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Re: [Qemu-devel] [PATCH 7/9] valgrind/i386: avoid false positives on KVM
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [PATCH 7/9] valgrind/i386: avoid false positives on KVM_GET_MSRS ioctl |
Date: |
Wed, 05 Nov 2014 11:37:25 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0 |
On 05/11/2014 11:33, Paolo Bonzini wrote:
> On 30/10/2014 10:36, Christian Borntraeger wrote:
>> struct kvm_msrs contains a pad field. Lets initialize this pad
>> field. A designated initializer seems not appropriate here, as
>> struct kvm_msrs is embedded in the msr_data structure.
>>
>> Signed-off-by: Christian Borntraeger <address@hidden>
>
> What about this:
>
> msr_data.info = (struct kvm_msrs) {
> .nmsrs = n
> };
>
> ? It would also be applicable to other uses of kvm_msrs.
Also, KVM_SET_MSRS has to deal with a reserved field in struct
kvm_msr_entry. Currently you handle it with a relatively large memset
produced by the designated initializer "= {}" in kvm_put_msrs. However,
you could set it in kvm_msr_entry_set, and avoid the memset.
Paolo
> Also, you're missing one occurrence in kvm_put_msr_feature_control.