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, lkml@tlinx.org,
Andrew Morton <akpm@linux-foundation.org>,
Michal Marek <mmarek@suse.cz>,
stable@vger.kernel.org
Subject: Re: [PATCH] compiler-gcc: disable -ftracer for __noclone functions
Date: Thu, 31 Mar 2016 16:39:38 +0800 [thread overview]
Message-ID: <201603311657.a9YmF6yj%fengguang.wu@intel.com> (raw)
In-Reply-To: <1459410252-15531-1-git-send-email-pbonzini@redhat.com>
Hi Paolo,
[auto build test WARNING on v4.6-rc1]
[also build test WARNING on next-20160331]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]
url: https://github.com/0day-ci/linux/commits/Paolo-Bonzini/compiler-gcc-disable-ftracer-for-__noclone-functions/20160331-154556
reproduce:
# apt-get install sparse
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__
sparse warnings: (new ones prefixed by >>)
include/linux/compiler.h:232:8: sparse: attribute 'no_sanitize_address': unknown attribute
>> arch/x86/kvm/vmx.c:8610:13: sparse: attribute '__optimize__': unknown attribute
vim +/__optimize__ +8610 arch/x86/kvm/vmx.c
d7cd9796 arch/x86/kvm/vmx.c Gleb Natapov 2011-10-05 8594 int i, nr_msrs;
d7cd9796 arch/x86/kvm/vmx.c Gleb Natapov 2011-10-05 8595 struct perf_guest_switch_msr *msrs;
d7cd9796 arch/x86/kvm/vmx.c Gleb Natapov 2011-10-05 8596
d7cd9796 arch/x86/kvm/vmx.c Gleb Natapov 2011-10-05 8597 msrs = perf_guest_get_msrs(&nr_msrs);
d7cd9796 arch/x86/kvm/vmx.c Gleb Natapov 2011-10-05 8598
d7cd9796 arch/x86/kvm/vmx.c Gleb Natapov 2011-10-05 8599 if (!msrs)
d7cd9796 arch/x86/kvm/vmx.c Gleb Natapov 2011-10-05 8600 return;
d7cd9796 arch/x86/kvm/vmx.c Gleb Natapov 2011-10-05 8601
d7cd9796 arch/x86/kvm/vmx.c Gleb Natapov 2011-10-05 8602 for (i = 0; i < nr_msrs; i++)
d7cd9796 arch/x86/kvm/vmx.c Gleb Natapov 2011-10-05 8603 if (msrs[i].host == msrs[i].guest)
d7cd9796 arch/x86/kvm/vmx.c Gleb Natapov 2011-10-05 8604 clear_atomic_switch_msr(vmx, msrs[i].msr);
d7cd9796 arch/x86/kvm/vmx.c Gleb Natapov 2011-10-05 8605 else
d7cd9796 arch/x86/kvm/vmx.c Gleb Natapov 2011-10-05 8606 add_atomic_switch_msr(vmx, msrs[i].msr, msrs[i].guest,
d7cd9796 arch/x86/kvm/vmx.c Gleb Natapov 2011-10-05 8607 msrs[i].host);
d7cd9796 arch/x86/kvm/vmx.c Gleb Natapov 2011-10-05 8608 }
d7cd9796 arch/x86/kvm/vmx.c Gleb Natapov 2011-10-05 8609
a3b5ba49 arch/x86/kvm/vmx.c Lai Jiangshan 2011-02-11 @8610 static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu)
6aa8b732 drivers/kvm/vmx.c Avi Kivity 2006-12-10 8611 {
a2fa3e9f drivers/kvm/vmx.c Gregory Haskins 2007-07-27 8612 struct vcpu_vmx *vmx = to_vmx(vcpu);
d974baa3 arch/x86/kvm/vmx.c Andy Lutomirski 2014-10-08 8613 unsigned long debugctlmsr, cr4;
104f226b arch/x86/kvm/vmx.c Avi Kivity 2010-11-18 8614
104f226b arch/x86/kvm/vmx.c Avi Kivity 2010-11-18 8615 /* Record the guest's net vcpu time for enforced NMI injections. */
104f226b arch/x86/kvm/vmx.c Avi Kivity 2010-11-18 8616 if (unlikely(!cpu_has_virtual_nmis() && vmx->soft_vnmi_blocked))
104f226b arch/x86/kvm/vmx.c Avi Kivity 2010-11-18 8617 vmx->entry_time = ktime_get();
104f226b arch/x86/kvm/vmx.c Avi Kivity 2010-11-18 8618
:::::: The code at line 8610 was first introduced by commit
:::::: a3b5ba49a8c58d9a578e016523b047467a41e047 KVM: VMX: add the __noclone attribute to vmx_vcpu_run
:::::: TO: Lai Jiangshan <laijs@cn.fujitsu.com>
:::::: CC: Marcelo Tosatti <mtosatti@redhat.com>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
next prev parent reply other threads:[~2016-03-31 8:39 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-31 7:44 [PATCH] compiler-gcc: disable -ftracer for __noclone functions Paolo Bonzini
2016-03-31 8:39 ` kbuild test robot [this message]
2018-05-05 17:22 ` Nadav Amit
2018-05-08 17:58 ` Paolo Bonzini
2018-05-08 18:12 ` Nadav Amit
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