From: Matt Fleming <matt-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org>
To: Ard Biesheuvel <ard.biesheuvel-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Cc: "linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
Catalin Marinas <catalin.marinas-5wv7dgnIgG8@public.gmane.org>,
Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
"linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Leif Lindholm
<leif.lindholm-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
Alexander Kuleshov
<kuleshovmail-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
"linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org"
<linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org>,
Ryan Harkin <ryan.harkin-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Grant Likely
<grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Roy Franz <roy.franz-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Mark Salter <msalter-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Subject: Re: [PATCH v3 13/13] ARM: add UEFI stub support
Date: Fri, 27 Nov 2015 21:21:55 +0000 [thread overview]
Message-ID: <20151127212155.GC13918@codeblueprint.co.uk> (raw)
In-Reply-To: <CAKv+Gu_RC5qG=BGPSEf=j7AV4SbjXELjBxmcboj1oVs-Dn87qw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On Fri, 27 Nov, at 10:38:05AM, Ard Biesheuvel wrote:
>
> Actually, it is the reservation done a bit earlier that could
> potentially end up at 0x0, and the [compressed] kernel is always at
> least 32 MB up in memory, so that it can be decompressed as close to
> the base of DRAM as possible.
>
> As far as I can tell, efi_free() deals correctly with allocations at
> address 0x0, and that is the only dealing we have with the
> reservation. So I don't think there is an issue here.
OK, great.
WARNING: multiple messages have this Message-ID (diff)
From: matt@codeblueprint.co.uk (Matt Fleming)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 13/13] ARM: add UEFI stub support
Date: Fri, 27 Nov 2015 21:21:55 +0000 [thread overview]
Message-ID: <20151127212155.GC13918@codeblueprint.co.uk> (raw)
In-Reply-To: <CAKv+Gu_RC5qG=BGPSEf=j7AV4SbjXELjBxmcboj1oVs-Dn87qw@mail.gmail.com>
On Fri, 27 Nov, at 10:38:05AM, Ard Biesheuvel wrote:
>
> Actually, it is the reservation done a bit earlier that could
> potentially end up at 0x0, and the [compressed] kernel is always at
> least 32 MB up in memory, so that it can be decompressed as close to
> the base of DRAM as possible.
>
> As far as I can tell, efi_free() deals correctly with allocations at
> address 0x0, and that is the only dealing we have with the
> reservation. So I don't think there is an issue here.
OK, great.
WARNING: multiple messages have this Message-ID (diff)
From: Matt Fleming <matt@codeblueprint.co.uk>
To: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: "linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
"linux-efi@vger.kernel.org" <linux-efi@vger.kernel.org>,
Leif Lindholm <leif.lindholm@linaro.org>,
Andrew Morton <akpm@linux-foundation.org>,
Alexander Kuleshov <kuleshovmail@gmail.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
Ryan Harkin <ryan.harkin@linaro.org>,
Grant Likely <grant.likely@linaro.org>,
Roy Franz <roy.franz@linaro.org>,
Mark Salter <msalter@redhat.com>
Subject: Re: [PATCH v3 13/13] ARM: add UEFI stub support
Date: Fri, 27 Nov 2015 21:21:55 +0000 [thread overview]
Message-ID: <20151127212155.GC13918@codeblueprint.co.uk> (raw)
In-Reply-To: <CAKv+Gu_RC5qG=BGPSEf=j7AV4SbjXELjBxmcboj1oVs-Dn87qw@mail.gmail.com>
On Fri, 27 Nov, at 10:38:05AM, Ard Biesheuvel wrote:
>
> Actually, it is the reservation done a bit earlier that could
> potentially end up at 0x0, and the [compressed] kernel is always at
> least 32 MB up in memory, so that it can be decompressed as close to
> the base of DRAM as possible.
>
> As far as I can tell, efi_free() deals correctly with allocations at
> address 0x0, and that is the only dealing we have with the
> reservation. So I don't think there is an issue here.
OK, great.
