linux-kernel - Re: [PATCH 4/7] efi: Convert efi_call_virt to efi_call_virt

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Message-ID: <20160627112255.GD1113@leverpostej>
Date:	Mon, 27 Jun 2016 12:22:56 +0100
From:	Mark Rutland <mark.rutland@....com>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Matt Fleming <matt@...eblueprint.co.uk>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H . Peter Anvin" <hpa@...or.com>,
	Alex Thorlton <athorlton@....com>,
	Ard Biesheuvel <ard.biesheuvel@...aro.org>,
	linux-kernel@...r.kernel.org, linux-efi@...r.kernel.org,
	Catalin Marinas <catalin.marinas@....com>,
	Dimitri Sivanich <sivanich@....com>,
	Ingo Molnar <mingo@...hat.com>,
	Roy Franz <roy.franz@...aro.org>, Russ Anderson <rja@....com>,
	Russell King <linux@...linux.org.uk>,
	Will Deacon <will.deacon@....com>
Subject: Re: [PATCH 4/7] efi: Convert efi_call_virt to efi_call_virt_pointer

On Mon, Jun 27, 2016 at 01:00:50PM +0200, Ingo Molnar wrote:
> 
> * Matt Fleming <matt@...eblueprint.co.uk> wrote:
> 
> > +#define efi_call_virt_pointer(p, f, args...)				\
> > +({									\
> > +	efi_status_t __s;						\
> > +	unsigned long flags;						\
> > +									\
> > +	arch_efi_call_virt_setup();					\
> > +									\
> > +	local_save_flags(flags);					\
> > +	__s = arch_efi_call_virt(p, f, args);				\
> > +	efi_call_virt_check_flags(flags, __stringify(f));		\
> > +									\
> > +	arch_efi_call_virt_teardown();					\
> > +									\
> > +	__s;								\
> > +})
> > +
> > +#define __efi_call_virt_pointer(p, f, args...)				\
> > +({									\
> > +	unsigned long flags;						\
> > +									\
> > +	arch_efi_call_virt_setup();					\
> > +									\
> > +	local_save_flags(flags);					\
> > +	arch_efi_call_virt(p, f, args);					\
> > +	efi_call_virt_check_flags(flags, __stringify(f));		\
> > +									\
> > +	arch_efi_call_virt_teardown();					\
> > +})
> 
> Note that while at it I renamed 'flags' to '__flags' because 'flags' is
> a commonly used variable name and the 'efi_status_t __s' variable was
> macro-prefixed already.
> 
> Any objections?

FWIW, none from me. I probably should have done that when I wrote the
original {__,}efi_call_virt macros.

Thanks,
Mark.