYPT_OP: { 5acc5c063196b4 arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5101 r = -ENOTTY; 5acc5c063196b4 arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5102 if (kvm_x86_ops->mem_enc_op) 5acc5c063196b4 arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5103 r = kvm_x86_ops->mem_enc_op(kvm, argp); 5acc5c063196b4 arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5104 break; 5acc5c063196b4 arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5105 } 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5106 case KVM_MEMORY_ENCRYPT_REG_REGION: { 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5107 struct kvm_enc_region region; 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5108 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5109 r = -EFAULT; 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5110 if (copy_from_user(®ion, argp, sizeof(region))) 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5111 goto out; 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5112 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5113 r = -ENOTTY; 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5114 if (kvm_x86_ops->mem_enc_reg_region) 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5115 r = kvm_x86_ops->mem_enc_reg_region(kvm, ®ion); 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5116 break; 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5117 } 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5118 case KVM_MEMORY_ENCRYPT_UNREG_REGION: { 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5119 struct kvm_enc_region region; 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5120 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5121 r = -EFAULT; 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5122 if (copy_from_user(®ion, argp, sizeof(region))) 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5123 goto out; 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5124 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5125 r = -ENOTTY; 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5126 if (kvm_x86_ops->mem_enc_unreg_region) 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5127 r = kvm_x86_ops->mem_enc_unreg_region(kvm, ®ion); 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5128 break; 69eaedee411c1f arch/x86/kvm/x86.c Brijesh Singh 2017-12-04 5129 } faeb7833eee0d6 arch/x86/kvm/x86.c Roman Kagan 2018-02-01 5130 case KVM_HYPERV_EVENTFD: { faeb7833eee0d6 arch/x86/kvm/x86.c Roman Kagan 2018-02-01 5131 struct kvm_hyperv_eventfd hvevfd; faeb7833eee0d6 arch/x86/kvm/x86.c Roman Kagan 2018-02-01 5132 faeb7833eee0d6 arch/x86/kvm/x86.c Roman Kagan 2018-02-01 5133 r = -EFAULT; faeb7833eee0d6 arch/x86/kvm/x86.c Roman Kagan 2018-02-01 5134 if (copy_from_user(&hvevfd, argp, sizeof(hvevfd))) faeb7833eee0d6 arch/x86/kvm/x86.c Roman Kagan 2018-02-01 5135 goto out; faeb7833eee0d6 arch/x86/kvm/x86.c Roman Kagan 2018-02-01 5136 r = kvm_vm_ioctl_hv_eventfd(kvm, &hvevfd); faeb7833eee0d6 arch/x86/kvm/x86.c Roman Kagan 2018-02-01 5137 break; faeb7833eee0d6 arch/x86/kvm/x86.c Roman Kagan 2018-02-01 5138 } 66bb8a065f5aed arch/x86/kvm/x86.c Eric Hankland 2019-07-10 5139 case KVM_SET_PMU_EVENT_FILTER: 66bb8a065f5aed arch/x86/kvm/x86.c Eric Hankland 2019-07-10 5140 r = kvm_vm_ioctl_set_pmu_event_filter(kvm, argp); 66bb8a065f5aed arch/x86/kvm/x86.c Eric Hankland 2019-07-10 5141 break; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5142 case KVM_SUBPAGES_GET_ACCESS: { 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5143 struct kvm_subpage spp_info, *pinfo; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5144 u32 total; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5145 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5146 r = -ENODEV; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5147 if (!kvm->arch.spp_active) 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5148 goto out; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5149 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5150 r = -EFAULT; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5151 if (copy_from_user(&spp_info, argp, sizeof(spp_info))) 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5152 goto out; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5153 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5154 r = -EINVAL; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5155 if (spp_info.flags != 0 || 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5156 spp_info.npages > KVM_SUBPAGE_MAX_PAGES) 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5157 goto out; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5158 r = 0; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5159 if (!spp_info.npages) 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5160 goto out; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5161 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5162 total = sizeof(spp_info) + 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5163 sizeof(spp_info.access_map[0]) * spp_info.npages; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5164 pinfo = kvzalloc(total, GFP_KERNEL_ACCOUNT); 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5165 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5166 r = -ENOMEM; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5167 if (!pinfo) 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5168 goto out; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5169 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5170 r = -EFAULT; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5171 if (copy_from_user(pinfo, argp, total)) 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5172 goto out; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5173 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5174 r = kvm_vm_ioctl_get_subpages(kvm, 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5175 pinfo->gfn_base, 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5176 pinfo->npages, 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5177 pinfo->access_map); 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5178 if (r != pinfo->npages) 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5179 goto out; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5180 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5181 r = -EFAULT; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5182 if (copy_to_user(argp, pinfo, total)) 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5183 goto out; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5184 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 @5185 kfree(pinfo); 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 @5186 r = pinfo->npages; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5187 break; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5188 } 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5189 case KVM_SUBPAGES_SET_ACCESS: { 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5190 struct kvm_subpage spp_info, *pinfo; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5191 u32 total; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5192 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5193 r = -ENODEV; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5194 if (!kvm->arch.spp_active) 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5195 goto out; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5196 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5197 r = -EFAULT; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5198 if (copy_from_user(&spp_info, argp, sizeof(spp_info))) 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5199 goto out; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5200 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5201 r = -EINVAL; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5202 if (spp_info.flags != 0 || 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5203 spp_info.npages > KVM_SUBPAGE_MAX_PAGES) 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5204 goto out; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5205 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5206 r = 0; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5207 if (!spp_info.npages) 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5208 goto out; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5209 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5210 total = sizeof(spp_info) + 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5211 sizeof(spp_info.access_map[0]) * spp_info.npages; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5212 pinfo = kvzalloc(total, GFP_KERNEL_ACCOUNT); 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5213 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5214 r = -ENOMEM; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5215 if (!pinfo) 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5216 goto out; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5217 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5218 r = -EFAULT; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5219 if (copy_from_user(pinfo, argp, total)) 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5220 goto out; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5221 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5222 r = kvm_vm_ioctl_set_subpages(kvm, 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5223 pinfo->gfn_base, 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5224 pinfo->npages, 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5225 pinfo->access_map); 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5226 kfree(pinfo); 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5227 break; 148f2ec985f4ef arch/x86/kvm/x86.c Yang Weijiang 2019-12-31 5228 } 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 5229 default: ad6260da1e23cf arch/x86/kvm/x86.c Paolo Bonzini 2017-03-27 5230 r = -ENOTTY; 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 5231 } 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 5232 out: 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 5233 return r; 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 5234 } 1fe779f8eccd16 drivers/kvm/x86.c Carsten Otte 2007-10-29 5235 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx Intel Corporation
