linux-kernel - Re: [PATCH v10 06/10] vmx: spp: Set up SPP paging table at vmentry/vmexit

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Message-ID: <202001010334.Qs5puXxe%lkp@intel.com>
Date:   Wed, 1 Jan 2020 04:33:29 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Yang Weijiang <weijiang.yang@...el.com>
Cc:     kbuild-all@...ts.01.org, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, pbonzini@...hat.com,
        jmattson@...gle.com, sean.j.christopherson@...el.com,
        yu.c.zhang@...ux.intel.com, alazar@...defender.com,
        edwin.zhai@...el.com, Yang Weijiang <weijiang.yang@...el.com>
Subject: Re: [PATCH v10 06/10] vmx: spp: Set up SPP paging table at
 vmentry/vmexit

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-20191219]
[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
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-129-g341daf20-dirty
        make ARCH=x86_64 allmodconfig
        make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@...el.com>


sparse warnings: (new ones prefixed by >>)

>> arch/x86/kvm/mmu/spp.c:202:5: sparse: sparse: symbol 'kvm_spp_level_pages' was not declared. Should it be static?
>> arch/x86/kvm/mmu/spp.c:419:6: sparse: sparse: symbol 'kvm_spp_flush_rmap' was not declared. Should it be static?
   arch/x86/kvm/mmu/mmu.c:4807:57: sparse: sparse: cast truncates bits from constant value (ffffff33 becomes 33)
   arch/x86/kvm/mmu/mmu.c:4809:56: sparse: sparse: cast truncates bits from constant value (ffffff0f becomes f)
   arch/x86/kvm/mmu/mmu.c:4811:57: sparse: sparse: cast truncates bits from constant value (ffffff55 becomes 55)
--
>> arch/x86/kvm/vmx/../mmu/spp.h:16:27: sparse: sparse: marked inline, but without a definition
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (110011 becomes 11)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (110011 becomes 11)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (100110 becomes 110)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (100490 becomes 490)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (100310 becomes 310)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (100510 becomes 510)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (100410 becomes 410)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (100490 becomes 490)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (100310 becomes 310)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (100510 becomes 510)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (100410 becomes 410)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (30203 becomes 203)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (30203 becomes 203)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (30283 becomes 283)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (30283 becomes 283)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1b019b becomes 19b)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1b021b becomes 21b)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1b029b becomes 29b)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1b031b becomes 31b)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1b041b becomes 41b)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (80c88 becomes c88)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (110311 becomes 311)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a081a becomes 81a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a081a becomes 81a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a081a becomes 81a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (120912 becomes 912)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (120912 becomes 912)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (120912 becomes 912)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (110311 becomes 311)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (120992 becomes 992)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (120992 becomes 992)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (100610 becomes 610)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (100690 becomes 690)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (100590 becomes 590)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (80408 becomes 408)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a039a becomes 39a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a041a becomes 41a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (120a92 becomes a92)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a099a becomes 99a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a091a becomes 91a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (a048a becomes 48a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a039a becomes 39a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a041a becomes 41a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (120a92 becomes a92)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a099a becomes 99a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a091a becomes 91a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (a048a becomes 48a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (a010a becomes 10a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (a050a becomes 50a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a071a becomes 71a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a079a becomes 79a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a009a becomes 9a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a081a becomes 81a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a081a becomes 81a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a011a becomes 11a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (180198 becomes 198)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a011a becomes 11a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a051a becomes 51a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (120392 becomes 392)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (120892 becomes 892)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a081a becomes 81a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a081a becomes 81a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a011a becomes 11a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a011a becomes 11a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (100490 becomes 490)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (100490 becomes 490)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (120892 becomes 892)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (120892 becomes 892)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (100490 becomes 490)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a001a becomes 1a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a011a becomes 11a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (a028a becomes 28a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (a030a becomes 30a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (a038a becomes 38a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (a040a becomes 40a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (a028a becomes 28a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (a030a becomes 30a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (a038a becomes 38a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (a040a becomes 40a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (100090 becomes 90)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (100090 becomes 90)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (180118 becomes 118)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a001a becomes 1a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (80688 becomes 688)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a009a becomes 9a)
>> arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (80c08 becomes c08)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (100790 becomes 790)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (100790 becomes 790)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (180198 becomes 198)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a011a becomes 11a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (120492 becomes 492)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a061a becomes 61a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (120492 becomes 492)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a061a becomes 61a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (120412 becomes 412)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a059a becomes 59a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (120412 becomes 412)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: cast truncates bits from constant value (1a059a becomes 59a)
   arch/x86/kvm/vmx/evmcs.h:80:30: sparse: sparse: too many warnings

Please review and possibly fold the followup patch.

---
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