From: Olaf Hering <olaf@aepfle.de>
To: xen-devel@lists.xensource.com
Subject: Re: [PATCH 10/17] xenpaging: update machine_to_phys_mapping[] during page-in
Date: Tue, 14 Dec 2010 23:58:37 +0100 [thread overview]
Message-ID: <20101214225837.GA27769@aepfle.de> (raw)
In-Reply-To: <20101206205911.611555011@aepfle.de>
On Mon, Dec 06, Olaf Hering wrote:
> Update the machine_to_phys_mapping[] array during page-in. The gfn is
> now at a different page and the array has still INVALID_M2P_ENTRY in the
> index.
Does anyone know what the "best" location for this array update is?
p2m_mem_paging_prep() allocates a new page for the guest and assigns a
gfn to that mfn. So in theory the array could be updated right away,
even if the gfn will still have a p2m_ram_paging_* type until
p2m_mem_paging_resume() is called.
Olaf
> --- xen-unstable.hg-4.1.22459.orig/xen/arch/x86/mm/p2m.c
> +++ xen-unstable.hg-4.1.22459/xen/arch/x86/mm/p2m.c
> @@ -2827,6 +2827,7 @@ void p2m_mem_paging_resume(struct p2m_do
> mfn = gfn_to_mfn(p2m, rsp.gfn, &p2mt);
> p2m_lock(p2m);
> set_p2m_entry(p2m, rsp.gfn, mfn, 0, p2m_ram_rw);
> + set_gpfn_from_mfn(mfn_x(mfn), gfn);
> audit_p2m(p2m, 1);
> p2m_unlock(p2m);
>
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
>
next prev parent reply other threads:[~2010-12-14 22:58 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-06 20:59 [PATCH 00/17] xenpaging changes for xen-unstable Olaf Hering
2010-12-06 20:59 ` [PATCH 01/17] xenpaging: close xch handle in xenpaging_init error path Olaf Hering
2010-12-14 18:52 ` Ian Jackson
2010-12-06 20:59 ` [PATCH 02/17] xenpaging: remove perror usage " Olaf Hering
2010-12-06 20:59 ` [PATCH 03/17] xenpaging: print DPRINTF ouput if XENPAGING_DEBUG is in environment Olaf Hering
2010-12-06 20:59 ` [PATCH 04/17] xenpaging: print number of evicted pages Olaf Hering
2010-12-06 20:59 ` [PATCH 05/17] xenpaging: remove duplicate xc_interface_close call Olaf Hering
2010-12-06 20:59 ` [PATCH 06/17] xenpaging: do not use DPRINTF/ERROR if xch handle is unavailable Olaf Hering
2010-12-06 20:59 ` [PATCH 07/17] xenpaging: update xch usage Olaf Hering
2010-12-06 20:59 ` [PATCH 08/17] xenpaging: make vcpu_sleep_nosync() optional in mem_event_check_ring() Olaf Hering
2010-12-06 20:59 ` [PATCH 09/17] xenpaging: update machine_to_phys_mapping[] during page deallocation Olaf Hering
2010-12-06 20:59 ` [PATCH 10/17] xenpaging: update machine_to_phys_mapping[] during page-in Olaf Hering
2010-12-14 22:58 ` Olaf Hering [this message]
2010-12-15 10:47 ` Tim Deegan
2010-12-06 20:59 ` [PATCH 11/17] xenpaging: drop paged pages in guest_remove_page Olaf Hering
2010-12-06 20:59 ` [PATCH 12/17] xenpaging: handle HVMCOPY_gfn_paged_out in copy_from/to_user Olaf Hering
2010-12-07 9:27 ` Jan Beulich
2010-12-07 9:45 ` Olaf Hering
2010-12-15 11:35 ` Keir Fraser
2010-12-15 13:51 ` Olaf Hering
2010-12-15 14:08 ` Keir Fraser
2010-12-06 20:59 ` [PATCH 13/17] xenpaging: page only pagetables for debugging Olaf Hering
2010-12-06 20:59 ` [PATCH 14/17] xenpaging: prevent page-out of first 16MB Olaf Hering
2010-12-06 20:59 ` [PATCH 15/17] xenpaging: start xenpaging via config option Olaf Hering
2010-12-06 20:59 ` [PATCH 16/17] xenpaging: add dynamic startup delay for xenpaging Olaf Hering
2010-12-06 20:59 ` [PATCH 17/17] xenpaging: (sparse) documenation Olaf Hering
2010-12-06 21:16 ` [PATCH 00/17] xenpaging changes for xen-unstable Olaf Hering
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=20101214225837.GA27769@aepfle.de \
--to=olaf@aepfle.de \
--cc=xen-devel@lists.xensource.com \
/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;
as well as URLs for NNTP newsgroup(s).