From: kbuild test robot <lkp@intel.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: kbuild-all@01.org, linux-kernel@vger.kernel.org,
kvm@vger.kernel.org, Longpeng <longpeng2@huawei.com>,
Huangweidong <weidong.huang@huawei.com>,
Gonglei <arei.gonglei@huawei.com>,
wangxin <wangxinxin.wang@huawei.com>,
"Radim Krčmář" <rkrcmar@redhat.com>
Subject: Re: [PATCH 2/4] KVM: VMX: avoid double list add with VT-d posted interrupts
Date: Wed, 7 Jun 2017 05:49:44 +0800 [thread overview]
Message-ID: <201706070544.Kv82QQB8%fengguang.wu@intel.com> (raw)
In-Reply-To: <20170606105707.23207-3-pbonzini@redhat.com>
[-- Attachment #1: Type: text/plain, Size: 8147 bytes --]
Hi Paolo,
[auto build test ERROR on kvm/linux-next]
[also build test ERROR on v4.12-rc4 next-20170606]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Paolo-Bonzini/VT-d-PI-fixes/20170607-042637
base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next
config: i386-randconfig-x012-201723 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
All errors (new ones prefixed by >>):
In file included from arch/x86/include/asm/atomic.h:7:0,
from include/linux/atomic.h:4,
from include/linux/mm_types_task.h:12,
from include/linux/mm_types.h:4,
from arch/x86//kvm/irq.h:25,
from arch/x86//kvm/vmx.c:19:
arch/x86//kvm/vmx.c: In function '__pi_post_block':
arch/x86/include/asm/cmpxchg.h:129:2: warning: '__ret' is used uninitialized in this function [-Wuninitialized]
__ret; \
^~~~~
arch/x86/include/asm/cmpxchg.h:86:21: note: '__ret' was declared here
__typeof__(*(ptr)) __ret; \
^
arch/x86/include/asm/cmpxchg.h:133:2: note: in expansion of macro '__raw_cmpxchg'
__raw_cmpxchg((ptr), (old), (new), (size), LOCK_PREFIX)
^~~~~~~~~~~~~
arch/x86/include/asm/cmpxchg.h:148:2: note: in expansion of macro '__cmpxchg'
__cmpxchg(ptr, old, new, sizeof(*(ptr)))
^~~~~~~~~
arch/x86//kvm/vmx.c:11243:11: note: in expansion of macro 'cmpxchg'
} while (cmpxchg(&pi_desc->control, old.control,
^~~~~~~
In function '__pi_post_block',
inlined from 'pi_post_block' at arch/x86//kvm/vmx.c:11342:2,
inlined from 'vmx_post_block' at arch/x86//kvm/vmx.c:11351:2:
>> arch/x86/include/asm/cmpxchg.h:127:3: error: call to '__cmpxchg_wrong_size' declared with attribute error: Bad argument size for cmpxchg
__cmpxchg_wrong_size(); \
^~~~~~~~~~~~~~~~~~~~~~
arch/x86/include/asm/cmpxchg.h:133:2: note: in expansion of macro '__raw_cmpxchg'
__raw_cmpxchg((ptr), (old), (new), (size), LOCK_PREFIX)
^~~~~~~~~~~~~
arch/x86/include/asm/cmpxchg.h:148:2: note: in expansion of macro '__cmpxchg'
__cmpxchg(ptr, old, new, sizeof(*(ptr)))
^~~~~~~~~
arch/x86//kvm/vmx.c:11243:11: note: in expansion of macro 'cmpxchg'
} while (cmpxchg(&pi_desc->control, old.control,
^~~~~~~
--
In file included from arch/x86/include/asm/atomic.h:7:0,
from include/linux/atomic.h:4,
from include/linux/mm_types_task.h:12,
from include/linux/mm_types.h:4,
from arch/x86/kvm/irq.h:25,
from arch/x86/kvm/vmx.c:19:
arch/x86/kvm/vmx.c: In function '__pi_post_block':
arch/x86/include/asm/cmpxchg.h:129:2: warning: '__ret' is used uninitialized in this function [-Wuninitialized]
__ret; \
^~~~~
arch/x86/include/asm/cmpxchg.h:86:21: note: '__ret' was declared here
__typeof__(*(ptr)) __ret; \
^
arch/x86/include/asm/cmpxchg.h:133:2: note: in expansion of macro '__raw_cmpxchg'
__raw_cmpxchg((ptr), (old), (new), (size), LOCK_PREFIX)
^~~~~~~~~~~~~
arch/x86/include/asm/cmpxchg.h:148:2: note: in expansion of macro '__cmpxchg'
__cmpxchg(ptr, old, new, sizeof(*(ptr)))
^~~~~~~~~
arch/x86/kvm/vmx.c:11243:11: note: in expansion of macro 'cmpxchg'
} while (cmpxchg(&pi_desc->control, old.control,
^~~~~~~
In function '__pi_post_block',
inlined from 'pi_post_block' at arch/x86/kvm/vmx.c:11342:2,
inlined from 'vmx_post_block' at arch/x86/kvm/vmx.c:11351:2:
>> arch/x86/include/asm/cmpxchg.h:127:3: error: call to '__cmpxchg_wrong_size' declared with attribute error: Bad argument size for cmpxchg
__cmpxchg_wrong_size(); \
^~~~~~~~~~~~~~~~~~~~~~
arch/x86/include/asm/cmpxchg.h:133:2: note: in expansion of macro '__raw_cmpxchg'
__raw_cmpxchg((ptr), (old), (new), (size), LOCK_PREFIX)
^~~~~~~~~~~~~
arch/x86/include/asm/cmpxchg.h:148:2: note: in expansion of macro '__cmpxchg'
__cmpxchg(ptr, old, new, sizeof(*(ptr)))
^~~~~~~~~
arch/x86/kvm/vmx.c:11243:11: note: in expansion of macro 'cmpxchg'
} while (cmpxchg(&pi_desc->control, old.control,
^~~~~~~
