From: "Chen, Kenneth W" <kenneth.w.chen@intel.com>
To: linux-ia64@vger.kernel.org
Subject: RE: [PATCH]IA64 trap code 16 bytes atomic copy on montecito, take 2
Date: Thu, 02 Nov 2006 08:56:46 +0000 [thread overview]
Message-ID: <000301c6fe5c$d4617180$bf80030a@amr.corp.intel.com> (raw)
In-Reply-To: <454961EE.4070608@intel.com>
Mao, Bibo wrote on Wednesday, November 01, 2006 11:53 PM
> else means that current cpu does not support 16 byte atomic operation.
> If kprobe address is on slot 0/2, then memcpy still can execute.
Do you allow kprobe insertion on "L+X" instruction? It looks like so.
Then how do you maintain atomic update to L and X instruction right
now with memcpy?
"atomic update" is not really the exact word I want to use here. Don't
you want to write the upper 8-byte first so that break opcode is jammed
in there before updating the remaining 41-bit immediate value? Otherwise,
writing lower 8-byte first will end up with a small window that original
opcode seeing corrupted immediate value.
next prev parent reply other threads:[~2006-11-02 8:56 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-02 3:11 [PATCH]IA64 trap code 16 bytes atomic copy on montecito, take 2 bibo,mao
2006-11-02 3:39 ` Keith Owens
2006-11-02 5:04 ` [PATCH]IA64 trap code 16 bytes atomic copy on montecito, take bibo,mao
2006-11-02 6:51 ` bibo,mao
2006-11-02 7:17 ` [PATCH]IA64 trap code 16 bytes atomic copy on montecito, take 2 Keith Owens
2006-11-02 7:22 ` Keith Owens
2006-11-02 7:25 ` Keith Owens
2006-11-02 7:27 ` [PATCH]IA64 trap code 16 bytes atomic copy on montecito, take bibo,mao
2006-11-02 7:32 ` [PATCH]IA64 trap code 16 bytes atomic copy on montecito, take 2 Keith Owens
2006-11-02 7:38 ` Chen, Kenneth W
2006-11-02 7:45 ` Chen, Kenneth W
2006-11-02 7:52 ` [PATCH]IA64 trap code 16 bytes atomic copy on montecito, take bibo,mao
2006-11-02 8:17 ` [PATCH]IA64 trap code 16 bytes atomic copy on montecito, take 2 Chen, Kenneth W
2006-11-02 8:56 ` Chen, Kenneth W [this message]
2006-11-02 9:05 ` [PATCH]IA64 trap code 16 bytes atomic copy on montecito, take bibo,mao
2006-11-02 9:22 ` [PATCH]IA64 trap code 16 bytes atomic copy on montecito, take 2 Chen, Kenneth W
2006-11-02 19:50 ` Chen, Kenneth W
2006-11-02 19:57 ` Luck, Tony
2006-11-02 20:29 ` Chen, Kenneth W
2006-11-03 1:25 ` [PATCH]IA64 trap code 16 bytes atomic copy on montecito, take bibo,mao
2006-11-03 1:55 ` [PATCH]IA64 trap code 16 bytes atomic copy on montecito, take 2 Chen, Kenneth W
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='000301c6fe5c$d4617180$bf80030a@amr.corp.intel.com' \
--to=kenneth.w.chen@intel.com \
--cc=linux-ia64@vger.kernel.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