From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zhang Yanfei Subject: [PATCH] [RESEND] x86/kexec: crash_vmclear_local_vmcss needs __rcu Date: Tue, 11 Dec 2012 17:11:34 +0800 Message-ID: <50C6F8C6.9000008@cn.fujitsu.com> References: <50C18168.305@cn.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: "kvm@vger.kernel.org" , "kexec@lists.infradead.org" , "linux-kernel@vger.kernel.org" , kbuild test robot To: "Eric W. Biederman" , Gleb Natapov Return-path: In-Reply-To: <50C18168.305@cn.fujitsu.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org This removes the sparse warning: arch/x86/kernel/crash.c:49:32: sparse: incompatible types in comparison expression (different address spaces) Reported-by: kbuild test robot Signed-off-by: Zhang Yanfei --- arch/x86/include/asm/kexec.h | 3 ++- arch/x86/kernel/crash.c | 4 ++-- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/x86/include/asm/kexec.h b/arch/x86/include/asm/kexec.h index 28feeba..6080d26 100644 --- a/arch/x86/include/asm/kexec.h +++ b/arch/x86/include/asm/kexec.h @@ -163,7 +163,8 @@ struct kimage_arch { }; #endif -extern void (*crash_vmclear_loaded_vmcss)(void); +typedef void crash_vmclear_fn(void); +extern crash_vmclear_fn __rcu *crash_vmclear_loaded_vmcss; #endif /* __ASSEMBLY__ */ diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c index 2f6b8e8..74467fe 100644 --- a/arch/x86/kernel/crash.c +++ b/arch/x86/kernel/crash.c @@ -38,12 +38,12 @@ int in_crash_kexec; * * protected by rcu. */ -void (*crash_vmclear_loaded_vmcss)(void) = NULL; +crash_vmclear_fn __rcu *crash_vmclear_loaded_vmcss = NULL; EXPORT_SYMBOL_GPL(crash_vmclear_loaded_vmcss); static inline void cpu_crash_vmclear_loaded_vmcss(void) { - void (*do_vmclear_operation)(void) = NULL; + crash_vmclear_fn *do_vmclear_operation = NULL; rcu_read_lock(); do_vmclear_operation = rcu_dereference(crash_vmclear_loaded_vmcss); -- 1.7.1