On 16/05/14 21:41, Daniel Kiper wrote:
> @@ -0,0 +1,374 @@
> +/*
> + * EFI support for Xen.
> + *
> + * Copyright (C) 1999 VA Linux Systems
> + * Copyright (C) 1999 Walt Drummond <[email protected]>
> + * Copyright (C) 1999-2002 Hewlett-Packard Co.
> + * David Mosberger-Tang <[email protected]>
> + * Stephane Eranian <[email protected]>
> + * Copyright (C) 2005-2008 Intel Co.
> + * Fenghua Yu <[email protected]>
> + * Bibo Mao <[email protected]>
> + * Chandramouli Narayanan <[email protected]>
> + * Huang Ying <[email protected]>
> + * Copyright (C) 2011 Novell Co.
> + * Jan Beulich <[email protected]>
> + * Copyright (C) 2011-2012 Oracle Co.
> + * Liang Tang <[email protected]>
> + * Copyright (c) 2014 Daniel Kiper, Oracle Corporation
> + */
> +
> +#include <linux/bug.h>
> +#include <linux/efi.h>
> +#include <linux/init.h>
> +#include <linux/string.h>
> +
> +#include <xen/interface/xen.h>
> +#include <xen/interface/platform.h>
> +
> +#include <asm/xen/hypercall.h>
> +
> +#define call (op.u.efi_runtime_call)
I think not.
> +#define DECLARE_CALL(what) \
> + struct xen_platform_op op; \
> + op.cmd = XENPF_efi_runtime_call; \
> + call.function = XEN_EFI_##what; \
> + call.misc = 0
Macros like this which explicitly create local variable with implicit
names are evil when reading code.
If you want to do initialisation like this, then at least do something like:
#define INIT_EFI_CALL(what) \
{ .cmd = XENPF_efi_runtime_call, \
.u.efi_runtime_call.function = XEN_EFI_##what, \
.u.efi_runtime_call.misc = 0 }
And use it as:
struct xen_platform_op op = INIT_EFI_CALL(foo);
~Andrew
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