linux-kernel - Re: [tip:core/efi] efi: Add "efi_fake

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Message-ID: <20151021110807.GA17463@gmail.com>
Date:	Wed, 21 Oct 2015 13:08:07 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	ard.biesheuvel@...aro.org, qiuxishi@...wei.com,
	matt.fleming@...el.com, hpa@...or.com, tglx@...utronix.de,
	tony.luck@...el.com, kamezawa.hiroyu@...fujitsu.com,
	izumi.taku@...fujitsu.com, linux-kernel@...r.kernel.org
Cc:	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:core/efi] efi: Add "efi_fake_mem" boot option


* tip-bot for Taku Izumi <tipbot@...or.com> wrote:

> Commit-ID:  0f96a99dab366333439e110d6ad253bc7c557c09
> Gitweb:     http://git.kernel.org/tip/0f96a99dab366333439e110d6ad253bc7c557c09
> Author:     Taku Izumi <izumi.taku@...fujitsu.com>
> AuthorDate: Wed, 30 Sep 2015 23:01:56 +0900
> Committer:  Matt Fleming <matt.fleming@...el.com>
> CommitDate: Mon, 12 Oct 2015 14:20:09 +0100
> 
> efi: Add "efi_fake_mem" boot option

So this commit started generating the following new build warning on x86 32-bit 
allyesconfig and allmodconfig builds:

drivers/firmware/efi/fake_mem.c:186:20: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]

Which comes from:

        u64 new_memmap_phy;

	...

        memmap.phys_map = (void *)new_memmap_phy;

While efi_memory_map has a 32-bit pointer:

struct efi_memory_map {
        void *phys_map;
        void *map;
        void *map_end;
        int nr_map;
        unsigned long desc_version;
        unsigned long desc_size;
};

Thanks,

	Ingo
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