vim +/__cmpxchg_wrong_size +127 arch/x86/include/asm/cmpxchg.h
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 121 : "=a" (__ret), "+m" (*__ptr) \
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 122 : "r" (__new), "0" (__old) \
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 123 : "memory"); \
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 124 break; \
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 125 } \
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 126 default: \
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 @127 __cmpxchg_wrong_size(); \
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 128 } \
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 129 __ret; \
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 130 })
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 131
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 132 #define __cmpxchg(ptr, old, new, size) \
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 133 __raw_cmpxchg((ptr), (old), (new), (size), LOCK_PREFIX)
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 134
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 135 #define __sync_cmpxchg(ptr, old, new, size) \
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 136 __raw_cmpxchg((ptr), (old), (new), (size), "lock; ")
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 137
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 138 #define __cmpxchg_local(ptr, old, new, size) \
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 139 __raw_cmpxchg((ptr), (old), (new), (size), "")
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 140
96a388de include/asm-x86/cmpxchg.h Thomas Gleixner 2007-10-11 141 #ifdef CONFIG_X86_32
a1ce3928 arch/x86/include/asm/cmpxchg.h David Howells 2012-10-02 142 # include <asm/cmpxchg_32.h>
96a388de include/asm-x86/cmpxchg.h Thomas Gleixner 2007-10-11 143 #else
a1ce3928 arch/x86/include/asm/cmpxchg.h David Howells 2012-10-02 144 # include <asm/cmpxchg_64.h>
96a388de include/asm-x86/cmpxchg.h Thomas Gleixner 2007-10-11 145 #endif
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 146
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 147 #define cmpxchg(ptr, old, new) \
fc395b92 arch/x86/include/asm/cmpxchg.h Jan Beulich 2012-01-26 @148 __cmpxchg(ptr, old, new, sizeof(*(ptr)))
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 149
e9826380 arch/x86/include/asm/cmpxchg.h Jeremy Fitzhardinge 2011-08-18 150 #define sync_cmpxchg(ptr, old, new) \
fc395b92 arch/x86/include/asm/cmpxchg.h Jan Beulich 2012-01-26 151 __sync_cmpxchg(ptr, old, new, sizeof(*(ptr)))
:::::: The code at line 127 was first introduced by commit
:::::: e9826380d83d1bda3ee5663bf3fa4667a6fbe60a x86, cmpxchg: Unify cmpxchg into cmpxchg.h
:::::: TO: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
:::::: CC: H. Peter Anvin <hpa@linux.intel.com>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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next prev parent reply other threads:[~2017-06-06 21:50 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-06 10:57 [PATCH CFT 0/4] VT-d PI fixes Paolo Bonzini
2017-06-06 10:57 ` [PATCH 1/4] KVM: VMX: extract __pi_post_block Paolo Bonzini
2017-06-06 21:27 ` kbuild test robot
2017-06-06 10:57 ` [PATCH 2/4] KVM: VMX: avoid double list add with VT-d posted interrupts Paolo Bonzini
2017-06-06 12:30 ` Longpeng (Mike)
2017-06-06 12:35 ` Paolo Bonzini
2017-06-06 12:45 ` Longpeng (Mike)
2017-06-06 21:49 ` kbuild test robot [this message]
2017-06-08 6:50 ` Peter Xu
2017-06-08 6:53 ` Peter Xu
2017-06-08 7:00 ` Paolo Bonzini
2017-06-08 9:16 ` Peter Xu
2017-06-08 11:24 ` Paolo Bonzini
2017-06-09 2:50 ` Peter Xu
2017-06-09 7:29 ` Paolo Bonzini
2017-06-09 7:41 ` Peter Xu
2017-07-28 2:31 ` Longpeng (Mike)
2017-07-28 6:28 ` Paolo Bonzini
2017-06-06 10:57 ` [PATCH 3/4] KVM: VMX: simplify and fix vmx_vcpu_pi_load Paolo Bonzini
2017-07-28 4:22 ` Longpeng (Mike)
2017-07-28 5:14 ` Longpeng (Mike)
2017-06-06 10:57 ` [PATCH 4/4] KVM: VMX: simplify cmpxchg of PI descriptor control field Paolo Bonzini
2017-06-07 9:33 ` [PATCH CFT 0/4] VT-d PI fixes Gonglei (Arei)
2017-06-07 14:32 ` Paolo Bonzini
2017-07-11 8:55 ` Paolo Bonzini
2017-07-11 9:16 ` Gonglei (Arei)
2017-09-21 8:23 ` Longpeng (Mike)
2017-09-21 9:42 ` Paolo Bonzini
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