linux-kernel - Re: [PATCH v7 2/2] ARM hibernation / suspend-to-disk

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Date:	Wed, 16 Apr 2014 11:12:43 +0100
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Sebastian Capella <sebastian.capella@...aro.org>
Cc:	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
	linaro-kernel@...ts.linaro.org,
	linux-arm-kernel@...ts.infradead.org, Russ Dill <Russ.Dill@...com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Len Brown <len.brown@...el.com>,
	Nicolas Pitre <nico@...aro.org>,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	Will Deacon <will.deacon@....com>,
	Jonathan Austin <jonathan.austin@....com>,
	Catalin Marinas <catalin.marinas@....com>,
	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Laura Abbott <lauraa@...eaurora.org>,
	Jiang Liu <liuj97@...il.com>, Sricharan R <r.sricharan@...com>,
	Victor Kamensky <victor.kamensky@...aro.org>,
	Stefano Stabellini <stefano.stabellini@...citrix.com>,
	Ben Dooks <ben.dooks@...ethink.co.uk>
Subject: Re: [PATCH v7 2/2] ARM hibernation / suspend-to-disk

On Wed, Mar 05, 2014 at 02:50:05AM -0800, Sebastian Capella wrote:
> diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
> index 8756e4b..d32adbb 100644
> --- a/arch/arm/include/asm/memory.h
> +++ b/arch/arm/include/asm/memory.h
> @@ -291,6 +291,7 @@ static inline void *phys_to_virt(phys_addr_t x)
>   */
>  #define __pa(x)			__virt_to_phys((unsigned long)(x))
>  #define __va(x)			((void *)__phys_to_virt((phys_addr_t)(x)))
> +#define __pa_symbol(x)		__pa((unsigned long)(x))
>  #define pfn_to_kaddr(pfn)	__va((pfn) << PAGE_SHIFT)

I don't see the appropriate version on the mailing list, so I'll comment
here instead.  In 8011/1, you added here:

+#define virt_to_pfn(kaddr)      (__pa(kaddr) >> PAGE_SHIFT)

which conflicts with my solution (which fixes some rather horrid assembly
code).  You can find my change as e26a9e00afc4 (ARM: Better virt_to_page()
handling).  I can drop this from your patch, but it would be a good idea
if you could re-validate against v3.15-rc1.

Thanks.

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