From: Xu Zhang <xzhang@cs.uic.edu>
To: xen-devel@lists.xen.org
Cc: samuel.thibault@ens-lyon.org, jeremy@goop.org,
Xu Zhang <xzhang@cs.uic.edu>,
gm281@cam.ac.uk, stefano.stabellini@eu.citrix.com
Subject: [PATCH 4/6] mini-os/x86-64 entry: remove unnecessary event blocking
Date: Fri, 8 Mar 2013 15:30:17 -0600 [thread overview]
Message-ID: <1362778219-8576-5-git-send-email-xzhang@cs.uic.edu> (raw)
In-Reply-To: <1362778219-8576-1-git-send-email-xzhang@cs.uic.edu>
We don't need to block events here because:
- if we came from "hypervisor_callback", events are disabled at this point,
no need to block again;
- if we came from "error_entry", we shouldn't touch event mask, for
exception hanlding are meant to be interrupted by Xen events (virtual
irq).
Signed-off-by: Xu Zhang <xzhang@cs.uic.edu>
---
| 1 -
1 files changed, 0 insertions(+), 1 deletions(-)
--git a/extras/mini-os/arch/x86/x86_64.S b/extras/mini-os/arch/x86/x86_64.S
index 79e893f..5e0021b 100644
--- a/extras/mini-os/arch/x86/x86_64.S
+++ b/extras/mini-os/arch/x86/x86_64.S
@@ -185,7 +185,6 @@ ENTRY(hypervisor_callback2)
error_exit:
RESTORE_REST
- XEN_BLOCK_EVENTS(%rsi)
retint_kernel:
retint_restore_args:
--
1.7.7.6
next prev parent reply other threads:[~2013-03-08 21:30 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-08 21:30 [PATCH 0/6] mini-os: check and fix up against nested events in x86-64 kernel entry Xu Zhang
2013-03-08 21:30 ` [PATCH 1/6] mini-os/x86-64 entry: code clean-ups Xu Zhang
2013-03-09 20:57 ` Samuel Thibault
2013-03-08 21:30 ` [PATCH 2/6] mini-os/x86-64 entry: define macros for registers partial save and restore Xu Zhang
2013-03-09 20:55 ` Samuel Thibault
2013-03-08 21:30 ` [PATCH 3/6] mini-os/x86-64 entry: code refactoring; no functional changes Xu Zhang
2013-03-09 21:03 ` Samuel Thibault
2013-04-11 4:40 ` Xu Zhang
2013-03-08 21:30 ` Xu Zhang [this message]
2013-03-09 21:07 ` [PATCH 4/6] mini-os/x86-64 entry: remove unnecessary event blocking Samuel Thibault
2013-03-15 20:16 ` Konrad Rzeszutek Wilk
2013-04-11 4:40 ` Xu Zhang
2013-03-08 21:30 ` [PATCH 5/6] mini-os/x86-64 entry: defer RESTORE_REST until return Xu Zhang
2013-03-09 21:15 ` Samuel Thibault
2013-03-08 21:30 ` [PATCH 6/6] mini-os/x86-64 entry: check against nested events and try to fix up Xu Zhang
2013-03-09 21:19 ` Samuel Thibault
2013-03-13 2:42 ` Xu Zhang
2013-03-09 22:44 ` Jeremy Fitzhardinge
2013-03-13 2:42 ` Xu Zhang
2013-03-13 5:53 ` Xu Zhang
2013-03-14 1:09 ` Jeremy Fitzhardinge
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