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From: Borislav Petkov <bp@alien8.de>
To: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: KVM build warnings
Date: Mon, 30 May 2011 11:46:04 +0200	[thread overview]
Message-ID: <20110530094604.GC21833@liondog.tnic> (raw)

I get the following

In file included from arch/x86/kvm/mmu.c:2856:
arch/x86/kvm/paging_tmpl.h: In function ‘paging32_walk_addr_generic’:
arch/x86/kvm/paging_tmpl.h:124: warning: ‘ptep_user’ may be used uninitialized in this function
In file included from arch/x86/kvm/mmu.c:2852:
arch/x86/kvm/paging_tmpl.h: In function ‘paging64_walk_addr_generic’:
arch/x86/kvm/paging_tmpl.h:124: warning: ‘ptep_user’ may be used uninitialized in this function

when building -rc1. It looks like it is caused by
6e2ca7d1802bf8ed9908435e34daa116662e7790 and sticking uninitialized_var() around
the ptep_user declaration looks like the easiest solution. But the code should
still be audited by someone who's familiar with it whether shutting up the
compiler doesn't cause an actual bug.

Thanks.

-- 
Regards/Gruss,
    Boris.

             reply	other threads:[~2011-05-30  9:46 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-30  9:46 Borislav Petkov [this message]
2011-05-30 10:14 ` KVM build warnings Takuya Yoshikawa
2011-05-30 12:46   ` Borislav Petkov
2011-05-30 20:11     ` [PATCH] kvm: Fix " Borislav Petkov
2011-05-31  7:38       ` Ingo Molnar
2011-05-31  8:19         ` Takuya Yoshikawa
2011-05-31  8:20         ` Avi Kivity
2011-05-31  9:02           ` Borislav Petkov
2011-05-31 10:26           ` Ingo Molnar
2011-06-07  7:28             ` Borislav Petkov
2011-06-07  7:58               ` Avi Kivity

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