From: Juergen Gross <jgross@suse.com>
To: minios-devel@lists.xenproject.org, xen-devel@lists.xenproject.org
Cc: Juergen Gross <jgross@suse.com>,
samuel.thibault@ens-lyon.org, wei.liu2@citrix.com
Subject: [PATCH 1/3] mini-os: cleanup x86_32.S
Date: Fri, 26 Aug 2016 16:35:34 +0200 [thread overview]
Message-ID: <1472222136-1177-2-git-send-email-jgross@suse.com> (raw)
In-Reply-To: <1472222136-1177-1-git-send-email-jgross@suse.com>
arch/x86/x86_32.S has some superfluous instructions. Remove them.
Signed-off-by: Juergen Gross <jgross@suse.com>
---
arch/x86/x86_32.S | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/arch/x86/x86_32.S b/arch/x86/x86_32.S
index f70fc65..3de0027 100644
--- a/arch/x86/x86_32.S
+++ b/arch/x86/x86_32.S
@@ -111,7 +111,6 @@ do_exception:
jmp ret_from_exception
ret_from_exception:
- movb CS(%esp),%cl
addl $8,%esp
RESTORE_ALL
@@ -140,11 +139,7 @@ ENTRY(hypervisor_callback)
call do_hypervisor_callback
add $4,%esp
movl HYPERVISOR_shared_info,%esi
- xorl %eax,%eax
- movb CS(%esp),%cl
- test $2,%cl # slow return to ring 2 or 3
- jne safesti
-safesti:movb $0,1(%esi) # reenable event callbacks
+ movb $0,1(%esi) # reenable event callbacks
scrit: /**** START OF CRITICAL REGION ****/
testb $0xFF,(%esi)
jnz 14f # process more events if necessary...
--
2.6.6
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
https://lists.xen.org/xen-devel
next prev parent reply other threads:[~2016-08-26 14:35 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-26 14:35 [PATCH 0/3] mini-os: some cleanups Juergen Gross
2016-08-26 14:35 ` Juergen Gross [this message]
2016-08-26 17:33 ` [PATCH 1/3] mini-os: cleanup x86_32.S Samuel Thibault
2016-08-26 14:35 ` [PATCH 2/3] mini-os: cleanup x86_64.S Juergen Gross
2016-08-26 14:46 ` Andrew Cooper
2016-08-26 14:54 ` Juergen Gross
2016-08-26 14:35 ` [PATCH 3/3] mini-os: remove unused functions from sched.c Juergen Gross
2016-08-26 17:34 ` Samuel Thibault
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=1472222136-1177-2-git-send-email-jgross@suse.com \
--to=jgross@suse.com \
--cc=minios-devel@lists.xenproject.org \
--cc=samuel.thibault@ens-lyon.org \
--cc=wei.liu2@citrix.com \
--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 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).