Re: [PATCHv8 00/12] Contiguous Memory Allocator

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From: MichaÅ Nazarewicz

Subject: Re: [PATCHv8 00/12] Contiguous Memory Allocator

Date: Tuesday, January 4, 2011 - 9:59 am

> Russell King wrote:
quoted text>> Has anyone addressed my issue with it that this is wide-open for
>> abuse by allocating large chunks of memory, and then remapping
>> them in some way with different attributes, thereby violating the
>> ARM architecture specification?

2011/1/4 Johan MOSSBERG <johan.xx.mossberg@stericsson.com>:
quoted text> Where in the specification (preferably ARMv7) can I find
> information about this? Is the problem that it is simply
> forbidden to map an address multiple times with different cache
> setting and if this is done the hardware might start failing? Or
> is the problem that having an address mapped cached means that
> speculative pre-fetch can read it into the cache at any time,
> possibly causing problems if an un-cached mapping exists?

IIRC both apply.
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Messages in current thread:

[PATCHv8 00/12] Contiguous Memory Allocator, Michal Nazarewicz, (Wed Dec 15, 1:34 pm)

Re: [PATCHv8 00/12] Contiguous Memory Allocator, Kyungmin Park, (Thu Dec 23, 2:30 am)

Re: [PATCHv8 00/12] Contiguous Memory Allocator, Russell King - ARM Linux, (Thu Dec 23, 3:06 am)

RE: [PATCHv8 00/12] Contiguous Memory Allocator, Marek Szyprowski, (Thu Dec 23, 3:58 am)

Re: [PATCHv8 00/12] Contiguous Memory Allocator, Russell King - ARM Linux, (Thu Dec 23, 5:19 am)

RE: [PATCHv8 00/12] Contiguous Memory Allocator, Marek Szyprowski, (Thu Dec 23, 6:09 am)

Re: [PATCHv8 00/12] Contiguous Memory Allocator, Tomasz Fujak, (Thu Dec 23, 6:35 am)

Re: [PATCHv8 00/12] Contiguous Memory Allocator, Michal Nazarewicz, (Thu Dec 23, 6:41 am)

Re: [PATCHv8 00/12] Contiguous Memory Allocator, Russell King - ARM Linux, (Thu Dec 23, 6:44 am)

Re: [PATCHv8 00/12] Contiguous Memory Allocator, Russell King - ARM Linux, (Thu Dec 23, 6:48 am)

Re: [PATCHv8 00/12] Contiguous Memory Allocator, Russell King - ARM Linux, (Thu Dec 23, 6:51 am)

Re: [PATCHv8 00/12] Contiguous Memory Allocator, Tomasz Fujak, (Thu Dec 23, 7:04 am)

Re: [PATCHv8 00/12] Contiguous Memory Allocator, Tomasz Fujak, (Thu Dec 23, 7:08 am)

Re: [PATCHv8 00/12] Contiguous Memory Allocator, Russell King - ARM Linux, (Thu Dec 23, 7:16 am)

Re: [PATCHv8 00/12] Contiguous Memory Allocator, Russell King - ARM Linux, (Thu Dec 23, 7:20 am)

Re: [PATCHv8 00/12] Contiguous Memory Allocator, Felipe Contreras, (Thu Dec 23, 7:42 am)

Re: [PATCHv8 00/12] Contiguous Memory Allocator, Michal Nazarewicz, (Thu Dec 23, 8:02 am)

Re: [PATCHv8 00/12] Contiguous Memory Allocator, Tomasz Fujak, (Thu Dec 23, 8:35 am)

Re: [PATCHv8 00/12] Contiguous Memory Allocator, David Brown, (Thu Dec 23, 11:04 am)

RE: [PATCHv8 00/12] Contiguous Memory Allocator, Johan MOSSBERG, (Tue Jan 4, 9:23 am)

Re: [PATCHv8 00/12] Contiguous Memory Allocator, MichaÅ Nazarewicz, (Tue Jan 4, 9:59 am)

Re: [PATCHv8 00/12] Contiguous Memory Allocator, Russell King - ARM Linux, (Tue Jan 4, 10:19 am)

RE: [PATCHv8 00/12] Contiguous Memory Allocator, Santosh Shilimkar, (Tue Jan 4, 10:31 am)


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