--
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next prev parent reply other threads:[~2015-11-27 21:21 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-23 9:06 [PATCH v3 00/13] UEFI boot and runtime services support for 32-bit ARM Ard Biesheuvel
2015-11-23 9:06 ` Ard Biesheuvel
2015-11-23 9:06 ` Ard Biesheuvel
2015-11-23 9:06 ` [PATCH v3 01/13] mm/memblock: add MEMBLOCK_NOMAP attribute to memblock memory table Ard Biesheuvel
2015-11-23 9:06 ` Ard Biesheuvel
2015-11-23 9:06 ` [PATCH v3 02/13] arm64: only consider memblocks with NOMAP cleared for linear mapping Ard Biesheuvel
2015-11-23 9:06 ` Ard Biesheuvel
2015-11-23 9:06 ` [PATCH v3 04/13] arm64/efi: split off EFI init and runtime code for reuse by 32-bit ARM Ard Biesheuvel
2015-11-23 9:06 ` Ard Biesheuvel
[not found] ` <1448269593-20758-1-git-send-email-ard.biesheuvel-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-11-23 9:06 ` [PATCH v3 03/13] arm64/efi: mark UEFI reserved regions as MEMBLOCK_NOMAP Ard Biesheuvel
2015-11-23 9:06 ` Ard Biesheuvel
2015-11-23 9:06 ` Ard Biesheuvel
2015-11-23 9:06 ` [PATCH v3 05/13] arm64/efi: refactor EFI init and runtime code for reuse by 32-bit ARM Ard Biesheuvel
2015-11-23 9:06 ` Ard Biesheuvel
2015-11-23 9:06 ` Ard Biesheuvel
2015-11-23 9:06 ` [PATCH v3 06/13] ARM: add support for generic early_ioremap/early_memremap Ard Biesheuvel
2015-11-23 9:06 ` Ard Biesheuvel
2015-11-23 9:06 ` Ard Biesheuvel
2015-11-23 9:06 ` [PATCH v3 09/13] ARM: add support for non-global kernel mappings Ard Biesheuvel
2015-11-23 9:06 ` Ard Biesheuvel
2015-11-23 9:06 ` Ard Biesheuvel
2015-11-23 9:06 ` [PATCH v3 12/13] ARM: wire up UEFI init and runtime support Ard Biesheuvel
2015-11-23 9:06 ` Ard Biesheuvel
2015-11-23 9:06 ` Ard Biesheuvel
2015-11-27 21:25 ` [PATCH v3 00/13] UEFI boot and runtime services support for 32-bit ARM Matt Fleming
2015-11-27 21:25 ` Matt Fleming
2015-11-27 21:25 ` Matt Fleming
2015-11-23 9:06 ` [PATCH v3 07/13] ARM: split off core mapping logic from create_mapping Ard Biesheuvel
2015-11-23 9:06 ` Ard Biesheuvel
2015-11-23 9:06 ` [PATCH v3 08/13] ARM: factor out allocation routine from __create_mapping() Ard Biesheuvel
2015-11-23 9:06 ` Ard Biesheuvel
2015-11-23 9:06 ` [PATCH v3 10/13] ARM: implement create_mapping_late() for EFI use Ard Biesheuvel
2015-11-23 9:06 ` Ard Biesheuvel
2015-11-23 9:06 ` [PATCH v3 11/13] ARM: only consider memblocks with NOMAP cleared for linear mapping Ard Biesheuvel
2015-11-23 9:06 ` Ard Biesheuvel
2015-11-23 9:06 ` [PATCH v3 13/13] ARM: add UEFI stub support Ard Biesheuvel
2015-11-23 9:06 ` Ard Biesheuvel
[not found] ` <1448269593-20758-14-git-send-email-ard.biesheuvel-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-11-26 10:47 ` Matt Fleming
2015-11-26 10:47 ` Matt Fleming
2015-11-26 10:47 ` Matt Fleming
[not found] ` <20151126104711.GH2765-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org>
2015-11-27 9:38 ` Ard Biesheuvel
2015-11-27 9:38 ` Ard Biesheuvel
2015-11-27 9:38 ` Ard Biesheuvel
[not found] ` <CAKv+Gu_RC5qG=BGPSEf=j7AV4SbjXELjBxmcboj1oVs-Dn87qw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-11-27 21:21 ` Matt Fleming [this message]
2015-11-27 21:21 ` Matt Fleming
2015-11-27 21:21 ` Matt Fleming
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