From: Vivek Goyal <vgoyal@redhat.com>
To: WANG Chao <chaowang@redhat.com>
Cc: kexec@lists.infradead.org, horms@verge.net.au, linn@hp.com,
hpa@zytor.com, dyoung@redhat.com, trenn@suse.de,
ebiederm@xmission.com
Subject: Re: [PATCH v4 0/4] kexec-tools, x86: E820 memmap pass for kdump
Date: Thu, 20 Mar 2014 11:42:28 -0400 [thread overview]
Message-ID: <20140320154228.GB29549@redhat.com> (raw)
In-Reply-To: <1395216241-13983-1-git-send-email-chaowang@redhat.com>
On Wed, Mar 19, 2014 at 04:03:57PM +0800, WANG Chao wrote:
> Hi, All
>
> When kaslr comes in and kdump is broken, it seems about the right time to use
> E820 instead of memmap=exactmap to pass memmap for kdump for the default memmap
> passing mechanism:
> http://lists.infradead.org/pipermail/kexec/2014-February/011048.html
What's the connection between kaslr and passing memory mappings in
bootparams?
To me this is completely independent of kaslr. This is moving towards
a better design to pass memory map to second kernel which in turn will
also solve the issue of too many memory ranges on large machines.
Also, could you get hold of a machine with calgary IOMMU and test that
--pass-memmap option makes those calgary machines work?
Thanks
Vivek
_______________________________________________
kexec mailing list
kexec@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/kexec
next prev parent reply other threads:[~2014-03-20 15:42 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-19 8:03 [PATCH v4 0/4] kexec-tools, x86: E820 memmap pass for kdump WANG Chao
2014-03-19 8:03 ` [PATCH v4 1/4] cleanup: add dbgprint_mem_range function WANG Chao
2014-03-20 3:49 ` Simon Horman
2014-03-19 8:03 ` [PATCH v4 2/4] x86: Store memory ranges globally used for crash kernel to boot into WANG Chao
2014-03-27 22:32 ` Vivek Goyal
2014-03-28 5:23 ` WANG Chao
2014-03-28 14:01 ` Vivek Goyal
2014-03-28 15:44 ` Thomas Renninger
2014-03-28 16:05 ` Vivek Goyal
2014-03-28 2:19 ` Dave Young
2014-03-28 5:36 ` WANG Chao
2014-03-28 3:24 ` Dave Young
2014-03-28 6:13 ` WANG Chao
2014-03-28 6:43 ` Dave Young
2014-03-28 6:51 ` Dave Young
2014-03-28 7:12 ` Dave Young
2014-04-01 7:04 ` WANG Chao
2014-04-01 8:41 ` Dave Young
2014-04-01 8:54 ` WANG Chao
2014-04-01 9:36 ` Dave Young
2014-04-01 9:52 ` WANG Chao
2014-03-19 8:04 ` [PATCH v4 3/4] x86: add --pass-memmap-cmdline option WANG Chao
2014-03-19 8:04 ` [PATCH v4 4/4] x86: Pass memory range via E820 for kdump WANG Chao
2014-03-27 22:50 ` Vivek Goyal
2014-03-28 4:52 ` WANG Chao
2014-03-28 13:53 ` Vivek Goyal
2014-03-28 3:28 ` Dave Young
2014-03-28 4:53 ` WANG Chao
2014-03-19 17:57 ` [PATCH v4 0/4] kexec-tools, x86: E820 memmap pass " Linn Crosetto
2014-03-20 3:50 ` Simon Horman
2014-03-20 5:00 ` WANG Chao
2014-03-20 15:42 ` Vivek Goyal [this message]
2014-03-27 10:31 ` WANG Chao
2014-03-27 22:23 ` Vivek Goyal
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=20140320154228.GB29549@redhat.com \
--to=vgoyal@redhat.com \
--cc=chaowang@redhat.com \
--cc=dyoung@redhat.com \
--cc=ebiederm@xmission.com \
--cc=horms@verge.net.au \
--cc=hpa@zytor.com \
--cc=kexec@lists.infradead.org \
--cc=linn@hp.com \
--cc=trenn@suse.de \
/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