Messages in this thread |  | | | Date | Wed, 16 May 2012 15:25:17 -0700 | | Subject | Re: [PATCH 4/6] pstore/ram: Add some more documentation and examples | | From | Colin Cross <> |
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On Wed, May 16, 2012 at 3:11 PM, Anton Vorontsov <cbouatmailru@gmail.com> wrote: > On Wed, May 16, 2012 at 10:56:09AM -0700, Colin Cross wrote: > [...] >> > +You can specify either RAM memory or peripheral devices' memory. However, when >> > +specifying RAM, be sure to reserve the memory by issuing memblock_reserve() >> > +very early in the architecture code, just before platform device registration, >> >> Just before platform device registration is way too late. ARM >> provides a machine reserve callback to allow board files to call >> memblock_reserve inside arm_memblock_init() and before mm_init(). > > Yeah, and I guess that 'too late' is also true for all architectures, > the platform_device_register and friends are most probably unusable > before mm_init, and after that it's always too late. > > So the word 'just' is misleading indeed, I'll remove it.
I think any reference to the time when platform devices are registered is misleading. There is a very specific point during arch init where memblock_reserve is valid, and it is nowhere near platform device registration. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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