All of lore.kernel.org
 help / color / mirror / Atom feed
From: Bob Liu <lliubbo@gmail.com>
To: xen-devel@lists.xenproject.org
Cc: keir@xen.org, ian.campbell@citrix.com,
	George.Dunlap@eu.citrix.com, andrew.cooper3@citrix.com,
	jbeulich@suse.com
Subject: [PATCH 1/4] xen: asm-x86: introduce PGC_need_scrub page flag
Date: Tue, 17 Jun 2014 19:49:40 +0800	[thread overview]
Message-ID: <1403005783-30746-1-git-send-email-bob.liu@oracle.com> (raw)

To indicate a page is free but need to be scrubbed before in use.

Signed-off-by: Bob Liu <bob.liu@oracle.com>
---
 xen/include/asm-x86/mm.h |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/xen/include/asm-x86/mm.h b/xen/include/asm-x86/mm.h
index 7059adc..660fc33 100644
--- a/xen/include/asm-x86/mm.h
+++ b/xen/include/asm-x86/mm.h
@@ -223,9 +223,12 @@ struct page_info
 #define PGC_state_offlined PG_mask(2, 9)
 #define PGC_state_free    PG_mask(3, 9)
 #define page_state_is(pg, st) (((pg)->count_info&PGC_state) == PGC_state_##st)
+/* Page need to be scrubbed */
+#define _PGC_need_scrub   PG_shift(10)
+#define PGC_need_scrub    PG_mask(1, 10)
 
  /* Count of references to this frame. */
-#define PGC_count_width   PG_shift(9)
+#define PGC_count_width   PG_shift(10)
 #define PGC_count_mask    ((1UL<<PGC_count_width)-1)
 
 struct spage_info
-- 
1.7.10.4

             reply	other threads:[~2014-06-17 11:49 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-17 11:49 Bob Liu [this message]
2014-06-17 11:49 ` [PATCH 2/4] xen: introduce an "scrub" free page list Bob Liu
2014-06-17 12:36   ` Jan Beulich
2014-06-18  0:54     ` Bob Liu
2014-06-18 13:18       ` Konrad Rzeszutek Wilk
2014-06-17 11:49 ` [PATCH 3/4] xen: separate a function merge_free_trunks from Bob Liu
2014-06-17 12:39   ` Jan Beulich
2014-06-17 11:49 ` [PATCH 4/4] xen: use idle vcpus to scrub pages Bob Liu
2014-06-17 13:01   ` Jan Beulich
2014-06-18  1:18     ` Bob Liu
2014-06-18 10:42       ` Jan Beulich
2014-06-17 12:35 ` [PATCH 1/4] xen: asm-x86: introduce PGC_need_scrub page flag Jan Beulich
2014-06-17 12:46 ` Julien Grall
2014-06-18  0:55   ` Bob Liu

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=1403005783-30746-1-git-send-email-bob.liu@oracle.com \
    --to=lliubbo@gmail.com \
    --cc=George.Dunlap@eu.citrix.com \
    --cc=andrew.cooper3@citrix.com \
    --cc=ian.campbell@citrix.com \
    --cc=jbeulich@suse.com \
    --cc=keir@xen.org \
    --cc=xen-devel@lists.xenproject.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.