From: Dave Hansen <dave.hansen@intel.com>
To: Matt Fleming <matt@console-pimps.org>, linux-efi@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, Alan Cox <alan@lxorguk.ukuu.org.uk>,
Matt Fleming <matt.fleming@intel.com>,
Matthew Garrett <mjg59@srcf.ucam.org>,
Borislav Petkov <bp@suse.de>
Subject: Re: [PATCH] x86/efi: Only pass mapped RAM regions to free_bootmem_late()
Date: Thu, 05 Jun 2014 07:43:44 -0700 [thread overview]
Message-ID: <53908220.4030208@intel.com> (raw)
In-Reply-To: <1401974854-7716-1-git-send-email-matt@console-pimps.org>
On 06/05/2014 06:27 AM, Matt Fleming wrote:
> free_bootmem_late() expects to only be passed RAM regions that the
> kernel can access, and that have a corresponding 'struct page'. It's
> possible for regions in the EFI memory map to reside in address ranges
> for which pfn_to_page() doesn't work, for instance when running on an
> i386 system with CONFIG_HIGHMEM=n.
FWIW, I think there are also a bunch of ways to hit this if someone uses
mem=, even on 64-bit.
next prev parent reply other threads:[~2014-06-05 14:44 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-05 13:27 [PATCH] x86/efi: Only pass mapped RAM regions to free_bootmem_late() Matt Fleming
2014-06-05 14:43 ` Dave Hansen [this message]
2014-06-05 15:01 ` Alan Cox
2014-06-05 18:07 ` Matt Fleming
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=53908220.4030208@intel.com \
--to=dave.hansen@intel.com \
--cc=alan@lxorguk.ukuu.org.uk \
--cc=bp@suse.de \
--cc=linux-efi@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=matt.fleming@intel.com \
--cc=matt@console-pimps.org \
--cc=mjg59@srcf.ucam.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox