linux-kernel - Re: [PATCH 2/2] efi: Remove global 'memmap'

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Message-ID: <20160412200119.GH2829@codeblueprint.co.uk>
Date:	Tue, 12 Apr 2016 21:01:19 +0100
From:	Matt Fleming <matt@...eblueprint.co.uk>
To:	Ard Biesheuvel <ard.biesheuvel@...aro.org>
Cc:	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Tony Luck <tony.luck@...il.com>,
	"Luck, Tony" <tony.luck@...el.com>
Subject: Re: [PATCH 2/2] efi: Remove global 'memmap'

On Mon, 11 Apr, at 03:17:55PM, Ard Biesheuvel wrote:
> > diff --git a/drivers/firmware/efi/arm-runtime.c b/drivers/firmware/efi/arm-runtime.c
> > index 1cfbfaf57a2d..0416d5d33e74 100644
> > --- a/drivers/firmware/efi/arm-runtime.c
> > +++ b/drivers/firmware/efi/arm-runtime.c
> > @@ -89,6 +89,7 @@ static bool __init efi_virtmap_init(void)
> >   */
> >  static int __init arm_enable_runtime_services(void)
> >  {
> > +       phys_addr_t phys_map;
> 
> Is the sole purpose of this variable to prevent breaking the 80-column rule?
 
Indeed it is.

> If so, please be aware that I intend to propose a patch that replaces
> the ioremap_cache() below with a call to memremap(), but this is
> another change that is gated by Russell merging my memremap patches
> for ARM

OK. Would you like me to drop this particular hunk and just go with,

	efi.memmap.map = (__force void *)ioremap_cache(efi.memmap.phys_map,
						       mapsize);

if you're going to rewrite it soon anyway?