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 <fengguang.wu@xxxxxxxxx> Signed-off-by: Zhang Yanfei <zhangyanfei@xxxxxxxxxxxxxx> --- arch/x86/include/asm/kexec.h | 4 +++- arch/x86/kernel/crash.c | 4 ++-- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/x86/include/asm/kexec.h b/arch/x86/include/asm/kexec.h index 28feeba..16882cd 100644 --- a/arch/x86/include/asm/kexec.h +++ b/arch/x86/include/asm/kexec.h @@ -163,7 +163,9 @@ struct kimage_arch { }; #endif -extern void (*crash_vmclear_loaded_vmcss)(void); +extern void __rcu (*crash_vmclear_loaded_vmcss)(void); +#define vmclear_func_rcu(vmclear_func) \ + ((void (*)(void)) rcu_dereference(vmclear_func)) #endif /* __ASSEMBLY__ */ diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c index 2f6b8e8..50ce1d6 100644 --- a/arch/x86/kernel/crash.c +++ b/arch/x86/kernel/crash.c @@ -38,7 +38,7 @@ int in_crash_kexec; * * protected by rcu. */ -void (*crash_vmclear_loaded_vmcss)(void) = NULL; +void __rcu (*crash_vmclear_loaded_vmcss)(void) = NULL; EXPORT_SYMBOL_GPL(crash_vmclear_loaded_vmcss); static inline void cpu_crash_vmclear_loaded_vmcss(void) @@ -46,7 +46,7 @@ static inline void cpu_crash_vmclear_loaded_vmcss(void) void (*do_vmclear_operation)(void) = NULL; rcu_read_lock(); - do_vmclear_operation = rcu_dereference(crash_vmclear_loaded_vmcss); + do_vmclear_operation = vmclear_func_rcu(crash_vmclear_loaded_vmcss); if (do_vmclear_operation) do_vmclear_operation(); rcu_read_unlock(); -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html